Mechanical thrombectomy device with negative pressure auxiliary suction function

Abstract

The utility model relates to the technical field of devices for acute ischemic stroke diseases, and discloses a mechanical thrombectomy device with negative pressure auxiliary suction, which comprises a connecting tube, a fixing plate is slidably connected to the inner wall of the bottom side of the right end of the connecting tube, and a holding plate is fixedly connected to the bottom side of the left end of the connecting tube. An air bag bin is fixedly connected to the left end of the connecting pipe, a negative pressure pipe is fixedly connected to the inner wall of the air bag bin and penetrates through the air bag bin, connecting rings are fixedly connected to the bottom end of the fixing plate and the left end of the holding plate, adjusting rings are rotationally connected to the front ends of the connecting rings, and clamping assemblies are fixedly connected to the inner walls of the adjusting rings. The inner wall of the connecting tube is slidably connected with a suction tube. According to the thrombus aspirator, accurate control over thrombus can be achieved, it is guaranteed that the thrombus cannot fall off or move accidentally in the aspiration process, the fixing effect of the arc-shaped plate on the finger portion is achieved, and the situation that a doctor needs to spend extra strength to hold the thrombus aspirator when using the thrombus aspirator is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of devices for acute ischemic stroke, in particular to a mechanical thrombectomy device with negative pressure auxiliary suction. Background Art

[0002] Acute ischemic stroke is a cerebrovascular disease caused by cerebral vasospasm, thrombosis, embolus or arterial blockage. The mechanical thrombectomy device with negative pressure-assisted suction is a medical device used to treat acute ischemic stroke. It removes emboli from blood vessels by suction, thereby restoring blood flow.

[0003] When using the device to attract the patient's blood clots, negative pressure is usually used to guide and adsorb the blood clots. In order to ensure the fixation of the blood clots, the device needs to use negative pressure for a long time. Long-term use of negative pressure attraction can easily increase the patient's pain and discomfort, causing postoperative adverse reactions such as increased blood pressure, headaches, etc., creating an inconvenient burden. Summary of the invention

[0004] The purpose of the utility model is to solve the shortcomings existing in the prior art and to propose a mechanical thrombectomy device with negative pressure assisted suction, aiming to improve the postoperative burden caused by the device using negative pressure to clamp and fix the thrombus in order to maintain the attraction of the thrombus, as well as the problem of doctor's hand soreness caused by the need to exert force to hold the device to avoid slipping when using the device.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a mechanical thrombectomy device with negative pressure assisted suction, including a connecting tube, a fixing plate is slidably connected to the inner wall of the bottom side of the right end of the connecting tube, a holding plate is fixedly connected to the bottom side of the left end of the connecting tube, an airbag compartment is fixedly connected to the left end of the connecting tube, a negative pressure tube is fixedly connected to the inner wall of the airbag compartment and passes through, a connecting ring is fixedly connected to the bottom end of the fixing plate and the left end of the holding plate, an adjusting ring is rotatably connected to the front end of the connecting ring, a clamping assembly is fixedly connected to the inner wall of the adjusting ring, a suction tube is slidably connected to the inner wall of the connecting tube, and a negative pressure assembly is fixedly connected to the left side of the top end of the outer wall of the suction tube.

[0006] As a further description of the above technical solution:

[0007] The negative pressure assembly includes a connecting frame, the bottom end of the connecting frame is fixedly connected to the left side of the top end of the outer wall of the suction tube, the left end of the connecting frame is rotatably connected to an adjusting rod, the middle part of the adjusting rod body is rotatably connected to a fixing frame, the inner wall of the fixing frame is fixedly connected to a blocking tube, and the bottom end of the adjusting rod passes through the top end of the blocking tube and is fixedly connected to a valve plate.

[0008] As a further description of the above technical solution:

[0009] The clamping assembly includes a gear ring, the front end of which is fixedly connected to the rear end of the adjustment ring, the inner diameter of the gear ring is meshed with a plurality of transmission gears, the rear end of the transmission gear is fixedly connected to an arc plate, and the outer wall of the connecting ring is rotatably connected to a ratchet ring.

[0010] As a further description of the above technical solution:

[0011] The four sides of the outer wall of the right end of the connecting tube are rotatably connected with clamping claws, and the clamping claws are rotatably connected with a support plate at one opposite end, and the support plate is rotatably connected to the outer wall of the right end of the suction tube at one opposite end.

[0012] As a further description of the above technical solution:

[0013] The left end of the blocking tube is fixedly connected to the right end of the airbag compartment and penetrates through it, and the suction tube is slidably connected to the left end of the blocking tube.

