Cerebrovascular embolism interventional thrombectomy device

Abstract

The utility model belongs to the technical field of medical instruments, and particularly relates to a cerebrovascular embolism interventional thrombectomy device which comprises a tube body, and a guide-in rod is connected to the tube body in a sliding mode. One end of the lead-in rod is fixedly connected with a rear air bag capable of extending into the tube body to be hidden; a front air bag is arranged at one end, close to the rear air bag, of the tube body; a one-way valve is arranged at the end, close to the front air bag, of the inner wall of the tube body; a conical head is arranged at the end, close to the rear air bag, of the guide-in rod and arranged on the side, away from the front air bag, of the rear air bag. The interventional thrombectomy device effectively solves the problem that an existing interventional thrombectomy device is poor in cleaning effect.

Description

Technical Field

[0001] The utility model belongs to the technical field of medical devices, and in particular relates to an interventional thrombectomy device for cerebral vascular embolism. Background Art

[0002] Cerebral vascular embolism generally refers to cerebral thrombosis, which is caused by atherosclerosis of the main cerebral artery or cortical branch coronary artery, leading to vascular thickening, lumen stenosis occlusion and thrombosis, resulting in a series of symptoms such as reduced local blood flow or interruption of blood supply to the brain, ischemia and hypoxic necrosis of brain tissue. The thrombus can be removed using the corresponding interventional thrombectomy device.

[0003] For example, Patent No.: 202221639246.X discloses an interventional thrombectomy device for cerebral vascular embolism. When working, the thrombectomy device is first driven by the guide head 207 to move to the position where the thrombus is in the blood vessel. Since the thrombectomy device is small and fine, it is easy to move in the blood vessel. Then, the filter B204 moves with the cylinder B205 and the cylinder A203 to the position corresponding to the thrombus in the blood vessel, and then the hose A302, the hose B304 and the hose C306 are used to fill the airbags A301, B303 and C305 with gas, so that the airbags A301, B303 and C305 gradually become larger, and then the filter A202, the filter B204 and the filter C206 are moved with the cylinder A3 01. Airbag B303 and airbag C305 expand and spread until filter B204 contacts the thrombus in the blood vessel. Filter B204 contacts the thrombus, which facilitates the thrombus to adhere to filter B204, and then causes airbags A301, B303 and C305 to become smaller. At this time, the thrombus removal device can be slowly withdrawn. If the thrombus is separated from filter B204, filter A202 or filter C206 can effectively intercept it, so that the thrombus can be adhered to filter A202 or filter C206 again, thereby reducing the possibility of thrombus dispersion and the harm to the patient when the thrombus is lost and extracted again, thereby improving the safety and efficiency of the patient and facilitating the smooth thrombus removal.

[0004] That is, the blood clot is cleared by cooperating with the air bag and the filter. However, during actual use, when the blood clot on the filter contacts the blood vessel wall, it will inevitably fall off and then stick to the blood vessel wall, causing the blood clot to separate and escape through the filter, affecting the effect of interventional thrombectomy. Utility Model Content

[0005] In view of the above situation, in order to overcome the defects of the prior art, the utility model provides an interventional thrombectomy device for cerebral vascular embolism, which effectively solves the problem of poor cleaning effect of the prior interventional thrombectomy device.

[0006] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme: an interventional thrombectomy device for cerebral vascular embolism, comprising a tube body, on which is a guide rod slidably connected; one end of the guide rod is fixedly connected to a rear airbag that can be extended into the tube body and hidden, and the end of the tube body close to the rear airbag is provided with a front airbag; the end of the tube body away from the front airbag is provided with a connecting tube, and the end of the inner wall of the tube body close to the front airbag is provided with a one-way valve; the end of the guide rod close to the rear airbag is provided with a conical head, and the conical head is provided on the side of the rear airbag away from the front airbag.

[0007] Furthermore, the introduction rod is provided with a through hole, and a rear air pipe connected to the rear airbag is passed through the through hole.

[0008] Furthermore, a front air pipe communicating with the front airbag is provided in the tube body.

[0009] Furthermore, guide rings corresponding to the introduction rods are evenly distributed in the tube body along the length direction.

[0010] Furthermore, a plurality of fixing rods fixedly connected to the inner wall of the tube body are evenly distributed along the circumference of the guide ring.

[0011] Furthermore, the diameter of the bottom surface of the conical head is greater than the diameter of the inner wall of the tube body.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] When the utility model is in use, when removing the thrombus, the front airbag and the rear airbag cooperate to surround the thrombus, and the front airbag cooperates with the suction device to comprehensively move the thrombus into the tube body; after the thrombus is removed, the one-way valve can effectively prevent the thrombus in the tube body from flowing back into the blood vessel, and the front airbag is extended into the tube body and the conical head is used to block the tube body to prevent the thrombus in the tube body from flowing out, thereby improving the effect of the present application on clearing the thrombus. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the structure of the utility model;

[0015] Figure 2 For the utility model Figure 1 A magnified schematic diagram of the middle A area;

