阅读说明：本技术 一种血栓拦截器 (Thrombus interceptor ) 是由 郑陈鹏 于 2021-09-24 设计创作，主要内容包括：本发明涉及医疗器械技术领域,具体公开了一种血栓拦截器,包括支撑囊和连通管,支撑囊上设有放置孔和多个流通孔,流通孔的孔径小于血栓的最小截面,流通孔用于血液流过,放置孔用于容纳导管,支撑囊能够在鼓起后与血管内壁相抵；连接管与支撑囊连通,连接管能够外接机器以使得支撑囊鼓起或收瘪,支撑囊内能够充入造影剂。本方案通过将溶栓导管与拦截器的配合使用,能够借助超声技术实现溶栓功能、取栓功能和血栓拦截功能的集成化,既解决了现有技术中采用金属滤网实现对血栓的拦截存在的问题又使得即便是在野外等医疗条件简陋的现场也能对血栓患者进行及时救治。(The invention relates to the technical field of medical instruments, and particularly discloses a thrombus interceptor which comprises a supporting bag and a communicating pipe, wherein the supporting bag is provided with a placing hole and a plurality of circulating holes, the aperture of each circulating hole is smaller than the minimum section of thrombus, the circulating holes are used for blood to flow through, the placing hole is used for accommodating a catheter, and the supporting bag can be abutted against the inner wall of a blood vessel after being expanded; the connecting pipe is communicated with the supporting bag, the connecting pipe can be externally connected with a machine to enable the supporting bag to be inflated or deflated, and contrast media can be filled into the supporting bag. This scheme is through the cooperation use with thrombolysis pipe and interceptor, can realize thrombolysis function, get integrating of thrombus function and thrombus interception function with the help of ultrasonic technology, has both solved the problem that adopts metal filter screen to realize the interception existence to the thrombus among the prior art and has made even if also can in time rescue the thrombus patient in the field of medical conditions such as field simples.)

1. A thrombus interceptor, comprising: the thrombus-removing support comprises a support bag and a communicating pipe, wherein the support bag is provided with a placing hole and a plurality of circulating holes, the aperture of each circulating hole is smaller than the minimum cross section of thrombus, the circulating holes are used for blood to flow through, the placing hole is used for accommodating a catheter, and the support bag can be abutted against the inner wall of a blood vessel after being expanded; the connecting pipe is communicated with the supporting bag, the connecting pipe can be externally connected with a machine to enable the supporting bag to be inflated or deflated, and contrast media can be filled into the supporting bag.

2. The thrombus interceptor of claim 1, wherein: the communicating pipe is a double-layer pipe, a hollow channel and an annular channel are arranged on the communicating pipe, the hollow channel is sleeved by the annular channel, the hollow channel is communicated with the placing hole, and the annular channel is communicated with the inner cavity of the supporting bag.

3. The thrombus interceptor of claim 2, wherein: the one end of keeping away from the support bag of communicating pipe sets up auxiliary tube, and auxiliary tube and annular channel intercommunication, auxiliary tube are used for external machine that makes the support bag swell or shrink flat.

4. The thrombus interceptor of claim 1, wherein: be equipped with the splice bar in the support bag, the splice bar is the heliciform, and the splice bar extends to the support bag outer wall from the support bag center gradually.

5. The thrombus interceptor of claim 4, wherein: the spiral connecting ribs extend from the center of the supporting bag to the outer wall of the supporting bag in a vortex line mode.

6. The thrombus interceptor of claim 4, wherein: the quantity of splice bar has many, many splice bars along support bag center circumference equipartition.

7. The thrombus interceptor of claim 4, wherein: the end surface of the supporting bag, which is far away from one end of the connecting pipe, is an outward convex curved surface or a conical surface.

8. The thrombus interceptor of claim 4 or 7, wherein: the one end that the connecting pipe was kept away from to the support bag is equipped with the arch, is connected with supplementary net between the outer wall of arch and support bag.

9. The thrombus interceptor of claim 8, wherein: the auxiliary net comprises a plurality of auxiliary wires, one end of each auxiliary wire is connected with the corresponding protrusion, the other end of each auxiliary wire is connected with the outer wall of the supporting bag, and the plurality of auxiliary wires are evenly distributed along the circumferential direction of the supporting bag.

