Blood vessel thrombus extraction device

Abstract

The utility model discloses a blood vessel embolectomy device which comprises a plug, a supporting piece, an elastic assembly, a first tube body and a driving assembly. One end of the supporting piece is connected with the plug, the elastic assembly is arranged on the plug, the elastic assembly is at least used for providing an elastic force, and the elastic force is used for enabling the other end of the supporting piece to have a trend of moving towards a direction far away from the plug; the other end of the plug is connected with the driving assembly, and the driving assembly is at least used for driving the plug to move relative to the first pipe body. Through the application of the thrombus extraction device, the thrombus extraction device is particularly suitable for thrombus extraction operation of peripheral blood vessels, can adapt to blood vessels with different thicknesses, is convenient to operate, can ensure that thrombus is completely extracted as far as possible, effectively prevents secondary injury to patients, and is lower in production cost.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, in particular to a vascular thrombectomy device. Background Art

[0002] Peripheral blood vessels mainly refer to blood vessels other than cardiovascular blood vessels such as coronary arteries and aorta, and cerebrovascular blood vessels, including trunk blood vessels, visceral blood vessels and limb blood vessels, and also include arteries, veins and capillaries therein. Peripheral blood vessels are widely distributed and numerous, and there is a possibility of various vascular diseases. Among them, a thrombus is a small piece formed on the surface of the exfoliation or repair site of the blood vessel inner surface in the cardiovascular system. In a variable fluid-dependent type, a thrombus is composed of insoluble fibrin, deposited platelets, accumulated white blood cells and trapped red blood cells, etc. When a thrombus occurs, thrombus removal work needs to be carried out in a timely manner.

[0003] At present, the thrombectomy devices adopted in the prior art have relatively complex structures, relatively high costs, poor operation convenience, and at the same time, due to the different thicknesses of blood vessels, it is difficult to ensure the complete removal of thrombus, resulting in possible thrombus residues in the blood vessels. Summary of the Utility Model

[0004] In view of this, to solve the above problems, the purpose of the utility model is to provide a vascular thrombectomy device, including: a plug, a support member, an elastic component, a first tube body and a driving component;

[0005] One end of the support member is connected to the plug, the elastic component is arranged on the plug, and the elastic component is at least used to provide a elastic force, and the elastic force is used to make the other end of the support member have a tendency to move in a direction away from the plug;

[0006] The other end of the plug is connected to the driving component, and the driving component is at least used to drive the movement of the plug relative to the first tube body;

[0007] Wherein, the plug can be movably in a first position or a second position;

[0008] When the plug is in the first position, the plug is accommodated inside one end of the first tube body, the other end of the support member abuts against the inner side of the first tube body, and the other end of the support member is close to the plug;

[0009] When the plug is in the second position, the plug protrudes outside one end of the first tube body, and the other end of the support member is far away from the plug.

[0010] In another preferred embodiment, the elastic component includes: a moving member, an elastic body, a connecting member, and a sliding member. The moving member is slidably disposed on the plug. A cavity is provided on the moving member. The elastic body is disposed in the cavity. One end of the connecting member is connected to the elastic body, and the sliding member is connected to the other end of the connecting member. The sliding member is slidably connected to the support member.

[0011] In another preferred embodiment, the two support members are respectively disposed on two sides of the plug. The two sliding members are respectively slidably disposed on the two support members. One ends of the two connecting members are respectively connected to two ends of the elastic body, and the other ends of the two connecting members are respectively connected to the two sliding members.

[0012] In another preferred embodiment, it further includes: a guide rail. The guide rail is disposed on the plug. The moving member is slidably disposed on the guide rail.

[0013] In another preferred embodiment, a necking member is disposed inside one end of the first tube body. A through hole is formed inside the necking member. When the plug is in the first position, the support member abuts against the inner wall of the through hole.

