Neural intervention thrombectomy and thrombolysis device

Abstract

The invention discloses a nerve intervention thrombectomy and thrombolysis device and belongs to the technical field of nerve thrombectomy, the nerve intervention thrombectomy and thrombolysis device comprises a guider and a puncture tube connected to the guider in a penetrating mode, one side of the guider is connected with a guiding tube in a penetrating mode, and the guiding tube is arranged at the center position of the puncture tube in a penetrating mode; the other side of the guider is connected with a central tube in a penetrating mode, a positioning hole is formed in the guiding tube, and the central tube is connected to the central position of the guiding tube in a penetrating mode through the positioning hole. The diameter of the central tube is smaller than that of the guide tube; a positioning mechanism which assists the central tube and the guide tube in penetrating connection is arranged in the guider; when the thrombus taking and thrombolysis device is used, the central tube can be quickly and accurately connected into the guide tube in a penetrating manner, so that a thrombolysis medicament can accurately act on blocked thrombus, and the thrombus taking and thrombolysis treatment effect is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of nerve thrombectomy, and in particular to a nerve interventional thrombectomy and thrombolysis device. Background Art

[0002] Neurointerventional thrombectomy and thrombolysis devices are important tools for the treatment of acute ischemic stroke. Their main purpose is to remove blood clots in cerebral blood vessels through mechanical or drug means and restore cerebral blood flow. Commonly used mechanical thrombectomy devices include stent thrombectomies, which can effectively improve blood flow recanalization rates and reduce complications.

[0003] For example, the patent publication number CN220089582U discloses an intracranial vascular embolus interception and protection umbrella device during interventional treatment, including an umbrella body, which is tubular and vertically arranged. The umbrella body is densely covered with through holes running through the inside and outside. The upper end of the umbrella body is folded and closed, and the lower end is provided with a thrombus removal port. The upper end of the umbrella body is connected to a head end guide wire, and the lower end of the umbrella body is connected to a delivery guide wire. The thrombus escaping through the blood vessel is collected through the thrombus removal port, and the anti-escape part can further prevent the thrombus from escaping.

[0004] Another example is the patent with publication number CN219594732U which discloses a simple negative pressure adjustment device for mechanical thrombectomy in neurointerventional department, comprising a 50ml syringe, two 20ml syringe barrels, and a fixing sleeve; the nipple of the 50ml syringe is used to plug into the side port of the Y valve; the two 20ml syringe barrels are arranged side by side, and the nipple of the 20ml syringe barrel is inserted into the gap between the tail end of the 50ml syringe barrel and the piston rod; the tail end of the 20ml syringe barrel is against the bottom surface of the 50ml syringe piston handle; the fixing sleeve is set on the two 20ml syringe barrels for fixing the two 20ml syringe barrels to the piston rod of the 50ml syringe; common 50ml and 20ml syringes are selected, and the two 20ml syringes are fixed To both sides of the 50ml syringe, a negative pressure adjustment device is formed; it is easy to obtain materials, easy to fix, and easy to use; when the thrombus formed in the blood vessel is large and completely blocked, it is difficult to achieve the desired effect by only thrombectomy or thrombolysis. Now some clinical operations combine thrombectomy with thrombolysis to dissolve large thrombi, and then mechanically remove the thrombi after their shape becomes relatively smaller. However, during the operation, it is difficult to control the position of thrombolysis and thrombolysis. If the thrombolytic agent is input far away from the thrombus position, it will affect the effect and speed of thrombolysis and affect the progress of treatment. In addition, after the puncture structure enters the patient's body, if the puncture structure moves during the thrombectomy and thrombolysis operations, it will greatly affect the accuracy of the surgical operation and is not conducive to stable thrombectomy and thrombolysis operations.

[0005] In response to the above problems, there is an urgent need for innovative designs based on the original nerve thrombectomy devices. Summary of the Invention

[0006] The purpose of the present invention is to provide a neurointerventional thrombectomy and thrombolysis device to solve the problem raised in the above background technology that during the surgical operation, the position of thrombectomy and thrombolysis is difficult to control, and the thrombolytic agent is input far away from the thrombus position, which affects the effect and speed of thrombus dissolution and affects the treatment process.