10. The thrombus interceptor of claim 4, wherein: the outer wall of the supporting bag is provided with a plurality of creases which are convenient for rolling the supporting bag.

Technical Field

The invention relates to the technical field of medical instruments, in particular to a thrombus interceptor.

Background

In the existing medicine, there are many cases where thrombus occurs in blood vessels, there are arterial thrombus and venous thrombus, for the common limb arteriovenous thrombosis, the radiation intervention guidance mode is generally adopted clinically because the operation of removing the thrombosis has larger trauma to the patient and more postoperative complications, for the vein, either the way of suction thrombus or the way of putting tube for dissolving thrombus can be adopted, whether the way of suction thrombus or dissolving thrombus is the way of putting tube for dissolving thrombus, the catheter is used for sucking thrombus or the catheter is used for injecting medicament for dissolving thrombus, however, whether the way of dissolving thrombus or removing thrombus, in this process, there is a probability that the thrombus falls off from the blood vessel wall and moves to the proximal end along with the blood circulation, and the blood vessel is completely blocked along with the increase of the amount of the thrombus blockage, so that the blood circulation is completely blocked, and the life safety is greatly threatened.

Among the prior art, for avoiding dissolving the thrombus or getting the thrombus among the thrombus and drop and block up the blood vessel, generally adopt the mode of implanting metal filter screen in the blood vessel, even if guarantee that the thrombus of dissolving the thrombus position drops from the vascular wall and also can be blockked by metal filter screen, make things convenient for follow-up pipe that utilizes to continue to dissolve the thrombus that the metal filter screen intercepted or get the thrombus. However, a radioactive intervention method is required in the process of implanting the metal filter screen into the blood vessel, and when the method is used, an iodine oil contrast agent needs to be injected intravenously to facilitate radiography, however, on one hand, part of patients are allergic to the contrast agent, on the other hand, the method needs to use special large equipment to match with the contrast agent, and radiation exists in the using process, so that the implementation of the method is limited, and the difficulty of thrombus treatment is increased; after the metal filter screen is installed on the blood vessel, the metal filter screen can be displaced due to the impact of blood, in addition, the outer contour edge of the metal filter screen is abutted against the blood vessel wall, so that the outer contour is forced to abut against the blood vessel wall tightly for reducing the displacement probability or displacement degree of the metal filter screen, but the probability that the metal filter screen penetrates through the blood vessel is increased by the mode.

Disclosure of Invention

The invention aims to provide a thrombus interceptor to solve the problem of intercepting thrombus by adopting a metal filter screen in the prior art.

In order to achieve the above object, the basic scheme of the invention is as follows:

a thrombus interceptor comprises a supporting bag and a communicating pipe, wherein the supporting bag is provided with a placing hole and a plurality of circulating holes, the aperture of each circulating hole is smaller than the minimum section of thrombus, the circulating holes are used for blood to flow through, the placing hole is used for accommodating a catheter, and the supporting bag can be abutted against the inner wall of a blood vessel after being expanded; the connecting pipe is communicated with the supporting bag, the connecting pipe can be externally connected with a machine to enable the supporting bag to be inflated or deflated, and contrast media can be filled into the supporting bag.

Compare the beneficial effect in prior art:

when the scheme is adopted, when thrombus needs to be intercepted, by means of the guide wire and the target tube used in the puncture catheterization, after the guide wire and the target tube extend into a blood vessel, the shriveled supporting bag is accommodated in the target tube and sleeved on the guide wire, at the moment, the guide wire is sleeved in the placing hole of the supporting bag in a penetrating way, the supporting bag moves along the guide wire until the supporting bag moves to a target position, then the target tube is drawn out, the supporting bag is placed in the blood vessel, then a machine externally connected with the connecting tube is started, so that the supporting bag can be injected with the contrast medium and can be swelled, the outer wall of the swelled supporting bag is abutted against the inner wall of the blood vessel to form fixed positioning of the supporting bag in the blood vessel, meanwhile, the supporting bag is connected with the communicating tube, one end of the communicating tube is exposed outside the body of a patient, and the other end of the communicating tube is positioned in the blood vessel, so that the movement of the supporting bag connected with the connecting tube in the blood vessel becomes abnormally difficult, thereby ensuring that the supporting bag can not move in the blood vessel, the problem that the metal filter screen moves in the blood vessel in the prior art is avoided.

