Thrombus suction auxiliary tool

Abstract

A thrombus suction auxiliary tool effectively solves the problem that thrombus suction is not thorough when an existing thrombus suction instrument sucks thrombus. Comprising a box body, an outer barrel is arranged at the upper end of the box body through a sleeve, a screw is arranged in the box body, an air cylinder and pistons are arranged on the left side and the right side in the box body respectively, the two pistons are connected through a fixing rod, a swing rod is rotationally connected to the fixing rod, a screw block is arranged at the upper end of the swing rod, and a storage barrel is arranged in the box body; a negative pressure pump is arranged at the free ends of the two connecting pipes; a suction pipe is arranged at the upper end of the storage barrel; the upper side of the outer cylinder is in threaded connection with an inner cylinder, the upper end of the inner cylinder is provided with a plurality of blades, a sleeve is arranged in the inner cylinder, the upper end of the sleeve is hinged to a plurality of connecting rods, a cylinder is slidably connected into the sleeve, the upper end of the cylinder is hinged to a plurality of pin shafts, the pin shafts are rotationally connected with scraping plates, and the free ends of the connecting rods are rotationally connected with the pin shafts. The thrombus removing device is ingenious in conception and convenient to use, and thrombus can be thoroughly removed.

Description

Technical Field

[0001] The invention relates to the technical field of medical auxiliary equipment, in particular to a thrombus aspiration auxiliary device. Background Art

[0002] Thrombi are small pieces of blood formed on the surface of peeling or repaired parts of blood vessels in the cardiovascular system. In variable fluid dependence, thrombi are composed of insoluble fibrin, deposited platelets, accumulated white blood cells and trapped red blood cells. If thrombi form blockages in human blood vessels and interrupt blood flow, it is easy to cause life-threatening diseases such as myocardial infarction and stroke. At present, thrombolytic therapy is still the mainstream treatment method for ischemic stroke, which has certain limitations, mainly reflected in the short treatment time window and low revascularization rate. Mechanical thrombectomy has significant advantages in treatment effect. The commonly used mechanical thrombectomy method is direct negative pressure aspiration of the suction catheter to aspirate the thrombus out of the blood vessel, thereby reconstructing the blood vessel.

[0003] Thrombus aspiration is mainly divided into manual thrombus aspiration catheter and mechanical thrombus aspiration device. The principle of manual thrombus aspiration catheter manual aspiration is to use syringe suction to generate negative pressure to aspirate the thrombus. The aspiration device is composed of basic components such as aspiration catheter, pressure extension tube, aspiration syringe, and aspirate filter. The aspiration catheter is generally equipped with a lockable joint or tee. During the thrombus aspiration process, some thrombi are firmly adhered, and negative pressure suction alone cannot completely aspirate the broken thrombi, resulting in incomplete thrombus removal, which is likely to cause sequelae to the patient, thereby increasing the burden on the patient. Summary of the invention

[0004] In view of the above situation, in order to overcome the defects of the prior art, the purpose of the present invention is to provide a thrombus aspiration auxiliary device, which effectively solves the problem of incomplete aspiration of thrombus by the existing thrombus aspiration devices.

[0005] The technical solution is as follows: the present invention comprises a box body, a sleeve is provided at the upper end of the box body, an upper and lower axial outer cylinder is provided at the free end of the sleeve, left and right axial and rotatable screws are provided at the front and rear sides of the box body respectively, the rotation directions of the two screws are opposite, left and right axial cylinders are provided at the left and right sides of the box body respectively, pistons are slidably connected in the cylinders, the two pistons are connected via a fixed rod, a swing rod is rotatably connected to the fixed rod, a screw block is provided at the upper end of the swing rod between the two screws, the front and rear ends of the screw block can be threadedly connected to the screws on the corresponding sides respectively, storage barrels are provided at the front and rear sides of the box body respectively, connecting pipes are provided at the right ends of the two storage barrels respectively, a negative pressure pump is provided at the free end of the two connecting pipes, a straw is provided at the upper end of the storage barrel, the free end of the straw passes through the sleeve and is fixedly connected to the upper end of the outer cylinder.

