阅读说明：本技术 医用水刀和医用系统 (Medical water jet scalpel and medical system ) 是由 不公告发明人 于 2021-08-31 设计创作，主要内容包括：本公开提供一种医用水刀和医用系统。医用水刀包括喷头和喷管,喷头包括多个喷孔,喷管包括输入端、输出端和配置为提供医用液体流通的空间的内腔,喷管的输入端配置为供医用液体流入,喷管的输出端与多个喷孔连通,以使医用液体从多个喷孔喷射。该医用水刀可实现多喷孔选择性分离,相比于现有的单喷孔分离,待分离的柔性组织不易逃离多喷孔射流的冲击区域,可相对固定地完成柔性组织的切割及与管腔类弹性组织之间的分离,提升了水刀的组织选择性分离的性能,提高了医用水刀切割的手术效率,简化了手术操作,还能解决喷孔堵塞后水刀无法工作的问题。(The present disclosure provides a medical water jet and a medical system. The medical water jet scalpel comprises a spray head and a spray pipe, wherein the spray head comprises a plurality of spray holes, the spray pipe comprises an input end, an output end and an inner cavity which is configured to provide a space for the circulation of medical liquid, the input end of the spray pipe is configured to allow the medical liquid to flow in, and the output end of the spray pipe is communicated with the plurality of spray holes, so that the medical liquid is sprayed from the plurality of spray holes. This medical water sword can realize many orifice selectivity separation, compares in current single orifice separation, and the flexible tissue of treating the separation is difficult for escaping from many orifice efflux impact area, can accomplish the cutting of flexible tissue relatively fixedly and with the separation between the lumen class elastic tissue, promoted the tissue selectivity separation's of water sword performance, improved the surgical efficiency of medical water sword cutting, simplified the operation, can also solve the unable problem of work of water sword behind the orifice blockage.)

1. A medical water jet scalpel comprising:

a nozzle comprising an input end, an output end and a lumen configured to provide a space for the medical fluid to flow through, wherein the input end is configured for the medical fluid to flow into;

a nozzle head comprising a plurality of nozzle orifices, wherein the plurality of nozzle orifices are in communication with an output end of the nozzle tube, and the plurality of nozzle orifices are configured to spray the medical liquid through the output end.

2. The medical water jet scalpel of claim 1,

the nozzle comprises a multi-hole sub-nozzle, and the multi-hole sub-nozzle is provided with the plurality of spray holes.

3. The medical water jet scalpel of claim 1,

the spray head comprises a plurality of single-hole sub spray heads, and at least part of the spray holes in the plurality of spray holes are respectively formed in the plurality of single-hole sub spray heads.

4. The medical water jet scalpel of claim 1,

the output end of the spray pipe is a blind end, and at least one part of the blind end is used as the spray head.

5. The medical water jet scalpel of claim 2 or 3,

the output end of the spray pipe is a blind end, and the spray head is arranged at the blind end of the spray pipe.

6. The medical water jet scalpel of claim 2 or 3,

the spray pipe is a sleeve with openings at two ends, the spray head is fixed at the output end of the spray pipe and is directly or indirectly connected with the output end of the spray pipe in a sealing manner.

7. The medical water jet scalpel of claim 6, further comprising an outer suction tube, wherein the outer suction tube is sleeved outside the nozzle tube, and a gap space between an outer side wall of the nozzle tube and an inner side wall of the outer suction tube serves as a suction channel.

8. The medical water jet scalpel of claim 7,

the inner diameter of the suction outer pipe is 3-7.6 mm, and the outer diameter of the suction outer pipe is 4-8 mm;

the inner diameter of the spray pipe is 1.5 mm-5 mm, and the outer diameter of the spray pipe is 2 mm-6 mm;

the diameter of the spray hole is 0.05 mm-0.15 mm.

9. The medical water jet scalpel of claim 1,

the plurality of spray holes are uniformly arranged.

10. The medical water jet scalpel of claim 1,

the center distance between two adjacent spray holes in the plurality of spray holes is 0.4 mm-4.0 mm.

11. The medical water jet scalpel of claim 1,

the flow velocity of jet flow ejected from the plurality of jet holes by the medical liquid is 50 m/s-100 m/s.

12. The medical water jet scalpel of claim 1,

the spray head comprises one or more of the following materials: metal, gem, plastic;

the lance comprises one or more of the following materials: metal, plastic.

13. The medical water jet scalpel of claim 6, further comprising an insert, wherein the insert is fixedly and hermetically connected with the nozzle tube, and the spray head is connected with the nozzle tube through the insert;

the output end of the embedding head is provided with a sinking groove, the spray head is arranged in the sinking groove of the embedding head and the side wall of the sinking groove wraps the spray head, and the plurality of spray holes, the embedding head and the spray pipe are sequentially communicated in the axial direction parallel to the spray pipe.

14. The medical water jet scalpel of claim 6,

the spray head is fixed on the inner side of the output end of the spray pipe in a sealing mode.

15. The medical water jet scalpel of claim 6, further comprising a protective sheath open at both ends,

the output of spray tube is equipped with first heavy groove, the protective sheath embedding the spray tube first heavy groove, the output of protective sheath is equipped with the heavy groove of second, the shower nozzle embedding the protective sheath the heavy groove of second, a plurality of orifices the protective sheath with the spray tube is being on a parallel with the axial of spray tube communicates in proper order.

16. The medical water jet scalpel of claim 3,

the output end of the spray pipe is a blind end, and the spray head is arranged at the blind end of the spray pipe;

the blind end of the spray pipe comprises a blind end surface and a plurality of step holes, each step hole comprises a first subspace protruding out of the blind end surface and a second subspace recessed into the blind end surface, and each single-hole sub-spray head in a plurality of single-hole sub-spray heads included by the spray head is correspondingly embedded into the first subspace of each step hole in the plurality of step holes.

17. The medical water jet scalpel of claim 6, further comprising a support sleeve, wherein,

the output end of the spray pipe is arranged to be a step structure, the support sleeve is matched with the step structure of the spray pipe in shape and extends into the inner cavity of the spray pipe, and the spray head is fixedly connected to the output end of the support sleeve;

and a part of space on the outer side of the integral structure connected with the step structure, the support sleeve and the spray head is used as an injection molding area.

18. The medical water jet scalpel of claim 7 or 8, further comprising a handle, wherein a side of the outer suction tube remote from the spray head is fixedly connected to the handle.

19. The medical water jet scalpel of claim 7 or 8, further comprising a suction connecting tube, wherein the suction connecting tube is in communication with an end of the suction outer tube remote from the spray head.

20. The medical water jet scalpel as claimed in claim 7, further comprising an injection connecting tube, wherein the injection connecting tube is communicated with an end of the nozzle tube away from the spray head.

21. The medical water jet scalpel of claim 1,

the plurality of ejection orifices includes at least two of the ejection orifices configured to eject the medical liquid to selectively separate a target tissue.

22. A medical system, comprising:

the medical water jet scalpel as claimed in any one of claims 1 to 21;

a liquid supply unit configured to supply the medical liquid;

a pressure pump configured to apply pressure to the medical liquid to input the medical liquid to the lumen of the nozzle.

23. The medical system according to claim 22, further comprising a waste tank, wherein,

the medical water jet scalpel also comprises a suction outer tube, the suction outer tube is sleeved outside the spray tube, a gap space between the outer side wall of the spray tube and the inner side wall of the suction outer tube is used as a suction channel,

the waste water tank is communicated with the suction outer pipe.

24. The medical system of claim 23, further comprising a negative pressure aspirator, wherein,

the negative pressure suction machine is connected with the waste water tank.

Technical Field

Embodiments of the present disclosure relate to a medical water jet and a medical system.

Background

At present, cancer is one of the major diseases which have not been overcome by modern medicine. According to some cancer statistics, liver cancer is the fifth most prevalent and the second most prevalent in cancer species. The high morbidity and mortality of liver cancer reflect the current lack of effective and targeted therapeutic approaches.

The treatment means of liver cancer include surgical treatment, local ablation, transcatheter arterial chemoembolization, radiotherapy, systemic treatment, etc., wherein the surgical treatment is still the preferred method for treating liver cancer.

The key operational steps of surgical treatment include: ligament dissociation liver, blockage of vascular bile duct inflow (first hepatic portal), liver disruption, blockage of vascular bile duct outflow (second hepatic portal, third hepatic portal), and abdominal closure after complete hemostasis. The surgery may also cause infection, hemorrhage, gallbladder leakage, liver failure and other complications, and seriously affects the five-year survival rate and the death rate of liver cancer after the surgery. Liver failure is most of a concern in terms of the difficulty of manipulation, time-consuming, and the effect on complications of critical procedures.

Currently, the means for interrupting the liver by surgical treatment mainly fall into three categories, and there are more than ten specific methods, for example, the methods frequently used include: (1) separating liver parenchyma and reserving blood vessels; (2) the liver parenchyma is separated, the blood vessel and the bile duct (3) are closed and cut, and the liver parenchyma resection surface is coagulated and cut by a surgical knife.

