阅读说明：本技术 一种隔离器械及医疗设备 (Isolation instrument and medical equipment ) 是由 王永刚 江荣华 罗森 于 2019-11-28 设计创作，主要内容包括：本发明的实施例提供了一种隔离器械及医疗设备,涉及医疗器械技术领域。本发明的实施例提供的隔离器械包括导杆以及球囊,球囊连接在导杆上。球囊具有弹性,且球囊内具有用于容纳介质的容纳腔,导杆内具有与所述容纳腔连通的介质通道,通过介质通道向容纳腔内充放介质,以使球囊发生弹性变形,从而改变球囊的体积,隔离时,通过向容纳腔充入介质使得球囊体积增大,从而对病灶和正常脏器进行有效隔离,隔离效果好。同时球囊的外表面设置有筋条,多个筋条绕球囊的周向均匀设置,从而在对容纳腔充放介质时,球囊各处的变形更加均匀,进而有助于提高隔离效果。(The embodiment of the invention provides an isolation instrument and medical equipment, and relates to the technical field of medical instruments. Embodiments of the present invention provide an isolation device that includes a guide shaft and a balloon coupled to the guide shaft. The sacculus has elasticity, and has the chamber that holds that is used for holding the medium in the sacculus, have in the guide arm with hold the medium passageway of chamber intercommunication, fill the medium through the medium passageway to holding the intracavity to make the sacculus take place elastic deformation, thereby change the volume of sacculus, during the isolation, make the sacculus volume increase through filling the medium into holding the chamber, thereby effectively keep apart focus and normal internal organs, keep apart effectually. Simultaneously, the outer surface of the balloon is provided with ribs, and a plurality of ribs are uniformly arranged around the circumference of the balloon, so that when a medium is filled and discharged in the accommodating cavity, the deformation of each part of the balloon is more uniform, and the isolation effect is improved.)

1. An isolation instrument is used for isolating focus and normal visceral organs, and is characterized by comprising a guide rod and an elastic saccule; the balloon is provided with a containing cavity for containing a medium; the balloon is connected to the guide rod, a medium channel communicated with the accommodating cavity is formed in the guide rod, and the medium channel is used for introducing the medium into the balloon so as to change the volume of the balloon; the surface of sacculus is provided with the rib, and is a plurality of the rib is around the even setting of circumference of sacculus.

2. The isolation instrument of claim 1, wherein the balloon is wrapped outside of the guide rod, and the guide rod extends through the balloon along an axis of the balloon.

3. An isolation instrument as claimed in claim 2, wherein a plurality of said ribs are uniformly disposed about said axis.

4. The isolation instrument of claim 3, wherein the balloon has first and second ends disposed opposite along the axis, the first and second ends being fixedly coupled to the guide rod, respectively, the ribs extending from the first end to the second end.

5. The isolation instrument of claim 1, further comprising a switch valve connected to the guide rod, the switch valve being located at an end of the media channel remote from the receiving cavity, the switch valve being configured to control the opening and closing of the media channel.

6. The isolation instrument of claim 1, wherein one end of the guide rod is formed with a piercing end that is spaced from the balloon.

7. The isolation instrument of claim 6, wherein the guide comprises a main guide tube and a stylet disposed within the main guide tube; the saccule is connected to the outer wall surface of the main delivery pipe, and the medium channel is arranged in the main delivery pipe; one end of the needle core extends out of the main guide tube to form the puncture end.

8. The isolation instrument of claim 7, wherein a first channel is disposed within the main delivery tube, the stylet is disposed through the first channel, and the stylet is removably connected to the main delivery tube.

9. An isolation instrument as claimed in claim 8, wherein the guide rod further comprises a docking head connected to an end of the main guide tube distal to the piercing end, the docking head comprising a body and first and second branch conduits fixedly connected to the body; the body is fixedly connected with the main conveying pipe; the first branch conduit is communicated with the medium channel; the second branch conduit is communicated with the first channel, the needle core sequentially penetrates through the second branch conduit and the first channel, and the needle core is detachably connected with the second branch conduit.

10. The isolation instrument of claim 7, wherein the main guide tube has a guide surface located between the piercing end and the balloon, and the guide surface is configured to guide the balloon into a piercing channel formed by the piercing end.

