Thrombus aspiration thrombolysis protection method

Abstract

The invention discloses a thrombus aspiration thrombolysis protection method, and relates to the technical field of medical equipment. The method comprises the following steps: S1, injection subcutaneous anesthesia; S2, thrombus suction; and S3, thrombus thrombolysis. According to the thrombus aspirator, through cooperation of the flow channel control assembly, the push-pull mechanism and the power switching assembly, the flow channel control assembly controls opening and closing of the cavity channel, the power switching assembly controls the push-pull mechanism to act on the aspiration tank or the injection tank, and in the thrombus aspiration process, thrombus can be aspirated into the aspiration tank through a piston disc in the push-pull mechanism; in the thrombus thrombolysis process, a thrombolysis medicament in the injection tank can be extruded through the piston disc in the push-pull mechanism, and the thrombolysis medicament is injected into a thrombus section of a blood vessel through the catheter, so that thrombus suction and thrombolysis operations in the thrombus treatment process are conveniently realized, and the convenience of the thrombus suction operation and the thrombolysis operation is effectively improved; and the operation intensity of medical personnel is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and specifically to a thrombus aspiration and thrombolysis protection method. Background Art

[0002] Thrombus aspiration refers to using special instruments such as thrombus aspiration catheters or thrombolysis devices to remove thrombi in arteries or veins. This technique aims to quickly restore blood circulation and prevent tissue damage or organ failure;

[0003] Thrombus thrombolysis is a treatment method that injects specific thrombolytic drugs into the body through intravenous injection to dissolve the thrombi blocking blood vessels;

[0004] However, there are still some deficiencies in the processes of thrombus aspiration and thrombolysis:

[0005] When performing interventional treatment of thrombi, it is usually necessary to use a syringe to aspirate thrombi and use a syringe to inject thrombolytic drugs into the thrombus segment of the blood vessel to dissolve the thrombi. Since both treatment processes require manual operation of the syringe, the thrombus aspiration and thrombolysis operations are not convenient, and the treatment work intensity is relatively high.

[0006] In view of the above problems, the inventor proposes a thrombus aspiration and thrombolysis protection method to solve the above problems. Summary of the Invention

[0007] In order to solve the above problems; the purpose of the present invention is to provide a thrombus aspiration and thrombolysis protection method.

[0008] To solve the above technical problems, the present invention adopts the following technical solution: A thrombus aspiration and thrombolysis protection method, including the following steps:

[0009] S1. First, disinfect the femoral artery, and then inject subcutaneous anesthesia;

[0010] S2. Insert a catheter through the femoral artery on the healthy side, then perform bilateral lower limb arteriography at the lower end of the abdominal aorta. Determine the embolized site through lower limb arteriography, place a corresponding vascular sheath according to the diameter of the blood vessel at the embolized site, then insert the catheter to the plane of the thrombus under the guidance of a guide wire, connect the aspiration device to the guiding catheter and maintain negative pressure to aspirate thrombi, aspirate several times repeatedly, and stop aspiration when the thrombi are aspirated and blood circulation is smooth;

[0011] S3. After aspiration, inject urokinase through the aspiration device, leave the catheter in the diseased blood vessel, and then return to the ward for thrombolysis. Inject urokinase for 1 - 3 days. If no filling defect or defect is found in the thrombus segment through angiography, the catheter can be removed, and then the blood vessel is closed with a vascular closure device.

[0012] Preferably, the plug-pulling device includes a U-shaped chassis, a suction tank, and an injection tank. Two support rings are fixedly arranged on the inner wall of the U-shaped chassis. The end of the suction tank is in movable contact with the inner walls of the two support rings. The injection tank is fixedly arranged above the suction tank.

[0013] One end of the suction tank is fixedly provided with a suction pipe. One end of the injection tank is fixedly provided with an injection pipe. One end of the injection pipe is fixedly provided with a sleeve. One end of the sleeve is fixedly connected to one end of the suction tank. The sleeve is sleeved outside the suction pipe. A channel is formed between the inner wall of the sleeve and the outer wall of the suction pipe. One end of the injection tank is fixedly provided with a filling pipe.

