Macromolecule supporting piece for thrombus breaker

Abstract

The utility model relates to a macromolecule supporting piece for a thrombus breaker, and the macromolecule supporting piece for the thrombus breaker comprises a macromolecule piece, the macromolecule piece is of a columnar structure, clamping jaw mounting holes are formed in the two axial ends of the macromolecule piece, and the macromolecule piece is suitable for a cutting jaw of the thrombus breaker to penetrate through. More than two clamping jaw grooves are formed in the side wall of the polymer part in the axial direction, the clamping jaw grooves are matched with the cutting jaws, the cutting jaws can be collected in the clamping jaw grooves, annular grooves are formed in the side wall of the polymer part in the circumferential direction, and by using the polymer part of a columnar structure, a mounting position is provided for the clamping jaws of the thrombus breaker; the edge of the high-molecular part is provided with the zigzag groove, so that the overall flexibility and the turning capacity are improved, the high-molecular part can reach a farther and tortuous blood vessel environment, and the problem that the high-molecular part cannot reach farther and more difficult blood vessels is solved.

Description

Technical Field

[0001] The present application relates to the technical field of medical devices, and in particular to a polymer support for a thrombus disruptor. Background Art

[0002] There are various thrombi in human blood vessels due to various reasons, involving the arterial system and the venous system. When drug treatment is difficult to eliminate the thrombi, medical devices are needed to break up and remove the thrombi. At present, a hollow catheter is often used to extend into the thrombus formation site in the blood vessel, and then a suction device is used to absorb the thrombus into the catheter and output it out of the human body. However, since some thrombi take a long time to form and the thrombus is relatively hard, it is difficult for the thrombus suction catheter to suck the thrombus out of the human body. For such harder thrombi, a bowl-shaped thrombus removal guide wire is used to cut the thrombus. In the existing technology, the cutting part often bends, deforms, and other problems when passing through the thrombus, making it impossible for the guide wire to reach the ideal position. The guide wire tip deviates and causes damage to the blood vessel wall. Utility Model Content

[0003] In view of this, the present application proposes a polymer support for a thrombus disruptor, which provides better flexibility and facilitates the passage of thrombi.

[0004] According to one aspect of the present application, there is provided a polymer support member for a thrombus disruptor, comprising: a polymer member;

[0005] The polymer part is a columnar structure, with claw mounting holes at both axial ends, suitable for passing the cutting claws of the thrombus disruptor, and the side wall of the polymer part is provided with two or more claw grooves along the axial direction, the claw mounting grooves match the cutting claws, and the cutting claws can be retracted inside the claw grooves;

[0006] A groove is formed on the side wall of the polymer part along the circumferential direction, and the groove is annular.

[0007] In a possible implementation, there are multiple claw grooves, which are spaced apart along the axial direction of the polymer component.

[0008] In a possible implementation, the depth of the claw groove is greater than the depth of the groove.

[0009] In a possible implementation, any two adjacent grooves are spaced at equal angles along the circumference of the polymer component.

[0010] In a possible implementation, the direction in which the claw groove is opened is perpendicular to the direction in which the groove is opened; and

[0011] The claw groove is divided into a plurality of grooves, and the plurality of grooves are sawtooth-shaped.

[0012] In a possible implementation, both ends of the polymer part are tapered.

[0013] In a possible implementation, the polymer component includes a first polymer component and a second polymer component;

[0014] The first polymer part is a columnar structure, with claw mounting holes formed at both axial ends, suitable for inserting the cutting claw of the thrombus disruptor. The side wall of the polymer part is provided with two or more first claw grooves along the axial direction, the first claw mounting grooves match the cutting claws, and the cutting claws can be retracted inside the first claw grooves. The side wall of the first polymer part is provided with a first groove along the circumferential direction, and the first groove is annular.

[0015] The second polymer part is a columnar structure, with claw mounting holes formed at both axial ends, suitable for passing the cutting claw of the thrombus breaker, and the side wall of the polymer part is provided with two or more second claw grooves along the axial direction, the second claw mounting grooves match the cutting claws, and the cutting claws can be retracted inside the second claw grooves, and the side wall of the second polymer part is provided with a second groove along the circumferential direction, and the second groove is annular;

[0016] One axial end of the first polymer part is detachably connected to one circumferential end of the second polymer part. The opening direction of the first claw groove is parallel to the opening direction of the second claw groove and does not overlap.

[0017] In a possible implementation, one end of the first polymer component away from the second polymer component has a tapered structure;

[0018] One end of the second polymer component away from the first polymer component has a tapered structure.

[0019] In one possible implementation, the polymer part is a hollow structure with openings at both ends.

[0020] In one possible implementation, the length of the polymer part is greater than the length of the claw in the compressed state.

