Novel cerebral thrombosis extraction device

Abstract

The invention discloses a novel cerebral thrombosis extraction device, and relates to the technical field of surgical instruments. The device comprises a guide pipe, a mounting seat is fixedly mounted at the front end of the guide pipe, a grip is arranged on the front side of the mounting seat, a fixing column is fixedly mounted between the peripheries of the sides, adjacent to the grip, of the mounting seat, a thin wire penetrates through the guide pipe and the grip, and a drill rod is fixedly mounted at the rear end of the thin wire. A conical spring is fixedly mounted on the outer side of the drill rod on the rear side of the thin wire, a rotary advancing assembly is arranged in the grip, and a suction pipe is fixedly mounted on the outer side of the mounting seat. The thrombus can be directly and stably captured by the drill rod and the conical spring from one side of the thrombus, the operation is more convenient, and meanwhile, the conical spring cannot be attached to the inner wall of a blood vessel, so that the blood vessel cannot be damaged in the pulling process, the thrombus can be continuously taken out, a filament does not need to be repeatedly inserted, and the operation is more convenient. And the working intensity of thrombus extraction operation is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of surgical instruments, and in particular to a novel cerebral thrombosis removal device. Background Art

[0002] Cerebral thrombosis refers to a disease in which cerebral arteries are blocked and blood clots are formed, resulting in insufficient blood supply to the brain. In the surgical treatment of cerebral thrombosis, a catheter can be inserted into the blocked artery through dedicated surgical instruments, and then the blood clot formed in the blood vessel can be removed to clear the blood vessel and achieve the treatment effect.

[0003] However, the existing cerebral thrombosis removal device still has the following defects during use:

[0004] 1. Existing cerebral thrombus removal devices do not effectively capture thrombi, and direct suction is likely to leave residues. Existing thrombus removal devices first pass a filament through the thrombus, expand the side where the filament passes, and then push the thrombus as the filament is pulled out. However, the operation is more complicated, and the expanded filament adheres to the inner wall of the blood vessel, which is easy to damage the blood vessel during the pulling process.

[0005] 2. During the thrombus removal process, the existing cerebral thrombus removal device first captures the thrombus and then pulls it out with a thin wire. Therefore, one insertion of the thin wire can only remove a single thrombus. If you want to continue thrombus removal, you need to reinsert the thin wire, which increases the workload of the thrombus removal operation. Summary of the invention

[0006] The purpose of the present invention is to solve the problem that the thrombus cannot be effectively captured, the method of first passing the filament and then expanding it is not only more complicated to operate, but also easy to damage the blood vessel during the pulling process, and in the process of one filament insertion, continuous thrombus removal cannot be performed, and the filament needs to be repeatedly pulled out and inserted, which increases the workload of the thrombus removal operation. The present invention provides a new cerebral thrombus removal device.

[0007] In order to achieve the above-mentioned purpose, the present invention specifically adopts the following technical solutions:

[0008] A novel cerebral thrombosis removal device comprises a catheter, a mounting seat is fixedly installed at the front end of the catheter, a handle is provided on the front side of the mounting seat, a fixing column is fixedly installed between the mounting seat and the outer periphery of one side adjacent to the handle, a filament is passed through the inside of the catheter and the handle, a drill rod is fixedly installed at the rear end of the filament, a conical spring is fixedly installed on the outside of the drill rod on the rear side of the filament, a rotating and advancing component is provided inside the handle, the rotating and advancing component is used to drive the filament to rotate and move backward at the same time, and a suction tube is fixedly installed on the outside of the mounting seat.

[0009] Furthermore, there are four fixing columns in total, which are evenly distributed around the periphery between the mounting seat and the handle, and the mounting seat and the handle are fixed by the fixing columns.

[0010] Furthermore, a bell mouth is provided inside the rear side of the conduit, and the inner diameter of the bell mouth is larger than the minimum diameter of the front side of the conical spring, so that the conical spring can be retracted into the conduit through the bell mouth after being pulled forward.

[0011] Furthermore, a control valve is provided on one side of the suction tube away from the mounting seat, and a suction pump can be plugged into the other side of the control valve to suction the thrombus that enters the catheter.