Disclosure of Invention

At least one embodiment of the present disclosure provides a medical water jet scalpel, including a spray head and a spray pipe; the nozzle comprises an input end, an output end and a cavity configured to provide a space for the circulation of medical liquid, wherein the input end of the nozzle is configured to be used for the inflow of the medical liquid; the spray head includes a plurality of spray orifices in communication with the output end of the spray tube and configured to spray the medical fluid through the output end of the spray tube.

For example, in at least one embodiment of the present disclosure, the nozzle includes a multi-hole sub-nozzle, and the multi-hole sub-nozzle is provided with a plurality of nozzle holes.

For example, in a medical water jet scalpel provided by at least one embodiment of the present disclosure, the nozzle includes a plurality of single-hole sub-nozzles, and at least some of the plurality of nozzle holes are respectively formed in the plurality of single-hole sub-nozzles.

For example, in a medical water jet scalpel provided in at least one embodiment of the present disclosure, the output end of the nozzle tube is a blind end, and at least a portion of the blind end serves as a nozzle.

For example, in at least one embodiment of the present disclosure, the output end of the nozzle tube is a blind end, and the spray head is disposed at the blind end of the nozzle tube.

For example, in at least one embodiment of the present disclosure, the nozzle is a sleeve with openings at two ends, the nozzle is fixed at the output end of the nozzle, and the nozzle is directly or indirectly connected with the output end of the nozzle in a sealing manner.

For example, at least one embodiment of the present disclosure provides a medical water jet scalpel further including an outer suction tube, wherein the outer suction tube is sleeved outside the nozzle tube, and a gap space between an outer side wall of the nozzle tube and an inner side wall of the outer suction tube serves as a suction channel.

For example, in a medical water jet scalpel provided in at least one embodiment of the present disclosure, an inner diameter of the outer suction tube is 3mm to 7.6mm, and an outer diameter of the outer suction tube is 4mm to 8 mm; the inner diameter of the spray pipe is 1.5 mm-5 mm, and the outer diameter of the spray pipe is 2 mm-6 mm; the diameter of the spray hole is 0.05 mm-0.15 mm.

For example, in a medical water jet scalpel provided by at least one embodiment of the present disclosure, a plurality of nozzle holes are uniformly arranged.

For example, in a medical water jet scalpel provided in at least one embodiment of the present disclosure, a center distance between two adjacent nozzle holes of a plurality of nozzle holes is 0.4mm to 4.0 mm.

For example, in a medical water jet provided by at least one embodiment of the present disclosure, the jet flow velocity of the medical liquid ejected from the plurality of ejection holes is 50 m/s to 100 m/s.

For example, in at least one embodiment of the present disclosure, a medical water jet is provided, in which the nozzle includes one or more of the following materials: metal, gem, or plastic.

For example, in at least one embodiment of the present disclosure, a medical water jet is provided, in which the nozzle includes one or more of the following materials: metal, plastic.

For example, the medical water jet scalpel that at least one embodiment of this disclosure provided still includes the mosaic head, and wherein, mosaic head and fixed and sealing connection of spray tube, shower nozzle pass through the mosaic head and are connected with the spray tube, and the output of mosaic head is equipped with the heavy groove, and the shower nozzle setting is in the heavy inslot of mosaic head and the lateral wall parcel shower nozzle of heavy groove, and a plurality of orifices, mosaic head and spray tube communicate in proper order in the axial that is on a parallel with the spray tube.

For example, in at least one embodiment of the present disclosure, there is provided a medical water jet in which the output end of the nozzle tube and the nozzle head are in interference fit.

For example, in at least one embodiment of the present disclosure, a medical water jet is provided, in which a nozzle head is sealingly fixed inside an output end of a nozzle tube.

For example, the medical water jet scalpel that at least one embodiment of this disclosure provided still includes both ends open-ended protective sheath, and wherein, the output of spray tube is equipped with first heavy groove, and the first heavy groove of protective sheath embedding spray tube, the output of protective sheath are equipped with the second heavy groove, and the second heavy groove of shower nozzle embedding protective sheath, a plurality of orifice, protective sheath and spray tube communicate in proper order in the axial that is on a parallel with the spray tube.

For example, in at least one embodiment of the present disclosure, the blind end of the nozzle tube includes a blind end surface and a plurality of stepped holes, each of the stepped holes includes a first subspace protruding from the blind end surface and a second subspace recessed from the blind end surface, and each of the plurality of single-hole sub-nozzles is correspondingly fitted into the first subspace of each of the plurality of stepped holes.

For example, the medical water jet scalpel provided by at least one embodiment of the present disclosure further includes a support sleeve, wherein the output end of the nozzle tube is set to be a step structure, the support sleeve is matched with the step structure of the nozzle tube in shape, the support sleeve extends into the inner cavity of the nozzle tube, and the spray head is fixedly connected to the output end of the support sleeve; and a part of space on the outer side of the integral structure connected with the step structure, the support sleeve and the spray head is used as an injection molding area.

For example, at least one embodiment of the present disclosure provides a medical water jet further comprising a handle, wherein a side of the suction outer tube away from the spray head is fixedly connected with the handle.

For example, at least one embodiment of the present disclosure provides a medical water jet further including a suction connection pipe, wherein the suction connection pipe is communicated with an end of the suction outer pipe far away from the spray head.

For example, at least one embodiment of the present disclosure provides a medical water jet scalpel further including an injection connecting pipe, where the injection connecting pipe is communicated with an end of the nozzle pipe away from the nozzle.

For example, in at least one embodiment of the present disclosure, a medical water jet is provided, in which the plurality of nozzle holes includes at least two nozzle holes configured to eject a medical liquid to selectively separate a target tissue.

For example, at least one embodiment of the present disclosure also provides a medical system, including: a medical water jet as described in any one of the above; a liquid supply unit configured to supply a medical liquid; a pressure pump configured to apply pressure to the medical liquid to input the medical liquid into the lumen of the nozzle.

For example, a medical system that this at least disclosed embodiment provided still includes the waste water jar, and wherein, medical water sword still includes the suction outer tube, and the suction outer tube cover is established in the outside of spray tube, and the interstitial space between the lateral wall of spray tube and the inside wall of suction outer tube is as the suction channel, and the waste water jar communicates with the suction outer tube.

For example, at least one embodiment of the present disclosure provides a medical system further comprising a negative pressure extractor, wherein the negative pressure extractor is connected to the waste water tank.

Compared with the prior art, the beneficial effects of at least one embodiment of the present disclosure include: the medical water jet scalpel can realize multi-jet-hole cutting, the flexible tissue to be cut is not easy to escape from an impact area of multi-jet-hole jet flow, the cutting of the flexible tissue and the separation between the flexible tissue and the elastic tissue of a tube cavity class can be relatively and fixedly completed, the tissue selective separation performance of the water jet scalpel is improved, the surgical efficiency of the medical water jet scalpel cutting is improved, the surgical operation is simplified, and the problem that the water jet scalpel cannot work after the jet holes are blocked can be solved.

Drawings

In order to more clearly illustrate the embodiments of the present disclosure or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present disclosure, and other drawings can be obtained by those skilled in the art without creative efforts.

Fig. 1 is a schematic diagram of the components of a medical system provided in some embodiments of the present disclosure;

fig. 2 is a schematic structural view of a medical water jet according to some embodiments of the present disclosure;

FIG. 3a is a schematic view of a first configuration of a spray head and spout provided in accordance with certain embodiments of the present disclosure, and FIG. 3b is a left side view of the first configuration of FIG. 3 a;

fig. 4a is a schematic diagram of a uniform arrangement of three nozzle holes provided in some embodiments of the present disclosure;

fig. 4b is a schematic diagram of a uniform arrangement of four nozzle holes provided in some embodiments of the present disclosure;

fig. 4c is a schematic diagram of a uniform arrangement of five nozzle holes provided by some embodiments of the present disclosure;

FIG. 4d is a schematic diagram of a uniform arrangement of seven orifices provided by some embodiments of the present disclosure;

fig. 4e is a schematic diagram of a uniform arrangement of nine orifices provided by some embodiments of the present disclosure;

fig. 4f is a schematic diagram of a uniform arrangement of twenty-one orifices provided by some embodiments of the present disclosure;

FIG. 5a is a schematic view of a second configuration of a spray head and spout provided in accordance with certain embodiments of the present disclosure, and FIG. 5b is a left side view of the second configuration of FIG. 5 a;

FIG. 6a is a schematic view of a third configuration of spray heads and spray bars provided in accordance with certain embodiments of the present disclosure, and FIG. 6b is a left side view of the third configuration of FIG. 6 a;

FIG. 7a is a schematic view of a fourth configuration of a spray head and spout provided in accordance with certain embodiments of the present disclosure, and FIGS. 7B and 7c are schematic views of section A-A and section B-B, respectively, of the fourth configuration of FIG. 7 a;

FIG. 8a is a schematic view of configuration five of a spray head and spout provided in accordance with certain embodiments of the present disclosure, and FIG. 8b is a left side view of configuration five of FIG. 8 a;

FIG. 9a is a schematic view of configuration six of a spray head and spout provided in accordance with certain embodiments of the present disclosure, and FIG. 9b is a left side view of configuration six of FIG. 9 a;

FIG. 10a is a schematic view of configuration seven of a spray head and spout provided in accordance with certain embodiments of the present disclosure, and FIG. 10b is a left side view of configuration seven of FIG. 10 a;

FIG. 11a is a schematic view of structure eight of a spray head and spout provided in accordance with certain embodiments of the present disclosure, and FIG. 11b is a left side view of structure eight of FIG. 11 a;

fig. 12 is a table illustrating results comparing the separation efficiency and capacity of a single-hole medical water jet and a multi-hole medical water jet according to some embodiments of the present disclosure; and

fig. 13 is a schematic view of an operation path of a single-hole medical water jet and an operation path of a multi-hole medical water jet according to some embodiments of the present disclosure;

fig. 14 is a graph illustrating the processing effect of the porous medical water jet according to some embodiments of the present disclosure;

fig. 15 is a graph illustrating the processing effect of a single-hole medical water jet according to some embodiments of the present disclosure.