When the scheme is adopted, after the outer wall of the supporting bag is tightly abutted against the inner wall of the blood vessel, the circulation hole on the supporting bag is also unfolded, and whether the circulation hole and the placing hole are completely unfolded or not is determined by the combination of ultrasound and contrast medium through the use of the conventional ultrasonic equipment, so that the circulation of the circulation hole of the supporting bag to the blood is ensured, and the thrombus can be intercepted and blocked; when thrombolysis or thrombolysis is required to be realized, the completely unfolded placing hole can facilitate the placement of the catheter and the catheter to perform thrombolysis or thrombolysis on the thrombus intercepted by the supporting bag; therefore, the scheme realizes thrombolysis, integration of thrombus extraction and thrombus interception, the application scene is wider, especially, when the vein thrombus is implanted into the metal filter screen under the guidance of radiation intervention in places with crude medical conditions such as the field, the emergency site, the large-scale disaster site and the like, the blocker can be used for integrated treatment by combining with a thrombolysis catheter, and the size of the catheter used in puncture catheterization or an ultrasonic instrument used in cooperation is smaller, and the portable medical venous thrombus extraction device is also convenient to carry, so that the thrombus patient can be conveniently and timely treated on the sites with crude medical conditions such as the field.

In addition, when the scheme is adopted, the swelling degree of the supporting bag can be controlled, the supporting bag is softer in structure relative to the metal filter screen, and the contact area between the supporting bag and the inner wall of the blood vessel is larger, so that the supporting bag has larger friction with the inner wall of the blood vessel and is not easy to move in the blood vessel, and meanwhile, the supporting bag has smaller compression on the inner wall of the blood vessel, and further, compared with the metal filter screen, the probability that the supporting bag breaks the blood vessel can be greatly reduced; in addition, when the scheme is adopted, the whole process, namely the implantation process of the interceptor or the monitoring process after the implantation is finished, is operated under the ultrasonic vision, the safety of the radiography is ensured by utilizing the ultrasonic, the contrast agent is not required to be injected into blood vessels in the whole process, the problem of allergy of a patient caused by the contrast agent is avoided, and the applicability of the interceptor is improved.

Further, communicating pipe is the double-deck pipe, is equipped with cavity passageway and annular channel communicating pipe, and the annular channel cup joints the cavity passageway, cavity passageway with place the hole intercommunication, annular channel and the inside cavity intercommunication of support bag.

Has the advantages that: the communicating pipe is arranged, so that the structure of the whole device is simpler, and the device can be combined with the existing puncture catheterization more easily.

Further, the one end of keeping away from the support bag of communicating pipe sets up auxiliary tube, and auxiliary tube and annular channel intercommunication, auxiliary tube are used for external machine that makes the support bag swell or shrink flat.

Has the advantages that: this scheme can simplify the structure of this interceptor and make the connecting pipe conveniently bulge or receive shrivelled through the machine.

Further, be equipped with the splice bar in the support bag, the splice bar is the heliciform, and the splice bar extends to the support bag outer wall from the support bag center gradually.

Has the advantages that: the spiral connecting ribs facilitate the support sac to keep a rolling state before being placed into a blood vessel.

Furthermore, the number of the connecting ribs is one, and the spiral connecting ribs extend from the center of the supporting bag to the outer wall of the supporting bag in a vortex line mode.

Has the advantages that: the structure ensures that the connecting rib can complete the rolling of the convenient supporting bag only by one, and improves the rolling rapidity of the supporting bag.

Furthermore, the number of the connecting ribs is multiple, and the connecting ribs are uniformly distributed along the central circumference of the supporting bag.