11. The isolation instrument of claim 1, wherein the guide rod further comprises a second channel having an opening therein, the opening adapted to communicate the second channel with a gap between the lesion and the normal organ when the isolation instrument isolates the lesion from the normal organ.

12. The isolation instrument of claim 11, wherein the guide comprises a main guide tube and a stylet disposed within the main guide tube; the second channel is arranged in the main guide pipe, or the second channel is arranged in the needle core.

13. A medical device, characterized in that it comprises an isolation instrument according to any of claims 1-12.

Technical Field

The invention relates to the technical field of medical instruments, in particular to an isolation instrument and medical equipment.

Background

The thermal ablation technology is a mainstream tumor treatment means in clinic at present, and the main modes of the thermal ablation technology comprise radio frequency ablation and microwave ablation, medical image guidance is adopted during operation, an implanted radio frequency ablation needle, a microwave ablation needle and the like are placed in tumor tissues through skin, a laparoscope, even a digestive endoscope and the like, the temperature is increased to the local high temperature of more than 50 ℃ through power radiation and is kept for several minutes until tumor cells are solidified and necrotized, and therefore the purpose of in-situ inactivation or local eradication of the tumor tissues is achieved.

When the heat ablation is carried out, in order to ensure the treatment effect, the purpose of completely inactivating the focus is achieved by increasing an ablation area, but the ablation transition easily damages normal visceral organs around the focus, in order to improve the problem, the normal visceral organs are generally protected by injecting physiological saline clinically, but due to the mobility of water, the good protection effect cannot be achieved even if a large amount of physiological saline is injected.

Disclosure of Invention

The invention aims to provide an isolation instrument which can isolate a normal organ from a focus, so that the normal organ can be protected and the isolation effect is good.

It is also an object of the present invention to provide a medical device comprising an isolation instrument as described above.

Embodiments of the invention may be implemented as follows:

the embodiment of the invention provides an isolation instrument for isolating a focus from a normal visceral organ, which comprises a guide rod and an elastic balloon; the balloon is provided with a containing cavity for containing a medium; the balloon is connected to the guide rod, a medium channel communicated with the accommodating cavity is formed in the guide rod, and the medium channel is used for introducing the medium into the balloon so as to change the volume of the balloon; the surface of sacculus is provided with the rib, and is a plurality of the rib is around the even setting of circumference of sacculus.

Optionally, the balloon is wrapped outside the guide rod, and the guide rod penetrates the balloon along an axis of the balloon.

Optionally, a plurality of said ribs are evenly disposed about said axis.

Optionally, the balloon has a first end and a second end disposed opposite to each other along the axis, the first end and the second end are respectively fixedly connected to the guide rod, and the ribs extend from the first end to the second end.

Optionally, the isolation instrument further comprises a switch valve connected to the guide rod, the switch valve is located at one end of the medium channel far away from the accommodating cavity, and the switch valve is used for controlling on-off of the medium channel.

Optionally, one end of the guide rod is formed with a puncture end, and the puncture end is spaced apart from the balloon.

Optionally, the guide rod comprises a main guide tube and a stylet disposed within the main guide tube; the saccule is connected to the outer wall surface of the main delivery pipe, and the medium channel is arranged in the main delivery pipe; one end of the needle core extends out of the main guide tube to form the puncture end.

Optionally, a first channel is arranged in the main delivery pipe, the needle core is arranged in the first channel in a penetrating mode, and the needle core is detachably connected with the main delivery pipe.

Optionally, the guide rod further comprises a docking head connected to one end of the main guide tube away from the puncture end, and the docking head comprises a body, and a first branch conduit and a second branch conduit fixedly connected to the body; the body is fixedly connected with the main conveying pipe; the first branch conduit is communicated with the medium channel; the second branch conduit is communicated with the first channel, the needle core sequentially penetrates through the second branch conduit and the first channel, and the needle core is detachably connected with the second branch conduit.

Optionally, the main guide tube has a guide surface located between the piercing end and the balloon for guiding the balloon into a piercing channel formed by the piercing end.