Detailed Description

The technical solutions in the embodiments of the present disclosure will be clearly and completely described below with reference to the drawings in the embodiments of the present disclosure, and it is obvious that the described embodiments are only a part of the embodiments of the present disclosure, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments disclosed herein without making any creative effort, shall fall within the protection scope of the present disclosure.

Unless otherwise defined, all terms (including technical and scientific terms) used in the embodiments of the present disclosure have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

The use of "first," "second," and similar terms in the embodiments of the disclosure is not intended to indicate any order, quantity, or importance, but rather to distinguish one element from another. The use of the terms "a" and "an" or "the" and similar referents do not denote a limitation of quantity, but rather denote the presence of at least one. Likewise, the word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical or communication connections, whether direct or indirect. Flow charts are used in the disclosed embodiments to illustrate the steps of a method according to an embodiment of the disclosure. It should be understood that the preceding and following steps are not necessarily performed in the exact order in which they are performed. Rather, various steps may be processed in reverse order or concurrently, unless explicitly limited by the embodiments of the disclosure. Meanwhile, other operations may be added to the processes, or a certain step or steps may be removed from the processes.

As used in the embodiments of the present disclosure, "input end" means an end of, for example, each component or element or device or apparatus close to the liquid inflow side, and "output end" means an end of, for example, each component or element or device or apparatus away from the liquid inflow side. A dead end as used in embodiments of the present disclosure means, for example, a closed or closed end portion comprising at least a portion of a component or element or device or apparatus, for example, the entirety of the end portion may be closed or closed, or a first portion of the end portion may be closed or closed and a second portion of the end portion may not be closed or closed.

With the development of minimally invasive and refined medical surgery field, none of the many liver-breaking means can completely meet the operation requirement of liver breaking, effectively control postoperative complications and improve the postoperative survival rate in five years. Therefore, subversion innovation of the existing medical technology is imperative.

The ideal liver-breaking method should have the following characteristics: has the advantages of high speed, no thermal injury, protection of lumen, fine separation, little blood loss, easy operation under endoscope, no gallbladder leakage and hydrops, and suitability for liver cirrhosis. In the existing method, a single-hole water jet scalpel technology has certain advantages, however, the defects of low speed and difficulty in operation under an endoscope are also unacceptable to most doctors, and in addition, according to fault investigation of the existing water jet scalpel product, the problem of easiness in blocking and leakage also limits popularization of the product.

At least one embodiment of the present disclosure provides a medical water jet scalpel, including a nozzle and a nozzle tube, wherein the nozzle tube includes an input end, an output end and an inner cavity configured to provide a space for medical liquid to flow through, the input end of the nozzle tube is configured to allow medical liquid to flow in, the nozzle includes a plurality of nozzle holes, the plurality of nozzle holes are communicated with the output end of the nozzle tube, and the plurality of nozzle holes are configured to spray the medical liquid passing through the output end of the nozzle tube.

At least one embodiment of the present disclosure also provides a medical system including the medical water jet scalpel.

Compared with the single-jet-hole cutting in the prior art, the medical water jet scalpel disclosed by the embodiment can realize multi-jet-hole cutting, the flexible tissue (such as substantial tissue) to be cut is not easy to escape from an impact area of multi-jet-hole jet flow, the cutting of the flexible tissue and the separation between the flexible tissue and the tubular cavity elastic tissue can be relatively and fixedly completed, the tissue selective separation performance of the water jet scalpel is improved, the surgical efficiency of the medical water jet scalpel cutting (such as liver breaking by the water jet scalpel) is improved, the surgical operation is simplified, and the problem that the water jet scalpel cannot work after the jet holes are blocked can be solved.

Embodiments of the present disclosure and examples thereof are described in detail below with reference to the accompanying drawings.

It should be noted that, for convenience of description herein, in some embodiments of the present disclosure, an axial direction of the nozzle is denoted as a left-right direction in the drawing, a side away from the liquid inflow end of the inner cavity is denoted as a left side, a side close to the liquid inflow end is denoted as a right side, an input end of the nozzle is located at a right end of the inner cavity, and an output end of the nozzle is located at a left end of the inner cavity. It should be noted that the orientations of the embodiments of the present disclosure all represent the orientations in the drawings, and do not affect the orientations in practical applications, and the present disclosure does not limit the orientations.

Fig. 1 is a schematic diagram of a medical system according to some embodiments of the present disclosure. Fig. 2 is a schematic structural view of a medical water jet according to some embodiments of the present disclosure.

As shown in fig. 1, the medical system includes a medical water jet 100, a pressure pump 200, and a liquid supply unit 300. The liquid supply unit 300 is used to supply a medical liquid. The pressure pump 200 is used to apply pressure to the medical fluid.

For example, in the example of fig. 1, the medical water jet 100 includes a spray head 110 and a spray tube 120. The nozzle 110 includes a plurality of nozzle holes 111, that is, the medical water jet 100 of the embodiment of the present disclosure may also be referred to as a porous medical water jet. The nozzle 120 includes an input end, an output end, and a lumen 121, the lumen 121 of the nozzle 120 is configured to provide a space through which the medical fluid flows, under the pressure applied by the pressure pump 200, into the input end 121a of the nozzle 120, and the medical fluid flows through the lumen 121, and the output end (i.e., the left end in the drawing) of the nozzle 120 communicates with the plurality of nozzle holes 111, so that the medical fluid is injected through the output end of the nozzle 120 and from the plurality of nozzle holes 111.

For example, in some embodiments of the present disclosure, the fluid supply unit 300 includes a saline bag, and the medical fluid includes saline. Of course, this is merely exemplary and not a limitation of the present disclosure, and other suitable liquid supply units, such as liquid tanks, may be provided as the case may be, and are not described herein again.

For example, in the example of fig. 1, the medical system further comprises a waste water tank 400 and a negative pressure suction machine 500.

As shown in fig. 1 and 2, in some embodiments of the present disclosure, the medical water jet scalpel 100 further includes an outer suction tube 130, the outer suction tube 130 is sleeved on the outside of the nozzle tube 120, and a gap space between the outer side wall of the nozzle tube 120 and the inner side wall of the outer suction tube 130 serves as a suction channel. The waste water tank 400 communicates with the suction outer tube 130. The negative pressure suction machine 500 is connected to the waste water tank 400 to provide negative pressure that can perform a suction function.

For example, in some embodiments of the present disclosure, the axial directions of the outer suction pipe 130 and the nozzle 120 are parallel, for example, the outer suction pipe 130 and the nozzle 120 may be coaxially disposed, for example, in other embodiments, the nozzle 120 is sleeved outside the outer suction pipe 130, and the nozzle 120 and the outer suction pipe 130 may also be non-coaxially disposed, for example, in parallel, which may be determined according to practical situations, and the present disclosure does not limit this.

For example, in the example of fig. 1 and 2, the medical water jet 100 further includes a handle 140, and the right side of the suction outer tube 130 is fixedly connected to the handle 140. For example, the medical water jet scalpel 100 further includes a suction connection tube 150, the suction connection tube 150 communicates with a right end of the suction outer tube 130, and the waste water tank 400 communicates with the suction outer tube 130 through the suction connection tube 150 to collect waste liquid or tissue debris, etc. For example, the medical water jet scalpel 100 can further comprise a suction adapter 180, and the suction connecting tube 150 is communicated with the suction outer tube 130 through the suction adapter 180.

As shown in fig. 2, the medical water jet scalpel 100 further comprises an injection connecting tube 160, and the injection connecting tube 160 is communicated with one end of the nozzle tube 120 far away from the nozzle 110. For example, the medical water jet scalpel 100 can further comprise a jet adapter 170, and the nozzle tube 120 is communicated with the jet connecting tube 160 through the jet adapter 170.