Has the advantages that: when this scheme of adoption, the setting of many heliciform splice bars has made things convenient for the rolling of support bag on the one hand, and on the other hand has also strengthened the support intensity of gasbag to the blood vessel.

Furthermore, the end surface of the supporting bag, which is far away from one end of the connecting pipe, is an outward convex curved surface or a conical surface.

Has the advantages that: when the supporting bag is used, one end of the supporting bag, which is far away from the connecting pipe, firstly extends into a blood vessel, and the end surface of the supporting bag is an outer curved surface or a conical surface, so that the friction of the supporting bag in the process of inserting into the blood vessel (or inserting into a target tube) can be reduced; in addition, the outer curved surface or the conical surface of the supporting bag plays a role in guiding the intercepted thrombus, the intercepted thrombus can move towards the edge of the supporting bag close to the wall of the blood vessel, and the speed of blocking all the flow holes in the supporting bag by the thrombus is reduced.

Furthermore, the end of the supporting bag, which is far away from the connecting pipe, is provided with a bulge, and an auxiliary net is connected between the bulge and the outer wall of the supporting bag.

Has the advantages that: when the scheme is adopted, the auxiliary net is arranged, so that thrombus firstly contacts the auxiliary net and is firstly intercepted by the auxiliary net, and the thrombus is intercepted once; thrombus which can not be intercepted by the auxiliary net can be intercepted by the supporting bag for the second time, and the probability that the thrombus is blocked by all the circulation holes of the supporting bag is greatly reduced through the primary interception and the secondary interception

Further, supplementary net includes the supplementary silk of a plurality of, and supplementary silk one end is connected protrudingly, and the supplementary silk other end is connected and is supported the bag outer wall, and the supplementary silk of a plurality of is along supporting bag circumference equipartition.

Has the advantages that: through the setting of supplementary silk, realize the interception to the thrombus on the one hand, on the other hand also makes things convenient for supplementary net to realize the rolling along with supporting the bag together.

Furthermore, a plurality of creases which are convenient for rolling the supporting bag are arranged on the outer wall of the supporting bag.

Drawings

FIG. 1 is a cross-sectional view of a first embodiment of the present invention;

FIG. 2 is a schematic longitudinal sectional view of a first embodiment of the present invention;

FIG. 3 is a cross-sectional view of a second embodiment of the present invention with 5 connecting ribs and the support cells fully deployed;

FIG. 4 is a cross-sectional view of a second embodiment of the present invention with 5 connecting ribs and the supporting bag not fully deployed;

FIG. 5 is a cross-sectional view of a second embodiment of the present invention with 1 connecting rib and the support bag fully deployed;

FIG. 6 is a longitudinal sectional view of a third embodiment of the present invention;

FIG. 7 is a longitudinal sectional view of a fourth embodiment of the present invention;

fig. 8 is a left side view of the support cell and auxiliary net of fig. 7.

Detailed Description

The following is further detailed by way of specific embodiments:

reference numerals in the drawings of the specification include: the support bag comprises a support bag 1, a communication pipe 2, a placing hole 3, a circulation hole 4, a hollow channel 5, an annular channel 6, an auxiliary pipe 7, a connecting rib 8, an auxiliary wire 9, a protrusion 10 and a conduit 100.

Example one

An embodiment substantially as shown in figures 1 and 2 of the accompanying drawings: a thrombus interceptor comprises a supporting bag 1 and a communicating pipe 2 fixedly connected to the right side of the supporting bag 1, wherein a placing hole 3 and a plurality of circulation holes 4 are integrally formed on the supporting bag 1, the outer contour of the cross section of the supporting bag 1 is circular, the placing hole 3 is positioned in the center of the supporting bag 1, and the circulation holes 4 are arranged in the circumferential direction of the placing hole 3; the aperture of the flow hole 4 is smaller than the minimum section of the thrombus, the flow hole 4 is used for blood to flow through, the placing hole 3 is used for accommodating the catheter 100 or the guide wire, and the support bag 1 can be abutted against the inner wall of the blood vessel after being expanded; the connecting pipe is communicated with the supporting bag 1, the connecting pipe can be externally connected with a machine so that the supporting bag 1 can be inflated or deflated, the supporting bag 1 can be filled with contrast media, and the contrast media used in the embodiment are ultrasonic contrast media.