[0012] Furthermore, the rotating and advancing component includes a rotating drum, the internal limit rotation connection of the rear side of the handle is connected to the rotating drum, the rear end of the rotating drum extends backward to the rear side of the handle, the rear end of the rotating drum is fixedly installed with a swivel, the swivel is wrapped around the outer side of the mounting seat, and is connected to the mounting seat for limited rotation, the inner part of the middle part of the rotating drum is evenly fixed with mounting blocks, the number of the mounting blocks is six, and they are evenly distributed inside the middle part of the rotating drum, the outer side of the mounting block is internally limited and connected to a gear, the edge of the gear extends outward to the outside of the rotating drum, the inner side of the mounting block is internally limited and connected to a traveling wheel, pulleys are fixedly installed on both sides of the gear and the traveling wheel, and a belt is connected for transmission between the pulleys; an internal threaded ring is fixedly installed on the inner side of the handle, the internal threaded ring is located on the outer side of the gear, and is meshed with all the gears, so that in the process of the rotating drum driving the gears to rotate, the gears can be rotated synchronously by meshing with the internal threaded ring.

[0013] Furthermore, the outer diameter of the rotating ring is larger than the outer diameter of the handle, and anti-slip grooves are provided on the outer periphery of the rotating ring, so after holding the handle, the rotating ring can be driven to rotate by fingers.

[0014] Furthermore, grooves adapted to the filaments are opened on the periphery of the traveling wheel, and the filaments pass through the middle of the evenly distributed traveling wheel, and the traveling wheel and the filaments are in squeeze contact, so that when the traveling wheel follows the rotation of the drum, the filaments can be driven to rotate, and when the traveling wheel rotates synchronously, the filaments can be driven to move forward and backward.

[0015] The beneficial effects of the present invention are as follows:

[0016] 1. The present invention, through the cooperation of the drill rod and the conical spring at the rear side of the filament, utilizes the rotation of the drill rod and the conical spring during the movement process, so that the drill rod and the conical spring can directly and stably capture the thrombus from one side of the thrombus, and then pull it out, which is more convenient to operate. At the same time, the conical spring will not adhere to the inner wall of the blood vessel, so it will not cause damage to the blood vessel during the pulling process.

[0017] 2. The present invention, through the cooperation between the conical spring and the trumpet mouth at the rear side of the catheter, can pull the conical spring back into the catheter, so that the thrombus can be squeezed and broken when being pulled into the catheter, and then suctioned through the suction tube. After the suction is completed, the thrombus can be continuously removed, thereby realizing continuous removal of the thrombus, without the need for repeated insertion of the filament, and reducing the workload of the thrombectomy operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0019] Figure 2 It is a schematic diagram of the rear three-dimensional structure of the present invention;

[0020] Figure 3 It is a schematic diagram of the rear side cross-sectional stereoscopic structure of the present invention;

[0021] Figure 4 It is a schematic diagram of the rear side cross-sectional stereoscopic structure of the conical spring of the present invention when it is retracted;

[0022] Figure 5 It is a schematic diagram of the front three-dimensional structure of the present invention;

[0023] Figure 6 It is a schematic diagram of the front side sectional stereoscopic structure of the present invention;

[0024] Figure 7 It is an exploded view of the front side cross-sectional stereoscopic structure of the present invention;

[0025] Figure 8 It is a schematic diagram of the three-dimensional structure of the filament and the rotating traveling assembly of the present invention;

[0026] Fig. 9 It is a schematic diagram of the cross-sectional three-dimensional structure of the rotary traveling assembly of the present invention;

[0027] Fig.10 It is a schematic diagram of the partial three-dimensional structure of the rotating and traveling component of the present invention.

[0028] Figure numerals: 1. catheter; 11. bell mouth; 2. mounting seat; 3. handle; 4. fixing column; 5. filament; 6. drill rod; 7. conical spring; 8. rotating travel assembly; 81. rotating drum; 82. swivel; 83. mounting block; 84. gear; 85. travel wheel; 86. pulley; 87. belt; 88. internal threaded ring; 9. suction tube. DETAILED DESCRIPTION

[0029] To make the purpose, technical solution and advantages of the embodiments of the present invention more clear, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0030] A novel cerebral thrombus removal device according to a preferred embodiment of the present invention will be described in detail below. Figure 1-10 As shown, a novel cerebral thrombus removal device comprises a catheter 1, a mounting seat 2 is fixedly installed at the front end of the catheter 1, a handle 3 is arranged on the front side of the mounting seat 2, a fixing column 4 is fixedly installed between the outer peripheries of the mounting seat 2 and the handle 3 on one side adjacent to the mounting seat 2, and there are four fixing columns 4 in total, which are evenly distributed on the outer peripheries between the mounting seat 2 and the handle 3, the mounting seat 2 and the handle 3 are fixed by the fixing column 4, a filament 5 is penetrated inside the catheter 1 and the handle 3, a drill rod 6 is fixedly installed at the rear end of the filament 5, a conical spring 7 is fixedly installed on the outer side of the drill rod 6 on the rear side of the filament 5, a rotating and advancing component 8 is arranged inside the handle 3, the rotating and advancing component 8 is used to drive the filament 5 to rotate and move backward at the same time, a suction tube 9 is fixedly installed on the outer side of the mounting seat 2, a control valve is arranged on the side of the suction tube 9 away from the mounting seat 2, and a suction pump can be plugged into the other side of the control valve to suction the thrombus entering the catheter 1.

