Thrombus separator and thrombus removal system

Abstract

The invention relates to the technical field of medical instruments, in particular to a thrombus separator and a thrombus removal system.The thrombus separator comprises a separation assembly, a scraping assembly and an operation assembly, a spiral crushing strip is arranged on the surface of the separation assembly, the scraping assembly comprises a cylindrical groove, an auxiliary scraping plate and a scraping plate adjusting assembly, and a moving opening is formed in the side face of the cylindrical groove; the auxiliary scraper is located in the moving opening and connected with the scraper adjusting assembly, and the scraping assembly is connected with the operation assembly. The thrombus separator has the advantages that when the thrombus separator is used, after the thrombus separator is normally pushed to the near end of a thrombus, an operator twists and pushes the operation assembly while normally pushing the separation assembly, at the moment, the separation assembly can be spirally embedded into the thrombus, and then the thrombus can be broken or removed by rotating and withdrawing the separation assembly; meanwhile, thrombus remaining on the blood vessel wall can be scraped off through the auxiliary scraping plate, and the broken thrombus can be captured and extracted by the suction catheter in cooperation with the negative pressure source.

Description

Technical Field

[0001] The present invention relates to the field of medical devices, and in particular to a thrombus separator and a thrombus removal system. Background Art

[0002] Thrombi are small pieces of blood formed on the surface of the peeling or repairing parts of the blood vessels in the cardiovascular system. In variable fluid dependence, thrombi are composed of insoluble fibrin, deposited platelets, accumulated white blood cells and trapped red blood cells. If thrombi form blockages in human blood vessels and interrupt blood flow, it is easy to cause life-threatening diseases such as myocardial infarction and stroke.

[0003] Currently, peripheral vascular thrombosis endangers millions of patients, mainly deep vein thrombosis (DVT) in the lower limbs and pulmonary embolism (PE). Thrombus aspiration is the main clinical treatment method.

[0004] During the use of the suction catheter, due to the different properties of the thrombus, large-load thrombus or old hard thrombus often blocks the tube opening of the suction catheter, making suction impossible. The operator needs to withdraw the suction catheter first and then re-deliver the instrument to resume the normal suction operation, which consumes the operator's time and energy and increases the difficulty of treatment.

[0005] To this end, the present invention proposes a thrombus separator and a thrombus removal system to solve the above-mentioned technical problems. Summary of the invention

[0006] The object of the present invention is to provide a thrombus separator and a thrombus removal system to solve the problems raised in the above-mentioned background technology.

[0007] To achieve the above object, the present invention provides the following technical solutions: In one aspect, a thrombus separator is provided, the thrombus separator comprising a separation component, a scraping component and an operation component; The separation component is provided with a spiral crushing strip on its surface, and the separation component is divided into a conical guide area, a thread penetration area and a columnar withdrawal area; The scraping assembly includes a cylindrical groove, an auxiliary scraper, and a scraper adjustment assembly. A moving opening is opened on the side of the cylindrical groove, the auxiliary scraper is located in the moving opening, the auxiliary scraper is connected to the scraper adjustment assembly, the scraper adjustment assembly is arranged inside the cylindrical groove, and a sealing plate is arranged at one end of the cylindrical groove; The columnar retraction area of ​​the separation component is connected to the bottom surface of the columnar groove, and the columnar groove is connected to the operating component through a sealing plate.

[0008] Preferably, the spiral crushing bar is a double thread with the same rotation direction, or the spiral crushing bar is a double thread with the opposite rotation direction; The angle between the spiral crushing bar and the axis of the separation component is 30-90 degrees; The cross section of the spiral crushing bar is a triangle or a parallelogram.

[0009] Preferably, a guide rod is provided at the front end of the tapered guide area of ​​the separation component, a guide spring ring is sleeved on the surface of the guide rod, and a developing block is provided at the front end of the guide rod.

[0010] Preferably, the scraper adjustment assembly includes a fixing ring, a traction assembly, a support assembly and a limit plate; The fixing ring is connected to the operating assembly via the first bearing, the fixing ring is connected to the limit plate via the traction assembly, and the limit plate is connected to the auxiliary scraper; The support components are respectively connected to the sealing plate and the limiting plate, and two groups of support components are provided, and the two groups of support components are symmetrically distributed about the limiting plate; The operating assembly can drive the fixed ring to push the auxiliary scraper to rotate in a direction perpendicular to the axis of the operating assembly through the traction assembly.