Communicating pipe 2 is the double-layer tube, and integrated into one piece has cavity passageway 5 and annular channel 6 on communicating pipe 2, and annular channel 6 cup joints cavity passageway 5, cavity passageway 5 with place hole 3 intercommunication, annular channel 6 and the inside cavity intercommunication of support bag 1. The right end of the communicating pipe 2 is integrally formed with an auxiliary pipe 7, the auxiliary pipe 7 is communicated with the annular channel 6, and the auxiliary pipe 7 is used for externally connecting a machine for enabling the support bag 1 to swell or shrink.

The specific implementation process is as follows:

when the embodiment is adopted, when thrombus needs to be intercepted, by means of a guide wire and a target tube used in a puncture catheterization method, after the guide wire and the target tube extend into a blood vessel, a deflated support bag 1 is accommodated in the target tube and the support bag 1 is sleeved on the guide wire, at the moment, the guide wire is sleeved in a placing hole 3 of the support bag 1 in a penetrating manner, the support bag 1 moves along the guide wire until the support bag moves to a target position, then the target tube is drawn out, the support bag 1 is placed in the blood vessel, then a machine externally connected with an auxiliary tube 7 is started, so that a contrast medium enters the support bag 1 through a circular channel 6 of a communication tube 2 and forces the support bag 1 to bulge, the outer wall of the bulged support bag 1 is abutted against the inner wall of the blood vessel to form fixed positioning of the support bag 1 in the blood vessel, meanwhile, the communication tube 2 is connected to the support bag 1, one end of the communication tube 2 is exposed out of a patient, the other end of the support bag is positioned in the blood vessel, and the movement of the support bag 1 connected with the connection tube in the blood vessel becomes extremely difficult, thereby ensuring that the support cell 1 does not move within the blood vessel.

When the embodiment is adopted, after the outer wall of the supporting bag 1 is tightly abutted against the inner wall of the blood vessel, the circulation hole 4 on the supporting bag 1 is also unfolded, and the combination of ultrasound and a contrast agent is used for determining whether the circulation hole 4 and the placing hole 3 are completely unfolded or not through the use of the existing ultrasonic equipment, so that the circulation of the blood and the interception and obstruction of thrombus through the circulation hole 4 of the supporting bag 1 are confirmed; when thrombolysis or thrombolysis needs to be realized, the completely unfolded placing hole 3 can facilitate the placing of the catheter 100, and the catheter 100 can conveniently perform thrombolysis or thrombolysis on the thrombus intercepted by the supporting bag 1; therefore, the scheme realizes the integration of thrombolysis, thrombus extraction and thrombus interception, the application scene is wider, especially when the vein thrombus is implanted into the metal filter screen under the guidance of radiation intervention in places with crude medical conditions such as the field, the first-aid site and the large-scale disaster site, the integrated treatment can be carried out by combining the thrombolysis catheter 100 through the interceptor, and the catheter 100 used in puncture catheterization or the ultrasonic instrument used in cooperation is smaller in volume and is also convenient to carry, so that the scheme can also be convenient for timely treating the thrombus patients in the fields with crude medical conditions such as the field.

In addition, when the embodiment is adopted, the swelling degree of the supporting bag 1 can be controlled, and the supporting bag 1 has a softer structure relative to the metal filter screen and has a larger contact area with the inner wall of the blood vessel, so that the supporting bag 1 has larger friction with the inner wall of the blood vessel and is not easy to move in the blood vessel, and meanwhile, the supporting bag 1 has smaller compression on the inner wall of the blood vessel, and further, compared with the metal filter screen, the probability that the supporting bag 1 breaks the blood vessel can be greatly reduced; in addition, when the interceptor is implanted in the embodiment, the whole process, namely the process of implanting the interceptor or and the monitoring process after the completion of the implantation, is operated under the ultrasonic vision, the safety of the angiography realized by utilizing the ultrasonic is ensured, the contrast agent is not required to be injected into blood vessels in the whole process, the problem of allergy of a patient caused by the angiography is avoided, and the applicability of the interceptor is improved.