Hereinafter, an operation method provided by some embodiments of the present disclosure with respect to the medical system described above will be described. The operation method comprises the following steps: the liquid supply unit 300 supplies a working medium (i.e., a medical liquid) to the pressure pump 200, under the drive of a program (control unit) and a motor in the host, pressurizes the medical liquid to a working pressure, enters the handle 140 through the injection connecting pipe 160, reaches the spray head 110 through the injection adaptor 170 and the spray pipe 120, and generates high-speed jet flows from the plurality of spray holes 111 on the end surface of the spray head 110 to perform injection, so as to realize selective separation of flexible tissues (e.g., liver parenchyma) and elastic tissues (e.g., blood vessels and bile ducts) in the body by using the jet flows, for example, selectively separate the liver parenchyma and lumen-like tissues by using the jet flows.

For example, the pressure pump 200 is a high pressure pump, and the working pressure is 1 to 10MPa, which is merely exemplary and not limiting. In some embodiments of the present disclosure, the pressure pump 200 is connected to a host machine, which includes a control unit and a power unit for controlling and driving the pressure pump 200, for example, the rotational speed can be adjusted; in other embodiments, pressure pump 200 has a power unit itself, or pressure pump 200 integrates a control unit and a power unit. For example, the medical fluid is physiological saline, the medical water jet 100 is a disposable surgical instrument, and the water jet formed by the plurality of jet holes of the medical water jet 100 can efficiently perform the selective separation of the flexible tissue and the elastic tissue by one-handed operation of the doctor.

Optionally, the operating method further comprises: after the separation between the liver parenchyma and the luminal tissue is completed by the jet flow, the generated waste fluid and tissue debris enter the outer suction tube 130 from the side close to the nozzle 110, flow through the suction channel, then flow through the suction adapter 180 to the suction connection tube 150, and then enter the waste water tank 400, so that the sprayed water and the tissue separated from the organ are discharged out of the body through the tube. For example, the negative pressure suction machine 500 can provide negative pressure of-0.02 to-0.08 MPa to realize the suction function.

For example, in some embodiments of the present disclosure, the inner diameter of the nozzle is about 1.5mm to about 5mm and the outer diameter of the nozzle is about 2mm to about 6 mm. For example, the diameter of the nozzle hole is about 0.05mm to 0.15 mm. For example, in some embodiments of the present disclosure, the jet flow velocity of the medical fluid ejected from the plurality of orifices 111 is between 50 meters/second and 100 meters/second.

At present, only a single-hole medical water jet scalpel is available in the market, and the conception and the case of the multi-hole medical water jet scalpel aiming at medical cutting and separation do not exist.

The porous medical water jet scalpel at least solves the technical problem that in the technical field of medical use, the prior art can not completely reserve elastic tissues while effectively cutting or removing the flexible tissues, so that the elastic tissues and the flexible tissues are effectively separated, and achieves a plurality of unexpected technical effects.

The inventor of the present disclosure finds that the single-hole medical water jet scalpel in the prior art has the following technical problems:

(1) when the single-hole medical water jet scalpel in the prior art is used for jet blasting biological tissues, the flexible or elastic biological tissues are easy to move when being blasted, and the flexible or elastic biological tissues can deviate to the outside of a jet area under the action of jet, so that the biological tissues are easy to escape from the range of the jet area. Since the cutting and separating action of the single-hole medical water jet is concentrated only in the jet flow region, if the flexible tissue (for example, liver parenchyma tissue) and the elastic tissue (for example, lumen tissue) in the jet flow region are displaced by the jet flow, the effect of tissue selective separation of the single-hole medical water jet and the precision of the operation are significantly affected, and adverse operation effects such as more liver parenchyma tissue remains accompanied therewith are caused.

(2) In order to solve the problem that the flexible biological tissue and the elastic biological tissue are easy to escape in the single-hole medical water jet scalpel in the prior art, the water flow diameter is generally increased by increasing the jet pressure of the jet flow or increasing the single-hole diameter of the single-hole medical water jet scalpel so as to break the flexible biological tissue as much as possible, thereby improving the separation efficiency of the flexible biological tissue and the elastic biological tissue. However, this results in more rupture and/or damage to the elastic tissue (e.g., vascular rupture, bile duct damage), and more undesirable surgical consequences such as blood loss and edema of the liver margin.

(3) Moreover, the operation mode of the single-hole medical water jet scalpel in the prior art is single-line operation. In order to perform cutting and separation within the desired exposure range of biological tissue, a high frequency moving single-hole medical water jet is required. This results in lower operating efficiency and greater difficulty in surgical operation.

The present disclosure addresses the technical problems discovered by the present inventors, creating a porous medical water jet of the present disclosure that achieves many non-obvious technical effects. The method comprises the following specific steps:

(1) firstly, the porous medical water jet scalpel disclosed by the invention is used for cutting the parenchyma tissue, so that the selective separation of biological tissues can be efficiently and accurately achieved, for example, liver parenchyma tissues in a jet flow region are accurately and efficiently cut or removed, blood vessels, bile ducts and the like distributed in the jet flow region are kept undamaged, and for example, elastic tissues such as the blood vessels, the bile ducts and the like passing through the jet flow region are prevented from being cut. The simultaneous completion of these two actions is of great significance for liver resection surgery.

For example, in some examples, the porous medical water jet allows selective separation of flexible and elastic tissue in a cutting zone having a width and length, e.g., leaving a blood vessel exposed (e.g., 3-5 mm) to allow the physician to perform the next precise vessel closure procedure after the exposed blood vessel (removing a portion of liver parenchyma) is completed. Thus, the use of the porous medical water jet makes it possible to use a band-like cutting means having a certain width and length. When the spray head of the porous medical water jet scalpel moves in a rapid transverse scanning manner, the spray head moves slowly and longitudinally to form a reciprocating Z-shaped path, so that the cutting belt is covered completely, blood vessels in the cutting belt (for example, the length is about 30mm, and the width is about 5mm) are exposed fully, liver parenchyma at the position where the jet flow passes is cut or removed, lumen tissues such as blood vessels, bile ducts and the like associated with the liver parenchyma are reserved, and selective separation is achieved effectively. As such, the porous medical water jet of the present disclosure exhibits great advantages in the effects of tissue selective separation (e.g., vascular protection, depth of cut, clearance of substantial tissue) and separation efficiency, etc., compared to a single-hole water jet under the same parameter settings (e.g., pressure of jet, diameter of jet hole, and same human tissue).

Moreover, since the porous medical water jet scalpel disclosed by the disclosure has a plurality of jets, and the distance between the jet areas corresponding to the plurality of jets is very small (for example, only 0.4-4.0 mm), the flexible or elastic biological tissue between the plurality of jet areas is limited by the plurality of jet areas, so that the flexible or elastic biological tissue cannot freely deflect. During the moving process of the jet flow area group of the nozzle of the porous medical water jet scalpel, the cutting of the flexible tissue and the separation of the flexible tissue and the elastic tissue of the lumen can be relatively and fixedly completed. The cluster effect formed in this way improves the actual working efficiency and working performance of the medical water jet scalpel. In other words, if biological tissues in a certain local area are hit by the jet flow of one of the jet holes of the porous medical water jet scalpel, the biological tissues in the local area tend to move to an adjacent position, but in the adjacent position, the biological tissues may be hit by the jet flows of other jet holes in the porous medical water jet scalpel or tend to move in an opposite direction due to the jet flows of other jet holes, so that a fixing effect is achieved, that is, the plurality of jet holes have a mutually complementary effect, so that the biological tissues in the process of simultaneously jetting the plurality of jet flows can escape everywhere and can only be cut or separated from the lumen-like elastic tissues. Therefore, the multi-hole water jet scalpel disclosed by the invention not only simply increases the number of the jet holes, but also achieves the technical effect which cannot be expected to be achieved by a single-hole water jet scalpel from the prior art by a person skilled in the art, and realizes the selective separation of the target biological tissue efficiently and accurately.

(2) Secondly, due to the greatly improved effect of the selective separation of the porous medical water jet scalpel, the jet pressure of the jet flow can be reduced in the operation process. Lumen-like tissue (e.g., small blood vessels and small bile ducts) may thus be better protected and retained while satisfying the need for effective cutting and removal of parenchymal tissue. The preservation of lumen tissue (such as blood vessels and bile ducts) can reduce the bleeding and bile leakage in the operation, reduce the postoperative complications, simultaneously can lighten the edema brought by the postoperative tissue and shorten the hospitalization time and the recovery time of postoperative patients.

(3) Thirdly, the operation mode of the porous medical water jet scalpel is a multi-line operation mode, when selective separation is carried out in a cutting zone, the porous medical water jet scalpel only needs to be moved at low frequency, the operation efficiency is high, and the difficulty of operation is greatly reduced.

In addition, industrial fluidic devices do not have any technical hint associated with the porous medical water jet of the present disclosure, and the technical solution of the porous medical water jet of the present disclosure is not easily conceivable based on industrial fluidic devices.