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a neurointerventional thrombectomy and thrombolysis device, comprising a guide and a puncture tube connected to the guide, one side of the guide is connected to the guide tube, the guide tube is arranged through the center of the puncture tube, and the other side of the guide is connected to the central tube, a positioning hole is provided on the guide tube, and the central tube is connected to the center of the guide tube through the positioning hole; the diameter of the central tube is smaller than the diameter of the guide tube; the guide is provided with a positioning mechanism that assists the central tube and the guide tube in being connected through the guide tube.

[0008] Preferably, the central tube includes an infusion tube, a negative pressure tube and a thrombus removal stent; the infusion tube passes through the guide tube to deliver thrombolytic agents to the thrombus; the negative pressure tube passes through the guide tube to dissolve small pieces of thrombus by negative pressure suction; the thrombus removal stent passes through the guide tube to capture large pieces of thrombus.

[0009] Preferably, the positioning mechanism includes a positioning strip fixed on the outside of the guide tube, a limiting seat is fixedly installed on the side wall of the guide near the installation center tube, and a positioning groove is provided on the limiting seat; the positioning strip is snap-connected in the positioning groove.

[0010] Preferably, a limiting mechanism is provided on the outside of the puncture tube, which can expand and reinforce the puncture position of the puncture tube.

[0011] Preferably, the limiting mechanism comprises a plurality of embedded grooves provided at equal angles on the outside of the puncture tube, wherein flexible support blocks are rotatably mounted in the embedded grooves; and a driving mechanism for driving the plurality of flexible support blocks to rotate synchronously is provided in the wall of the puncture tube.

[0012] Preferably, the driving mechanism includes a plurality of guide grooves provided at equal angles in the wall of the puncture tube, a guide slide rod being slidably connected in the guide groove, a card slot being provided at one end of the guide slide rod, an outer convex disc being fixedly connected in the card slot; a strip groove is provided on the side of the flexible support block close to the puncture tube, an inner convex disc being fixedly installed in the strip groove, a support rod being connected between the inner convex disc and the outer convex disc; one end of the support rod is rotatably connected to the inner convex disc, and the other end of the support rod is rotatably connected to the outer convex disc.

[0013] Preferably, a front sealing ring and a rear sealing ring are fixedly installed on the outside of the guide slide bar, and the front sealing ring and the rear sealing ring correspond to the two end positions of the guide slide groove respectively.

[0014] Preferably, an annular groove is provided on the inner wall of the puncture tube, a slip ring is slidably mounted in the annular groove, and an electromagnetic ring is mounted on the inner side of the slip ring; an active magnetic ring is mounted on the outside of the guide tube, and the active magnetic ring is magnetically attracted to the electromagnetic ring.

[0015] Preferably, the flexible support blocks are distributed around the outside of the puncture tube, and an elastic cover net is connected between adjacent flexible support blocks to prevent small pieces of thrombus from falling off and becoming free.

[0016] Preferably, a plurality of insertion holes are provided in the puncture tube, a plurality of countersunk holes are provided on the guide slide rod, a cylindrical rod is fixedly connected to the countersunk hole, a micro-rod is provided on the sliding sleeve outside the cylindrical rod, and a limiting spring is connected to the bottom of the countersunk hole; the micro-rod is movable and engaged with the insertion hole, and the side of the micro-rod close to the insertion hole is a hemispherical structure.

[0017] Compared with the existing technology, the beneficial effects of the present invention are: the neurointerventional thrombectomy and thrombolysis device is inserted into the patient's body through a puncture tube, and the guide tube is punctured along the puncture tube into the patient's blood vessel. The port of the guide tube is close to the location of the thrombus. According to the operating procedures, the infusion tube, negative pressure tube and thrombectomy bracket are sequentially connected through the guide tube, the location of the thrombus removal and thrombolysis is accurately located, and the thrombolytic agent can be quickly injected into the vicinity of the thrombus to keep the thrombolysis proceeding rapidly.

[0018] Furthermore, the guide is provided with a positioning mechanism for assisting the central tube and the guide tube in penetrating connection. Since different central tubes need to be penetrated and connected in the guide tube, the position of the guide tube installed in the puncture tube needs to be accurately regulated. When the guide tube penetrates into the interior of the puncture tube, the positioning strip under the guide tube is snap-connected to the positioning groove provided on the limit seat. The snap-fit ​​structure keeps the position of the positioning hole on the guide tube corresponding to the installation position of the central tube, so that the central tube can be quickly and accurately penetrated and connected to the guide tube.