[0006] The upper side of the outer cylinder is threadedly connected to the inner cylinder, and the inner cylinder can rotate with the movement of the fixed rod. The upper end of the inner cylinder extends out of the outer cylinder and is provided with a plurality of blades evenly distributed along its circumferential direction. A sleeve is provided in the inner cylinder, the upper end of the sleeve extends out of the outer cylinder and is hinged with a plurality of connecting rods evenly distributed along its circumferential direction. A cylinder is slidably connected in the sleeve, and the cylinder can slide with the movement of the fixed rod. The upper end of the cylinder extends out of the sleeve and is hinged with a plurality of pins evenly distributed along its circumferential direction. A scraper is rotatably connected to the pin, and every two adjacent scrapers are hingedly connected via a connecting shaft. The free end of the connecting rod is rotatably connected to the pin on its corresponding side, and a plurality of scrapers can form a circular plate shape.

[0007] The present invention is ingenious in conception and easy to use. Multiple scrapers can be automatically folded before the blades cut the thrombus, so that they can pass through the thrombus and reach above the thrombus, and then unfold and scrape off the thrombus fragments remaining on the blood vessel wall, so that the thrombus can be completely removed, preventing the residual thrombus from causing sequelae, thereby reducing the burden on patients. The two cylinders and the piston can be driven by a motor to drive the multiple blades to rotate and break up the thrombus, making the thrombus easier to be absorbed by the straw, reducing the workload of medical staff. The outer tube and the cylinder are both hollow structures, which is convenient for the guide wire to pass through the middle, so that the outer tube and the blade can quickly reach the thrombus site under the guidance of the guide wire, thereby accelerating the efficiency of thrombus absorption. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 It is an axonometric view of the present invention.

[0009] Figure 2 It is a full-section front axonometric view of the outer cylinder in the present invention.

[0010] Figure 3 It is a full-section main axonometric drawing of the box body in the present invention.

[0011] Figure 4 It is a full-section left-view axonometric view of the outer cylinder in the present invention.

[0012] Figure 5 It is a full-section left-view axonometric drawing of the box body in the present invention.

[0013] Figure 6 It is a top axonometric view of the outer cylinder in the present invention.

[0014] Figure 7 It is an axonometric view of the scraper in the present invention from above.

[0015] Figure 8 It is a top view cutaway axonometric drawing of the outer cylinder in the present invention.

[0016] Fig. 9 It is a full-section top view axonometric drawing of the outer cylinder in the present invention.

[0017] Fig.10 It is a left-side cutaway axonometric view of the box body in the present invention.

[0018] Fig.11 It is a top view cutaway axonometric drawing of the box body in the present invention.

[0019] Fig.12 It is a right-side cutaway axonometric view of the box body in the present invention. DETAILED DESCRIPTION

[0020] The specific implementation modes of the present invention are further described in detail below in conjunction with the accompanying drawings.

[0021] Depend on Figures 1 to 12 It is given, including a box body 1, a sleeve 2 is provided at the upper end of the box body 1, and an outer cylinder 3 with an upper and lower axial direction is provided at the free end of the sleeve 2, left and right axial and rotatable screws 4 are respectively provided on the front and rear sides of the box body 1, and the rotation directions of the two screws 4 are opposite, and left and right axial cylinders 5 are respectively provided on the left and right sides of the box body 1, and pistons 6 are slidably connected in the cylinders 5, and the two pistons 6 are connected via a fixed rod 7, and a swing rod 8 is rotatably connected to the fixed rod 7, and a screw block 9 located between the two screws 4 is provided on the upper end of the swing rod 8, and the front and rear ends of the screw block 9 can be threadedly connected to the screw 4 on the corresponding side respectively, and storage barrels 10 are respectively provided on the front and rear sides of the box body 1, and connecting pipes are respectively provided at the right ends of the two storage barrels 10, and a negative pressure pump 11 is provided at the free end of the two connecting pipes, and a suction pipe 12 is provided at the upper end of the storage barrel 10, and the free end of the suction pipe 12 passes through the sleeve 2 and is fixedly connected to the upper end of the outer cylinder 3.