[0014] The other end of the sleeve is provided with a flow channel control assembly. A push-pull mechanism is arranged on the U-shaped chassis. A power switching assembly is arranged on the push-pull mechanism.

[0015] Preferably, the flow channel control assembly includes a fixed ring. The fixed ring is fixedly arranged on the inner wall of the sleeve away from the injection pipe. A plurality of fixed notches are arranged in a circular array on the outer wall of the fixed ring. A rotating ring is arranged on one side of the fixed ring. A plurality of movable notches are arranged in a circular array on the outer wall of the rotating ring. The movable notches and the fixed notches are staggered from each other.

[0016] Preferably, a fixed sleeve is fixedly arranged at the axial center position of the fixed ring. A rotating shaft is rotatably installed at the axial center of the fixed sleeve. Two connecting rods are fixedly arranged at one end of the rotating shaft. One end of each of the two connecting rods is fixedly connected to the inner wall of the rotating ring.

[0017] Preferably, a worm is rotatably installed in the fixed sleeve. A worm gear is fixedly arranged at the other end of the rotating shaft. The worm and the worm gear are meshed. A first knob is fixedly arranged at one end of the worm.

[0018] Preferably, the push-pull mechanism includes two piston disks. One of the piston disks is movably arranged in the inner wall of one end of the suction tank. The other piston disk is movably arranged in the inner wall of one end of the injection tank. A piston rod is fixedly arranged on one side of each of the two piston disks. One end of one of the piston rods is slidably connected to the other end of the suction tank. One end of the other piston rod is slidably connected to the other end of the injection tank. A connecting shaft is fixedly arranged at one end of each of the two piston rods. An L-shaped moving frame is slidably arranged above the U-shaped chassis. The two connecting shafts are movably arranged at one end of the L-shaped moving frame.

[0019] Preferably, a moving seat is slidably arranged at one end of the U-shaped chassis. One end of the moving seat is fixedly connected to the other end of the L-shaped moving frame. A lead screw is rotatably installed at one end of the U-shaped chassis. One end of the lead screw is in threaded rotation connection with the moving seat.

[0020] At the other end of the U-shaped chassis, a driving motor is fixedly arranged. At the driving output end of the driving motor, a first rotating rod is fixedly arranged. At one end of the first rotating rod, a driving gear is fixedly arranged. At the other end of the U-shaped chassis, a second rotating rod is rotatably installed. At one end of the second rotating rod, a driven gear is fixedly arranged. The driving gear is meshed and connected with the driven gear. At the other end of the second rotating rod, it is fixedly connected with the other end of the lead screw.

[0021] Preferably, at one end of the L-shaped moving frame, a support seat is fixedly arranged. One end of the support seat is in movable contact with the inner wall of the U-shaped chassis. A guiding groove is formed in the inner wall of the U-shaped chassis. At one end of the moving seat, a guiding block is fixedly arranged. The guiding block is slidably arranged at one end of the guiding groove.

[0022] Preferably, the power switching component includes two L-shaped limiting rods. At one end of each of the two connecting shafts, a limiting hole is formed. One end of the L-shaped limiting rod is movably inserted into the inner wall of the limiting hole. At one end of the L-shaped moving frame, two sliding grooves are formed. At one end of each of the two sliding grooves, a slider is slidably arranged. The other end of the L-shaped limiting rod is fixedly connected with one side of the slider.

[0023] Preferably, at one end of the L-shaped moving frame, two threaded rods are rotatably installed. The threaded rods penetrate through the sliding grooves and are in threaded rotation connection with the sliders. At one end of each of the two threaded rods, a second knob is fixedly arranged.