[0011] Preferably, the traction assembly comprises a traction plate, a rotating rod, and a rotating plate; the traction plate is arranged on a fixed ring, a rotating rod is arranged on the side of the traction plate, a rotating plate is sleeved on the rotating rod, the rotating plate is connected to a limit plate, and the limit plate is connected to an auxiliary scraper; The support assembly includes a support rod, a rotating bearing, and a vertical plate; the vertical plate is arranged on the sealing plate, a rotating bearing is arranged in a hole on the side of the vertical plate, a support rod is arranged on the inner ring surface of the rotating bearing, and the support rod is fixedly connected to the limit plate.

[0012] Preferably, the auxiliary scrapers are multiple and are evenly arranged on the circumference of the cylindrical groove, and the number of the moving openings matches the number of the auxiliary scrapers; The auxiliary scraper is fan-shaped, and two sides of the fan are respectively connected with a group of corrugated plates, and the two groups of corrugated plates are respectively connected to the moving port and the sealing plate; One end of the auxiliary scraper away from the scraper adjustment component is provided with a chamfer, and the chamfer is located on a side of the auxiliary scraper away from the operating component.

[0013] Preferably, the operating assembly includes a twisting rod and an adjusting rod; A movable through hole is provided inside the twisting rod, an end plate is provided at one end of the twisting rod, a through hole is provided at the center of the end plate, and the other end of the twisting rod is fixedly connected to a sealing plate, a through hole is provided at the center of the sealing plate; The adjusting rod passes through the end plate, the twisting rod and the sealing plate, is connected to the scraper adjusting assembly, and can adjust the rotation angle of the auxiliary scraper.

[0014] Preferably, the separation component and the auxiliary scraper are made of polymer materials.

[0015] Preferably, a snap-fit ​​fastener is disposed on the outside of the bottom surface of the cylindrical groove, and a snap-fit ​​groove is disposed at the columnar withdrawal area of ​​the separation component; the snap-fit ​​fastener is fastened to the snap-fit ​​groove.

[0016] On the other hand, a thrombus removal system is provided, comprising the thrombus separator as described above, and also comprising a hemostatic valve, a suction catheter and a negative pressure source; One end of the hemostatic valve is connected to the suction catheter, and the other end of the hemostatic valve is connected to the operating component of the thrombus separator. The thrombus separator runs through both ends of the hemostatic valve and the suction catheter; A branch pipe is arranged on the hemostatic valve, and the branch pipe is connected to a negative pressure source.

[0017] Compared with the prior art, the present invention has the following beneficial effects: The present invention proposes a thrombus separator and thrombus removal system. When in use, after the thrombus separator is pushed normally to the proximal end of the thrombus, the operator twists the pushing operation component while normally advancing the separation component. At this time, the separation component will be spirally embedded in the thrombus. Then, the thrombus can be broken or removed by rotating and withdrawing the separation component. At the same time, the thrombus remaining on the blood vessel wall can be scraped off by an auxiliary scraper, and the broken thrombus can be captured and extracted by the suction catheter in combination with a negative pressure source. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the device of the present invention; Figure 2 for Figure 1 The enlarged structural diagram at A in the middle; Figure 3 This is a schematic diagram of the structure of the structural separation component of the present invention; Figure 4 A partial cross-sectional view of a scraping assembly of the present invention; Figure 5 It is a partial cross-sectional view of the twisting rod of the present invention; Figure 6 This is a schematic diagram of the structure of the scraping component of the present invention; Figure 7 This is a schematic diagram of the structure of the present invention after the sealing plate is removed; Figure 8 for Figure 7 The enlarged structural diagram at B in the middle; Fig. 9 It is a side view of the structure of the present invention.