[0014] In another preferred embodiment, the driving component includes: a second tube body and a pushing member. One end of the second tube body is connected to the other end of the plug. The pushing member is connected to the other end of the second tube body. The second tube body is axially movably disposed inside the first tube body. The pushing member protrudingly disposed outside the other end of the first tube body.

[0015] In another preferred embodiment, it further includes: a connecting rod and a driving member. The connecting rod is axially movably disposed inside the second tube body. One end of the connecting rod is connected to the moving member, and the other end of the connecting rod is connected to the driving member.

[0016] In another preferred embodiment, it further includes: a third tube body and a rotating member. External threads are provided on the outer wall of the first tube body. Internal threads are provided on the inner wall of the third tube body. The internal threads and the external threads are matched. The rotating member is connected to the other end of the first tube body.

[0017] In another preferred embodiment, a sharp portion is formed at one end of the plug.

[0018] In another preferred embodiment, it further includes: a protruding member. The protruding member is disposed outside the plug. The protruding member is disposed near the other end of the support member. The connecting member is movably abutted against the protruding member.

[0019] Due to the adoption of the above technical solution, the positive effects of the present utility model compared with the prior art are as follows:

[0020] By applying the present utility model, a thrombus extraction device is provided, which is particularly suitable for thrombus extraction operations on peripheral blood vessels. It can adapt to blood vessels of different thicknesses, is convenient to operate, can ensure the complete extraction of thrombus as much as possible, effectively prevent secondary injuries to patients, and has a relatively low production cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 FIG. is a schematic diagram of the plug of a blood vessel thrombus extraction device of the present utility model in the first position;

[0022] Figure 2 FIG. is a schematic diagram of the plug of a blood vessel thrombus extraction device of the present utility model in the second position;

[0023] Figure 3 FIG. is a first partial schematic diagram of a blood vessel thrombus extraction device of the present utility model;

[0024] Figure 4 FIG. is a second partial schematic diagram of a blood vessel thrombus extraction device of the present utility model.

[0025] In the drawings:

[0026] 1. Plug; 2. Support member; 3. Elastic component; 4. First tube body; 5. Driving component; 6. Moving member; 7. Elastic body; 8. Connecting member; 9. Sliding member; 10. Cavity; 11. Guide rail; 12. Necking member; 13. Second tube body; 14. Pushing member; 15. Connecting rod; 16. Driving member; 17. Third tube body; 18. Rotating member; 19. Sharp part; 20. Protruding member; 21. Blood vessel; 22. Thrombus. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0027] The technical solution of the present utility model will be clearly and completely described below with reference to the drawings. Obviously, the described embodiments are some but not all of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0028] As Figures 1 to 4As shown, a preferred embodiment of a vascular thrombus removal device is shown, comprising: a plug 1, a support member 2, an elastic component 3, a first tube 4 and a driving component 5; one end of the support member 2 is connected to the plug 1, and the elastic component 3 is arranged on the plug 1, and the elastic component 3 is at least used to provide an elastic force, and the elastic force is used to make the other end of the support member 2 have a tendency to move in a direction away from the plug 1; the other end of the plug 1 is connected to the driving component 5, and the driving component 5 is at least used to drive the plug 1 to move relative to the first tube 4; further, when it is necessary to use the vascular thrombus removal device to remove the thrombus 22 in the blood vessel 21, the distal end of the vascular thrombus removal device is first penetrated through the thrombus 22 in the blood vessel 21, and then the plug 1 is moved relative to the first tube 4 through the operation of the driving component 5, so that the plug 1 and the support member 2 move outward, and the elastic force of the elastic component 3 drives the lower support member 2 to expand outward to form a shielding portion in the radial direction of the blood vessel 21, at this time, the shielding portion resists the distal end of the thrombus 22, and then the entire vascular thrombus removal device is moved in the reverse direction to remove the thrombus 22 from the blood vessel 21.