[0014] As a further description of the above technical solution:

[0015] The outer wall of the left end of the valve plate is matched with the inner wall of the right end of the blocking pipe.

[0016] As a further description of the above technical solution:

[0017] The outer wall of the connecting ring is rotatably connected with a pawl corresponding to the outer diameter of the ratchet ring, the rear ends of the pawls are fixedly connected with torsion springs, and the rear ends of the torsion springs are fixedly connected to the outer wall of the connecting ring.

[0018] As a further description of the above technical solution:

[0019] The front end of the ratchet ring is fixedly connected to the rear end outer wall of the adjusting ring, and the rear end of the arc plate is fixedly connected to the rear end of the inner wall of the connecting ring.

[0020] The utility model has the following beneficial effects:

[0021] In the utility model, by using the combination of the suction tube, the connecting frame, the adjusting rod, the fixing frame, the blocking tube, the valve plate, the clamping claw and the supporting plate, the thrombus can be precisely controlled to ensure that the thrombus will not accidentally fall off or migrate during the suction process, thereby helping to ensure the safety and effectiveness of the operation, while avoiding pain and discomfort to the patient during the operation caused by long-term use of negative pressure suction, thereby improving the postoperative comfort of the patient wearing the device.

[0022] In the utility model, by using the adjustment ring, the gear ring, the transmission gear, the arc plate, the ratchet ring, the pawl and the torsion spring in combination, the arc plate has a fixing effect on the finger, which avoids the doctor's need to spend extra effort to hold the device when using the device, thereby avoiding the disadvantage of hand soreness caused by long-term use of the device and improving the comfort of the doctor when using the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a three-dimensional diagram of a mechanical thrombectomy device with negative pressure assisted suction proposed by the utility model;

[0024] Figure 2 A half-section diagram of a connecting tube of a mechanical thrombectomy device with negative pressure-assisted suction proposed by the utility model;

[0025] Figure 3 A half-section diagram of an airbag compartment of a mechanical thrombectomy device with negative pressure-assisted suction proposed by the utility model;

[0026] Figure 4 A half-section diagram of a blocked tube of a mechanical thrombectomy device with negative pressure-assisted suction proposed by the utility model;

[0027] Figure 5 This is a schematic diagram of the support plate structure of a mechanical thrombectomy device with negative pressure assisted suction proposed by the utility model;

[0028] Figure 6 A half-section diagram of an adjustment ring of a mechanical thrombectomy device with negative pressure-assisted suction proposed by the utility model;

[0029] Figure 7 This is a half-section view of the connecting ring of a mechanical thrombectomy device with negative pressure-assisted suction proposed by the utility model.

[0030] Legend:

[0031] 1. Connecting tube; 2. Fixing plate; 3. Holding plate; 4. Air bag compartment; 5. Negative pressure tube; 6. Connecting ring; 7. Adjusting ring; 8. Suction tube; 9. Connecting frame; 10. Adjusting rod; 11. Fixing frame; 12. Blocking tube; 13. Valve plate; 14. Clamping claw; 15. Support plate; 16. Gear ring; 17. Transmission gear; 18. Arc plate; 19. Ratchet ring; 20. Ratchet; 21. Torsion spring. DETAILED DESCRIPTION

[0032] The following will refer to the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0033] In order to further understand the content of the utility model, the utility model is described in detail with reference to the accompanying drawings.

[0034] Reference Figure 1-7The utility model provides an embodiment: a mechanical thrombectomy device with negative pressure assisted suction, including a connecting tube 1, a fixing plate 2 is slidably connected to the inner wall of the bottom side of the right end of the connecting tube 1, a holding plate 3 is fixedly connected to the bottom side of the left end of the connecting tube 1, an air bag compartment 4 is fixedly connected to the left end of the connecting tube 1, a negative pressure tube 5 is fixedly connected to the inner wall of the air bag compartment 4 and passes through, a connecting ring 6 is fixedly connected to the bottom end of the fixing plate 2 and the left end of the holding plate 3, an adjusting ring 7 is rotatably connected to the front end of the connecting ring 6, a clamping assembly is fixedly connected to the inner wall of the adjusting ring 7, a suction tube 8 is slidably connected to the inner wall of the connecting tube 1, a negative pressure assembly is fixedly connected to the left side of the top end of the outer wall of the suction tube 8, and the negative pressure tube 5 passes through the air bag compartment 4 to allow the suction tube 8 to absorb thrombus.