[0021] The polymer support member for the thrombus breaker of the embodiment of the present application has the following beneficial effects: by using a columnar polymer member, a mounting position is provided for the thrombus breaker's claws, allowing them to pass through the thrombus more easily. Specifically, the polymer molded member increases overall toughness, resolving the problem of a guidewire being unable to pass through the thrombus along the optimal path due to its low rigidity. Furthermore, the polymer member has tapered ends, providing less resistance to harder thrombi, resolving the problem of a guidewire being unable to pass through harder thrombi. The polymer member has serrated grooves on its edges, increasing its overall flexibility and bending capability, enabling it to reach more distant and tortuous vascular environments, resolving the problem of being unable to reach more distant and difficult vessels. The polymer molded member is provided with long vertical grooves, within which metal alloy cutting claws are distributed. Driven by the delivery core wire, the polymer molded member and the metal alloy cutting claws move back and forth to cut the thrombus in all directions, resolving the problem of being unable to cut thrombi in some tricky locations.

[0022] Other features and aspects of the present application will become apparent from the following detailed description of exemplary embodiments with reference to the attached drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate exemplary embodiments, features, and aspects of the application and, together with the description, serve to explain the principles of the application.

[0024] Figure 1 A schematic diagram showing the main structure of an integrated polymer component of a thrombus disruptor according to an embodiment of the present application;

[0025] Figure 2 A partially enlarged schematic diagram showing a thrombus disruptor according to an embodiment of the present application;

[0026] Figure 3 A schematic diagram showing the main structure of a double-group polymer component of a thrombus disruptor according to an embodiment of the present application;

[0027] Figure 4 A schematic diagram showing the deployment of the cutting claws of the thrombus disruptor according to an embodiment of the present application is shown;

[0028] Figure 5 A schematic diagram showing the main structure of the thrombus breaker embodiment of the present application. DETAILED DESCRIPTION

[0029] Various exemplary embodiments, features, and aspects of the present application will be described in detail below with reference to the accompanying drawings. The same reference numerals in the accompanying drawings represent elements with the same or similar functions. Although various aspects of the embodiments are shown in the accompanying drawings, the drawings are not necessarily drawn to scale unless otherwise indicated.

[0030] Among them, it needs to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention or simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0031] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of this utility model, "plurality" means two or more, unless otherwise specifically defined.

[0032] The word “exemplary” is used exclusively herein to mean “serving as an example, example, or illustration.” Any embodiment described herein as “exemplary” is not necessarily to be construed as preferred or advantageous over other embodiments.

[0033] In addition, numerous specific details are provided in the detailed description below to better illustrate the present application. Those skilled in the art will appreciate that the present application can be practiced without certain specific details. In some instances, methods, means, components, and circuits well known to those skilled in the art are not described in detail in order to highlight the main purpose of the present application.

[0034] like Figure 1 and Figure 2 As shown, the polymer support part for the thrombus breaker in the embodiment of the present application includes: a polymer part 1, which is a columnar structure with claw mounting holes at both axial ends, suitable for passing through the cutting claw 2 of the thrombus breaker, and the side wall of the polymer part 1 has more than two claw grooves 14 along the axial direction, the claw mounting groove 13 matches the cutting claw 2, and the cutting claw 2 can be retracted inside the claw groove 14, and the side wall of the polymer part 1 has a groove 13 along the circumferential direction, and the groove 13 is annular.

[0035] In this embodiment, by using a polymer part 1 with a columnar structure, a mounting position is provided for the claws of the thrombus breaker, and it can pass through the thrombus 9 relatively easily. Specifically, the polymer molded part increases the overall toughness, solving the problem that the guidewire cannot pass through the thrombus 9 from the optimal path due to its low rigidity. The two ends of the polymer part 1 are tapered structures, which have less resistance when passing through the harder thrombus 9, solving the problem that the guidewire cannot pass through the harder thrombus 9. The edge of the polymer part 1 is provided with a serrated groove 13, which increases the overall flexibility and bending ability, and can reach farther and more tortuous blood vessel environments, solving the problem of being unable to reach farther and more difficult blood vessels. Long vertical grooves 13 are provided on the polymer molded part, and metal alloy cutting claws 2 are distributed and installed in the grooves 13. Driven by the delivery core wire, the polymer molded part and the metal alloy cutting claws 2 move back and forth to cut the thrombus 9 in all directions, solving the problem that some tricky positions cannot cut the thrombus 9.

[0036] In a specific embodiment, there are multiple claw grooves 14, which are arranged at axial intervals along the polymer part 1. The claw grooves 14 are opened to retract the compressed claws and provide a position for the compressed claws. Metal alloy cutting claws 2 are distributed and installed in the claw grooves 14. The rotation angle arrangement of multiple polymer material molded parts can make the metal alloy claws arranged in a circle. Driven by the conveying core wire, the polymer molded parts and the metal alloy cutting claws 2 move back and forth to cut the thrombus 9 in all directions, solving the problem that the thrombus 9 cannot be cut in some tricky positions.