[0024] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0025] In the present invention, through the cooperation of the flow channel control component, the pushing and pulling mechanism and the power switching component, the flow channel control component controls the opening and closing of the cavity channel, and the power switching component controls the pushing and pulling mechanism to act on the suction tank or the injection tank. During the process of sucking thrombus, the thrombus can be sucked into the suction tank through the piston disc in the pushing and pulling mechanism. During the process of thrombus thrombolysis, the thrombolytic agent in the injection tank can be extruded through the piston disc in the pushing and pulling mechanism, and the thrombolytic agent can be injected into the thrombus segment of the blood vessel through the catheter, thus conveniently realizing the thrombus suction and thrombolysis operations during the thrombus treatment process, and further effectively improving the convenience of the thrombus suction operation and the thrombolysis operation, and reducing the operation intensity of medical staff during the operation. Description of the Drawings

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0027] Figure 1Schematic diagram of the overall structure of the bolt extraction device of the present invention.

[0028] Figure 2 Another schematic diagram of the overall structure of the bolt extraction device of the present invention.

[0029] Figure 3 Schematic diagram of the separation of the suction tank and injection tank of the present invention from the support retaining ring.

[0030] Figure 4 Schematic diagram of the sectional structure of the suction tank and injection tank of the present invention.

[0031] Figure 5 Schematic diagram of the sectional structure of the sleeve of the present invention.

[0032] Figure 6 For the present invention Figure 5 Enlarged schematic diagram of part A.

[0033] Figure 7 Schematic diagram of the structure of the flow path control component of the present invention.

[0034] Figure 8 Schematic diagram of the structure of the push-pull mechanism and power switching component of the present invention.

[0035] Figure 9 For the present invention Figure 8 Enlarged schematic diagram of part B.

[0036] In the figure: 10, bolt extraction device; 1, U-shaped chassis; 2, suction tank; 3, injection tank; 11, support retaining ring; 21, suction pipe; 31, injection pipe; 32, sleeve; 33, cavity; 34, filling pipe; 4, flow path control component; 41, fixed ring; 42, fixed notch; 43, rotating ring; 44, movable notch; 45, fixed sleeve; 46, rotating shaft; 47, connecting rod; 48, worm; 49, worm gear; 481, first knob; 5, push-pull mechanism; 51, piston disc; 52, piston rod; 53, connecting shaft; 54, L-shaped moving frame; 55, moving seat; 56, lead screw; 57, support seat; 58, guide groove; 59, guide block; 6, drive motor; 61, first rotating rod; 62, drive gear; 63, second rotating rod; 64, driven gear; 7, power switching component; 71, L-shaped limiting rod; 72, limiting hole; 73, chute; 74, slider; 75, threaded rod; 76, second knob. Detailed implementation manners

[0037] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0038] Embodiment: As Figures 1-9 shown, the present invention provides a thrombus aspiration and thrombolysis protection method, including the following steps:

[0039] S1. First, disinfect the femoral artery and then inject subcutaneous anesthesia;

[0040] S2. Insert a catheter through the femoral artery on the healthy side, and then perform bilateral lower limb arteriography at the lower end of the abdominal aorta. Determine the embolized site through lower limb arteriography, place a corresponding vascular sheath according to the diameter of the blood vessel at the embolized site, and then insert the catheter to the plane of the thrombus under the guidance of a guide wire. Connect the aspiration device 10 to the guiding catheter and maintain negative pressure to aspirate the thrombus. Aspirate repeatedly for several times, and stop aspiration when the thrombus is aspirated and blood flow is smooth;

[0041] S3. After aspiration, inject urokinase through the aspiration device 10, leave the catheter in the diseased blood vessel, and then return to the ward for thrombolysis. Inject urokinase for 1 - 3 days. If no filling or defect is found in the thrombus segment through angiography, the catheter can be removed, and then the blood vessel is closed with a vascular closure device.