[0029] Further, as a preferred embodiment, the plug 1 is movable in a first position or a second position; when the plug 1 is in the first position, the plug 1 is accommodated inside one end of the first tube 4, the other end of the support member 2 abuts against the inside of the first tube 4, and the other end of the support member 2 is arranged close to the plug 1; when the plug 1 is in the second position, the plug 1 protrudes outside one end of the first tube 4, and the other end of the support member 2 is arranged away from the plug 1. Further, when the vascular thrombus removal device penetrates the thrombus 22, the plug 1 remains in the first position, at which time the support member 2 overcomes the elastic force of the elastic component 3 and is close to the outer surface of the plug 1 in a contracted state due to the abutment and restraint of the inner side of the first tube 4; after the vascular thrombus removal device penetrates the thrombus 22, the plug 1 moves outward to be in the second position, at which time the restraint of the first tube 4 will fail, and under the elastic force of the elastic component 3, the support member 2 will be in an expanded state.

[0030] Further, as a preferred embodiment, the elastic component 3 includes: a moving member 6, an elastic body 7, a connecting member 8 and a sliding member 9, the moving member 6 is slidably arranged on the plug 1, a cavity 10 is arranged on the moving member 6, the elastic body 7 is arranged in the cavity 10, one end of the connecting member 8 is connected to the elastic body 7, the sliding member 9 is connected to the other end of the connecting member 8, and the sliding member 9 is slidably connected to the support member 2. Further, when the restraint of the first tube body 4 fails, the elastic body 7 will recover from the compressed state to the expanded state, the connecting member 8 will at least move in the direction away from the axis of the plug 1, so that the other end of the moving member 6 moves in the direction away from the axis of the plug 1, the sliding member 9 slides on the support member 2, and the moving member 6 will slide in the direction close to the far end of the plug 1, so that the support member 2 is expanded.

[0031] Further, as a preferred embodiment, the moving member 6 is slidably disposed along the axial direction of the plug 1, and the moving member 6 at least partially penetrates the plug 1 in the radial direction of the plug 1.

[0032] Further, as a preferred embodiment, the elastomer 7 is preferably a spring extending in the radial direction of the plug 1, and both ends of the cavity 10 in the radial direction of the plug 1 are open.

[0033] Further, as a preferred embodiment, the two support members 2 are respectively disposed on both sides of the plug 1, the two sliding members 9 are respectively slidably disposed on the two support members 2, one ends of the two connecting members 8 are respectively connected to both ends of the elastomer 7, and the other ends of the two connecting members 8 are respectively connected to the two sliding members 9.

[0034] Further, as a preferred embodiment, it further includes: a guide rail 11, the guide rail 11 is disposed on the plug 1, and the moving member 6 is slidably disposed on the guide rail 11.

[0035] Further, as a preferred embodiment, the two guide rails 11 are disposed opposite to each other on both sides of the plug 1.

[0036] Further, as a preferred embodiment, a recess is respectively formed on both sides of the plug 1. When the support member 2 is in the above-mentioned contracted state, the support member 2 abuts against the recess, and the outer side of the support member 2 is flush with the outer wall of the plug 1 at least in the axial direction.

[0037] Further, as a preferred embodiment, a necking member 12 is disposed inside one end of the first tube 4, and a through hole is formed inside the necking member 12. When the plug 1 is in the first position, the support member 2 abuts against the inner wall of the through hole. Further, the setting of the necking member 12 provides a restraint for keeping the plug 1 in the first position to overcome the elastic force of the elastomer 7.

[0038] Further, as a preferred embodiment, the driving assembly 5 includes: a second tube 13 and a pushing member 14. One end of the second tube 13 is connected to the other end of the plug 1, the pushing member 14 is connected to the other end of the second tube 13, the second tube 13 is axially movably disposed inside the first tube 4, and the pushing member 14 protrudes outside the other end of the first tube 4. Further, under the action of the pushing member 14, a mounting base is provided for the plug 1, and under the axial movement drive of the pushing member 14, the second tube 13 will move relative to the first tube 4 so that the plug 1 can move relative to the first tube 4, so that the plug 1 can be switched between the first position and the second position.