Optionally, a second channel with an opening is further disposed in the guide rod, and when the isolating instrument isolates the lesion from the normal visceral organ, the opening is used for communicating the second channel with a gap between the lesion and the normal visceral organ.

Optionally, the guide rod comprises a main guide tube and a stylet disposed within the main guide tube; the second channel is arranged in the main guide pipe, or the second channel is arranged in the needle core.

Embodiments of the invention also provide a medical device. The medical device comprises the isolation instrument.

The beneficial effects of the isolation instrument and the medical equipment of the embodiment of the invention include, for example:

embodiments of the present invention provide an isolation instrument that includes a guide shaft and a balloon coupled to the guide shaft. The sacculus has elasticity, and has the chamber that holds that is used for holding the medium in the sacculus, have in the guide arm with hold the medium passageway of chamber intercommunication, fill the medium through the medium passageway to holding the intracavity to make the sacculus take place elastic deformation, thereby change the volume of sacculus, during the isolation, make the sacculus volume increase through filling the medium into holding the chamber, thereby effectively keep apart focus and normal internal organs, keep apart effectually. Simultaneously, the outer surface of the balloon is provided with ribs, and a plurality of ribs are uniformly arranged around the circumference of the balloon, so that when a medium is filled and discharged in the accommodating cavity, the deformation of each part of the balloon is more uniform, and the isolation effect is improved.

Embodiments of the present invention also provide a medical device comprising an isolation instrument as described above. Because the medical equipment comprises the isolation instrument, the medical equipment also has the beneficial effects that the focus and the normal visceral organs can be effectively isolated, and the isolation effect is good.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

FIG. 1 is a schematic view of the overall structure of an isolation instrument provided in accordance with an embodiment of the present invention;

FIG. 2 is a schematic cross-sectional view of an isolation instrument according to an embodiment of the present invention;

FIG. 3 is an enlarged view of a portion of the structure at III in FIG. 2;

FIG. 4 is a schematic view of a portion of an isolation instrument according to an embodiment of the present invention;

FIG. 5 is a schematic cross-sectional view of an isolation instrument according to an embodiment of the present invention from a second perspective;

FIG. 6 is a schematic diagram of an exploded view of an isolation instrument according to an embodiment of the present invention;

FIG. 7 is a schematic cross-sectional view of an explosive structure of an isolation instrument provided in accordance with an embodiment of the present invention;

FIG. 8 is a schematic view of the overall configuration of a second isolation instrument provided in accordance with an embodiment of the present invention;

FIG. 9 is a schematic view of a portion of a second isolation instrument according to an embodiment of the present invention.

Icon: 10-an isolation instrument; 100-a guide rod; 110-a main transport pipe; 111-a guide surface; 112-media channels; 113-a first channel; 114-scale; 120-a needle core; 121-a puncture tip; 122-a second connector; 130-a butt joint; 131-a body; 132-a first branch conduit; 133-a second branch conduit; 134-a third branch conduit; 135-a first connector; 141-a second channel; 142-an opening; 151-first protective cap; 152-a second protective cap; 153-third protective cap; 160-on-off valve; 200-a balloon; 211-a containment chamber; 212-ribs; 213-a first end; 214-second end.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that if the terms "upper", "lower", "inside", "outside", etc. indicate an orientation or a positional relationship based on that shown in the drawings or that the product of the present invention is used as it is, this is only for convenience of description and simplification of the description, and it does not indicate or imply that the device or the element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention.

Furthermore, the appearances of the terms "first," "second," and the like, if any, are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

It should be noted that the features of the embodiments of the present invention may be combined with each other without conflict.

Fig. 1 is a schematic overall structural diagram of an isolation device 10 provided in this embodiment, fig. 2 is a schematic cross-sectional structural diagram of the isolation device 10 provided in this embodiment at a first viewing angle, and fig. 3 is an enlarged schematic partial structural diagram at iii in fig. 2. Referring to fig. 1-3 in combination, the present embodiment provides an isolation instrument 10 and, accordingly, a medical device (not shown).