[0022] The upper side of the outer cylinder 3 is threadedly connected to the inner cylinder 13, and the inner cylinder 13 can rotate with the movement of the fixed rod 7. The upper end of the inner cylinder 13 extends out of the outer cylinder 3 and is provided with a plurality of blades 14 evenly distributed along its circumferential direction. A sleeve 15 is provided in the inner cylinder 13, and the upper end of the sleeve 15 extends out of the outer cylinder 3 and is hinged with a plurality of connecting rods 16 evenly distributed along its circumferential direction. A cylinder 17 is slidably connected in the sleeve 15, and the cylinder 17 can slide with the movement of the fixed rod 7. The upper end of the cylinder 17 extends out of the sleeve 15 and is hinged with a plurality of pins 18 evenly distributed along its circumferential direction. A scraper 19 is rotatably connected to the pin 18, and every two adjacent scrapers 19 are hingedly connected via a connecting shaft. The free end of the connecting rod 16 is rotatably connected to the pin 18 on its corresponding side, and the plurality of scrapers 19 can form a circular plate shape.

[0023] In order to make the two screw rods 4 rotate in opposite directions, a driven gear 20 is coaxially disposed on the left end of the screw rod 4, and the two driven gears 20 are meshed with each other.

[0024] In order to rotate the two screw rods 4, a motor 21 is provided in the box body 1 below the screw rods 4 and in the left and right axial direction. A driving gear 22 is provided at the output end of the motor 21, and the driving gear 22 is meshed with the driven gear 20 at the front side.

[0025] In order to enable the screw block 9 to be threadedly connected to the two screw rods 4, a disc 23 is provided on the fixed rod 7, and an arc groove 24 coaxial with the disc 23 is opened on the upper side. A cylindrical block 25 is slidably connected to the front and rear axial directions in the arc groove 24. A pull rod 26 is rotatably connected to the fixed rod 7. Tension springs 27 are respectively provided between the cylindrical block 25, the pull rod 26 and the fixed rod 7. L-shaped plates 28 are respectively provided on the front and rear sides of the box body 1. The rocker arm 8 can contact the L-shaped plate 28, and at this time the screw block 9 is threadedly connected to one of the screw rods 4.

[0026] In order to enable the inner cylinder 13 to rotate with the movement of the fixed rod 7, the outer cylinder 3 is slidably connected to the cylinder body 29, and the cylinder body 29 is rotatably connected to the rotating drum 30. The rotating drum 30 is provided with a plurality of blades 31 evenly distributed along its circumferential direction. The upper end of the rotating drum 30 passes through the cylinder body 29 and is fixedly connected to the inner cylinder 13. The cylinder body 29 is connected to the cylinder 5 on the right side through the air intake pipe 32.

[0027] In order to enable the cylinder 17 to slide with the movement of the fixed rod 7, an air cylinder 33 is provided at the lower end of the cylinder body 29. The upper end of the air cylinder 33 is connected to the cylinder body 29 via a U-shaped tube, and the lower end of the air cylinder 33 is connected to the cylinder 5 on the left side via an air outlet pipe. A pressure plate 34 is slidably connected inside the air cylinder 33, and the cylinder 17 passes through the air cylinder 33 and is fixedly connected to the pressure plate 34.

[0028] In order to prevent the scraper 19 from moving too much, a baffle 35 is provided at the upper end of the cylinder 17.

[0029] In order to facilitate medical staff to take out the thrombus in the liquid storage barrel, the front and rear ends of the box body 1 are respectively hinged with door panels, and door handles are provided on the door panels.

[0030] When the present invention is in use, firstly, a plurality of scrapers 19 are set in an initial state of forming a circular plate shape, and the screw block 9 is set in an initial state of meshing with the screw rod 4 on the rear side. The medical staff needs to first use a contrast agent to determine the location of the thrombus, and then perform interventional puncture on the patient, insert a guide wire into the blood vessel with the thrombus, and then pass the guide wire through the cylinder 17 and the outer cylinder 3, thereby sending the scraper 19 and the outer cylinder 3 into the patient's blood vessel along the guide wire until the plurality of scrapers 19 reach the thrombus.

[0031] Medical staff can start the motor 21 and the negative pressure pump 11, the output end of the motor 21 drives the driving gear 22 to rotate clockwise, the driving gear 22 drives the driven gear 20 on the front side to rotate counterclockwise, the driven gear 20 on the front side drives the screw rod 4 on the front side to rotate counterclockwise, the driven gear 20 on the front side drives the driven gear 20 on the rear side to rotate clockwise, the driven gear 20 on the rear side drives the screw rod 4 on the rear side to rotate clockwise, the screw rod 4 on the rear side drives the screw block 9 to move left, the screw block 9 drives the swing rod 8 to move left, the swing rod 8 drives the fixed rod 7 to move left, the fixed rod 7 drives the two pistons 6 to slide leftward in the cylinders 5 on their corresponding sides respectively, and the gas in the cylinder 5 on the left side enters the lower end of the air cylinder 33 through the air inlet pipe 32.