[0019] In the figure: 1. suction catheter; 2. branch tube; 3. twisting rod; 4. hemostatic valve; 5. scraping assembly; 6. cylindrical groove; 7. moving port; 8. auxiliary scraper; 9. fixing ring; 10. first bearing; 11. adjusting rod; 12. separation assembly; 13. same-rotation double threads; 14. guide rod; 15. guide spring ring; 16. clamping block; 17. sealing plate; 18. vertical plate; 19. rotating bearing; 20. support rod; 21. limit plate; 22. rotating plate; 23. corrugated plate; 24. traction plate; 25. rotating rod; 26. moving through hole; 27. end plate; 28. chamfer; 29. ​​clamping groove; 30. developing block; 31. conical guide area; 32. thread penetration area; 33. columnar withdrawal area; 34. counter-rotation double threads. DETAILED DESCRIPTION

[0020] In order to make the purpose and technical solution of the present invention clearly and completely described, and the advantages more clearly understood, the embodiments of the present invention are further described in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are part of the embodiments of the present invention, rather than all of the embodiments, and are only used to explain the embodiments of the present invention, and are not used to limit the embodiments of the present invention. All other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] Embodiment 1: The present invention provides a thrombus separator, please refer to Figure 1-Figure 9 The thrombus separator includes a separation component 12, a scraping component 5 and an operating component; a spiral crushing strip is arranged on the surface of the separation component 12, and the separation component 12 is divided into a conical guide area 31, a thread penetration area 32 and a columnar withdrawal area 33; the scraping component 5 includes a columnar groove 6, an auxiliary scraper 8, and a scraper adjustment component. A moving opening 7 is opened on the side of the columnar groove 6, and the auxiliary scraper 8 is located in the moving opening 7. The auxiliary scraper 8 is connected to the scraper adjustment component, and the scraper adjustment component is arranged inside the columnar groove 6. A sealing plate 17 is arranged at one end of the columnar groove 6; the columnar withdrawal area 33 of the separation component 12 is connected to the bottom surface of the columnar groove 6, and the columnar groove 6 is connected to the operating component through the sealing plate 17.

[0022] During use, after the thrombus separator is pushed normally to the proximal end of the thrombus, the operator twists the pushing operation component while normally advancing the separation component 12. At this time, the separation component 12 will be spirally embedded in the thrombus. The thrombus can then be broken or removed by rotating and withdrawing the separation component 12. At the same time, the auxiliary scraper 8 can be pushed by twisting the pushing operation component to scrape off the thrombus remaining on the blood vessel wall. In addition, if a thrombus is difficult to penetrate, the above steps can be repeated several times, and the stubborn thrombus can also be easily removed.

[0023] Embodiment 2: Based on Embodiment 1, in order to better break, cut or remove the thrombus, the spiral breaking strip is a co-rotation double thread 13, or the spiral breaking strip is a counter-rotation double thread 34; the angle between the spiral breaking strip and the axis of the separation component 12 is 30-90 degrees; the cross section of the spiral breaking strip is a triangle or a parallelogram; so as to facilitate the cleaning and processing of different thrombi. In order to facilitate the penetration of the thrombus and the real-time grasp of the position of the separator, the front end of the tapered guide area 31 of the separation component 12 is provided with a guide rod 14, the surface of the guide rod 14 is provided with a guide spring ring 15, and the front end of the guide rod 14 is provided with a developing block 30.

[0024] When in use, when the surface of the separation component 12 is set to the same-rotation double thread 13, the friction of the structure is small, the penetration ability is strong, and the penetration efficiency is high; when the surface of the separation component 12 is set to the counter-rotation double thread 34, the structure can penetrate the thrombus in both forward and reverse rotations, and the operator can operate conveniently and efficiently. In addition, three areas are set on the surface of the separation component 12, namely, a conical guide area 31, a thread penetration area 32 and a columnar withdrawal area 33. The conical guide area 31 mainly functions to achieve conical thrombus penetration and perform preliminary guiding positioning. The thread penetration area 32 mainly functions to penetrate and fix the thrombus by the forward and reverse rotation of the double thread. The main function of the columnar withdrawal area 33 is to penetrate and fix the thrombus. The main function is to provide a larger retraction force to break up the thrombus, and then the thrombus band can be broken or removed by withdrawing the separation component 12. In addition, the guide rod 14 and the guide spring coil 15 set at the front end of the separation component 12 can make the end face of the separation component softer and more elastic, so that the spring force can be used to facilitate the penetration of the thrombus. On the other hand, the guide spring coil 15 is made of metal material, so that development can be achieved. For better development effect, the development block 30 set on the end face of the guide rod 14 can also be used with special development materials to achieve better development effect, so that the specific position of the separation component 12 can be easily seen, which is convenient for the operator to observe and operate.