Isolation instrument 10 includes a guide rod 100 and a balloon 200, balloon 200 being attached to guide rod 100. The sacculus 200 has elasticity, the sacculus 200 is internally provided with an accommodating cavity 211 for accommodating a medium, the guide rod 100 is internally provided with a medium channel 112 communicated with the accommodating cavity 211, the medium channel 112 is used for filling the medium into the accommodating cavity 211 so as to enable the sacculus 200 to generate elastic deformation, and therefore the volume of the sacculus 200 is changed, during isolation, the medium is filled into the accommodating cavity 211 so as to enable the volume of the sacculus 200 to be increased, so that the focus and normal organs are effectively isolated, and the isolation effect is good. Meanwhile, ribs 212 are arranged on the outer surface of the balloon 200, and the plurality of ribs 212 are uniformly arranged around the circumference of the balloon 200, so that when media are charged and discharged in the accommodating cavity 211, deformation of all parts of the balloon 200 is more uniform, and the isolation effect is improved.

The medical equipment comprises an isolation instrument 10 and an inflation and deflation device for inflating and deflating the balloon 200, and the balloon 200 is inflated and deflated through the inflation and deflation device so as to deform the balloon 200, change the volume of the balloon 200 and realize effective isolation of a focus and normal visceral organs.

The isolation instrument 10 provided in this embodiment is further described below:

it should be noted that, in the present embodiment, the isolating device 10 is described as an example of isolating a lesion from a normal organ in a thermal ablation operation, specifically, the lesion is a liver, and the normal organ is a diaphragm, and it should be understood that, in other embodiments, the isolating device 10 may also be used to isolate other organs, for example, to isolate a liver from an intestinal tract, according to requirements. In the description of the present embodiment, the "normal organ" is an organ that is not affected or does not require treatment.

Fig. 4 is a partial structural schematic view of the isolation instrument 10 provided in this embodiment. Referring to fig. 1 and 4, in the present embodiment, the guide rod 100 penetrates the balloon 200, two ends of the guide rod 100 are both located outside the balloon 200, and one end of the guide rod 100 is provided with the puncturing end 121, so that when the device is used, the puncturing end 121 punctures, and the isolation instrument 10 is delivered into a human body to isolate an organ to be isolated. Optionally, guide 100 is cylindrical to facilitate better penetration and reduce trauma to the body.

Referring to fig. 1 to 4, the balloon 200 is spherical, and further, the axis of the guide rod 100 passes through the center of the balloon 200, that is, the guide rod 100 passes through the balloon 200 along the axis L of the balloon 200, and the axis L coincides with the axis of the guide rod 100, so that the balloon 200 is uniformly distributed along the circumferential direction of the guide rod 100, and when the balloon 200 is inflated, the position of the guide rod 100 is hardly changed, and the using effect is better. Optionally, the balloon 200 is made of medical silica gel, which has good elasticity, so that the manufactured balloon 200 can smoothly recover the recovery state under the action of its own elastic force after the medium in the accommodating cavity 211 leaves from the medium channel 112, and the recovery work after use is facilitated to be smoothly performed.

Further, balloon 200 has opposing first and second ends 213, 214, first and second ends 213, 214 being spaced apart along axis L. Specifically, the first end 213 and the second end 214 are both provided with a connecting hole penetrating through the balloon 200, and when the balloon is installed, the guide rod 100 sequentially passes through the connecting hole of the first end 213 and the connecting hole of the second end 214, so as to penetrate through the balloon 200, and one end of the guide rod protrudes out of the balloon 200 to form the puncture end 121. First end 213 and second end 214 are then fixedly attached to guide rod 100 to close both attachment holes, thereby forming closed receiving cavity 211 within balloon 200.

Further, ribs 212 are further arranged on the outer surface of the balloon 200, and the plurality of ribs 212 are uniformly arranged in the circumferential direction of the balloon 200. Through setting up rib 212 for when sacculus 200 is expanding, sacculus 200 can obtain more even inflation effect everywhere radially. Specifically, ribs 212 are bar-shaped protrusions formed by radially outwardly projecting the outer surface of balloon 200. Further, the plurality of ribs 212 are evenly distributed about the axis L, and the ribs 212 extend from the first end 213 of the balloon 200 to the second end 214 of the balloon 200 to provide a more uniform inflation throughout the balloon 200.