First, high pressure water jets are widely used in industry, but from the functional and effective point of view, industrial jet devices are mainly used for cleaning purposes, for example, for high pressure cleaning, it may be easy to think of using porous jets, but the purpose is only to increase the water volume or increase the spray area or improve the cleaning efficiency, without any technical teaching to achieve selective separation, for example, industrial jets are high pressure, have large spray area, and the difference of the sprayed fluid, and the technical purpose of the present disclosure that requires effective cutting or removal of flexible tissue while preserving as intact elastic tissue as possible cannot be achieved at all.

Secondly, although industrial high-pressure water jets may be occasionally used for industrial high-pressure cutting, they employ a single-hole jet method, and cutting by a multi-hole jet method does not occur, because for industrial high-pressure cutting, accuracy and efficiency of cutting are sought, while a multi-hole jet is used for cutting, which does not improve cutting efficiency or cutting accuracy, but rather causes reduction of cutting accuracy, and in case of constant pressure, dispersion of one jet into multiple jets causes reduction of cutting efficiency. Further, the single-hole jet cutting tool used in industry cannot be directly applied to the multi-orifice medical water jet scalpel of the present disclosure in consideration of material, process difficulty and cost.

Furthermore, the object of the cutting by the porous medical water jet of the present disclosure is not a rigid body, but rather a very soft and elastic human tissue, such as a parenchymal tissue and a lumen-like tissue (e.g., a blood vessel, a bile duct). However, since the object to be treated in the industrial field is a rigid body (for example, a metal plate) having high hardness and there is no technical problem that the object to be treated is soft and easy to move and escapes jet impact to cause adverse effects, the industrial field does not have a technical demand for the porous water jet cutter, and naturally does not think of the application of the porous water jet cutter to industrial cutting. Moreover, since the objects to be processed in the industrial field are rigid bodies (e.g., metal plates) having high hardness, there is no need for a corresponding ideal exposure state, and there is no need for a corresponding cutting zone, for example, the cutting paths of the objects to be processed in the industrial field are all linear (straight lines, curved lines), so that the technical effects corresponding to the porous medical water jet scalpel of the present disclosure cannot be predicted and realized.

The technical problems of the porous medical water jet scalpel and the industrial jet device are different in essence, and the porous medical water jet scalpel belongs to two completely different technical fields. The technical purposes to be achieved by the two are fundamentally different, the purpose of the industrial jet device is accurate, thorough and efficient cutting, and the purpose of the porous medical water jet scalpel disclosed by the invention is to effectively cut or remove flexible tissues and simultaneously completely reserve elastic tissues as far as possible so as to realize selective separation. The present inventors have also found that the differences between the prior art industrial jet device and the porous medical water jet of the present disclosure include at least one or more of the following: (a) the objects to be cut by the industrial jet device comprise rigid bodies such as metal, ceramics, glass, composite materials, rocks and the like, and the cutting objects of the porous medical water jet cutter disclosed by the invention are flexible cutting objects such as solid biological tissues and mucosa layers; (b) the working medium of the industrial fluidic device generally employs water + abrasive materials, such as silicon carbide and quartz sand, while the porous medical water jet of the present disclosure employs medical liquids such as physiological saline; (c) the jet speed of the industrial jet device is 800-1000 m/s, the porous medical water jet of the present disclosure adopts 50-100 m/s, and the two have order of magnitude difference; (d) the diameter of the spray hole of the industrial jet device is 0.2 mm-1.0 mm, while the diameter of the spray hole of the porous medical water jet scalpel disclosed by the invention is 0.08 mm-0.12 mm, and the two have order of magnitude difference; (e) the width of a cutting slit of the industrial jet device is 0.22-1.1 mm and is about 10% larger than the diameter of the jet hole, while the width of the cutting slit of the porous medical water jet knife realized by scanning is 3-5 mm and is about 30-50 times of the diameter of the jet hole, and the width and the diameter of the cutting slit are different by orders of magnitude; (f) the working pressure of the industrial jet device is low pressure of 30 MPa-50 MPa, high pressure of more than 100MPa and ultrahigh pressure of more than 200MPa, while the working pressure of the porous medical water jet scalpel disclosed by the invention is 1 MPa-10 MPa, and the working pressure have magnitude difference.

It should be noted that, the present disclosure mainly takes the liver parenchyma and the lumen tissue in the liver cancer operation as the operation object for example, but the porous medical water jet scalpel of the present disclosure is not limited to the liver cancer operation, and may also be applied to operations such as benign tumor resection, organ transplantation, etc., and the operation object of the porous medical water jet scalpel may also be applied to other biological tissues having similar requirements and characteristics, such as the parenchyma tissue and the lumen tissue (e.g., bile duct, ureter, bronchus, etc.) corresponding to other human organs (e.g., lung, kidney, spleen, etc.), which may be determined according to actual situations, and the embodiment of the present disclosure is not limited thereto.

It should be further noted that, in some embodiments, the plurality of nozzle holes (for example, the number is greater than or equal to 2) of the nozzle head of the present disclosure may use part of the nozzle holes (not less than two) to spray the medical liquid to selectively separate the biological tissue, or may use all the nozzle holes to spray the medical liquid to selectively separate the biological tissue, which is not limited by the present disclosure, and may be determined according to practical situations, for example, refer to the following related contents of the operation device that the operation device continues to operate due to the partial nozzle hole blockage of the porous medical water jet scalpel, which will not be described herein again.

For example, in some embodiments of the present disclosure, the material of the showerhead 110 includes one or more of the following: metal, precious stone. For example, the spray head 110 may be implemented by artificial gem stone (e.g., ruby or sapphire), metal sheet (e.g., stainless steel sheet), and the like.

For example, in some embodiments of the present disclosure, the material of the spout 120 includes one or more of the following: metal, plastic. For example, the material of the nozzle 120 includes stainless steel and/or PTFE (polytetrafluoroethylene).

For example, in some embodiments of the present disclosure, the plurality of orifices 111 are uniformly arranged. For example, the uniform arrangement of the plurality of nozzle holes 111 may mean that a pattern surrounded by the plurality of nozzle holes 111 is a symmetrical pattern, and the center distances between any one nozzle hole 111 and a corresponding adjacent nozzle hole 111 are respectively equal. Of course, this is merely exemplary and not a limitation of the present disclosure.

For example, in some embodiments of the present disclosure, the center-to-center distance between two adjacent nozzle holes 11 in the plurality of nozzle holes 111 is 0.4-4.0 mm.

For example, the inner diameter of the outer suction pipe 130 is 3 to 7.6mm, and the outer diameter of the outer suction pipe 130 is 4 to 8 mm. For example, the material of the suction outer tube 130 includes stainless steel and/or PSU (polysulfone plastic).

In some embodiments of the present disclosure, a porous medical water jet may be used in a small area (e.g., 20 mm)²Left and right) area, and brings clustering effect, so that the completion degree and penetration degree of selective separation are obviously improved, the cutting depth in unit time is increased, and the selective separation efficiency is improved.

For example, the jet connection tube 160 may have an outer diameter of about 4mm, an inner diameter of about 2mm, and a length of about 3m, and the material of the jet connection tube 160 may include PTFE.

For example, the suction connection tube 150 has an outer diameter of about 8mm, an inner diameter of about 6mm, and a length of about 3m, and the material of the suction connection tube 150 may include PVC (polyvinyl chloride).

For example, the material of the spray adaptor 170 may include stainless steel and/or PEEK (polyetheretherketone resin).

For example, the material of the suction adapter 180 may include one or more of the following: ABS (acrylonitrile-butadiene-styrene copolymer), PC (polycarbonate), silica gel, rubber.

Fig. 3a is a schematic view of a first structure of a spray head and a spray pipe according to some embodiments of the present disclosure, and fig. 3b is a left side view of the first structure of fig. 3 a.

As shown in fig. 3a and 3b, the left end (also referred to as the head end) of the nozzle 120 is a blind end 101, and at least a portion of the blind end 101 is used as the nozzle 110.

For example, in the example of fig. 3a and 3b, the material of the nozzle 120 includes stainless steel and/or PTFE. The nozzle 120 has an outer diameter of about 3mm and an inner diameter of about 2 mm. The wall thickness of the blind end 101 is about 1 mm. For example, the plurality of nozzle holes 111 are obtained by directly machining micro holes with a diameter of 0.1mm on the left end surface of the blind end 101, for example, the number of the plurality of nozzle holes 111 on the left end surface of the blind end 101 is 3 and the three nozzle holes 111 are uniformly arranged, that is, the center distances of two adjacent nozzle holes 111 are equal, and the center points of the three nozzle holes 111 are symmetrically arranged around the center point of the end surface of the blind end 101.

Fig. 4a is a schematic diagram of a uniform arrangement of three nozzle holes according to some embodiments of the present disclosure.

As shown in fig. 4a, the number of the plurality of nozzle holes 111 of the medical water jet 100 is 3, and the three nozzle holes 111 are uniformly arranged. For example, the three injection holes 111 in the example of fig. 4a may be connected in sequence to form an equilateral triangle, and the centers of two adjacent injection holes 111 are equidistant and in the range of 0.4mm to 4.0 mm.

Fig. 4b is a schematic diagram of a uniform arrangement of four nozzle holes according to some embodiments of the present disclosure.

