CN217938321U

CN217938321U - Thrombectomy support

Info

Publication number: CN217938321U
Application number: CN202221920851.4U
Authority: CN
Inventors: 梁柱; 李爽; 郭力友; 夏洁
Original assignee: Suzhou Zhongtian Medical Device Technology Co ltd
Current assignee: Suzhou Zhongtian Medical Device Technology Co ltd
Priority date: 2022-07-25
Filing date: 2022-07-25
Publication date: 2022-12-02
Anticipated expiration: 2032-07-25

Abstract

The utility model belongs to the technical field of medical instrument, a thrombectomy support is disclosed, it includes: microcatheter, delivery guidewire, embolectomy rack, filter embolus and crushed embolus rack. The delivery guide wire is arranged in the micro catheter in a penetrating way; the embolectomy frame is arranged on the delivery guide wire and is connected in the micro catheter in a sliding way, and the embolectomy frame can selectively extend out of the micro catheter and expand to be tightly attached to the inside of the blood vessel; a filter plug is disposed on the delivery guidewire for retaining thrombus within the embolectomy cage. The broken bolt frame is arranged in the bolt taking frame to press the thrombus along with the contraction of the bolt taking frame. Therefore, the cutting of the thrombus by the broken embolus frame effectively ensures the contractility of the embolus taking frame in the withdrawing process, so that the embolus taking frame and the micro catheter can be withdrawn smoothly, and the risk of the operation is greatly reduced.

Description

Thrombectomy support

Technical Field

The utility model relates to the technical field of medical equipment, especially, relate to a get and tie support.

Background

Thrombi are small pieces formed by the blood flow at the denuded or repaired site within the vessels of the cardiovascular system. Among the current treatments for thrombi, mechanical endoluminal embolectomy is becoming the first choice for patients and physicians due to its high vascular recanalization rate and low trauma.

In the prior art, the bolt taking system comprises a support and a plurality of layers of filter screens arranged on the support. The stent is sent to a designated position through a catheter, the expansion of the filter screen is utilized to be attached to the blood vessel, so that thrombus is retained in the stent, and the stent and the filter screen are withdrawn simultaneously to finish thrombus extraction.

However, in the above process, because thrombus enters the stent, the internal volume of the stent changes, when thrombus particles are large, the stent is greatly extruded, when the stent needs to be withdrawn, the stent cannot be contracted to block one end of the catheter, so that the withdrawal of the catheter is influenced, and the risk of the operation is increased.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a get and tie support has solved among the prior art thrombus that gets into in the support and has influenced the support shrink and lead to the problem of operation risk increase.

To achieve the purpose, the utility model adopts the following technical proposal:

an embolectomy support, comprising: microcatheter, delivery guidewire, embolectomy rack, filter embolus and crushed embolus rack. A delivery guide wire is arranged in the micro-catheter in a penetrating way; the embolectomy frame is arranged on the delivery guide wire and is connected in the micro catheter in a sliding mode, and the embolectomy frame can selectively stretch out of the micro catheter and expand to be attached to the inside of a blood vessel; a embolectomy member is disposed on the delivery guidewire for retaining thrombus within the embolectomy cage. A thrombus rack is arranged in the thrombus rack to compress thrombus along with the contraction of the thrombus rack.

Optionally, the particle holder comprises: and the stents are distributed at intervals along the circumferential direction of the delivery guide wire, and the stents are provided with cutting surfaces for cutting thrombus.

Optionally, the thrombectomy support comprises: the connecting sleeve is internally provided with a connecting hole for the conveying guide wire to pass through; and the connecting ring is sleeved on the connecting sleeve, and the bolt taking frame partially extends into the space between the connecting ring and the connecting sleeve and is fixedly connected with the connecting sleeve.

Optionally, the filter plug member comprises: the proximal end connecting part is fixed on the conveying guide wire; a distal end connecting portion slidably connected to the delivery guidewire; and a retention section provided between the proximal end connection section and the distal end connection section, the retention section expanding or contracting with the slippage of the distal end connection section.

Optionally, the retention section is a mesh disc.

Optionally, the mesh discs are distributed at intervals along the extending direction of the delivery guide wire.

Optionally, the retention portion is a screen.

Optionally, the filter bolt piece is arranged in the bolt taking frame; and/or the bolt taking frame is of a closed grid structure; and/or the filter plug member has a plurality of mesh openings of the same size.