[0042] The aspiration device 10 includes a U-shaped chassis 1, an aspiration tank 2, and an injection tank 3. Two support retaining rings 11 are fixedly arranged on the inner wall of the U-shaped chassis 1. The end of the aspiration tank 2 is in movable contact with the inner walls of the two support retaining rings 11. The injection tank 3 is fixedly arranged on the upper part of the aspiration tank 2. By setting the support retaining rings 11, the support retaining rings 11 can support the aspiration tank 2 and the injection tank 3, and at the same time facilitate the removal of the aspiration tank 2 and the injection tank 3. By setting the aspiration tank 2 and the injection tank 3, the thrombus during the thrombus aspiration process enters the aspiration tank 2, and the medicament for thrombolysis during the thrombus aspiration treatment can be filled into the injection tank 3;

[0043] One end of the aspiration tank 2 is fixedly provided with a suction pipe 21. When the outer end of the catheter is fixed to the end of the suction pipe 21, thrombus can enter the aspiration tank 2 through the catheter and the suction pipe 21. One end of the injection tank 3 is fixedly provided with an injection pipe 31. One end of the injection pipe 31 is fixedly provided with a sleeve 32. One end of the sleeve 32 is fixedly connected to one end of the aspiration tank 2. The sleeve 32 is sleeved outside the suction pipe 21. A channel 33 is formed between the inner wall of the sleeve 32 and the outer wall of the suction pipe 21. By providing the injection pipe 31, the sleeve 32, and the formed channel 33, when the medicament in the injection tank 3 is squeezed, the medicament can enter the channel 33 through the injection pipe 31, and then enter the thrombus segment of the blood vessel through the catheter for drug thrombolysis. One end of the injection tank 3 is fixedly provided with a filling pipe 34. By providing the filling pipe 34, it is convenient for medical staff to fill the thrombolytic medicament into the injection tank 3;

[0044] The other end of the sleeve 32 is provided with a flow channel control component 4. By providing the flow channel control component 4, the flow channel control component 4 can realize the opening and closing of the channel 33. A push-pull mechanism 5 is provided on the U-shaped chassis 1. By providing the push-pull mechanism 5, the push-pull mechanism 5 can aspirate thrombus through the aspiration tank 2. The thrombus enters the aspiration tank 2 through the catheter and the suction pipe 21. The thrombolytic medicament in the injection tank 3 can also be squeezed. The thrombolytic medicament enters the thrombus segment of the blood vessel through the injection pipe 31, the channel 33, and the catheter. A power switching component 7 is provided on the push-pull mechanism 5. By providing the power switching component 7, the power switching component 7 can adjust the push-pull mechanism 5, and can aspirate thrombus and inject thrombolytic drugs respectively.

[0045] The flow channel control component 4 includes a fixed ring 41. The fixed ring 41 is fixedly arranged on the inner wall of the sleeve 32 at the end far from the injection pipe 31. A plurality of fixed notches 42 distributed in a circular array are formed on the outer wall of the fixed ring 41. A rotating ring 43 is arranged on one side of the fixed ring 41. A plurality of movable notches 44 distributed in a circular array are formed on the outer wall of the rotating ring 43. The movable notches 44 and the fixed notches 42 are staggered from each other. By providing the fixed notches 42, the rotating ring 43, and the movable notches 44, when the rotating ring 43 rotates and the movable notches 44 coincide with the fixed notches 42, the channel 33 is in a smooth state, and the thrombolytic drug in the injection tank 3 can enter the catheter through the injection pipe 31 and the channel 33. If the movable notches 44 and the fixed notches 42 are in a staggered state, the channel 33 is in a closed state, and the thrombolytic drug cannot pass through.

[0046] A fixed sleeve 45 is fixedly arranged at the axial center position of the fixed ring 41. A rotating shaft 46 is rotatably installed at the axial center of the fixed sleeve 45. One end of the rotating shaft 46 is fixedly provided with two connecting rods 47. One end of the two connecting rods 47 is fixedly connected to the inner wall of the rotating ring 43. By driving the rotating shaft 46 to rotate, the rotating shaft 46 can make the rotating ring 43 rotate through the connecting rods 47, so that the movable notches 44 and the fixed notches 42 are staggered or coincide.