As shown in fig. 4b, the number of the plurality of nozzle holes 111 of the medical water jet 100 is 4, and the four nozzle holes 111 are uniformly arranged. For example, the four nozzles 111 in the example of fig. 4b are connected in sequence to form a square, and the centers of two adjacent nozzles 111 are equidistant and in the range of 0.4mm to 4.0 mm.

Fig. 4c is a schematic diagram of a uniform arrangement of five nozzle holes according to some embodiments of the present disclosure.

As shown in fig. 4c, the number of the plurality of nozzle holes 111 of the medical water jet 100 is 5, and the five nozzle holes 111 are uniformly arranged. For example, one of the five nozzle holes 111 illustrated in fig. 4c is located at the center and the other four nozzle holes 111 are uniformly distributed around the periphery of the center nozzle hole 111, the four nozzle holes 111 at the periphery are sequentially connected to form a square, the center distance between any two adjacent nozzle holes 111 in the four nozzle holes 111 at the periphery is equal and is in the range of 0.4mm to 4.0mm, and the center distance from the center nozzle hole 111 to any nozzle hole 111 at the periphery is also equal.

Fig. 4d is a schematic diagram of a uniform arrangement of seven orifices provided by some embodiments of the present disclosure.

As shown in fig. 4d, the number of the plurality of injection holes 111 of the medical water jet 100 is 7, and the seven injection holes 111 are uniformly arranged. For example, one of the seven nozzle holes 111 illustrated in fig. 4d is located at the center and the other six nozzle holes 111 are uniformly distributed around the periphery of the center nozzle hole 111, the six nozzle holes 111 at the periphery are sequentially connected to form a regular hexagon, the center distances of two adjacent nozzle holes 111 in the six nozzle holes 111 at the periphery are equal and are in the range of 0.4mm to 4.0mm, and the center distances from the nozzle hole 111 at the center to any nozzle hole 111 at the periphery are also equal.

Fig. 4e is a schematic diagram of a uniform arrangement of nine nozzle holes according to some embodiments of the present disclosure.

As shown in fig. 4e, the number of the plurality of nozzle holes 111 of the medical water jet 100 is 9, and the nine nozzle holes 111 are uniformly arranged. For example, one of the nine nozzle holes 111 illustrated in fig. 4e is located at the center and the other eight nozzle holes 111 are uniformly distributed around the periphery of the center nozzle hole 111, the eight nozzle holes 111 at the periphery are sequentially connected to form a square, the center distances of two adjacent nozzle holes 11 in the eight nozzle holes 111 at the periphery are equal, the eight nozzle holes 111 at the periphery are sequentially connected to form a square, two diagonal lines of the square pass through the center nozzle hole 111, the center distance of two adjacent nozzle holes 11 in the eight nozzle holes 111 at the periphery is in the range of 0.4mm to 4.0mm, and the center distance from the center nozzle hole 111 to any nozzle hole 111 at the periphery is also in the range of 0.4mm to 4.0 mm.

Fig. 4f is a schematic diagram of a uniform arrangement of twenty-one orifices provided by some embodiments of the present disclosure.

As shown in fig. 4f, the number of the plurality of nozzle holes 111 of the medical water jet 100 is 21, and the twenty-one nozzle holes 111 are uniformly arranged. For example, one of the twenty-one nozzle holes 111 illustrated in fig. 4f is located at the center and the other twenty nozzle holes 111 surround the center nozzle hole 111 and are uniformly distributed layer by layer in the up-down, left-right directions around the center nozzle hole 111. For example, the twenty-one nozzle holes 111 form five rows and five columns of nozzle holes 111, each row in the middle three rows comprises five nozzle holes 111, each row on the upper side and the lower side comprises three nozzle holes, and the center distance of two adjacent nozzle holes 11 in each row or each column is equal and is in the range of 0.4mm to 4.0 mm.

It should be noted that, the number of the plurality of nozzle holes 111 included in the medical water jet 100 is not limited in the present disclosure, and the specific layout manner of the plurality of nozzle holes is also not limited, which is not described herein again.

It should be further noted that, in some embodiments of the present disclosure, designing a nozzle with multiple nozzle holes in the medical water jet 100 is not easy to implement, and there are the following technical difficulties: (a) the diameter of the outer tube (e.g., the suction outer tube 130) of the medical water jet scalpel 100 is not limited to be less than 5mm, because the outer tube portion on the left side (near the output end) of the medical water jet scalpel 100 needs to be pierced by the puncture outfit during the operation and then extend into the body, and the puncture outfit for realizing the piercing generally has a corresponding specification, such as a specification including but not limited to a diameter of 5mm to 10mm, as the case may be, whereby the diameter of the outer tube portion of the medical water jet scalpel 100 is not more than a reasonable range of the corresponding specification, such as a range of 5mm to 5.4mm corresponding to a diameter specification of 5 mm; (b) the outer tube of the medical water jet scalpel 100 is also required to be arranged with a corresponding cross-sectional area (for example, not less than 5mm corresponding to 5mm diameter specification)²) A suction channel of (a); (3) the diameter of the spray hole is small, for example, about 0.08 mm-0.12 mm, and the spray hole is difficult to machine and realize; (4) the end face of the spray hole and the cylindrical surface of the spray pipe are required to have the surface roughness as small as possible due to the requirement of jet flow, for example, the surface roughness is generally required to be not more than Ra 0.4 mu m; (5) the high-pressure spray pipe and the spray hole parts also need to be positioned, fixed and sealed; (6) the handle of a disposable medical water jet needs to be as low cost as possible. Therefore, based on the technical difficulties, the idea and solution of the porous medical water jet according to the corresponding embodiments are not easy to be conceived by those skilled in the art.

For example, in some embodiments of the present disclosure, the nozzle 110 includes a multi-orifice sub-nozzle having a plurality of nozzle holes 111. For example, in other embodiments of the present disclosure, the nozzle 110 includes a plurality of single-hole sub-nozzles, and each of the plurality of nozzle holes 111 opens on a corresponding one of the plurality of single-hole sub-nozzles. It should be noted that, as to whether the showerhead 110 employs a multi-orifice sub-showerhead or a plurality of single-orifice sub-showerheads, the disclosure is not limited thereto, and for example, it may be determined according to different structural forms of the showerhead, which will be exemplified below.

It should be noted that the holes referred to herein may be regular holes or irregular holes, which is not limited in the present disclosure, and the size of the holes referred to herein is described, and does not limit the specific shape of the nozzle holes in the embodiments of the present disclosure, but the holes are generally regarded as circles and the sizes of the holes are represented by the diameters or radii thereof, which is not a key point required for the present disclosure, and is not described herein again.

For example, in some embodiments of the present disclosure, the left end of the nozzle 120 is a blind end, and the spray head 110 is disposed at the blind end of the nozzle 120, for example, in an inlaid manner, as shown in fig. 5a and 5b, and fig. 6a and 6 b.

For example, in other embodiments of the present disclosure, the nozzle 120 is a sleeve with openings at left and right ends, the nozzle 110 is fixed at the left end of the sleeve, and the nozzle 110 is directly or indirectly connected to the left end of the sleeve in a sealing manner, as shown in fig. 7a and 7b, fig. 8a and 8b, fig. 9a and 9b, fig. 10a and 10b, and fig. 11a and 11 b.

Fig. 5a is a schematic view of a second configuration of a spray head and a spray tube according to some embodiments of the present disclosure, and fig. 5b is a left side view of the second configuration of fig. 5 a.

As shown in FIGS. 5a and 5b, the blind end 101 of the spout 120 is formed with a stepped bore for seating the spray head 110. for example, the blind end 101 of the spout 120 includes a blind end surface 101a and a plurality of stepped bores 101 b. The stepped hole 101b includes a first subspace protruding from the blind end surface and a second subspace recessed from the blind end surface, and each of the plurality of single-hole sub-showerheads 110a included in the showerhead 110 is correspondingly fitted into the first subspace of each of the plurality of stepped holes 101 b. For example, if the showerhead 110 in the example of fig. 5b includes a plurality of single-hole sub-showerheads 110a with a number of 3, the number of the stepped holes 101b is also 3, which is merely exemplary and not a limitation of the present disclosure.

For example, in the example of fig. 5a and 5b, the material of the spout 120 comprises stainless steel, and the spout 120 has an outer diameter of about 3mm and an inner diameter of about 2.4 mm. For example, the single-hole sub-showerhead 110a in the example of FIG. 5a is a single-hole jewel having an outer diameter of about 1mm and a thickness of about 0.3 mm.

For example, with respect to the example of fig. 5a and 5b, the single hole injection head 110a is fixed and sealed by placing the single hole injection head 110a into the stepped hole 101b of the left end of the spout 120 and punching a protruding portion of the stepped hole of the spout 120 to be bound inward.

Fig. 6a is a schematic view of a third configuration of spray heads and spray bars provided in some embodiments of the present disclosure, and fig. 6b is a left side view of the third configuration of fig. 6 a.