[0039] Further, as a preferred embodiment, it further includes: a connecting rod 15 and a driving member 16. The connecting rod 15 is axially movably arranged in the second tube 13. One end of the connecting rod 15 is connected to the moving member 6, and the other end of the connecting rod 15 is connected to the driving member 16. Further, under the drive of the driving member 16, the connecting rod 15 will drive the moving member 6 on the plug 1 to move relative to the plug 1, so that the connecting member 8 and the sliding member 9 cooperate to drive the support member 2 to expand to different angles; preferably, when the moving member 6 is pushed to the left, the support member 2 will gradually expand outwards.

[0040] Further, as a preferred embodiment, the driving member 16 is preferably movably arranged through the pushing member 14 and should have an operating part extending outwards.

[0041] Further, as a preferred embodiment, the driving member 16 is fixedly connected to the moving member 6 and can directly drive the movement of the connecting rod 15 through axial movement; or a screw drive is adopted, that is, the distal end of the connecting rod 15 is rotatably connected to the moving member 6, and the outer edge of the connecting rod 15 is in screw drive with the inner edge of the second tube 13 to drive the connecting rod 15 to move under the rotation of the driving member 16.

[0042] Further, as a preferred embodiment, the included angle formed by the extension lines of the two support members 2 in the length direction can preferably be controllably adjusted between 30° and 60°.

[0043] Further, as a preferred embodiment, it further includes: a third tube 17 and a rotating member 18. External threads are provided on the outer wall of the first tube 4, and internal threads are provided on the inner wall of the third tube 17. The internal threads and the external threads match, and the rotating member 18 is connected to the other end of the first tube 4. Further, under the drive of the rotating member 18, the first tube 4 will perform a screw propulsion movement relative to the third tube 17. The movement of the third tube 17 relative to the first tube 4 is preferably used when moving this blood vessel thrombectomy device; specifically, the third tube 17 is used as a carrier for overall movement. After approaching the thrombus 22, the first tube 4 is driven to move by the rotating member 18. At this time, at least part of the plug 1 protrudes from the first tube 4 to form a part that can penetrate the thrombus 22, so that the first tube 4 moves relative to the third tube 17 and penetrates the thrombus 22.

[0044] Further, as a preferred embodiment, the rotating member 18 can be fixedly connected to the first tube body 4. When the rotating member 18 is rotated, the first tube body 4 can be driven to rotate, so that the first tube body 4 moves spirally along the thread of the third tube body 17; or the rotating member 18 can be rotatably mounted on the third tube body 17, and the inner side of the rotating member 18 is provided with a thread. At this time, the inner wall of the third tube body 17 does not need to be provided with an internal thread, and an axially extending sliding fit structure should also be provided on the outer wall of the first tube body 4, that is, to limit the first tube body 4 and the third tube body 17 to only move relative to each other along the axial direction. At this time, rotating the rotating member 18 can drive the first tube body 4 to move relative to the third tube body 17.

[0045] The above are only preferred embodiments of the present invention, and do not limit the implementation manners and protection scope of the present invention accordingly.

[0046] The present invention also has the following implementation manners on the above basis:

[0047] In a further embodiment of the present invention, a sharp portion 19 is formed at one end of the plug 1.

[0048] In a further embodiment of the present invention, when the plug 1 is in the second position, an outer edge of the sharp portion 19 of the plug 1 and the outer sides of the two support members 2 together form a V-shaped outer edge.

[0049] In a further embodiment of the present invention, one end of the support member 2 is hinged to the distal end of the plug 1 or the other end of the support member 2 can move relative to one end thereof by bending deformation through elastic deformation of the support member 2 itself.

[0050] In a further embodiment of the present invention, a chute is provided along the length direction on the inner side of the support member 2, and the sliding member 9 is slidably disposed in the chute.