[0037] In a specific embodiment, the depth of the claw groove 14 is greater than the depth of the groove 13, so that the multiple grooves 13 on the side wall of the polymer part 1 have a serrated structure. The opening of multiple grooves 13 increases the overall toughness, solves the problem that the polymer part 1 has low rigidity and the guide wire cannot pass through the thrombus 9 from the optimal path, reduces the difficulty of the operation, and improves the efficiency of the operation.

[0038] Furthermore, in this embodiment, the plurality of grooves 13 are arranged at equal intervals along the axial direction of the polymer component 1 to ensure that the axial flexibility of the polymer component 1 is the same.

[0039] In a specific embodiment, any two adjacent grooves 13 are spaced at equal angles along the circumferential direction of the polymer component 1 , ensuring that the polymer component 1 has the same flexibility in the circumferential direction.

[0040] In a specific embodiment, the opening direction of the claw groove 14 is perpendicular to the opening direction of the groove 13, and the claw groove 14 separates multiple grooves 13, and the multiple grooves 13 are serrated. The claw groove 14 cooperates with the groove 13 so that the outer side wall of the polymer part 1 has a serrated structure, thereby improving the overall flexibility and bending ability of the polymer part 1, and can reach farther and more tortuous blood vessel environments, solving the problem of being unable to reach farther and more difficult blood vessels.

[0041] Furthermore, in this embodiment, the multiple serrated grooves 13 increase the power transmission efficiency when the cutting claws 2 are deployed, making the thrombus 9 more efficiently broken, and also enhance the surface friction of the polymer component 1, which helps to maintain a stable position in a complex vascular environment.

[0042] In a specific embodiment, both ends of the polymer part 1 are tapered, which creates less resistance when passing through a harder thrombus 9 , thereby solving the problem that a guidewire or the like cannot pass through a harder thrombus 9 .

[0043] In one embodiment, see Figure 3 The polymer part 1 includes a first polymer part 11 and a second polymer part 12. The first polymer part 11 is a columnar structure with claw mounting holes at both ends in the axial direction, which is suitable for passing through the cutting claw 2 of the thrombus breaker. The side wall of the polymer part 1 is provided with more than two first claw grooves 14 along the axial direction. The first claw groove 13 matches the cutting claw 2. The cutting claw 2 can be retracted inside the first claw groove 14. The side wall of the first polymer part 11 is provided with a first groove 13 along the circumferential direction. The first groove 13 is annular. The second polymer part 12 is a columnar structure with claw mounting holes at both ends in the axial direction, which is suitable for passing through the blood vessel. The cutting claw 2 of the bolt breaker, the side wall of the polymer part 1 has more than two second claw grooves 14 axially opened, the second claw groove 13 matches the cutting claw 2, the cutting claw 2 can be retracted inside the second claw groove 14, and the side wall of the second polymer part 12 has a second groove 13 circumferentially opened, the second groove 13 is annular, and the axial end of the first polymer part 11 is detachably connected to the circumferential end of the second polymer part 12, the opening direction of the first claw groove 14 is parallel to and does not overlap with the opening direction of the second claw groove 14, and the two each have independent claw grooves 14 and circumferential grooves 13.

[0044] In this embodiment, a claw can be placed on each of the first polymer member 11 and the second polymer member 12, so that the detachably connected first polymer member 11 and the second polymer member 12 are connected to form a columnar structure. In this way, the columnar polymer member 1 having the first polymer member 11 and the second polymer member 12 can be equipped with two claws, further improving the thrombus 9 cutting ability of the thrombus disruptor.

[0045] Furthermore, the grooves 13 of the first polymer component 11 and the second polymer component 12 do not overlap in the axial direction, so that the cross-section or coverage area of ​​the two claws in the axial direction of the polymer component 1 is larger, further improving the cutting effect of the thrombus breaker.

[0046] Furthermore, a first connecting portion 111 is provided at one axial end of the first polymer component 11, and a second connecting portion 121 is provided at one axial end of the second polymer component 12. The first connecting portion 111 and the second connecting portion 121 are bolt structures and are assembled through a rotating detachable connection.

[0047] In one embodiment, the end of the first polymer member 11 away from the second polymer member 12 has a tapered structure, and the end of the second polymer member 12 away from the first polymer member 11 has a tapered structure. Similar to a single, integrally formed polymer member 1, both ends have tapered structures, which reduces resistance to passing through a harder thrombus 9.