[0032] The gas drives the pressure plate 34 to slide upward, and the pressure plate 34 drives the cylinder 17 to move upward along the sleeve 15. The upper end of the cylinder 17 drives multiple connecting rods 16 to swing upward, and the connecting rod 16 drives the pin 18 on its corresponding side to swing downward. The pin 18 drives the scraper 19 on its corresponding side to fold up. When viewed from above, the multiple scrapers 19 gradually become a cross shape, which can pass through the thrombus.

[0033] When the pressing plate 34 moves to the upper end of the air cylinder 33, the cavity below the pressing plate 34 is connected to the U-shaped tube, and the pressing plate 34 stops moving upward. At this time, the multiple scrapers 19 are always in a folded state, and the gas enters the cylinder body 29 through the U-shaped tube and blows the multiple blades 31 to rotate clockwise, and the multiple blades 31 jointly drive the rotating drum 30 to rotate clockwise, and the rotating drum 30 drives the inner cylinder 13 to rotate clockwise, and the inner cylinder 13 drives the multiple blades 14 to rotate clockwise. Since the inner cylinder 13 is threadedly connected to the outer cylinder 3, the inner cylinder 13 will move upward while rotating clockwise, and the multiple blades 14 will move upward while rotating clockwise, cutting the thrombus into pieces from bottom to top, and the inner cylinder 13 drives the cylinder body 29 to slide upward through the rotating drum 30, and the cylinder body 29 drives the air cylinder 33 to move upward.

[0034] At the same time, the negative pressure pump 11 starts to absorb the gas in the two storage barrels 10 through the connecting pipe, and negative pressure is gradually formed in the storage barrels 10. The negative pressure acts on the top of the outer tube 3 through the suction tube 12, so that the broken thrombus is absorbed into the storage barrels 10.

[0035] When the swing arm 8 moves to the left side of the L-shaped plate 28 on the rear side, multiple scrapers 19 pass through the thrombus, and the swing arm 8 is squeezed by the L-shaped plate 28 and begins to swing forward. The swing arm 8 drives the cylindrical block 25 to slide forward along the arc groove 24 through the tension spring 27, and the cylindrical block 25 drives the pull rod 26 to swing forward through the tension spring 27 until the screw block 9 at the upper end of the swing arm 8 is threadedly connected with the screw rod 4 on the front side, the screw rod 4 on the front side rotates clockwise and drives the screw block 9 to move right, the screw block 9 drives the fixed rod 7 to move right through the swing arm 8, and the fixed rod 7 drives the two pistons 6 to slide right in the cylinder 5 on their corresponding sides, and the piston 6 on the right squeezes the gas in the cylinder 5 to the right, and the gas in the cylinder 5 on the right enters the cylinder body 29.

[0036] The gas blows the multiple blades 31 to rotate counterclockwise, and the multiple blades 31 together drive the rotating drum 30 to rotate counterclockwise, and the rotating drum 30 drives the inner drum 13 to rotate counterclockwise, and the inner drum 13 begins to move downward along the outer drum 3, and the multiple scrapers 19 gradually unfold until the multiple scrapers 19 together form a circular plate shape. The multiple scrapers 19 scrape off the thrombus fragments remaining on the blood vessel wall, and the scraped thrombus fragments are absorbed into the storage barrel 10 by the two suction pipes 12. After the thrombus absorption is completed, the motor 21 and the negative pressure pump 11 are turned off, and the outer drum 3 is taken out from the patient's blood vessel.

[0037] Medical personnel can open the door panel through the door handle to take out the storage barrel 10 , so as to process the thrombus fragments in the storage barrel 10 .