[0047] A worm 48 is rotatably installed inside a fixed sleeve 45. The other end of a rotating shaft 46 is fixedly provided with a worm gear 49. The worm 48 and the worm gear 49 are meshed and connected. One end of the worm 48 is fixedly provided with a first knob 481. By rotating the first knob 481, the first knob 481 can make the worm 48 rotate. The worm 48 can drive the worm gear 49 to rotate, and the worm gear 49 can make the rotating shaft 46 rotate.

[0048] The pushing and pulling mechanism 5 includes two piston discs 51. One of the piston discs 51 is movably arranged on the inner wall of one end of the suction tank 2, and the other piston disc 51 is movably arranged on the inner wall of one end of the injection tank 3. One side of each of the two piston discs 51 is fixedly provided with a piston rod 52. One end of one piston rod 52 is slidably connected to the other end of the suction tank 2, and one end of the other piston rod 52 is slidably connected to the other end of the injection tank 3. One end of each of the two piston rods 52 is fixedly provided with a connecting shaft 53. An L-shaped moving frame 54 is slidably arranged above the U-shaped bottom frame 1. The two connecting shafts 53 are movably arranged at one end of the L-shaped moving frame 54. By driving the L-shaped moving frame 54 to move horizontally, the L-shaped moving frame 54 can make the piston discs 51 move horizontally in the suction tank 2 and the injection tank 3 through the connecting shafts 53 and the piston rods 52. When the piston disc 51 moves horizontally in the suction tank 2, the thrombus in the blood vessel can be aspirated through the suction pipe 21 and the catheter. When the piston disc 51 moves horizontally in the injection tank 3, the thrombolytic agent in the injection tank 3 can be squeezed. The thrombolytic agent in the injection tank 3 enters the thrombus segment of the blood vessel through the injection pipe 31, the cavity 33 and the catheter.

[0049] A moving seat 55 is slidably arranged at one end of the U-shaped bottom frame 1. One end of the moving seat 55 is fixedly connected to the other end of the L-shaped moving frame 54. A lead screw 56 is rotatably installed at one end of the U-shaped bottom frame 1. One end of the lead screw 56 is in threaded rotational connection with the moving seat 55. By driving the moving seat 55 to move horizontally, the moving seat 55 can make the L-shaped moving frame 54 move horizontally. By driving the lead screw 56 to rotate, the lead screw 56 can drive the moving seat 55 to move horizontally;

[0050] A driving motor 6 is fixedly provided at the other end of the U-shaped bottom frame 1. A first rotating rod 61 is fixedly provided at the driving output end of the driving motor 6. A driving gear 62 is fixedly provided at one end of the first rotating rod 61. A second rotating rod 63 is rotatably installed at the other end of the U-shaped bottom frame 1. A driven gear 64 is fixedly provided at one end of the second rotating rod 63. The driving gear 62 is meshed and connected with the driven gear 64. The other end of the second rotating rod 63 is fixedly connected to the other end of the lead screw 56. By turning on the driving motor 6, the driving shaft of the driving motor 6 can make the first rotating rod 61 rotate. The first rotating rod 61 can make the driving gear 62 rotate. The driving gear 62 can drive the driven gear 64 to rotate. The driven gear 64 can make the lead screw 56 rotate through the second rotating rod 63.

[0051] One end of the L-shaped moving frame 54 is fixedly provided with a support base 57. One end of the support base 57 is in movable contact with the inner wall of the U-shaped bottom frame 1. By providing the support base 57, the support base 57 can support the end of the L-shaped moving frame 54 to improve stability. A guide groove 58 is provided on the inner wall of the U-shaped bottom frame 1. One end of the moving seat 55 is fixedly provided with a guide block 59. The guide block 59 is slidably arranged at one end of the guide groove 58. By providing the guide groove 58 and the guide block 59, the guide block 59 can slide horizontally along the inner wall of the guide groove 58, so that the moving seat 55 moves in the horizontal direction.