[0048] In one embodiment, polymer component 1 is a hollow structure with openings at both ends. This hollow structure allows the delivery core wire to pass through, thereby controlling whether the cutting claws 2 are deployed or compressed. This hollow structure reduces overall weight, reduces fatigue during surgery, and improves material utilization and economic benefits. Furthermore, the hollow structure gives polymer component 1 greater flexibility and adaptability, allowing it to better adapt to blood vessels of varying shapes and sizes.

[0049] In one embodiment, see Figure 4 and Figure 5 The length of the polymer part 1 is greater than the length of the claw in the compressed state. The compressible metal alloy claw is first laser cut longitudinally by a metal tube, and then heat-treated to be shaped into a lantern shape as shown in the figure. It can be stretched into a straight strip in the compressed state. The proximal angle of the claw is relatively gentle, which is more convenient for receiving it in the claw groove 14. The distal angle is larger, so that the area of ​​contact with the thrombus 9 is larger, which is more conducive to cutting the thrombus 9. Among them, the number of metal claw combinations is the same as the number of vertical grooves 13 of the polymer material molding key. The overall number of metal claws is the same as the number of polymer material molding parts combination groups, and a small section of original pipe is left at the proximal and distal ends respectively, which are called proximal claw rings and distal claw rings. The metal claw as a whole is fixed to the delivery core wire by these two claw rings.

[0050] In a specific embodiment, the thrombus breaker is delivered to the location of the thrombus 9 by using a catheter, and the thrombus breaker comes out of the catheter and passes through the thrombus 9 to break it.

[0051] In a specific embodiment, a distal development soft section 5 may be provided at the distal end of the polymer member 1 .

[0052] The embodiments of the present application have been described above. The above description is illustrative and not exhaustive, and is not limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is selected to best explain the principles of the embodiments, their practical applications, or improvements to the technology in the market, or to enable other persons skilled in the art to understand the embodiments disclosed herein.

Claims

1. A polymer support for a thrombus disruptor, characterized in that: include: polymer parts; The polymer part is a columnar structure, with claw mounting holes formed at both axial ends, the claw mounting holes being suitable for passing the cutting claws of the thrombus disruptor, and the side wall of the polymer part being provided with two or more claw grooves along the axial direction, the claw mounting grooves being matched with the cutting claws, and the cutting claws being able to be retracted inside the claw grooves; and A groove is formed on the side wall of the polymer part along the circumferential direction, and the groove is annular.

2. The polymer support for a thrombus disruptor according to claim 1, characterized in that: The opening depth of the claw groove is greater than the opening depth of the groove.

3. The polymer support for the thrombus disruptor according to claim 2, characterized in that: There are a plurality of claw grooves, which are arranged at intervals along the axial direction of the polymer component.

4. The polymer support for a thrombus disruptor according to claim 1, characterized in that: The spacing angles between any two adjacent grooves along the circumferential direction of the polymer component are equal.

5. The polymer support for a thrombus disruptor according to any one of claims 1 to 4, characterized in that: The opening direction of the claw groove is perpendicular to the opening direction of the groove; and The claw groove is divided into a plurality of grooves, and the plurality of grooves are sawtooth-shaped.

6. The polymer support for the thrombus disruptor according to claim 5, characterized in that: Both ends of the polymer part are in a tapered structure.

7. The polymer support for the thrombus disruptor according to claim 5, characterized in that: The polymer component includes a first polymer component and a second polymer component; The first polymer part is a columnar structure, with claw mounting holes formed at both axial ends, suitable for inserting the cutting claws of the thrombus disruptor. The side wall of the polymer part is provided with two or more first claw grooves along the axial direction, the first claw grooves matching the cutting claws, and the cutting claws can be retracted inside the first claw grooves. The side wall of the first polymer part is provided with a first groove along the circumferential direction, and the first groove is annular. The second polymer part is a columnar structure, with claw mounting holes formed at both axial ends, suitable for passing the cutting claw of the thrombus breaker, and the side wall of the polymer part is provided with two or more second claw grooves along the axial direction, the second claw grooves match the cutting claws, and the cutting claws can be retracted inside the second claw grooves, and the side wall of the second polymer part is provided with a second groove along the circumferential direction, and the second groove is annular; One axial end of the first polymer part is detachably connected to one circumferential end of the second polymer part. The opening direction of the first claw groove is parallel to the opening direction of the second claw groove and does not overlap.

8. The polymer support for the thrombus disruptor according to claim 7, characterized in that: One end of the first polymer component away from the second polymer component is in a tapered structure; One end of the second polymer component away from the first polymer component has a tapered structure.

9. The polymer support for a thrombus disruptor according to claim 1, characterized in that: The polymer part is a hollow structure with openings at both ends.

10. The polymer support for a thrombus disruptor according to claim 1, characterized in that: The length of the polymer part is greater than the length of the clamping claw in a compressed state.

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