[0019] Furthermore, a limiting mechanism is provided on the outside of the puncture tube for expanding and reinforcing the puncture position of the puncture tube. After the puncture tube is inserted into the patient's body, when the guide tube is pushed into the inside of the puncture tube, the electromagnetic ring in the puncture tube is turned on, and the electromagnetic ring is magnetically attracted to the active magnetic ring on the outside of the guide tube. In the process of advancing the guide tube, the electromagnetic ring and the slip ring are controlled by the magnetic attraction structure to move laterally in the inner wall of the guide tube, and the slip ring pushes the guide slide rod to move. The multiple flexible support blocks on the outside of the puncture tube are controlled to rotate and unfold synchronously through the support rod transmission, so that the flexible support blocks are supported and restricted in the blood vessel, thereby limiting the puncture position of the puncture tube.

[0020] During the rotation and expansion of the flexible support blocks, the elastic cover nets connected between adjacent flexible support blocks are expanded synchronously. The expanded flexible support blocks and the elastic cover nets form a blocking structure that can block some free thrombi and improve the thrombus treatment effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the three-dimensional structure of the puncture tube of the present invention.

[0022] Figure 2 It is a schematic diagram of the three-dimensional structure of the guide tube of the present invention.

[0023] Figure 3 It is a schematic diagram of the cross-sectional structure of the guide of the present invention.

[0024] Figure 4 It is a schematic diagram of the three-dimensional structure of the limiting seat of the present invention.

[0025] Figure 5 This is a schematic diagram of the three-dimensional structure of the positioning bar of the present invention.

[0026] Figure 6 It is a schematic diagram of the three-dimensional structure of the positioning groove of the present invention.

[0027] Figure 7 It is a schematic diagram of the three-dimensional structure of the infusion tube of the present invention.

[0028] Figure 8 It is a schematic diagram of the three-dimensional structure of the negative pressure tube of the present invention.

[0029] Figure 9 Schematic diagram of the three-dimensional structure of the thrombus removal stent of the present invention.

[0030] Figure 10 It is a schematic diagram of the three-dimensional structure of the active magnetic ring of the present invention.

[0031] Figure 11 It is a schematic diagram of the three-dimensional structure of the flexible support block of the present invention.

[0032] Figure 12 It is a schematic diagram of the three-dimensional structure of the elastic cover net of the present invention.

[0033] Figure 13 It is a schematic diagram of the three-dimensional structure of the guide slide bar of the present invention.

[0034] Figure 14 It is a schematic diagram of the three-dimensional structure of the strip groove of the present invention.

[0035] Figure 15 It is a schematic diagram of the three-dimensional structure of the support rod of the present invention.

[0036] Figure 16 This is a structural diagram of the present invention in which the guide slide rod and the puncture tube are separated.

[0037] Figure 17 This is a schematic diagram of the three-dimensional structure of the micro-insertion rod of the present invention.

[0038] In the figure: 1. Guide; 2. Puncture tube; 3. Guide tube; 4. Central tube; 41. Infusion tube; 42. Negative pressure tube; 43. Thrombectomy bracket; 5. Positioning hole; 6. Positioning strip; 7. Limit seat; 8. Positioning groove; 9. Embedded groove; 10. Flexible support block; 111. Guide slide; 112. Guide slide rod; 12. Slot; 13. External convex disk; 14. Support rod; 15. Strip groove; 16. Internal convex disk; 17. Front sealing ring; 18. Rear sealing ring; 19. Annular slide; 20. Slip ring; 21. Electromagnetic ring; 22. Active magnetic ring; 23. Elastic cover net; 24. Jack; 25. Countersunk hole; 26. Cylindrical rod; 27. Micro-insertion rod; 28. Limit spring. DETAILED DESCRIPTION

[0039] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0040] Example 1: Please refer to Figures 1-17 The present invention provides the following technical solutions: a neurointerventional thrombectomy and thrombolysis device, comprising a guide 1 and a puncture tube 2 connected through the guide 1, a guide tube 3 is connected through one side of the guide 1, and the guide tube 3 is arranged through the center of the puncture tube 2, and a central tube 4 is connected through the other side of the guide 1, a positioning hole 5 is opened on the guide tube 3, and the central tube 4 is connected to the center of the guide tube 3 through the positioning hole 5; the diameter of the central tube 4 is smaller than the diameter of the guide tube 3; a positioning mechanism is provided in the guide 1 to assist the central tube 4 and the guide tube 3 in being connected through.