Optionally, the bolt taking frame is of a closed grid structure; the filter bolt piece is positioned on one side of the bolt taking frame away from the micro catheter; and/or the filter plug member has a plurality of meshes, and the cross-sectional area of the meshes at the proximal end is larger than that of the meshes at the distal end.

Optionally, the thrombectomy support further comprises: a visualization ring disposed at a distal end of the microcatheter; and/or a visualization point disposed at a distal end of the embolectomy rack.

The utility model has the advantages that:

the thrombus taking frame is conveyed to a designated position by utilizing the micro catheter and the conveying guide wire, and after the thrombus taking frame leaves the micro catheter, the thrombus taking frame can be automatically expanded to prop open thrombus and abut against the inside of a blood vessel, and meanwhile, the thrombus filtering piece is expanded to stay the thrombus in the thrombus taking frame. When withdrawing, carry the seal wire through the pulling and drive get the cock frame and stretch into little pipe in, the outer wall that the cock frame was got in the extrusion of little pipe makes and gets the shrink of cock frame, gets the cock frame and will extrude garrulous cock frame when the shrink, garrulous cock frame will extrude the cutting to the thrombus of getting in the cock frame to cut apart into the tiny particle with the large granule thrombus, in order to ensure to get the smooth shrink of cock frame and get into little pipe, thereby accomplish the withdrawal of little pipe smoothly. Therefore, the thrombus is cut by the thrombus breaking frame, the contractility of the thrombus taking frame in the retraction process is effectively ensured, the thrombus taking frame and the micro catheter can be smoothly retracted, and the risk of an operation is greatly reduced.

Drawings

Fig. 1 is a schematic structural view of a thrombectomy support according to some embodiments of the present invention.

Fig. 2 is a schematic view of the stent deployment device according to some embodiments of the present invention extending into a blood vessel.

Fig. 3 is a schematic view of the retraction of the thrombectomy stent according to some embodiments of the present invention.

Fig. 4 is a schematic diagram of the connection between the thrombectomy rack and the delivery guidewire of some embodiments of the present invention.

Fig. 5 is a schematic diagram of a bolt breaking bracket of the bolt taking bracket according to some embodiments of the present invention.

Fig. 6 is a schematic view of the filter bolt member of the bolt-removing bracket disposed in the bolt-removing bracket according to some embodiments of the present invention.

Fig. 7 is a schematic structural view of the bolt taking bracket according to some embodiments of the present invention, in which the filter bolt member is disposed outside the bolt taking bracket.

Fig. 8 is a schematic view of the deployment of an embolectomy stent into a tortuous vessel in accordance with certain embodiments of the present invention.

Fig. 9 is a schematic view of the expansion of the plug filter element of the thrombectomy stent according to some embodiments of the present invention.

Fig. 10 is a schematic view of the retraction of the filter plug member in the thrombectomy support according to some embodiments of the present invention.

Fig. 11 is a schematic view of a thrombus removal support according to some embodiments of the present invention, wherein the thrombus removal support has a uniform mesh size of the thrombus removal elements.

Fig. 12 is a schematic view of the thrombus removal frame according to some embodiments of the present invention, wherein the thrombus removal frame has different mesh sizes of the thrombus removal elements.

Fig. 13 is a schematic view of the structure of the thrombus removal device of some embodiments of the present invention in which the filter member is a filter screen.

In the figure:

100. a microcatheter; 110. a developing ring; 200. delivering a guide wire; 300. taking a bolt frame; 310. connecting sleeves; 311. Connecting holes; 312. a ring groove; 320. a connecting ring; 331. a ring block; 332. a connecting rod; 400. a filter plug member; 410. a proximal end connection; 420. a distal end connection portion; 430. a retention section; 500. a bolt breaking frame.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not to be construed as limiting the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, detachably connected, or integral to one another; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or may be connected through the use of two elements or the interaction of two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. "beneath," "under" and "beneath" a first feature includes the first feature being directly beneath and obliquely beneath the second feature, or simply indicating that the first feature is at a lesser elevation than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "right", etc. are used in an orientation or positional relationship based on that shown in the drawings only for convenience of description and simplicity of operation, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.