[0051] In a further embodiment of the present invention, it further includes: a protrusion member 20, the protrusion member 20 is disposed on the outer side of the plug 1, the protrusion member 20 is disposed near the other end of the support member 2, and the connecting member 8 is movably abutted against the protrusion member 20. Further, the setting of the protrusion member 20 is used to limit the movement of the connecting member 8 in the direction close to the driving assembly 5.

[0052] The above are only preferred embodiments of the present invention, and do not limit the implementation manners and protection scope of the present invention accordingly. For those skilled in the art, it should be able to realize that all equivalent replacements and obvious changes made by using the description and illustrations of the present invention should be included in the protection scope of the present invention.

Claims

1. A vascular thrombectomy device, characterized in that: include: A plug, a support, an elastic component, a first tube body and a driving component; One end of the support member is connected to the plug, the elastic component is arranged on the plug, and the elastic component is at least used to provide an elastic force, and the elastic force is used to make the other end of the support member have a tendency to move in a direction away from the plug; The other end of the plug is connected to the driving assembly, and the driving assembly is at least used to drive the plug to move relative to the first tube body; wherein the plug is movably in a first position or a second position; When the plug is in the first position, the plug is accommodated inside one end of the first tube, the other end of the support member abuts against the inner side of the first tube, and the other end of the support member is arranged close to the plug; When the plug is in the second position, the plug protrudes out of the outer side of one end of the first tube body, and the other end of the support member is arranged away from the plug.

2. The vascular thrombectomy device according to claim 1, characterized in that: The elastic component includes: a moving part, an elastic body, a connecting part and a sliding part. The moving part can be slidably arranged on the plug. A cavity is arranged on the moving part. The elastic body is arranged in the cavity. One end of the connecting part is connected to the elastic body. The sliding part is connected to the other end of the connecting part. The sliding part is slidably connected to the supporting part.

3. The vascular thrombectomy device according to claim 2, characterized in that: The two supporting members are respectively arranged on both sides of the plug, the two sliding members are respectively slidably arranged on the two supporting members, one end of the two connecting members is respectively connected to the two ends of the elastic body, and the other end of the two connecting members is respectively connected to the two sliding members.

4. The vascular thrombectomy device according to claim 2, characterized in that: Also includes: A guide rail is arranged on the plug, and the moving member is slidably arranged on the guide rail.

5. The vascular thrombectomy device according to claim 1, characterized in that: A necking piece is disposed in one end of the first tube body, and a through hole is formed on the inner side of the necking piece. When the plug is in the first position, the support piece abuts against the inner wall of the through hole.

6. The vascular thrombectomy device according to claim 2, characterized in that: The driving assembly includes: a second tube body and a pushing member, one end of the second tube body is connected to the other end of the plug, the pushing member is connected to the other end of the second tube body, the second tube body is axially movably arranged in the first tube body, and the pushing member is protrudingly arranged on the outside of the other end of the first tube body.

7. The vascular thrombectomy device according to claim 6, characterized in that: It also includes: a connecting rod and a driving member, wherein the connecting rod is axially movably arranged in the second tube body, one end of the connecting rod is connected to the moving member, and the other end of the connecting rod is connected to the driving member.

8. The vascular thrombectomy device according to claim 1, characterized in that: Also includes: The third tube body and the rotating member, the outer wall of the first tube body is provided with an external thread, the inner wall of the third tube body is provided with an internal thread, the internal thread matches the external thread, and the rotating member is connected to the other end of the first tube body.

9. The vascular thrombectomy device according to claim 1, characterized in that: A sharp portion is formed at one end of the plug.

10. The vascular thrombectomy device according to claim 2, characterized in that: It also includes: a protrusion, which is arranged on the outside of the plug, the protrusion is arranged close to the other end of the support member, and the connecting member is movably arranged to abut against the protrusion.

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