[0041] The central tube 4 includes an infusion tube 41, a negative pressure tube 42 and a thrombectomy bracket 43; the infusion tube 41 passes through the guide tube 3 to inject thrombolytic agents into the thrombus; the negative pressure tube 42 passes through the guide tube 3 to attract and dissolve small pieces of thrombus after negative pressure; the thrombectomy bracket 43 passes through the guide tube 3 to capture large pieces of thrombus.

[0042] The positioning mechanism includes a positioning strip 6 fixed to the outside of the guide tube 3, and a limit seat 7 is fixedly installed on the side wall of the guide 1 near the installation center tube 4. The limit seat 7 is provided with a positioning groove 8; the positioning strip 6 is snap-fitted into the positioning groove 8.

[0043] During the operation, the puncture tube 2 is first punctured into the patient's body, the guide tube 3 is passed through one side of the guide 1, and the guide tube 3 is pushed forward so that the guide tube 3 passes through the puncture tube 2. The guide tube 3 moves into the patient's blood vessel, moves and advances along the direction of the blood vessel, and finally moves the guide tube 3 to a position close to the distribution of thrombus in the blood vessel.

[0044] In the process of advancing the movable guide tube 3, it is necessary to adjust and limit the position of the guide tube 3 inside the guide 1 so that the positioning bar 6 on the guide tube 3 is in the directly lower position. When the guide tube 3 is advanced, the positioning bar 6 on the guide tube 3 is engaged with the positioning groove 8 opened on the limit seat 7 in the guide 1. Through the engagement connection between the positioning bar 6 and the positioning groove 8, the positioning hole 5 opened on the guide tube 3 can be kept in the lower position, and the positioning hole 5 corresponds to the position of the center tube 4 installed on the guide 1.

[0045] According to the progress of the operation, the infusion tube 41 is first installed in the guide 1, and the infusion tube 41 is inserted into the guide tube 3 through the positioning hole 5. The port of the infusion tube 41 is close to the thrombus position along the direction of the guide tube 3. The medicine input by the infusion tube 41 directly acts on the surface of the thrombus, so that the thrombus can be quickly dissolved and the volume of the thrombus is reduced. Then the infusion tube 41 is withdrawn, and the negative pressure tube 42 is installed in the guide 1. The negative pressure tube 42 is inserted into the guide tube 3 through the positioning hole 5 and is inserted along the guide tube 3. The direction makes the end of the negative pressure tube 42 close to the position after the thrombus is dissolved, and some small pieces of thrombus are first sucked out by negative pressure through the negative pressure tube 42. The negative pressure tube 42 is withdrawn, and then the thrombus removal bracket 43 is installed in the guide 1. The thrombus removal bracket 43 passes through the positioning hole 5 and enters the guide tube 3. Along the direction of the guide tube 3, the end of the thrombus removal bracket 43 is made close to the position of the large piece of thrombus. The thrombus removal bracket 43 grabs the thrombus and discharges it outward. Through the above steps, thrombus removal and thrombolysis are effectively combined to quickly remove the thrombus blocked in the blood vessel.

[0046] Example 2: Based on Example 1, a limiting mechanism is further disclosed, and its specific structure is as follows: a limiting mechanism is provided on the outside of the puncture tube 2, which can expand and reinforce the puncture position of the puncture tube 2; the limiting mechanism includes multiple embedded grooves 9 provided at equal angles on the outside of the puncture tube 2, and a flexible support block 10 is rotatably installed in the embedded groove 9; a driving mechanism is provided in the wall of the puncture tube 2 to drive the multiple flexible support blocks 10 to rotate synchronously.

[0047] The driving mechanism includes a plurality of guide grooves 111 provided at equal angles in the wall of the puncture tube 2, a guide slide rod 112 being slidably connected in the guide groove 111, a card slot 12 being provided at one end of the guide slide rod 112, an outer convex disc 13 being fixedly connected in the card slot 12; a strip groove 15 is provided on the side of the flexible support block 10 close to the puncture tube 2, an inner convex disc 16 being fixedly installed in the strip groove 15, a support rod 14 being connected between the inner convex disc 16 and the outer convex disc 13; one end of the support rod 14 is rotatably connected to the inner convex disc 16, and the other end of the support rod 14 is rotatably connected to the outer convex disc 13.