Fig. 1 is a schematic structural view of a thrombectomy support according to some embodiments of the present invention. Fig. 2 is a schematic view of the stent deployment device according to some embodiments of the present invention extending into a blood vessel. Referring to fig. 1 and 2, the present invention provides a thrombectomy support, which comprises: a microcatheter 100, a delivery guidewire 200, a thrombectomy rack 300, a thrombectomy element 400, and a thrombectomy rack 500. A delivery guidewire 200 is threaded into the microcatheter 100. The embolectomy device 300 is disposed over the delivery guidewire 200 and slidably attached within the microcatheter 100. The embolectomy device 300 can be selectively extended out of the microcatheter 100 and expanded to fit within the blood vessel. The plug elements 400 are disposed on the delivery guidewire 200 for retaining thrombus within the embolectomy holder 300. The thrombus rack 500 is disposed within the embolectomy rack 300 to compress the thrombus as the embolectomy rack 300 contracts.

Specifically, the microcatheter 100 is in the form of a strip having an outer diameter less than the inner diameter of the blood vessel. The delivery guidewire 200 is threaded into the proximal end of the microcatheter 100 and out the distal end of the microcatheter 100, and the delivery guidewire 200 is threaded through the thrombus within the vessel to guide the movement of the embolectomy holder 300. The embolectomy device 300 is disposed over the delivery guidewire 200, and the embolectomy device 300 has an expanded state and a contracted state, and is in the contracted state when the embolectomy device 300 is positioned within the microcatheter 100 to facilitate movement within a blood vessel. When the stent 300 is extended out of the microcatheter 100, the stent 300 is automatically expanded to be in an expanded state, and the outer diameter of the stent 300 in the expanded state is larger than the inner diameter of the blood vessel. The embolectomy frame 300 can comprise two parts, one part is in a cylindrical grid shape, the cylindrical grid shape has certain radial supporting force when being expanded, so that thrombus can be propped open and tightly attached to the inner wall of a blood vessel when the embolectomy frame 300 is expanded, and partial thrombus is enabled to be dissociated and enter the cylindrical grid shape through embedding the thrombus into the grid on the embolectomy frame 300, and the blockage and detention are realized through the embolectomy piece 400. And the other part is conical and is arranged at the proximal end of the cylindrical part, and the outer diameter of the conical shape decreases from the distal end to the proximal end, so that the embolectomy holder 300 can enter the micro-catheter 100. The tip of the conical portion is fixedly attached to the delivery guidewire 200, and the other end of the conical portion can be integrally formed with the cylindrical portion.

The filter bolt element 400 is arranged on the delivery guide wire 200 and close to the far end of the embolectomy frame 300, the filter bolt element 400 can contract and expand along the delivery guide wire 200, the outer side surface of the filter bolt element 400 can be close to the inner side wall of the embolectomy frame 300 or the inner side wall of a blood vessel when expanding, so as to close the opening at the far end of the embolectomy frame 300 and prevent emboli which partially permeate meshes of the embolectomy frame and are free in the embolectomy frame cavity from escaping. The thrombus collecting rack 500 is arranged at the near end in the cavity and can be bent and extended towards the far end, and the thrombus collecting rack 300 has certain strength and certain elasticity, namely, the thrombus can be cut and blocked, and the thrombus collecting rack can also deform along with the deformation of the thrombus collecting rack 300.

It should be noted that, in the present embodiment, the "proximal end" and the "distal end" are relative to the operator, and when the operator holds the microcatheter 100, the end close to the operator is the proximal end, and the end far from the operator is the distal end. Taking the orientation of fig. 1 as an example, the left side is the proximal end of the microcatheter 100 and the right side is the distal end of the microcatheter 100.

Fig. 3 is a schematic view of the retraction of the thrombectomy stent according to some embodiments of the present invention. Referring to fig. 3, when the thrombus removal treatment is performed, the thrombus removal frame 300 is moved to a designated position by the microcatheter 100 and the delivery guide wire 200, the microcatheter 100 is withdrawn, the thrombus removal frame 300 is separated from the microcatheter 100, the thrombus removal frame 300 is automatically expanded to prop open thrombus and cling to the inner wall of the blood vessel, and the thrombus filter 400 is expanded to retain the thrombus entering the thrombus removal frame 300 in the thrombus removal frame 300. When the micro catheter 100 is retracted, the delivery guide wire 200 is pulled to drive the embolectomy frame 300 to extend into the micro catheter 100, the micro catheter 100 extrudes the outer wall of the embolectomy frame 300 to enable the embolectomy frame 300 to contract, the embolectomy frame 300 extrudes the embolectomy frame 500 when contracting, the embolectomy frame 500 extrudes and cuts thrombus in the embolectomy frame 300, large-particle thrombus is divided into small particles, the embolectomy frame 300 is ensured to be smoothly contracted to enter the micro catheter 100, and the micro catheter 100 is smoothly retracted. Therefore, the thrombus is cut by the thrombus breaking frame 500, the contractility of the thrombus taking frame 300 in the withdrawing process is effectively ensured, the thrombus taking frame 300 and the micro catheter 100 can be successfully withdrawn, and the risk of the operation is greatly reduced.