[0025] The angle between the spiral crushing strip and the axis of the separation component 12 is 30-90 degrees, so that when the operator rotates and pushes the operating component, the separation component 12 can better spirally embed into the thrombus, and at the same time maintain good adhesion with the thrombus, so that when the operating component is withdrawn, the thrombus can be removed together with the separation component 12; the cross-section of the spiral crushing strip is a triangle or a parallelogram, forming sharp edges and corners, so that the thrombus can be better cut and crushed during the process of the separation component 12 rotating and embedding into the thrombus. Furthermore, in order to avoid damage to the blood vessel wall, the separation component 12 and the auxiliary scraper 8 are made of polymer materials.

[0026] Preferably, a snap-fit ​​fastener 16 is provided on the outside of the bottom surface of the cylindrical groove 6, and a snap-fit ​​fastener 29 is provided at the columnar withdrawal area 33 of the separation component 12; the snap-fit ​​fastener 16 is fastened to the snap-fit ​​fastener 29, which facilitates disassembly and installation while being able to transmit the movement of the operating component to the separation component 12.

[0027] Embodiment three: On the basis of embodiment one or embodiment two, the scraper adjustment assembly includes a fixed ring 9, a traction assembly, a support assembly and a limit plate 21; the fixed ring 9 is connected to the operating assembly through the first bearing 10, the fixed ring 9 is connected to the limit plate 21 through the traction assembly, and the limit plate 21 is connected to the auxiliary scraper 8; the support assembly is respectively connected to the sealing plate 17 and the limit plate 21, and there are two groups of support assemblies, which are symmetrically distributed about the limit plate 21; the operating assembly can drive the fixed ring 9 to push the auxiliary scraper 8 to rotate in a direction perpendicular to the axis of the operating assembly through the traction assembly. The traction assembly includes a traction plate 24, a rotating rod 25, and a rotating plate 22; the traction plate 24 is arranged on the fixed ring 9, and a rotating rod 25 is arranged on the side of the traction plate 24, and the rotating plate 22 is sleeved on the rotating rod 25, and the rotating plate 22 is connected to the limit plate 21, and the limit plate 21 is connected to the auxiliary scraper 8; the support assembly includes a support rod 20, a rotating bearing 19, and a vertical plate 18; the vertical plate 18 is arranged on the sealing plate 17, and a rotating bearing 19 is arranged in a hole on the side of the vertical plate 18, and a support rod 20 is arranged on the inner ring surface of the rotating bearing 19, and the support rod 20 is fixedly connected to the limit plate 21.

[0028] Furthermore, there are multiple auxiliary scrapers 8, which are evenly arranged on the circumference of the cylindrical groove 6, and the number of movable openings matches the number of auxiliary scrapers 8; the auxiliary scraper 8 is fan-shaped, and a group of corrugated plates 23 are respectively connected to the two sides of the fan, and the two groups of corrugated plates 23 are respectively connected to the movable opening 7 and the sealing plate 17; the end of the auxiliary scraper 8 away from the scraper adjustment component is provided with a chamfer 28, and the chamfer is located on the side of the auxiliary scraper 8 away from the operating component.

[0029] When encountering a thrombus that is attached and fastened during use, the auxiliary scraper 8 can be used to scrape the thrombus. The chamfer 28 on the surface of the auxiliary scraper 8 can improve the scraping ability of the auxiliary scraper 8, so as to facilitate the separation component 12 to improve the ability to remove the thrombus. The scraper adjustment component can adjust the angle of the auxiliary scraper 8. The corrugated plate 23 that can be compressed and folded can help the auxiliary scraper 8 to move without affecting the angle adjustment of the auxiliary scraper 8. When the auxiliary scraper 8 is needed to scrape the thrombus, first, the operating component can be rotated, so that the operating component can be used to push the fixing ring 9 in cooperation with the first bearing 10, so that the rotation connection between the rotating plate 22 and the rotating rod 25 and the support rod 20 can be used to cooperate with the rotating bearing 19 to push the limit plate 21, so that the auxiliary scraper 8 can be adjusted in angle in the moving port 7, that is, the auxiliary scraper 8 can be rotated in a direction perpendicular to the axis of the operating component, so that the partially attached and fastened thrombus can be scraped conveniently through the tilt angle of the auxiliary scraper 8. When the scraping function is not activated, the auxiliary scraper 8 is folded toward the axis of the operating component to avoid scraping the blood vessel wall. When the scraping function is activated, the auxiliary scraper 8 is unfolded perpendicular to the axis of the operating component to scrape the thrombus on the blood vessel wall during the withdrawal of the operating component.