[0035] The negative pressure component includes a connecting frame 9, the bottom end of the connecting frame 9 is fixedly connected to the left side of the top end of the outer wall of the suction tube 8, the left end of the connecting frame 9 is rotatably connected to the adjusting rod 10, the middle part of the adjusting rod 10 is rotatably connected to the fixing frame 11, the inner wall of the fixing frame 11 is fixedly connected to the blocking tube 12, the bottom end of the adjusting rod 10 passes through the top of the blocking tube 12 and is fixedly connected to the valve plate 13, the four sides of the outer wall of the right end of the connecting tube 1 are rotatably connected to the clamping claws 14, the clamping claws 14 are rotatably connected to the support plate 15 at the opposite end, the support plate 15 is rotatably connected to the outer wall of the right end of the suction tube 8 at the opposite end, when the connecting ring 6 at the fixing plate 2 is pressed, the fixing plate 2 drives the suction tube 8 to make the connecting frame 9 deviate the adjusting rod 10, and the valve plate 13 at the adjusting rod 10 falls off from the blocking tube 12. The negative pressure in the negative pressure tube 5 enters the blocking tube 12 through the airbag chamber 4 and attracts the thrombus through the suction tube 8. At the same time, when the suction tube 8 is moved, the clamping claw 14 drives the support plate 15 to open. After the thrombus is attracted to the suction tube 8, the fixing plate 2 is released, and the suction tube 8 can be used to allow the clamping claw 14 to clamp the thrombus on the support plate 15, so as to achieve precise control of the thrombus and ensure that the thrombus will not accidentally fall off or move during the suction process, which helps to ensure the safety and effectiveness of the operation. At the same time, it avoids the pain and discomfort of the patient caused by long-term use of negative pressure suction during the operation, and improves the postoperative comfort of the patient. The left end of the blocking tube 12 is fixedly connected to the right end of the airbag chamber 4 and passes through it, and the suction tube 8 is slidably connected to the left end of the blocking tube 12 to facilitate the passage of negative pressure gas. The outer wall of the left end of the valve plate 13 fits with the inner wall of the right end of the blocking tube 12, so that the valve plate 13 can control the negative pressure gas in the blocking tube 12.

[0036] The clamping assembly includes a gear ring 16, the front end of which is fixedly connected to the rear end of the adjusting ring 7, the inner diameter of the gear ring 16 is meshed with a plurality of transmission gears 17, the rear end of the transmission gear 17 is fixedly connected to an arc plate 18, the outer wall of the connecting ring 6 is rotatably connected to a ratchet ring 19, the outer wall of the connecting ring 6 is rotatably connected to a pawl 20 corresponding to the outer diameter of the ratchet ring 19, the rear end of the pawl 20 is fixedly connected to a torsion spring 21, and the rear end of the torsion spring 21 is fixedly connected to the outer wall of the connecting ring 6. When using the device, the doctor places the thumb and index finger in the connecting ring 6, and then rotates the adjusting ring 7 to drive the ratchet ring 19 and the gear ring 16 to rotate, so that the gear ring 16 drives the transmission The moving gear 17 clamps the arc plate 18 on the doctor's fingers, and after the ratchet ring 19 stops rotating, the torsion spring 21 uses its own torque to fix the ratchet 20 in the ratchet ring 19, thereby maintaining the fixing effect of the arc plate 18 on the fingers, avoiding the doctor from spending extra effort to hold the device when using the device, thereby avoiding the disadvantage of hand soreness caused by long-term use of the device, and improving the comfort of the doctor using the device. The front end of the ratchet ring 19 is fixedly connected to the outer wall of the rear end of the adjustment ring 7, so that the adjustment ring 7 can drive the ratchet ring 19 to rotate, and the rear end of the arc plate 18 is fixedly connected to the rear end of the inner wall of the connecting ring 6, so that the arc plate 18 can rotate.