Referring to fig. 3, in some embodiments of the present invention, the thrombectomy support further comprises: a developer ring 110 and a developer dot. A visualization ring 110 is disposed at the distal end of the microcatheter 100. The visualization point is located at the distal end of the thrombectomy rack 300. Specifically, the developing ring 110 and the developing point may be made of a material such as platinum-iridium alloy, which is visible under X-ray irradiation. It should be understood that other heavy metals may be used, as long as they can be viewed by X-ray irradiation. Through setting up development ring 110 and development point, can make things convenient for operating personnel to carry out the position of looking over little pipe 100 and getting bolt frame 300 and stretching into, and set up development ring 110 and development point simultaneously, can also make things convenient for operating personnel to look over the relative position of getting bolt frame 300 and little pipe 100 to when getting bolt frame 300 expansion, confirm the distance that little pipe 100 withdraws back and when getting bolt frame 300 shrink, get bolt frame 300 and stretch into little pipe 100 and the distance that needs the withdrawal back.

In some embodiments of the present invention, the latch frame 300 is a closed grid structure. Specifically, get bolt frame 300 and adopt the tubular metal resonator to constitute, form foretell lattice construction through laser cutting, the material of this tubular metal resonator can be for materials such as nickel titanium alloy or magnesium alloy or stainless steel, and the material of specifically getting bolt frame 300 can design according to actual application requirement, the utility model discloses do not limit. The grid can be a parallelogram structure, and the grid can form a quadrilateral mesh structure after expansion, so that the overall stability is good, and the grid can be compressed along the diagonal, so that the overall contractibility of the bolt taking frame 300 is good. It should be understood that the mesh may be other polygonal structures, which can satisfy the stable expansion and contraction of the bolt holder 300, and the present invention is not limited thereto.

Fig. 4 is a schematic view of the connection between the thrombectomy stent and the delivery guidewire of some embodiments of the present invention. Referring to fig. 4, in some embodiments of the present invention, the thrombectomy support comprises: a connecting sleeve 310, a connecting ring 320 and a connecting rod 332. The connecting sleeve 310 is provided with a connecting hole 311 for the transmission guide wire 200 to pass through, the outer side wall of the connecting sleeve 310 is provided with a ring groove 312, one end of the connecting rod 332 is fixedly connected with a ring block 331, the ring block 331 is embedded into the ring groove 312, and the other end of the connecting rod 332 is fixedly connected with the fastening frame 300. The connecting ring 320 is sleeved on the connecting sleeve 310.

Specifically, the middle portion of the connection sleeve 310 is provided with a connection hole 311 along the axial direction thereof, the delivery guide wire 200 extends into the connection hole 311, and the two can be fixed by glue or welding. A ring groove 312 is formed on the outer side wall of the connection sleeve 310. The tip of the latch holder 300 is fixed with two connecting rods 332 by welding, the connecting rods 332 extend along the axial direction of the connecting sleeve 310, the head of the connecting rod 332 extends into the space between the connecting sleeve 310 and the connecting ring 320, the lower side of the connecting rod is welded with the fixing ring block 331 to be inserted into the corresponding annular groove 312, and the upper side of the connecting rod is attached to the inner wall of the connecting ring 320, so as to fixedly connect the delivery guide wire 200 and the latch holder 300 together. During installation, the ring block 331 is first inserted into the ring groove 312, and then the connection ring 320 is sleeved on the connection sleeve 310 to complete the connection between the fastening frame 300 and the delivery guide wire 200.

Fig. 5 is a schematic diagram of a bolt breaking frame of the bolt taking bracket according to some embodiments of the present invention. Referring to fig. 5, in some embodiments of the invention, the latch bracket 500 includes: a plurality of brackets. The plurality of stents are distributed at intervals along the circumferential direction of the delivery guide wire 200, the stents are provided with cutting surfaces for cutting thrombus, and one side of the stents far away from the delivery guide wire 200 is arranged in a bending way. Specifically, the bracket may have a sheet shape, both ends of which are arc-shaped. The stent can be made of materials such as nickel-titanium alloy and the like, so that the stent has certain hardness and certain elasticity. The stent may extend in the radial direction of the embolectomy stent 300, and the extending direction of the stent may form an angle with the radial direction. The side of the stent near the distal end can be provided with cutting surfaces to cut thrombus. In the embodiment of the present invention, three stents are provided, and the three stents are spaced apart along the circumference of the delivery guidewire 200 to form the petal-shaped stent scaffolding 500. It should be understood that in other embodiments of the present invention, the latch bracket 500 may include four or more brackets to form other shapes of latch brackets 500, and the present invention is not limited to the specific shape of the latch bracket 500.