[0048] A front sealing ring 17 and a rear sealing ring 18 are fixedly mounted on the outside of the guide slide bar 112 . The front sealing ring 17 and the rear sealing ring 18 are respectively located at two end positions of the guide slide groove 111 .

[0049] An annular groove 19 is provided on the inner wall of the puncture tube 2, in which a slip ring 20 is slidably mounted, and an electromagnetic ring 21 is mounted inside the slip ring 20; an active magnetic ring 22 is mounted on the outside of the guide tube 3, and the active magnetic ring 22 is magnetically attracted to the electromagnetic ring 21.

[0050] The flexible support blocks 10 are distributed around the outside of the puncture tube 2, and an elastic cover net 23 is connected between adjacent flexible support blocks 10 to prevent small pieces of thrombus from falling off and becoming free.

[0051] A plurality of insertion holes 24 are provided in the puncture tube 2, and a plurality of countersunk holes 25 are provided on the guide slide 112. A cylindrical rod 26 is fixedly connected to the countersunk hole 25, and a micro-rod 27 is provided on the outer sliding sleeve of the cylindrical rod 26. The micro-rod 27 is connected to the bottom of the countersunk hole 25 with a limiting spring 28; the micro-rod 27 moves to engage with the insertion hole 24, and the side of the micro-rod 27 close to the insertion hole 24 has a hemispherical structure.

[0052] When the guide tube 3 is pushed forward and moves in the puncture tube 2, the electromagnetic ring 21 on the puncture tube 2 is turned on to generate magnetism. When the active magnetic ring 22 on the guide tube 3 moves to the inner side of the electromagnetic ring 21, the active magnetic ring 22 is magnetically attracted to the electromagnetic ring 21, and the guide tube 3 continues to be pushed forward under the attraction. The guide tube 3 drives the electromagnetic ring 21 and the slip ring 20 to move laterally, and the slip ring 20 pushes the guide slide bar 112 to slide along the direction of the guide slide groove 111. The two ends of the support rod 14 connected between the guide slide bar 112 and the flexible support block 10 rotate accordingly, and the rotating support rod 14 pushes the flexible support block 10 to rotate outward. Through the above structure, the multiple flexible support blocks 10 on the puncture tube 2 can be synchronously rotated and expanded outward, so that the flexible support block 10 is rotated and supported in the blood vessel, limiting the puncture position of the puncture tube 2 and maintaining the stability of the puncture position of the puncture tube 2 when the central tube 4 is subsequently inserted and withdrawn.

[0053] When the guide slide 112 slides in the guide groove 111, the micro-rod 27 on the guide slide 112 moves synchronously. When the micro-rod 27 moves to above the corresponding socket 24, the hemispherical structure at the lower end of the micro-rod 27 moves downward and engages into the socket 24 under the elastic thrust of the limit spring 28. The engagement between the micro-rod 27 and the socket 24 can limit the moving position of the guide slide 112, thereby limiting the rotation position of the flexible support block 10.

[0054] After the operation is over, when the guide tube 3 is controlled to move and withdraw from the inside of the puncture tube 2, the electromagnetic ring 21 is turned on again. Under the magnetic attraction of the electromagnetic ring 21 and the active magnetic ring 22, the slip ring 20 moves in the opposite direction, and under the transmission of the guide slide 112 and the support rod 14, the flexible support block 10 rotates and closes in the embedded groove 9. At this time, the micro-insertion rod 27 on the guide slide 112 moves to engage with another socket 24 in the puncture tube 2, limiting the position of the flexible support block 10 to rotate to the closed state.

[0055] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "connected" and "connection" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integral connection; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediary. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0056] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A neuro-interventional thrombectomy and thrombolysis device, comprising a guide (1) and a puncture tube (2) connected to the guide (1), characterized in that: One side of the guide (1) is connected to a guide tube (3), which is arranged to penetrate the center of the puncture tube (2). The other side of the guide (1) is connected to a center tube (4), and a positioning hole (5) is provided on the guide tube (3). The center tube (4) is connected to the center of the guide tube (3) through the positioning hole (5). The diameter of the central tube (4) is smaller than the diameter of the guide tube (3); The guide (1) is provided with a positioning mechanism through which the auxiliary central tube (4) and the guide tube (3) are connected.