[0037] Working principle: First, when using the device, the doctor places the thumb and index finger in the connecting ring 6, and then rotates the adjusting ring 7 to drive the ratchet ring 19 and the gear ring 16 to rotate, so that the gear ring 16 drives the transmission gear 17 to clamp the arc plate 18 on the doctor's finger. After the ratchet ring 19 stops rotating, the torsion spring 21 uses its own torque to fix the ratchet 20 in the ratchet ring 19, thereby maintaining the fixing effect of the arc plate 18 on the finger, avoiding the doctor from spending extra effort to hold the device when using the device, thereby avoiding the disadvantage of hand soreness caused by long-term use of the device, and improving the comfort of the doctor using the device. When the connecting ring 6 at the fixing plate 2 is pressed, the fixing plate 2 drives the suction tube 8 to make the connecting frame 9 to make the adjusting rod 10 offset, so that the valve plate 13 at the adjusting rod 10 falls off from the blocking tube 12. The negative pressure in the negative pressure tube 5 enters the blocking tube 12 through the airbag chamber 4 and attracts the thrombus through the suction tube 8. At the same time, when the suction tube 8 is moved, the clamping claw 14 drives the support plate 15 to open. After the thrombus is attracted to the suction tube 8, the fixing plate 2 is released, and the suction tube 8 can be used to allow the clamping claw 14 to enable the support plate 15 to clamp the thrombus, thereby achieving precise control of the thrombus and ensuring that the thrombus will not accidentally fall off or move during the suction process, which helps to ensure the safety and effectiveness of the operation, while avoiding pain and discomfort in patients during surgery caused by long-term use of negative pressure suction, thereby improving the postoperative comfort of patients wearing the device.

[0038] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0039] 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 mechanical thrombectomy device with negative pressure assisted suction, comprising a connecting tube (1), characterized in that: The inner wall of the bottom side of the right end of the connecting tube (1) is slidably connected to a fixing plate (2), the bottom side of the left end of the connecting tube (1) is fixedly connected to a holding plate (3), the left end of the connecting tube (1) is fixedly connected to an air bag chamber (4), the inner wall of the air bag chamber (4) is fixedly connected to a negative pressure tube (5) and passes through, the bottom end of the fixing plate (2) and the left end of the holding plate (3) are both fixedly connected to a connecting ring (6), the front end of the connecting ring (6) is rotatably connected to an adjusting ring (7), the inner wall of the adjusting ring (7) is fixedly connected to a clamping component, the inner wall of the connecting tube (1) is slidably connected to a suction tube (8), and the left side of the outer wall top of the suction tube (8) is fixedly connected to a negative pressure component.

2. A mechanical thrombectomy device with negative pressure assisted suction according to claim 1, characterized in that: The negative pressure assembly comprises a connecting frame (9), the bottom end of the connecting frame (9) is fixedly connected to the left side of the top end of the outer wall of the suction tube (8), the left end of the connecting frame (9) is rotatably connected to an adjusting rod (10), the middle part of the adjusting rod (10) is rotatably connected to a fixing frame (11), the inner wall of the fixing frame (11) is fixedly connected to a blocking tube (12), and the bottom end of the adjusting rod (10) passes through the top end of the blocking tube (12) and is fixedly connected to a valve plate (13).

3. The mechanical thrombectomy device with negative pressure assisted suction according to claim 1, characterized in that: The clamping assembly comprises a gear ring (16), the front end of the gear ring (16) is fixedly connected to the rear end of the adjustment ring (7), the inner diameter of the gear ring (16) is meshingly connected to a plurality of transmission gears (17), the rear ends of the transmission gears (17) are fixedly connected to an arc plate (18), and the outer wall of the connecting ring (6) is rotatably connected to a ratchet ring (19).

4. The mechanical thrombectomy device with negative pressure assisted suction according to claim 2, characterized in that: The four sides of the outer wall of the right end of the connecting tube (1) are rotatably connected to clamping claws (14), and the opposite end of the clamping claws (14) is rotatably connected to a support plate (15), and the opposite end of the support plate (15) is rotatably connected to the outer wall of the right end of the suction tube (8).

5. The mechanical thrombectomy device with negative pressure assisted suction according to claim 2, characterized in that: The left end of the blocking tube (12) is fixedly connected to the right end of the airbag chamber (4) and penetrates through it, and the suction tube (8) is slidably connected to the left end of the blocking tube (12).

6. The mechanical thrombectomy device with negative pressure assisted suction according to claim 2, characterized in that: The outer wall of the left end of the valve plate (13) fits into the inner wall of the right end of the blocking tube (12).

7. The mechanical thrombectomy device with negative pressure assisted suction according to claim 3, characterized in that: The outer wall of the connecting ring (6) is rotatably connected to a ratchet pawl (20) corresponding to the outer diameter of the ratchet ring (19), the rear end of the ratchet pawl (20) is fixedly connected to a torsion spring (21), and the rear end of the torsion spring (21) is fixedly connected to the outer wall of the connecting ring (6).

8. The mechanical thrombectomy device with negative pressure assisted suction according to claim 3, characterized in that: The front end of the ratchet ring (19) is fixedly connected to the rear end outer wall of the adjustment ring (7), and the rear end of the arc plate (18) is fixedly connected to the rear end of the inner wall of the connection ring (6).

Images