[0052] The power switching assembly 7 includes two L-shaped limiting rods 71. One end of each of the two connecting shafts 53 is provided with a limiting hole 72. One end of the L-shaped limiting rod 71 is movably inserted into the inner wall of the limiting hole 72. By providing the L-shaped limiting rod 71 and the limiting hole 72, after the L-shaped limiting rod 71 is inserted into the inside of the limiting hole 72, the connection between the connecting shaft 53 and the L-shaped moving frame 54 can be realized. When the L-shaped limiting rod 71 is separated from the limiting hole 72, the separation of the L-shaped moving frame 54 from the connecting shaft 53 can be realized, so that the piston disk 51 in the suction tank 2 or the injection tank 3 moves horizontally. Two sliding grooves 73 are provided at one end of the L-shaped moving frame 54. One end of each of the two sliding grooves 73 is slidably provided with a slider 74. The other end of the L-shaped limiting rod 71 is fixedly connected to one side of the slider 74. By providing the sliding grooves 73 and the sliders 74, by driving the sliders 74 to slide vertically in the sliding grooves 73, the sliders 74 can make the L-shaped limiting rods 71 lift synchronously, so that the L-shaped limiting rods 71 are inserted into or separated from the limiting holes 72.

[0053] Two threaded rods 75 are rotatably installed at one end of the L-shaped moving frame 54. The threaded rods 75 penetrate through the sliding grooves 73 and are in threaded rotation connection with the sliders 74. One end of each of the two threaded rods 75 is fixedly provided with a second knob 76. By rotating the second knob 76, the second knob 76 can make the threaded rod 75 rotate, and the threaded rod 75 can drive the slider 74 to slide vertically in the sliding groove 73.

[0054] Working principle: During the thrombus aspiration process, medical staff first put the end of the catheter inserted into the blood vessel outside the sleeve 32 and seal it and fix it with a sealing tape;

[0055] Subsequently, the medical staff rotates a second knob 76 on the upper part of the L-shaped moving frame 54. The second knob 76 makes the threaded rod 75 rotate. The threaded rod 75 drives the slider 74 to slide downward. The slider 74 makes the L-shaped limiting rod 71 descend synchronously, so that the L-shaped limiting rod 71 is separated from the limiting hole 72. At this time, the connecting shaft 53 at one end of the injection tank 3 is in a separated state from the L-shaped moving frame 54;

[0056] Next, the medical staff starts the driving motor 6. The driving shaft of the driving motor 6 makes the driving gear 62 rotate through the first rotating rod 61. The driving gear 62 makes the second rotating rod 63 rotate through the driven gear 64. The second rotating rod 63 makes the lead screw 56 rotate. The lead screw 56 drives the moving seat 55 to horizontally move towards one end of the driving motor 6. The moving seat 55 pulls the piston disc 51 in the suction tank 2 to horizontally move synchronously through the L-shaped moving frame 54, the connecting shaft 53 and the piston rod 52. During this process, the thrombus suction action is performed. The negative pressure formed sucks the thrombus in the blood vessel thrombus segment through the suction pipe 21 and the catheter. The sucked thrombus enters the suction tank 2 through the catheter and the suction pipe 21 (if the thrombus cannot be sucked out in one time, control the driving motor 6 to rotate forward and backward to drive the piston disc 51 to reciprocate to achieve multiple suctions), thus conveniently realizing the automatic suction operation of the thrombus, effectively improving the convenience of the thrombus suction operation, and reducing the operation intensity of the medical staff's surgical operation;

[0057] During the thrombolysis process, the medical staff disengages the connecting shaft 53 at one end of the suction tank 2 from the L-shaped moving frame 54, and synchronously opens the sealing plug at the upper end of the filling pipe 34. The opening of the thrombolytic agent bottle is sleeved on the upper end of the filling pipe 34. Then, the driving motor 6 drives the moving seat 55 to horizontally move towards one end of the driving motor 6. The moving seat 55 pulls the piston disc 51 in the injection tank 3 to horizontally move synchronously through the L-shaped moving frame 54, the connecting shaft 53 and the piston rod 52. As the piston disc 51 horizontally moves, the negative pressure formed by the piston disc 51 sucks the thrombolytic agent in the thrombolytic agent bottle. The thrombolytic agent enters the interior of the injection tank 3 through the filling pipe 34;