[0030] Embodiment 4: Based on Embodiment 1, 2 or 3, the operating component includes a twisting rod 3 and an adjusting rod 11; a movable through hole 26 is opened inside the twisting rod 3, an end plate 27 is set at one end of the twisting rod 3, a through hole is set at the center of the end plate 27, and the other end of the twisting rod 3 is fixedly connected to the sealing plate 17, and a through hole is opened at the center of the sealing plate 17; the adjusting rod 11 passes through the end plate 27, the twisting rod 3 and the sealing plate 17, the adjusting rod 11 is connected to the scraper adjustment component, and can adjust the rotation angle of the auxiliary scraper 8.

[0031] During actual use, after the separation component 12 is pushed to the proximal end of the thrombus by the twisting rod 3, the operator twists the twisting rod 3 while normally advancing the separation component 12. At this time, the separation component 12 will be spirally embedded in the thrombus. Next, the thrombus can be broken or removed by rotating and withdrawing the separation component 12. For the thrombus that is tightly attached and remains on the blood vessel wall, the fixing ring 9 can be pushed by rotating the adjusting rod 11 so that the auxiliary scraper 8 can be rotated and unfolded in a direction perpendicular to the axis of the operating component, so that the inclined auxiliary scraper 8 can be used to scrape the thrombus during the withdrawal of the operating component.

[0032] Embodiment 5: The present invention provides a thrombus removal system, comprising the thrombus separator described above, and also comprising a hemostatic valve 4, a suction catheter 1 and a negative pressure source; one end of the hemostatic valve 4 is connected to the suction catheter 1, and the other end of the hemostatic valve 4 is connected to the operating component of the thrombus separator, the thrombus separator passes through both ends of the hemostatic valve 4 and the suction catheter 1; a branch pipe 2 is provided on the hemostatic valve 4, and the branch pipe 2 is connected to the negative pressure source.

[0033] During actual use, one end of the suction catheter 1 enters the patient's blood vessel near the thrombus, and the other end of the suction catheter 1 is connected to one end of the hemostatic valve 4. The branch pipe on the hemostatic valve 4 is connected to the negative pressure source to provide negative pressure. The thrombus separator enters the suction catheter 1 from the other end of the hemostatic valve 4, and the separation component and scraping component of the thrombus separator enter the thrombus in the blood vessel through the suction catheter 1. The operating component of the thrombus separator is located outside the end of the hemostatic valve, which is convenient for the operator to operate; the operator delivers the separation component 12 to the proximal end of the thrombus through the operating component, and then spirally embeds the separation component 12 into the thrombus by rotating and pushing, and then breaks or removes the thrombus by rotating and withdrawing the separation component 12. At the same time, the auxiliary scraper 8 can be pushed by twisting the pushing operating component to scrape the thrombus remaining on the blood vessel wall, and the broken and scraped thrombus is immediately captured and extracted by the negative pressure source through the suction catheter 1.

[0034] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A thrombus separator, characterized in that: The thrombus separator comprises a separation component (12), a scraping component (5) and an operating component; The separation component (12) is provided with a spiral crushing strip on its surface, and the separation component (12) is divided into a conical guide area (31), a thread penetration area (32) and a columnar withdrawal area (33); The scraping assembly (5) comprises a cylindrical groove (6), an auxiliary scraper (8), and a scraper adjustment assembly. A movable opening (7) is provided on the side of the cylindrical groove (6). The auxiliary scraper (8) is located in the movable opening (7). The auxiliary scraper (8) is connected to the scraper adjustment assembly. The scraper adjustment assembly is arranged inside the cylindrical groove (6). A sealing plate (17) is provided at one end of the cylindrical groove (6). The columnar retraction area (33) of the separation component (12) is connected to the bottom surface of the columnar groove (6), and the columnar groove (6) is connected to the operating component via a sealing plate (17).