Fig. 6 is a schematic structural view of the bolt taking bracket according to some embodiments of the present invention, in which the bolt filtering member is disposed in the bolt taking bracket. Referring to fig. 6, in some embodiments of the invention, the filter plug member 400 is disposed within the plug holder 300. The plug filtering member 400 can be tightly attached to the inner wall of the plug taking frame 300 when being expanded, or a small gap can be formed between the plug filtering member and the inner wall of the plug taking frame 300, and the gap is smaller than the size of thrombus. Thereby, the retention of partial free thrombus can be completed.

Fig. 7 is a schematic structural view of the bolt taking bracket according to some embodiments of the present invention, in which the filter bolt member is disposed outside the bolt taking bracket. Fig. 8 is a schematic view of the thrombus removal stent extending into a tortuous vessel in accordance with certain embodiments of the present invention. Referring to fig. 7 and 8, in some embodiments of the invention, the plug filter 400 is located on the side of the rack 300 away from the microcatheter 100. Specifically, the filter plug member 400 is disposed distally outside of the plunger holder 300 such that the filter plug member 400 and the plunger holder 300 are relatively independently disposed on the delivery guidewire 200. In a tortuous blood vessel, the thrombus filter 400 can be placed in the tortuous blood vessel alone along with the bending of the delivery guide wire 200, and the thrombus taking frame 300 can be effectively attached to the blood vessel wall to capture thrombus better.

Fig. 9 is a schematic view of the expansion of the embolic filtering member of the embolic stent of some embodiments of the present invention. Fig. 10 is a schematic view of the retraction of the filter plug member in the plug removal bracket according to some embodiments of the present invention. Referring to fig. 9 and 10, in some embodiments of the invention, the filter plug 400 comprises: a proximal connection 410, a distal connection 420, and a retention portion 430. The proximal connecting portion 410 is fixed to the delivery guidewire 200. The distal junction 420 is slidably attached to the delivery guidewire 200. The retention section 430 is disposed between the proximal connecting section 410 and the distal connecting section 420, and the retention section 430 expands or contracts with the sliding movement of the distal connecting section 420.

Specifically, the delivery guidewire 200 passes through the proximal connection 410, the retention portion 430, and the distal connection 420 in that order. The proximal connecting portion 410 may be annularly sleeved on the delivery guidewire 200, and the two may be fixedly connected by gluing or welding. The distal connecting portion 420 can be a connecting ring 320, the connecting ring 320 is sleeved on the delivery guide wire 200 and is in sliding fit with the delivery guide wire 200, and the retention portion 430 is driven to contract or expand by the sliding of the connecting ring 320. The retention part 430 is made of an expandable elastic material, and the surface of the retention part may have a plurality of meshes, and the diameters of the meshes are smaller than the size of the thrombus.

Fig. 11 is a schematic view showing the structure of the plug removing member of the plug removing rack according to some embodiments of the present invention, in which the mesh size is uniform. Referring to fig. 11, in some embodiments of the invention, the filter plug member 400 has a plurality of mesh holes of the same size. Specifically, the mesh setting is on detention portion 430, and can be the parallelogram that the size is even to ensure that detention portion 430 can keep whole and get the inside contact of embolus frame 300 when expansion or shrink, ensured the stability that detention portion 430 warp, in order effectively to be detained the thrombus.

Fig. 12 is a schematic view of the thrombus removal frame according to some embodiments of the present invention, wherein the thrombus removal frame has different mesh sizes of the thrombus removal elements. Referring to fig. 12, in some embodiments of the invention, the plug member 400 has a plurality of mesh openings, and the mesh openings at the proximal end have a larger cross-sectional area than the mesh openings at the distal end. Specifically, the apertures of the meshes of the retention part 430 are different in size, that is, the apertures of the meshes close to the proximal end are larger, so that the thrombus can be embedded conveniently, and the thrombus capture effect can be improved. The pore diameter of the mesh at the far end is smaller, so that the thrombus can be prevented from being separated from the thrombus taking frame 300. The aperture may gradually decrease from the proximal end to the distal end, or may suddenly change at the middle position of the retention portion 430, which is not limited by the present invention.