[0058] After the thrombolytic agent enters the interior of the injection tank 3, close the sealing plug at the upper end of the filling pipe 34. Then rotate the first knob 481. The first knob 481 makes the worm 48 rotate. The worm 48 makes the rotating shaft 46 rotate through the worm gear 49. The rotating shaft 46 makes the rotating ring 43 rotate through the connecting rod 47, so that the movable notch 44 coincides with the fixed notch 42. At this time, the cavity 33 is in a smooth state. Then make the driving shaft of the driving motor 6 rotate in the reverse direction. At this time, the moving seat 55 moves horizontally away from one end of the driving motor 6. The piston disc 51 in the injection tank 3 squeezes the thrombolytic drug. The squeezed thrombolytic drug enters the thrombus segment of the blood vessel through the injection pipe 31, the cavity 33 and the catheter to dissolve the thrombus, thus conveniently realizing the automatic injection of the thrombolytic agent during the thrombolysis process, effectively improving the convenience of the thrombolysis operation, and further reducing the operation intensity of the medical staff's surgical operation.

[0059] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalent technologies, the present invention is also intended to include these modifications and variations.

Claims

1. A thrombus aspiration and thrombolysis protection method, characterized in that, It includes the following steps: S1. First, disinfect the femoral artery and then inject subcutaneous anesthesia; S2. Insert a catheter through the femoral artery on the healthy side, then perform bilateral lower limb arteriography at the lower end of the abdominal aorta. Determine the embolization site through lower limb arteriography, place a corresponding vascular sheath according to the diameter of the blood vessel at the embolization site, then insert the catheter to the plane of the embolus under the guidance of a guide wire. Connect the aspiration device (10) to the guiding catheter and maintain negative pressure to aspirate the thrombus. Aspirate repeatedly for several times. Stop aspiration when the thrombus is aspirated and blood flow is unobstructed; S3. After aspiration, inject urokinase through the aspiration device (10), leave the catheter in the diseased blood vessel, and then return to the ward for thrombolysis. Inject urokinase for 1 - 3 days. If no filling or defect is found in the thrombus segment through angiography, the catheter can be removed, and then the blood vessel is closed with a vascular closure device.

2. The thrombus aspiration and thrombolysis protection method according to claim 1, characterized in that, The aspiration device (10) includes a U-shaped chassis (1), an aspiration tank (2), and an injection tank (3). Two support retaining rings (11) are fixedly arranged on the inner wall of the U-shaped chassis (1). The end of the aspiration tank (2) is in movable contact with the inner walls of the two support retaining rings (11). The injection tank (3) is fixedly arranged on the upper part of the aspiration tank (2); One end of the aspiration tank (2) is fixedly provided with an aspiration tube (21). One end of the injection tank (3) is fixedly provided with an injection tube (31). One end of the injection tube (31) is fixedly provided with a sleeve (32). One end of the sleeve (32) is fixedly connected to one end of the aspiration tank (2). The sleeve (32) is sleeved outside the aspiration tube (21). A channel (33) is formed between the inner wall of the sleeve (32) and the outer wall of the aspiration tube (21). One end of the injection tank (3) is fixedly provided with a filling tube (34); The other end of the sleeve (32) is provided with a flow path control assembly (4). A push-pull mechanism (5) is arranged on the U-shaped chassis (1). A power switching assembly (7) is arranged on the push-pull mechanism (5).

3. The thrombus aspiration and thrombolysis protection method according to claim 2, characterized in that, The flow path control assembly (4) includes a fixing ring (41). The fixing ring (41) is fixedly arranged on the inner wall of the sleeve (32) away from the injection tube (31). A plurality of fixing notches (42) distributed in a circular array are formed on the outer wall of the fixing ring (41). A rotating ring (43) is arranged on one side of the fixing ring (41). A plurality of movable notches (44) distributed in a circular array are formed on the outer wall of the rotating ring (43). The movable notches (44) are staggered from the fixing notches (42).