As shown in fig. 6a and 6b, the left end of the nozzle 120 is a blind end 101. For example, nozzle tip 110 includes a plurality of single-orifice sub-nozzles 110b mounted to blind end 101 at the left end of nozzle 120, and for example, nozzle tip 110 includes a plurality of multi-orifice sub-nozzles 110b mounted to blind end 101 at the left end of nozzle 120.

For example, in the example of fig. 6a and 6b, the material of nozzle 120 comprises PPS plastic, and nozzle 120 has an outer diameter of about 3mm and an inner diameter of about 2 mm. For example, the single-orifice sub-showerhead 110b in the example of FIGS. 6a and 6b has an outer diameter of about 1mm and a thickness of about 0.3 mm.

For example, for the example of fig. 6a and 6b, the securing and sealing of the plurality of single-hole sub-nozzles 110b is formed during injection molding of the nozzle 120 by placing the plurality of single-hole sub-nozzles 110b as inserts into an injection mold.

FIG. 7a is a schematic view of a fourth configuration of a spray head and spout provided in accordance with certain embodiments of the present disclosure, and FIGS. 7B and 7c are schematic views of section A-A and section B-B, respectively, of the fourth configuration of FIG. 7 a.

As shown in fig. 7a to 7c, the left end of the medical water jet scalpel 100 further includes an inlay head 102, the inlay head 102 is fixedly and hermetically connected with the nozzle 120, the nozzle 110 is connected with the nozzle 120 through the inlay head 102, a sink is disposed at the left end of the inlay head 102, the nozzle 110 is disposed in the sink of the inlay head 102, and the side wall of the sink wraps the nozzle 110. The nozzle holes 111, the insert 102, and the nozzle tube 120 are sequentially communicated in parallel with the axial direction of the nozzle tube 120, so that the medical liquid flowing in from the right end of the nozzle tube 120 is smoothly ejected from the plurality of nozzle holes 111.

For example, in the example of fig. 7a to 7c, the outer suction pipe 130 is fitted over the outside of the nozzle 120, and the clearance space 131 between the outer side wall of the nozzle 120 and the inner side wall of the outer suction pipe 130 serves as a suction passage.

For example, in the example of fig. 7a to 7c, the head 110 includes a plurality of single-orifice sub-heads 110c, and each of the plurality of injection orifices 111 is opened on a corresponding one of the plurality of single-orifice sub-heads 110 c.

For example, in the example of fig. 7 a-7 c, the outer suction tube 130 comprises stainless steel, and the outer suction tube 130 has an outer diameter of about 5mm, an inner diameter of about 4.6mm, and a length of about 400 mm. The nozzle 120 comprises stainless steel and the nozzle 120 has an outer diameter of about 2.2mm and an inner diameter of about 2 mm. For example, the damascene head 102 in the example of FIG. 7a is a metal damascene head, and the material of the damascene head 102 includes stainless steel with a shaped cavity for connecting the showerhead 110 and the nozzle 120. For example, the single-hole sub-showerhead 110c in the example of FIG. 7a is a single-hole jewel having an outer diameter of about 1mm and a thickness of about 0.3 mm.

For example, in the example of fig. 7a to 7c, the nozzle 110 and the nozzle 120 are connected, and the connection is welded circumferentially to form a fixing and sealing structure, and the single-hole nozzle 110c is placed in the sink at the left end of the insert 102, and a portion deep in the sidewall of the sink of the insert 102 is punched and covered to surround the single-hole nozzle 110 c.

Fig. 8a is a schematic view of a fifth configuration of a spray head and spout provided in some embodiments of the present disclosure, and fig. 8b is a left side view of the fifth configuration of fig. 8 a.

As shown in fig. 8a and 8b, the left end of the spout 120 is interference fit with the spray head 110. For example, in the example of fig. 8a and 8b, the outer suction pipe 130 is fitted over the outside of the nozzle 120, and the clearance space 131 between the outer side wall of the nozzle 120 and the inner side wall of the outer suction pipe 130 serves as a suction passage.

For example, in the example of fig. 8a and 8b, spray head 110 is a multi-orifice spray head 110, which is held in place and sealed by heating lance 120 to expand its inner orifice to a diameter greater than the outer diameter of spray head 110, placing spray head 110 into the inner orifice of lance 12, and allowing lance 12 to cool and contract to lock spray head 110 in place.

For example, in the example of fig. 8a and 8b, the material of the outer suction tube 130 may comprise stainless steel and/or PSU, with the outer diameter of the outer suction tube 130 being about 5mm and the inner diameter being about 4.6 mm. For example, the nozzle 120 in the example of FIGS. 8a and 8b comprises stainless steel, and the nozzle 120 has an outer diameter of about 3mm and an inner diameter of about 2.6 mm. For example, the porous sub-showerhead 110 in the example of FIGS. 8a and 8b is a single piece of porous jewel having an outer diameter of about 2.6mm and a thickness of about 0.3 mm.

Fig. 9a is a schematic view of a sixth configuration of spray heads and spray bars provided in accordance with some embodiments of the present disclosure, and fig. 9b is a left side view of the sixth configuration of fig. 9 a.

As shown in fig. 9a and 9b, the nozzle 110 is sealingly fixed inside the left end of the spout 120. For example, in the example of fig. 9a and 9b, the nozzle 120 is a PTFE (polytetrafluoroethylene) sleeve, and the nozzle 110 is a multi-orifice nozzle 110, for example, by installing the multi-orifice nozzle 110 into the left end of the inside of the nozzle 120, and then heat-shrinking the left end of the nozzle 120 by applying heat and pressure to the outside of the nozzle 120, thereby fixing and sealing the multi-orifice nozzle 110.

For example, in the example of FIGS. 9a and 9b, the nozzle 120 has an outer diameter of about 3mm and an inner diameter of about 2 mm. For example, the porous sub-showerhead 110 of FIGS. 9a and 9b is a single porous jewel having an outer diameter of about 2mm and a thickness of about 0.3 mm.

Fig. 10a is a schematic view of a seventh configuration of spray heads and spray bars provided by some embodiments of the present disclosure, and fig. 10b is a left side view of the seventh configuration of fig. 10 a.

As shown in fig. 10a and 10b, the left end of the medical water jet scalpel 100 further includes a protection cover 103 with openings at left and right ends, the left end of the nozzle 120 is provided with a first sinking groove 120a, the protection cover 103 is embedded in the first sinking groove 120a of the nozzle 120, the left end of the protection cover 103 is provided with a second sinking groove 103a, and the spray head 110 is embedded in the second sinking groove 103a of the protection cover 103. The nozzle holes 111, the protective cover 103 and the nozzle 120 are sequentially communicated in an axial direction parallel to the nozzle 120, so that the medical liquid flowing from the right end of the nozzle 120 can be smoothly ejected from the plurality of nozzle holes 111.

For example, in the example of fig. 10a and 10b, the material of the spout 120 includes stainless steel, the outer diameter of the spout 120 is about 3mm, the inner diameter is about 2.4mm, and the left end of the spout 120 has a step for inward hemming. For example, the material of the protective sleeve 103 in the example of FIGS. 10a and 10b may comprise copper and/or PTFE, the protective sleeve 103 may have an outer diameter of about 2.6mm and an inner diameter of about 2mm, and the left end of the protective sleeve 103 may be stepped to secure the showerhead 110. For example, the showerhead 110 in the example of FIGS. 10a and 10b is a multi-orifice sub-showerhead 110, the showerhead 110 is a single piece of multi-orifice jewel, the outer diameter of the showerhead 110 is about 2.2mm, the thickness is about 0.3mm, and the spacing between adjacent orifices is about 1 mm.

For example, for the example of fig. 10a and 10b, the porous sub-nozzle 110 is installed in the second sinking groove 103a of the protection sleeve 103, the protection sleeve 103 is installed in the first sinking groove 120a of the nozzle 120, the outer wall of the left end of the nozzle 120 is punched inwards to form a covered edge for fixing the protection sleeve 103 and the porous sub-nozzle 110, and the outer wall of the left end of the protection sleeve 103 is deformed by pressure and is wrapped on the left side surface of the porous sub-nozzle 110. Since the porous sub-head 110 is brittle, thin and fragile, the protective sheath 103 with a certain elasticity is used for buffering and sealing.

Fig. 11a is a schematic view of a configuration eight of a spray head and a spray bar according to some embodiments of the present disclosure, and fig. 11b is a left side view of the configuration eight of fig. 11 a.

As shown in fig. 11a and 11b, the left end of the medical water jet 100 further includes a support sleeve 104, the outer side wall of the left end of the nozzle tube 120 is provided with a step structure, the support sleeve 104 is matched with the step structure of the nozzle tube 120 in shape, the support sleeve 104 extends into the inner cavity of the nozzle tube 120, the nozzle 110 is fixedly connected to the left end of the support sleeve 104, and a part of the space outside the integrated structure where the step structure of the nozzle tube 120, the support sleeve 104 and the nozzle 110 are connected serves as an injection molding region 105.