Fig. 5 is a schematic cross-sectional view of the isolation device 10 provided in this embodiment from a second perspective, fig. 6 is a schematic cross-sectional view of the isolation device 10 provided in this embodiment from an exploded view, and fig. 7 is a schematic cross-sectional view of the isolation device 10 provided in this embodiment from an exploded view. Referring to fig. 1, 5, 6 and 7, in the present embodiment, the guide 100 includes a main guide tube 110 and a needle core 120 disposed inside the main guide tube 110, and one end of the needle core 120 is disposed as a sharp structure, and the sharp structure is disposed to extend out of the main guide tube 110, so as to form a piercing end 121 of the guide 100. Optionally, the needle core 120 is made of medical metal material, so that the needle core 120 has sufficient rigidity to puncture; the main guide tube 110 is made of medical plastic material, so that the influence on the human body can be reduced in the process that the main guide tube 110 enters the human body, and the manufacturing cost is reduced.

The balloon 200 is fixedly connected to the outer wall of the main transmission pipe 110, the main transmission pipe 110 is internally provided with a medium channel 112, the medium channel 112 extends along the axis of the main transmission pipe 110 and is communicated with the accommodating cavity 211 of the balloon 200 through the outer wall of the main transmission pipe 110, so that the accommodating cavity 211 is filled with a medium through the medium channel 112 to adjust the volume of the balloon 200, and the balloon 200 is switched between a recovery state and an expansion state. It should be noted that, in the description of the present embodiment, the "medium" is a gaseous or liquid substance, such as carbon dioxide, saline, and the like, and can overcome the elastic force of the balloon 200, so that the balloon 200 is elastically deformed to change the volume.

Referring to fig. 5, in the present embodiment, a first channel 113 is further disposed in the main delivery conduit, the needle core 120 is disposed in the first channel 113, and the needle core 120 is detachably connected to the main delivery conduit 110. Specifically, the first channel 113 is disposed through the main guide tube 110 along the axis of the main guide tube 110, and when installed, the sharp structure of the stylet 120 is inserted into the first channel 113 from one end of the first channel 113 and the sharp structure is threaded out from the other end of the first channel 113, such that the sharp structure forms the piercing end 121 of the guide 100. Alternatively, the stylet 120 is cylindrical and the pointed structure is conical shaped configured as the end of the stylet 120. It will be appreciated that in other embodiments, the configuration of the sharp structures may be specifically configured as desired, such as by beveling the end of the stylet 120 to form a wedge-shaped sharp structure.

Further, the main feeding portion also has a guide surface 111. Puncture end 121 is spaced apart from balloon 200, and guide surface 111 is positioned between puncture end 121 and balloon 200 to guide balloon 200 by guide surface 111 into the puncture channel formed by puncture end 121. Specifically, the guide surface 111 is a tapered surface that gradually increases in radial dimension from the puncture tip 121 to the balloon 200. Optionally, the first channel 113 is arranged coaxially with the main guide tube 110, and the guiding surface 111 and the piercing end 121 form a large-sized conical shape. It will be appreciated that in other embodiments, the shape of the guide surface 111 may be provided as desired, for example, the guide surface 111 may be provided as a sloped surface.

Further, the guide 100 further includes a docking head 130 attached to an end of the main guide tube 110 distal to the piercing end 121. Specifically, the docking head 130 includes a body 131, a first branch conduit 132, and a second branch conduit 133. The first branch conduit 132 and the second branch conduit 133 are fixedly connected with the body 131. The main tube 131 is fixedly connected to an end of the main tube 110 away from the guide surface 111, and the main tube 131 has two channels therein, which are a first channel and a second channel. Both ends of the first channel are respectively communicated with the medium channel 112 and the first branch conduit 132, so that the first branch conduit 132 is communicated with the medium channel 112; both ends of the second channel are respectively communicated with the first channel 113 and the second branch conduit 133, thereby communicating the second branch conduit 133 with the first channel 113.