[0031] A bell mouth 11 is provided inside the rear side of the conduit 1 , and the inner diameter of the bell mouth 11 is larger than the minimum diameter of the front side of the conical spring 7 , so that the conical spring 7 can be retracted into the conduit 1 through the bell mouth 11 after being pulled forward.

[0032] The rotating and advancing component 8 includes a rotating drum 81, which is connected to the rotating drum 81 in an internal limited rotation manner on the rear side of the handle 3. The rear end of the rotating drum 81 extends rearward to the rear side of the handle 3. A swivel 82 is fixedly installed on the rear end of the rotating drum 81. The swivel 82 is wrapped around the outer side of the mounting seat 2 and is connected to the mounting seat 2 in a limited rotation manner. The outer diameter of the swivel 82 is larger than the outer diameter of the handle 3, and the outer periphery of the swivel 82 is provided with anti-slip grooves. Therefore, after holding the handle 3, the swivel 82 can be driven to rotate by fingers.

[0033] The middle part of the rotating drum 81 is evenly fixed with mounting blocks 83. There are six mounting blocks 83, which are evenly distributed inside the middle part of the rotating drum 81. The outer side of the mounting block 83 is rotatably connected to a gear 84. The edge of the gear 84 extends outward to the outside of the rotating drum 81. The inner side of the mounting block 83 is rotatably connected to a traveling wheel 85. The periphery of the traveling wheel 85 is provided with a groove adapted to the filament 5. The filament 5 passes through the middle of the evenly distributed traveling wheels 85, and the traveling wheels 85 are in squeeze contact with the filament 5. Therefore, when the traveling wheels 85 rotate with the rotating drum 81, the filament 5 can be driven to rotate, and when the traveling wheels 85 rotate synchronously, the filament 5 can be driven to move forward and backward.

[0034] Pulleys 86 are fixedly installed on both sides of the gear 84 and the traveling wheel 85, and a belt 87 is connected between the pulleys 86 for transmission. An internal threaded ring 88 is fixedly installed on the inner side of the handle 3, and the internal threaded ring 88 is located on the outer side of the gear 84 and meshes with all the gears 84. Therefore, in the process of the rotating drum 81 driving the gear 84 to rotate, the gear 84 can rotate synchronously by utilizing the mutual meshing of the gear 84 and the internal threaded ring 88.

[0035] The working principle of the present invention is:

[0036] When a thrombectomy is required, the sheath is first inserted into the artery where the thrombectomy is required through the guide wire. After the guide wire is removed, the catheter 1 is inserted into the blood vessel through the sheath. When inserted, the drill rod 6 and the conical spring 7 are located inside the catheter 1, so they do not affect the movement of the catheter 1 in the blood vessel.

[0037] After the rear end of the catheter 1 is moved to the thrombus by pushing the catheter 1, the handle 3 is held and the thumb is used to drive the rotating ring 82 to rotate, thereby driving the rotating drum 81 to rotate at the rear side of the handle 3. In the process of the rotating drum 81 rotating and driving the gear 84 to rotate, the gear 84 is meshed with the outer internal threaded ring 88, so that the gear 84 can rotate itself during the rotation, thereby driving the pulleys 86 on both sides to rotate. The transmission connection of the belt 87 between the gear 84 and the pulleys 86 on both sides of the traveling wheel 85 can also drive the traveling wheel 85 to rotate in the same direction at the same time, thereby driving the filament 5 passing through the middle to move backward, so that the filament 5 drives the drill rod 6 and the conical spring 7 to move to the rear side of the catheter 1.