Adopt this embodiment to carry out the thrombolysis or when getting the embolus, put into pipe 100 through placing hole 3, recycle pipe 100 and realize the thrombolysis or get the embolus, the length that pipe 100 inserted in the patient is not injectd by support bag 1 length and position, make support bag 1 only need put into the patient near the heart end can, and pipe 100 can insert far away heart end and dissolve the embolus or take out the embolus with the thrombus that produces far away heart end, the length that support bag 1 put into has greatly been shortened, the degree of difficulty of placing of support bag 1 has been reduced.

Example two

The second embodiment is basically as shown in the attached fig. 3 to fig. 5, and the second embodiment is improved on the basis of the first embodiment as follows: a connecting rib 8 is formed in the supporting bag 1, the connecting rib 8 is spiral, and the connecting rib 8 gradually extends from the center of the supporting bag 1 to the outer wall of the supporting bag 1; with reference to fig. 3 and 4, when there are a plurality of connecting ribs 8, the embodiment takes 5 as an example, and the plurality of connecting ribs 8 are uniformly distributed along the central circumference of the support bag 1. Referring to fig. 5, when the number of the tie bars 8 is one, the spiral tie bars 8 extend from the center of the support bag 1 to the outer wall of the support bag 1 in a spiral line manner; a plurality of creases which are convenient for rolling the supporting bag 1 are formed on the outer wall of the supporting bag 1.

The specific implementation process is as follows: when the embodiment is adopted, the spiral connecting ribs 8 are arranged, so that the support bag 1 can be conveniently rolled before being placed into a target tube, and the support bag 1 can be conveniently and gradually unfolded in a blood vessel; in addition, the existence of the connecting ribs 8 also enhances the overall supporting strength of the supporting bag 1.

EXAMPLE III

The third embodiment is basically as shown in fig. 6, and the third embodiment is improved on the basis of the second embodiment as follows: the end surface of the support bag 1 far from the end of the connecting pipe is an outer convex curved surface or a conical surface, and fig. 6 of the embodiment is an example of the outer convex curved surface.

When the embodiment is adopted, one end (namely the left end in the attached drawing 6) of the support bag 1, which is far away from the connecting pipe, firstly extends into the blood vessel, and the end surface is an external curved surface or a conical surface, which is beneficial to reducing the friction of the support bag 1 in the process of inserting into the blood vessel (or inserting into a target tube); in addition, the outer curved surface or the conical surface of the support bag 1 plays a role in guiding the intercepted thrombus, the intercepted thrombus can move towards the edge of the support bag 1 close to the wall of the blood vessel, and the speed of completely blocking the flow holes 4 in the support bag 1 by the thrombus is reduced.

Example four

The fourth embodiment is basically as shown in the attached fig. 7 and fig. 8, and the fourth embodiment is modified on the basis of the third embodiment as follows: the one end that the connecting pipe was kept away from to support bag 1 is equipped with arch 10 (also the left end of fig. 7), is connected with supplementary net between arch 10 and the outer wall of supporting bag 1, and supplementary net includes the supplementary silk 9 of a plurality of, and supplementary silk 9 one end is connected protruding 10, and supplementary silk 9 other end joint support bag 1 outer wall, the supplementary silk 9 of a plurality of along supporting bag 1 circumference equipartition, and supplementary silk 9 can adopt the same material with pipe 100 in this embodiment.

When the embodiment is adopted, the thrombus firstly contacts the auxiliary net and is firstly intercepted by the auxiliary net through the arrangement of the auxiliary net, so that the primary interception of the thrombus is realized; thrombus which cannot be intercepted by the auxiliary net can be intercepted by the supporting bag 1 for the second time, and the probability that the thrombus is completely blocked by the circulation holes 4 of the supporting bag 1 is greatly reduced through the primary interception and the secondary interception.

The foregoing is merely an example of the present invention and common general knowledge of known specific structures and features of the embodiments is not described herein in any greater detail. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several changes and modifications can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent. The scope of the claims of the present application shall be determined by the contents of the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.