[0016] In the figure: 1, tube body, 2, connecting tube, 3, introduction rod, 4, rear air pipe, 5, front air pipe, 6, front air bag, 7, rear air bag, 8, conical head, 9, one-way valve, 10, guide ring, 11, fixing rod. DETAILED DESCRIPTION

[0017] A cerebrovascular embolism interventional thrombectomy device, such as Figure 1 and Figure 2As shown, it includes a tube body 1, on which is slidably connected a guide rod 3; one end of the guide rod 3 is fixedly connected to a rear airbag 7 which can be inserted into the tube body 1 and hidden, and the end of the tube body 1 close to the rear airbag 7 is provided with a front airbag 6; the end of the tube body 1 away from the front airbag 6 is provided with a connecting tube 2, and the end of the inner wall of the tube body 1 close to the front airbag 6 is provided with a one-way valve 9; the end of the guide rod 3 close to the rear airbag 7 is provided with a conical head 8, and the conical head 8 is provided on the side of the rear airbag 7 away from the front airbag 6.

[0018] When the utility model is in use, the front airbag 6 in the present application is moved to the position of the thrombus through the tube body 1, and the introduction rod 3 slides along the tube body 1 to make the conical head 8 drive the rear airbag 7 to move to the other side of the thrombus. At this time, the front airbag 6 and the rear airbag 7 are in a state to be inflated; after the rear airbag 7 moves to the position, the front airbag 6 and the rear airbag 7 are inflated, so that the thrombus is wrapped between the front airbag 6 and the rear airbag 7, and the suction device is connected through the connecting tube 2. The suction device slowly sucks the thrombus into the tube body 1 through the connecting tube 2 and the tube body 1, and the thrombus is sucked out. Move to the side of the one-way valve 9 away from the front airbag 6 to prevent the thrombus from flowing back into the blood vessel; at the same time, pull the rear airbag 7 through the introduction rod 3 to make the thrombus flow completely into the tube body 1; when the rear airbag 7 contacts the tube body 1, stop pulling the introduction rod 3, stop the suction device for suction, and then make the front airbag 6 and the rear airbag 7 smaller, and pull the rear airbag 7 again to make the rear airbag 7 extend into the tube body 1, block the tube body 1, and prevent the thrombus in the tube body 1 from flowing out, thereby improving the effect of the present application on thrombus clearing.

[0019] Furthermore, the introduction rod 3 is provided with a through hole, and a rear air pipe 4 connected to the rear air bag 7 is passed through the through hole; the rear air bag 7 is inflated and deflated through the rear air pipe 4.

[0020] Furthermore, a front air tube 5 connected to the front air bag 6 is provided in the tube body 1 , and the front air bag 6 is inflated and deflated through the front air tube 5 .

[0021] Furthermore, guide rings 10 corresponding to the introduction rod 3 are evenly distributed inside the tube body 1 along the length direction; multiple fixing rods 11 fixed to the inner wall of the tube body 1 are evenly distributed along the circumference of the guide ring 10; the guide ring 10 cooperates with the guide rod to guide the introduction rod 3, thereby improving the stability of the introduction rod 3.

[0022] Furthermore, the diameter of the bottom surface of the conical head 8 is larger than the diameter of the inner wall of the tube body 1 , so that after the thrombus is removed, the conical head 8 performs a second sealing after the rear airbag 7 seals the tube body 1 once, thereby improving the sealing effect of the tube body 1 .

Claims

1. A cerebrovascular embolism interventional thrombectomy device, characterized in that: The invention comprises a tube body (1), on which an introduction rod (3) is slidably connected; one end of the introduction rod (3) is fixedly connected to a rear airbag (7) which can be inserted into the tube body (1) and hidden; the end of the tube body (1) close to the rear airbag (7) is provided with a front airbag (6); the end of the tube body (1) far from the front airbag (6) is provided with a connecting tube (2); the end of the inner wall of the tube body (1) close to the front airbag (6) is provided with a one-way valve (9); the end of the introduction rod (3) close to the rear airbag (7) is provided with a conical head (8), and the conical head (8) is provided on the side of the rear airbag (7) far from the front airbag (6).

2. The cerebrovascular embolism interventional thrombectomy device according to claim 1, characterized in that: The introduction rod (3) is provided with a through hole, and a rear air pipe (4) communicating with the rear air bag (7) is passed through the through hole.

3. The cerebrovascular embolism interventional thrombectomy device according to claim 1, characterized in that: The tube body (1) is provided with a front air pipe (5) which is in communication with the front air bag (6).

4. The cerebrovascular embolism interventional thrombectomy device according to claim 1, characterized in that: Guide rings (10) corresponding to the introduction rods (3) are evenly distributed in the tube body (1) along the length direction.

5. The cerebrovascular embolism interventional thrombectomy device according to claim 4, characterized in that: The guide ring (10) is evenly distributed along the circumference with a plurality of fixing rods (11) fixedly connected to the inner wall of the tube body (1).

6. The cerebrovascular embolism interventional thrombectomy device according to claim 1, characterized in that: The diameter of the bottom surface of the conical head (8) is greater than the diameter of the inner wall of the tube body (1).

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