2. The neurointerventional thrombectomy and thrombolysis device according to claim 1, characterized in that: The central tube (4) includes an infusion tube (41), a negative pressure tube (42) and a thrombus removal bracket (43); The infusion tube (41) passes through the guide tube (3) to deliver a thrombolytic agent into the thrombus; The negative pressure tube (42) passes through the guide tube (3) to absorb and dissolve small pieces of thrombus under negative pressure; The thrombus removal stent (43) passes through the guide tube (3) to capture large thrombi.

3. The neurointerventional thrombectomy and thrombolysis device according to claim 1, characterized in that: The positioning mechanism includes a positioning strip (6) fixed to the outside of the guide tube (3), a limiting seat (7) fixedly installed on the side wall of the guide (1) near the installation center tube (4), and a positioning groove (8) is provided on the limiting seat (7); The positioning strip (6) is snap-connected in the positioning groove (8).

4. The neurointerventional thrombectomy and thrombolysis device according to claim 1, characterized in that: The outside of the puncture tube (2) is provided with a limiting mechanism capable of expanding and reinforcing the puncture position of the puncture tube (2).

5. The neurointerventional thrombectomy and thrombolysis device according to claim 4, characterized in that: The limiting mechanism comprises a plurality of embedded grooves (9) provided at equal angles on the outside of the puncture tube (2), wherein a flexible support block (10) is rotatably mounted in the embedded groove (9); A driving mechanism for driving the multiple flexible support blocks (10) to rotate synchronously is provided in the wall of the puncture tube (2).

6. The neurointerventional thrombectomy and thrombolysis device according to claim 5, characterized in that: The driving mechanism comprises a plurality of guide slots (111) provided at equal angles in the wall of the puncture tube (2), a guide slide rod (112) being slidably connected in the guide slots (111), a clamping slot (12) being provided at one end of the guide slide rod (112), and an outer convex disc (13) being fixedly connected in the clamping slot (12); The flexible support block (10) is provided with a strip groove (15) on one side close to the puncture tube (2), an inner convex disc (16) is fixedly installed in the strip groove (15), and a support rod (14) is connected between the inner convex disc (16) and the outer convex disc (13); One end of the support rod (14) is rotatably connected to the inner convex disc (16), and the other end of the support rod (14) is rotatably connected to the outer convex disc (13).

7. The neurointerventional thrombectomy and thrombolysis device according to claim 6, characterized in that: A front sealing ring (17) and a rear sealing ring (18) are fixedly mounted on the outside of the guide slide bar (112), and the front sealing ring (17) and the rear sealing ring (18) are respectively located at the two end positions of the guide slide groove (111).

8. The neurointerventional thrombectomy and thrombolysis device according to claim 6, characterized in that: An annular chute (19) is provided on the inner wall of the puncture tube (2), a slip ring (20) is slidably mounted in the annular chute (19), and an electromagnetic ring (21) is mounted on the inner side of the slip ring (20); An active magnetic ring (22) is embedded and installed on the outside of the guide tube (3), and the active magnetic ring (22) is magnetically attracted to the electromagnetic ring (21).

9. The neurointerventional thrombectomy and thrombolysis device according to claim 6, characterized in that: The flexible support blocks (10) are distributed around the outside of the puncture tube (2), and an elastic cover net (23) is connected between adjacent flexible support blocks (10) to prevent small pieces of thrombus from falling off and becoming free.

10. The neurointerventional thrombectomy and thrombolysis device according to claim 7, characterized in that: The puncture tube (2) is provided with a plurality of insertion holes (24), the guide slide rod (112) is provided with a plurality of countersunk holes (25), a cylindrical rod (26) is fixedly connected to the countersunk hole (25), a micro-insertion rod (27) is provided on the outer sliding sleeve of the cylindrical rod (26), and a limit spring (28) is connected to the bottom of the countersunk hole (25); The micro-insertion rod (27) is movable and engaged with the insertion hole (24), and the side of the micro-insertion rod (27) close to the insertion hole (24) is in a hemispherical structure.

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