The needle core 120 is inserted into the main guide tube 110 through the second branch conduit 133, the second channel and the first channel 113 in sequence, and the sharp structure of the needle core 120 passes through the main guide tube 110 to form the puncture end 121. Meanwhile, the core wire 120 is detachably connected to the second branch conduit 133. Specifically, the end of the second branch conduit 133 away from the body 131 is provided with a first connector 135, the end of the stylet 120 away from the sharp structure is provided with a second connector 122, and the first connector 135 and the second connector 122 are detachably connected. Optionally, the first connector 135 is an external screw joint disposed on the tube portion of the second branch conduit 133, and the second connector 122 is an internal screw joint disposed on an end of the stylet 120 away from the sharp structure, the external screw joint and the internal screw joint being screwed to realize detachable connection of the stylet 120 and the second branch conduit 133.

It should be noted that the specific structure of the first connector 135 and the second connector 122 is not limited herein, and it should be understood that in other embodiments, the detachable connection, such as a snap connection, between the stylet 120 and the second branch conduit 133 can be implemented in other manners as required.

The needle core 120 inserted into the first channel 113 of the main guide tube 110 is detachably connected with the main guide tube 110 by arranging the needle core 120 to be detachably connected with the second branch conduit 133. During puncture, the needle core 120 is fixed on the second branch conduit 133 through the screw joint, thereby preventing the needle core 120 from shifting relative to the main guide tube 110 in the puncture process, and the puncture effect is better; after the device 10 to be isolated enters the preset position in the human body under the puncturing action of the puncturing end 121, the needle core 120 can be detached and taken out, and meanwhile, the biopsy needle is sequentially inserted into the main guide tube 110 along the second branch guide tube 133, the second cavity and the first channel 113 and penetrates out from one end of the main guide tube 110 provided with the guide surface 111 to perform biopsy operation, so that secondary puncturing is avoided, and the injury to the human body is reduced.

Further, the isolation instrument 10 further comprises a switch valve 160 connected to the guide rod 100, the switch valve 160 is located at one end of the medium channel 112 far away from the accommodating cavity 211, and the on-off of the medium channel 112 is controlled by the switch valve 160, so that the charging and discharging of the medium in the accommodating cavity 211 are controlled. When the on-off valve 160 is in an open state, the medium passage 112 is unblocked, and a medium enters and exits the accommodating cavity 211 through the medium passage 112, so that the balloon 200 is elastically deformed, thereby changing the volume of the balloon; when the on-off valve 160 is in the closed state, the medium is confined in the balloon 200, and the pressure in the balloon 200 is stable and the volume is unchanged. Specifically, the on-off valve 160 is fixedly connected to an end of the first branch conduit 132 away from the body 131. Optionally, the on-off valve 160 is a stopcock.

Referring to fig. 7, in the present embodiment, a second channel 141 having an opening 142 is further disposed in the guide rod 100, and when the isolation instrument 10 is used to isolate the lesion from the normal organ, that is, the balloon 200 is located between the lesion and the normal organ, the opening 142 is used to communicate the second channel 141 with the gap between the lesion and the normal organ. Therefore, during the use of the isolation device 10, local anesthesia can be performed by injecting anesthetic around the lesion through the second channel 141, local cleaning can be performed by injecting physiological saline, or tissue pus in the gap between the lesion and the normal organ can be sucked through the second channel 141.

Further, a second channel 141 is opened inside the needle core 120, and one end of the second channel 141 has an opening 142 that communicates the second channel 141 with a gap between the lesion and the normal organ. Specifically, the opening 142 opens at the sharp structure of the stylet 120 for forming the piercing end 121. Since the needle core 120 is detachably connected to the main delivery tube 110, when the second channel 141 is clogged due to the excessive thickening of the tissue pus when the suction of the tissue pus is performed through the second channel 141, the needle core 120 can be removed to perform the suction through the first channel 113, and the radial dimension of the first channel 113 is larger than that of the second channel 141, so that the clogging phenomenon can be prevented as much as possible.

Further, the isolation instrument 10 also comprises a protective cap for preventing foreign objects from entering the isolation instrument 10. Specifically, the number of the protection caps is two, the two protection caps are a first protection cap 151 and a second protection cap 152, respectively, the first protection cap 151 is connected to one end of the on-off valve 160 away from the first branch conduit 132 to prevent foreign matters from entering the medium passage 112; a second protective cap 152 is connected to the end of the second connector 122 remote from the hub 120 to prevent foreign matter from entering the second channel 141.