For example, in the example of fig. 11a and 11b, the extruded nozzle 120, the stamped support sleeve 104 and the injection molded nozzle 110 are connected together and axially compressed, and then the injection molding is performed in the injection molding region 105 (i.e., the over-molding region), i.e., on the outer side of the circumference of the left head end, and after the injection molding flows into the space, the injection molding is fused with the nozzle 120 and the nozzle 110 made of the same material, so that the fixation and the sealing are formed.

For example, in the example of FIGS. 11a and 11b, the material of the nozzle 120 comprises PTFE, and has an outer diameter of about 3mm and an inner diameter of about 2 mm. For example, the material of support sleeve 104 may include stainless steel, which is sized to cooperate with spout 120 and spray head 110, respectively, to provide a positioning feature and to prevent material from leaking into spout 120 during overmolding. For example, the nozzle 110 in the example of fig. 11a and 11b is a multi-orifice nozzle 110, the material of the nozzle 110 includes PTFE, the outer diameter is about 2.6mm, the thickness is about 1mm, and the nozzle 110 includes 3 uniformly distributed nozzle holes, and the distance between the nozzle holes is about 1 mm. For example, the material of the over-molded region comprises PTFE.

Fig. 12 is a table diagram illustrating the results of comparing the separation efficiency and capacity of a single-hole medical water jet and a multi-hole medical water jet according to some embodiments of the present disclosure.

As shown in fig. 12, the selective separation of the medical water jet mainly includes the following three aspects from the performance aspect: the average time of the separation operation, the depth of the separation region per unit time and the retention of luminal tissue (e.g. small vessels/bile ducts). For example, a four-hole medical water jet is compared with a conventional single-hole medical water jet, and the experimental data are shown in the table of fig. 12. As can be seen from the data in the table, compared with a single-hole medical water jet, the multi-hole medical water jet of the embodiment of the disclosure can significantly improve the work efficiency (average consumed time) and the work performance (average depth of a separation region) on the premise of not sacrificing the retention characteristics of small blood vessels. The number, the spacing and the layout mode of the holes of the multi-hole spray head can optimize the performance of the multi-hole water jet cutter and expand the application range, so that more space is provided.

Compared with a single-hole medical water jet scalpel in the prior art, the multi-hole medical water jet scalpel can solve the technical problems of low efficiency, poor effect and difficulty in operation (such as the above) in the process of selectively separating biological tissues in the prior art. Therefore, the porous medical water jet scalpel disclosed by the invention can stand out from a plurality of liver breaking instruments, and provides a high-performance, high-efficiency and convenient-to-use surgical instrument for surgeons.

Fig. 13 is a schematic view of an operation path of a single-hole medical water jet and an operation path of a multi-hole medical water jet according to some embodiments of the present disclosure.

As shown in fig. 13, a path S11 shows an operation path of a nozzle hole of a single-hole medical water jet scalpel, a path S12 shows an operation path of a handle of the single-hole medical water jet scalpel, a path S21 shows an operation path of a nozzle hole of a multi-hole medical water jet scalpel (for example, a three-hole medical water jet scalpel), and a path S22 shows an operation path of a handle of the multi-hole medical water jet scalpel (for example, a three-hole medical water jet scalpel), wherein the vertical direction of fig. 13 shows the longitudinal direction of a cutting band, and the horizontal direction of fig. 13 shows the width direction of the cutting band.

For example, as mentioned above, the porous medical water jet needs to complete cutting or clearing of liver parenchyma and retention and exposure of lumen-like tissue in a cutting zone having a certain width and length, for example, the width of the cutting zone can be 30-50 times the diameter of the jet orifice. For example, since the jet of the medical water jet scalpel is a fine water column with a small diameter (e.g. 0.1mm), and the medical water jet scalpel can only generate the cutting and breaking effects on the path that the jet stream passes through, in order to expose a certain part of lumen-like tissue (e.g. a certain part of blood vessels and bile ducts of the liver), the doctor needs to make the path of the jet stream fully cover in this area, i.e. the doctor can perform the scanning method as shown in fig. 13, so as to form a reciprocating zigzag path.

For example, where a blood vessel in an area of 5mm lateral width and 30mm longitudinal length is desired to be exposed, to achieve selective separation of full coverage, the drop point of the jet can be rocked side to side while moving slowly downward to achieve coverage scanning of the entire area. For the single-hole medical water jet scalpel, the path of the jet flow falling point is completely the same as the path of the jet hole and the path of the handle. However, for the multi-hole medical water jet scalpel, a plurality of jets are ejected simultaneously, and each time the handle moves transversely, the operation is equivalent to that a plurality of jets scan transversely simultaneously. Therefore, only a small amount of transverse movement of the porous medical water jet handle is needed to complete the coverage scan of the corresponding area.

Referring to fig. 13, the single-hole medical water jet scalpel is operated in a single line, and the multi-hole medical water jet scalpel is operated in multiple lines, for example, the time required for liver breaking of the single-hole medical water jet scalpel is about 60 minutes, and the time required for liver breaking of the three-hole medical water jet scalpel is about 20 minutes. In theory, the transverse moving times of the handle of the porous medical water jet (for example, the medical water jet is marked as n-hole medical water jet) are only 1/n of the transverse moving times of the handle of the single-hole medical water jet, and accordingly, the operation time is shortened to 1/n, which means that the coverage area of the jet cutting action in unit time can be increased by the porous jet, the working efficiency of the medical water jet is improved, and the operation efficiency is improved. And due to the cluster effect formed by the porous jet flow, the working efficiency and the working performance can be further improved.

In the aspect of handle operation, the existing single-hole medical water jet scalpel swings transversely at a high frequency, but the multi-hole medical water jet scalpel disclosed by the embodiment of the disclosure only swings transversely at a low frequency, so that the difficulty of operation can be greatly reduced, and particularly in an endoscopic surgical environment, complicated operation is one of pain points of a doctor using the single-hole water jet scalpel, so that the difference between the single-hole medical water jet scalpel and the multi-hole medical water jet scalpel in clinical application is more obvious.

It should be noted that the multi-hole medical water jet scalpel disclosed in at least one embodiment of the present disclosure can also solve the problem that the whole apparatus fails due to the blockage of the nozzle hole, which is likely to occur in a single-hole medical water jet scalpel.

For example, the failure rate of the blockage of the nozzle hole of the existing single-hole medical water jet scalpel is about 20%, and the blockage of the nozzle hole of the single-hole medical water jet scalpel can directly cause that the surgical equipment can not work and can not be repaired, thereby seriously affecting the surgical process. If a multi-hole medical water jet scalpel is adopted, for example, a four-hole medical water jet scalpel is taken as an example, the failure rate of the four-hole medical water jet scalpel which is completely blocked and cannot work can be reduced to be less than 0.16 percent, for example, a seven-hole medical water jet scalpel is taken as an example, the failure rate of the seven-hole medical water jet scalpel which is completely blocked and cannot work can be reduced to be less than 0.00128 percent and is far less than the failure rate of a single-hole medical water jet scalpel, and therefore, the multi-hole medical water jet scalpel can become an instrument which can be trusted by doctors.

Fig. 14 is a view illustrating a treatment effect of a multi-hole medical water jet according to some embodiments of the present disclosure, and fig. 15 is a view illustrating a treatment effect of a single-hole medical water jet according to some embodiments of the present disclosure.

For example, in some instances, the parenchymal tissue residue in fig. 14 is much less than the parenchymal tissue residue in fig. 15, and as can be seen in fig. 14, the parenchymal tissue is substantially cut, cleared; the depth of the separation region in fig. 14 is greater than that of the separation region in fig. 15, and the retention effect of the lumen-like tissue in fig. 14 is superior to that of the lumen-like tissue in fig. 15. Therefore, the selective separation effect of the porous medical water jet is far better than that of the single-hole medical water jet.

In summary, the embodiment of the present disclosure can design the porous medical water jet based on clinical requirements, and on the basis of maintaining the technical advantages of the original single-hole medical water jet, the surgical efficiency and effect of selective separation of the water jet can be improved, the surgical operation is simplified, and the problem that the water jet cannot work after the nozzle holes are blocked can be solved, thereby providing a more ideal technical scheme for corresponding surgical treatment.

It should be noted that, in the above embodiments of the present disclosure, when the technical solution of the medical water jet scalpel is described, the medical water jet scalpel is divided into elements or objects for performing corresponding functions, however, it is clear to those skilled in the art that the functions performed by each element or object may be performed under the above-mentioned division, or may be performed under other division manners, which does not limit the scope of the present disclosure, and the meaning, function, and the like of the elements or objects of the above embodiments of the present disclosure are not limited by their names, and cannot be interpreted in an idealized or extremely formal sense.

The following points need to be explained:

(1) the drawings of the embodiments of the disclosure only relate to the structures related to the embodiments of the disclosure, and other structures can refer to common designs.

(2) Without conflict, embodiments of the present disclosure and features of the embodiments may be combined with each other to arrive at new embodiments.

The above description is only a specific embodiment of the present disclosure, but the scope of the present disclosure is not limited thereto, and the scope of the present disclosure should be subject to the scope of the claims.