4. The thrombus aspiration and thrombolysis protection method according to claim 3, wherein, A fixing sleeve (45) is fixedly arranged at the axial center position of the fixing ring (41). A rotating shaft (46) is rotatably installed at the axial center of the fixing sleeve (45). Two connecting rods (47) are fixedly arranged at one end of the rotating shaft (46). One ends of the two connecting rods (47) are fixedly connected to the inner wall of the rotating ring (43).

5. The thrombus aspiration and thrombolysis protection method according to claim 4, characterized in that A worm (48) is rotatably installed inside the fixed sleeve (45). The other end of the rotating shaft (46) is fixedly provided with a worm gear (49). The worm (48) and the worm gear (49) are meshed and connected. One end of the worm (48) is fixedly provided with a first knob (481).

6. The thrombus aspiration and thrombolysis protection method according to claim 2, wherein, The push-pull mechanism (5) includes two piston disks (51). One of the piston disks (51) is movably arranged on the inner wall of one end of the suction tank (2), and the other piston disk (51) is movably arranged on the inner wall of one end of the injection tank (3). One side of each of the two piston disks (51) is fixedly provided with a piston rod (52). One end of one of the piston rods (52) is slidably connected to the other end of the suction tank (2), and one end of the other piston rod (52) is slidably connected to the other end of the injection tank (3). One end of each of the two piston rods (52) is fixedly provided with a connecting shaft (53). An L-shaped moving frame (54) is slidably arranged above the U-shaped bottom frame (1). The two connecting shafts (53) are movably arranged at one end of the L-shaped moving frame (54).

7. The thrombus aspiration and thrombolysis protection method according to claim 6, characterized in that, A moving seat (55) is slidably arranged at one end of the U-shaped bottom frame (1). One end of the moving seat (55) is fixedly connected to the other end of the L-shaped moving frame (54). A lead screw (56) is rotatably installed at one end of the U-shaped bottom frame (1). One end of the lead screw (56) is in threaded rotation connection with the moving seat (55); A drive motor (6) is fixedly provided at the other end of the U-shaped bottom frame (1). A first rotating rod (61) is fixedly provided at the drive output end of the drive motor (6). A drive gear (62) is fixedly provided at one end of the first rotating rod (61). A second rotating rod (63) is rotatably installed at the other end of the U-shaped bottom frame (1). A driven gear (64) is fixedly provided at one end of the second rotating rod (63). The drive gear (62) is meshed and connected with the driven gear (64). The other end of the second rotating rod (63) is fixedly connected to the other end of the lead screw (56).

8. The thrombus aspiration and thrombolysis protection method according to claim 7, characterized in that, A support seat (57) is fixedly provided at one end of the L-shaped moving frame (54). One end of the support seat (57) is in movable contact with the inner wall of the U-shaped bottom frame (1). A guide groove (58) is formed in the inner wall of the U-shaped bottom frame (1). A guide block (59) is fixedly provided at one end of the moving seat (55). The guide block (59) is slidably arranged at one end of the guide groove (58).

9. The thrombus aspiration and thrombolysis protection method according to claim 6, wherein The power switching component (7) includes two L-shaped limiting rods (71). One end of each of the two connecting shafts (53) is provided with a limiting hole (72). One end of the L-shaped limiting rod (71) is movably inserted into the inner wall of the limiting hole (72). Two sliding grooves (73) are formed at one end of the L-shaped moving frame (54). A slider (74) is slidably arranged at one end of each of the two sliding grooves (73). The other end of the L-shaped limiting rod (71) is fixedly connected to one side of the slider (74).

10. A thrombus aspiration and thrombolysis protection method according to claim 9, characterized in that, Two threaded rods (75) are rotatably installed at one end of the L-shaped moving frame (54). The threaded rods (75) penetrate through the sliding grooves (73) and are in threaded rotational connection with the sliders (74). Second knobs (76) are fixedly arranged at one ends of the two threaded rods (75).

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