It should be noted that in the present embodiment, the second channel 141 is disposed in the needle core 120, and it should be understood that in other embodiments, the position of the second channel 141 may be set according to the requirement, for example, as shown in fig. 8 and 9, the second channel 141 is disposed in the main delivery tube 110, so that the main delivery tube 110 forms a three-cavity structure, in which case, the needle core 120 is a solid structure. The second channel 141 extends from the end of the main guide pipe 110 connected to the docking head 130 to the end where the guide surface 111 is disposed, and an opening 142 is formed on the guide surface 111, meanwhile, a third channel communicated with the second channel 141 is formed in the body 131 of the docking head 130, the docking head 130 further comprises a third branch conduit 134 connected to the body 131, the third branch conduit 134 is communicated with the third channel, and a third protective cap 153 is connected to the end of the third branch conduit 134 far away from the body 131.

Referring to fig. 1, in the present embodiment, in order to enhance the development, the outer wall of the main guide pipe 110 is processed by the development process, and meanwhile, the outer wall of the main guide pipe 110 is provided with a scale 114 to precisely control the insertion depth of the isolation device 10. The scale 114 is located between the balloon 200 and the docking head 130 and is disposed adjacent to the balloon 200.

According to the present embodiment, there is provided an isolation instrument 10, wherein the operation principle of the isolation instrument 10 is as follows:

when in use, the needle core 120 is firstly inserted into the main guide tube 110 along the second branch guide tube 133, the second cavity and the first channel 113, and the first connecting piece 135 and the second connecting piece 122 are screwed and fixed; then under the guidance of medical images such as B-ultrasonic and CT, the skin is broken before an operation and the balloon 200 is pushed to the position between the focus and the normal visceral organs by holding the main guide tube 110; at this time, local anesthesia may be performed by injecting an anesthetic into the vicinity of the lesion through a through-channel provided in the needle core 120, local cleaning may be performed by injecting a physiological saline, or tissue pus between the lesion and a normal organ may be sucked out through the through-channel. The medical injector is screwed and fixed on the switch valve 160, the plug valve is opened, medium is injected into the accommodating cavity 211 of the balloon 200, so that the balloon 200 is expanded and the volume is enlarged, after the balloon 200 is filled to successfully isolate the focus from the normal organ, the switch valve 160 is closed to enable the balloon 200 to be in an expanded state, and at the moment, the thermal ablation operation can be carried out.

After the operation is completed, the switch valve 160 is opened to draw out the medium in the balloon 200 by the syringe, the balloon 200 is rebounded to be shriveled and restored to the recovery state, and then the whole isolation instrument 10 is drawn out.

The present embodiment provides an isolation instrument 10 having at least the following advantages:

the embodiment of the invention provides an isolation instrument 10, wherein a balloon 200 is arranged outside a guide rod 100, and the balloon 200 is inflated and deflated through a medium channel 112 arranged in the guide rod 100 to change the volume of the balloon 200, so that the focus and the normal visceral organs are isolated, the problem of damage to the normal visceral organs caused by a large ablation area in the thermal ablation operation process is solved, and meanwhile, after the operation is completed, the balloon 200 is shrunk to be small, convenient to take out and convenient to use. Evenly be provided with a plurality of ribs 212 on sacculus 200's the surface, through set up a plurality of ribs 212 of evenly distributed on sacculus 200 for sacculus 200 is more even everywhere radially when the inflation, and the effect is better. One end of the guide rod 100 is provided with a puncture end 121, and the puncture end 121 can be used for directly puncturing, so that the structure is reasonable, and the use is more convenient. The guide rod 100 is provided with a second channel 141 with an opening 142, and local anesthesia and local cleaning near the lesion are realized through the second channel 141, so that the convenience in use is further improved.

The embodiment also provides a medical device, which comprises the isolation instrument 10, so that the medical device also has the beneficial effects of being capable of effectively protecting the viscera in the thermal ablation operation, improving the problem that the normal viscera are damaged due to a large ablation area in the thermal ablation operation, and being reasonable in structure and convenient to use.

The above description is only for the specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.