Referring to fig. 9, in some embodiments of the present invention, the retention part 430 may be a mesh disk. The mesh plate may be distributed in plurality at intervals along the extending direction of the delivery guide wire 200. Specifically, the mesh disc is a braided structure, which may be disc-shaped in cross-section, and the delivery guidewire 200 is positioned through the center of the mesh disc. The apertures of the meshes of the plurality of net disks can be gradually changed, for example, two net disks are arranged, the two net disks are distributed from the near end to the far end, and the aperture of the mesh of the net disk close to the near end is larger than that of the mesh of the net disk close to the far end. It should be understood that the apertures of the plurality of mesh discs may also be constant. By providing a plurality of mesh disks, the retention capacity for thrombus can be improved. The quantity, interval and the aperture size of specific net dish all can design according to the application condition of reality, the utility model discloses do not restrict.

Fig. 13 is a schematic view of the filter plug member of the thrombus removal support being a filter net according to some embodiments of the present invention. Referring to fig. 13, in some embodiments of the present invention, the retention portion 430 is a screen. Specifically, the filter screen is formed by weaving metal wires and is integrally conical, the opening of the filter screen faces to the proximal end, and the distal end of the filter screen is oval. The filter screen can form fine and close ground mesh structure after the expansion to effectively improve the interception effect to the thrombus.

It is to be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention and are not intended to limit the embodiments of the present invention. Numerous obvious variations, rearrangements and substitutions will now occur to those skilled in the art without departing from the scope of the invention. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A thrombectomy support, comprising:

a microcatheter (100);

a delivery guidewire (200) threaded within the microcatheter (100);

a embolectomy frame (300) disposed on the delivery guidewire (200) and slidably connected in the microcatheter (100), wherein the embolectomy frame (300) can selectively extend out of the microcatheter (100) and expand to be attached to the inside of the blood vessel;

a embolus filter (400) disposed on the delivery guidewire (200) for retaining thrombus within the embolectomy cage (300); and

a thrombus rack (500) arranged in the thrombus rack (300) to press the thrombus along with the contraction of the thrombus rack (300).

2. The embolectomy support of claim 1, wherein the crushed embolus rack (500) comprises:

a plurality of stents, a plurality of the stents are distributed at intervals along the circumference of the delivery guide wire (200), and the stents are provided with cutting surfaces for cutting thrombus.

3. The embolectomy support of claim 1, wherein the embolectomy support comprises:

the connecting sleeve (310) is internally provided with a connecting hole (311) for the conveying guide wire (200) to pass through;

the connecting rod (332) is fixed on the bolt taking frame (300), a ring block (331) is fixed at one end, far away from the bolt taking frame (300), of the connecting rod (332), and a ring groove (312) for embedding the ring block (331) is formed in the outer side wall of the connecting sleeve (310); and

and the connecting ring (320) is sleeved on the connecting sleeve (310) and is tightly attached to the connecting rod (332).

4. The embolectomy support of claim 1, wherein the filter element (400) comprises:

a proximal connection (410) secured to the delivery guidewire (200);

a distal junction (420) slidably connected to the delivery guidewire (200); and

a retention section (430) provided between the proximal connection section (410) and the distal connection section (420), the retention section (430) expanding or contracting with the sliding movement of the distal connection section (420).

5. The embolectomy holder of claim 4, wherein the retention section (430) is a mesh disc.

6. The embolectomy stent of claim 5, wherein the mesh disc is distributed in plurality at intervals along the elongation direction of the delivery guide wire (200).

7. The embolectomy holder of claim 4, wherein the retention section (430) is a screen.

8. The embolectomy support of any of claims 1-7, wherein the filter member (400) is disposed within the embolectomy support (300); and/or

The bolt taking frame (300) is of a closed grid structure; and/or

The filter plug member (400) has a plurality of mesh holes of the same size.

9. The thrombectomy support according to any one of claims 1 to 7, wherein said thrombectomy member (400) is located on a side of said thrombectomy support (300) away from said microcatheter (100); and/or

The plug member (400) has a plurality of mesh openings, and the cross-sectional area of the mesh openings at the proximal end is larger than the cross-sectional area of the mesh openings at the distal end.

10. The embolectomy support of any of claims 1-7, further comprising:

a visualization ring (110) disposed at a distal end of the microcatheter (100); and/or

A visualization point disposed at a distal end of the embolectomy holder (300).