2. A thrombus separator according to claim 1, characterized in that: The spiral crushing bar is a double thread with the same rotation direction (13), or the spiral crushing bar is a double thread with the opposite rotation direction (34); The angle between the spiral crushing bar and the axis of the separation component (12) is 30-90 degrees; The cross section of the spiral crushing bar is a triangle or a parallelogram.

3. A thrombus separator according to claim 1, characterized in that: A guide rod (14) is provided at the front end of the tapered guide area (31) of the separation component (12), a guide spring ring (15) is sleeved on the surface of the guide rod (14), and a developing block (30) is provided at the front end of the guide rod (14).

4. A thrombus separator according to claim 1, characterized in that: The scraper adjustment assembly comprises a fixing ring (9), a traction assembly, a support assembly and a limit plate (21); The fixing ring (9) is connected to the operating assembly via the first bearing (10), the fixing ring (9) is connected to the limit plate (21) via the traction assembly, and the limit plate (21) is connected to the auxiliary scraper (8); The support components are respectively connected to the sealing plate (17) and the limiting plate (21), and two groups of support components are provided, and the two groups of support components are symmetrically distributed about the limiting plate (21); The operating assembly can drive the fixed ring (9) to push the auxiliary scraper (8) to rotate in a direction perpendicular to the axis of the operating assembly through the traction assembly.

5. A thrombus separator according to claim 4, characterized in that: The traction assembly comprises a traction plate (24), a rotating rod (25), and a rotating plate (22); the traction plate (24) is arranged on the fixed ring (9), a rotating rod (25) is arranged on the side of the traction plate (24), the rotating plate (22) is sleeved on the rotating rod (25), the rotating plate (22) is connected to the limit plate (21), and the limit plate (21) is connected to the auxiliary scraper (8); The support assembly comprises a support rod (20), a rotating bearing (19), and a vertical plate (18); the vertical plate (18) is arranged on the sealing plate (17); a hole is opened on the side of the vertical plate (18) to arrange the rotating bearing (19); a support rod (20) is arranged on the inner ring surface of the rotating bearing (19); and the support rod (20) is fixedly connected to the limit plate (21).

6. A thrombus separator according to claim 1, characterized in that: The auxiliary scrapers (8) are multiple and evenly arranged in the circumferential direction of the cylindrical groove (6), and the number of the moving openings matches the number of the auxiliary scrapers (8); The auxiliary scraper (8) is fan-shaped, and two sides of the fan-shaped scraper are respectively connected to a group of corrugated plates (23), and the two groups of corrugated plates (23) are respectively connected to the moving port (7) and the sealing plate (17); A chamfer (28) is provided at one end of the auxiliary scraper (8) away from the scraper adjustment assembly, and the chamfer is located on a side of the auxiliary scraper (8) away from the operating assembly.

7. The thrombus separator according to claim 1, characterized in that: The operating assembly comprises a twisting rod (3) and an adjusting rod (11); A movable through hole (26) is provided inside the twisting rod (3); an end plate (27) is provided at one end of the twisting rod (3); a through hole is provided at the center of the end plate (27); the other end of the twisting rod (3) is fixedly connected to a sealing plate (17); a through hole is provided at the center of the sealing plate (17); The adjustment rod (11) passes through the end plate (27), the twisting rod (3) and the sealing plate (17); the adjustment rod (11) is connected to the scraper adjustment assembly and is capable of adjusting the rotation angle of the auxiliary scraper (8).

8. The thrombus separator according to claim 1, characterized in that: The separation component (12) and the auxiliary scraper (8) are made of polymer materials.

9. The thrombus separator according to claim 1, characterized in that: A snap-fit ​​fastener (16) is provided on the outside of the bottom surface of the columnar groove (6), and a snap-fit ​​groove (29) is provided at the columnar retreat area (33) of the separation component (12); the snap-fit ​​fastener (16) is tightly connected to the snap-fit ​​groove (29).

10. A thrombus removal system, characterized in that: A thrombus separator comprising any one of claims 1 to 9, further comprising a hemostatic valve (4), a suction catheter (1) and a negative pressure source; One end of the hemostatic valve (4) is connected to the suction catheter (1), and the other end of the hemostatic valve (4) is connected to the operating component of the thrombus separator. The thrombus separator runs through both ends of the hemostatic valve (4) and the suction catheter (1); A branch pipe (2) is provided on the hemostatic valve (4), and the branch pipe (2) is connected to a negative pressure source.

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