[0038] The rear ends of the drill rod 6 and the conical spring 7 are brought into contact with the thrombus, and then the filament 5 is continued to be driven to push the drill rod 6 and the conical spring 7 to move backward. In the process of movement, as the mounting block 83 and the traveling wheel 85 rotate with the rotating drum 81, the traveling wheel 85 can also drive the filament 5 to rotate, thereby driving the drill rod 6 and the conical spring 7 to rotate, so that the drill rod 6 and the conical spring 7 can also rotate during the process of moving backward, so that the drill rod 6 can drill into the central interior of the thrombus, and the conical spring 7 can also be screwed into the thrombus, and the drill rod 6 can better wrap and capture the thrombus, and then the filament 5 on the rear side of the handle 3 is directly pulled to bring the thrombus to the center of the thrombus. The movable drill rod 6 and the conical spring 7 move forward, thereby driving the captured thrombus to move forward, and by utilizing the cooperation between the front side of the conical spring 7 and the trumpet mouth 11 on the rear side of the catheter 1, the conical spring 7 can be retracted into the catheter 1, and the thrombus can be pulled into the catheter 1. During the retraction of the conical spring 7, the thrombus can be broken up by cooperating with the drill rod 6, and then the suction pump is used to make the suction tube 9 suck the inside of the catheter 1, and then the thrombus pulled into the catheter 1 is sucked out from the catheter 1, and then the catheter 1 is continued to be pushed to move in the blood vessel to complete the continuous removal of the thrombus. After the thrombus is removed, the catheter 1 and the sheath can be removed.

[0039] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A novel cerebral thrombus removal device, comprising a catheter (1), characterized in that: A mounting seat (2) is fixedly mounted at the front end of the catheter (1), a handle (3) is arranged at the front side of the mounting seat (2), a fixing column (4) is fixedly mounted between the outer periphery of one side adjacent to the mounting seat (2) and the handle (3), a filament (5) passes through the interior of the catheter (1) and the handle (3), a drill rod (6) is fixedly mounted at the rear end of the filament (5), a conical spring (7) is fixedly mounted on the outer side of the drill rod (6) on the rear side of the filament (5), a rotating and advancing component (8) is arranged inside the handle (3), and the rotating and advancing component (8) is used to drive the filament (5) to rotate and move toward the rear side at the same time, and a suction tube (9) is fixedly mounted on the outer side of the mounting seat (2).

2. The novel cerebral thrombus removal device according to claim 1 is characterized in that: There are four fixing columns (4) in total, which are evenly distributed around the periphery between the mounting seat (2) and the handle (3). The mounting seat (2) and the handle (3) are fixed via the fixing columns (4).

3. The novel cerebral thrombus removal device according to claim 1 is characterized in that: A bell mouth (11) is provided inside the rear side of the conduit (1), and the inner diameter of the bell mouth (11) is larger than the minimum diameter of the front side of the conical spring (7).

4. The novel cerebral thrombus removal device according to claim 1 is characterized in that: A control valve is provided on one side of the suction pipe (9) away from the mounting seat (2), and a suction pump can be plugged into the other side of the control valve.

5. The novel cerebral thrombus removal device according to claim 1 is characterized in that: The rotating travel assembly (8) comprises: A rotating cylinder (81), the internal limit rotation connection of the rear side of the handle (3) is connected to the rotating cylinder (81), and the rear end of the rotating cylinder (81) extends backward to the rear side of the handle (3); A swivel (82), wherein the rear end of the rotating drum (81) is fixedly mounted with a swivel (82), the swivel (82) being wrapped around the outside of the mounting seat (2) and being connected to the mounting seat (2) in a limited rotation manner; A mounting block (83), the mounting block (83) being evenly and fixedly mounted inside the middle of the rotating drum (81); A gear (84), the outer side of the mounting block (83) is internally limited and rotatably connected with the gear (84), and the edge of the gear (84) extends outward to the outer side of the rotating drum (81); A traveling wheel (85), the inner side of the mounting block (83) is internally connected to the traveling wheel (85) for limited rotation; A pulley (86), wherein pulleys (86) are fixedly mounted on both sides of the gear (84) and the traveling wheel (85); A belt (87), wherein the pulleys (86) are connected to each other in a transmission manner. An internal thread ring (88) is fixedly mounted on the inner side of the handle (3), and the internal thread ring (88) is located on the outer side of the gear (84) and meshes with all the gears (84).

6. The novel cerebral thrombus removal device according to claim 5 is characterized in that: The outer diameter of the rotating ring (82) is greater than the outer diameter of the handle (3), and anti-slip grooves are provided on the periphery of the rotating ring (82).

7. The novel cerebral thrombus removal device according to claim 5 is characterized in that: The number of the mounting blocks (83) is six and they are evenly distributed inside the middle of the drum (81).

8. The novel cerebral thrombus removal device according to claim 5 is characterized in that: The outer periphery of the traveling wheel (85) is provided with grooves adapted to the filaments (5), the filaments (5) pass through the middle of the evenly distributed traveling wheels (85), and the traveling wheels (85) and the filaments (5) are in extrusion contact.

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