[0038] The present invention has novel concept, ingenious structure, convenient operation and strong practicality. The multiple scrapers can be automatically folded before the blades cut the thrombus, so that they can pass through the thrombus and reach above the thrombus, and then unfold and scrape off the thrombus fragments remaining on the blood vessel wall, so that the thrombus can be completely removed, preventing the residual thrombus from causing sequelae, thereby reducing the burden on patients. The two cylinders and pistons can be driven by a motor to drive the multiple blades to rotate and break up the thrombus, making the thrombus easier to be absorbed by the straw, reducing the workload of medical staff. The outer cylinder and the cylinder are both hollow structures, which is convenient for the guide wire to pass through the middle, so that the outer cylinder and the blade can quickly reach the thrombus site under the guidance of the guide wire, thereby accelerating the efficiency of thrombus absorption.

[0039] It can be seen that the thrombus aspiration auxiliary device provided by the present invention can effectively solve the problem of incomplete aspiration of thrombus by existing thrombus aspiration instruments. This structure is simple to operate, easy to use, and accelerates the efficiency of thrombus aspiration.

Claims

1. A thrombus aspiration auxiliary device, comprising a box (1), characterized in that: A sleeve (2) is provided at the upper end of the casing (1), and an outer cylinder (3) is provided at the free end of the sleeve (2) in an upper and lower axial direction. Left and right axial and rotatable screw rods (4) are respectively provided at the front and rear sides of the casing (1), and the two screw rods (4) rotate in opposite directions. Left and right axial cylinders (5) are respectively provided at the left and right sides of the casing (1), and pistons (6) are slidably connected in the cylinders (5). The two pistons (6) are connected via a fixed rod (7), and a swing rod (8) is rotatably connected to the fixed rod (7). A screw block (9) located between the two screw rods (4) is provided at the upper end of the swing rod (8), and the front and rear ends of the screw block (9) can be respectively threadedly connected to the screw rods (4) on the corresponding sides. Storage barrels (10) are respectively provided at the front and rear sides of the casing (1), and connecting pipes are respectively provided at the right ends of the two liquid storage barrels. A negative pressure pump (11) is provided at the free ends of the two connecting pipes. A suction pipe (12) is provided at the upper end of the storage barrel (10), and the free end of the suction pipe (12) passes through the sleeve (2) and is fixedly connected to the upper end of the outer cylinder (3).

2. The upper side of the outer cylinder (3) is threadedly connected to an inner cylinder (13), and the inner cylinder (13) can rotate with the movement of the fixed rod (7). The upper end of the inner cylinder (13) extends out of the outer cylinder (3) and is provided with a plurality of blades (14) evenly distributed along its circumferential direction. A sleeve (15) is provided in the inner cylinder (13), and the upper end of the sleeve (15) extends out of the outer cylinder (3) and is hinged with a plurality of connecting rods (16) evenly distributed along its circumferential direction. A cylinder (15) is slidably connected in the sleeve (15). (17), the cylinder (17) can slide along with the movement of the fixed rod (7), the upper end of the cylinder (17) extends out of the sleeve (15) and is hinged with a plurality of pins (18) evenly distributed along its circumferential direction, the pins (18) are rotatably connected with a scraper (19), every two adjacent scrapers (19) are hingedly connected via a connecting shaft, the free end of the connecting rod (16) is rotatably connected to the pin (18) on its corresponding side, and the plurality of scrapers (19) can form a circular plate shape.

3. The thrombus aspiration auxiliary device according to claim 1, characterized in that: A driven gear (20) is coaxially disposed at the left end of the screw rod (4), and the two driven gears (20) are meshed with each other.

4. The thrombus aspiration auxiliary device according to claim 1, characterized in that: The housing (1) is provided with a motor (21) located below the screw rod (4) and in a left-right axial direction. The output end of the motor (21) is provided with a driving gear (22), and the driving gear (22) is meshed with a driven gear (20) at the front side.

5. The thrombus aspiration auxiliary device according to claim 1, characterized in that: The fixing rod (7) is provided with a disc (23), the upper side of the disc (23) is provided with an arc groove (24) coaxial therewith, a cylindrical block (25) slidably connected to the arc groove (24) in a front-rear axial direction, a pull rod (26) is rotatably connected to the fixing rod (7), tension springs (27) are respectively provided between the cylindrical block (25), the pull rod (26) and the fixing rod (7), L-shaped plates (28) are respectively provided on the front and rear sides of the box body (1), the swing rod (8) can contact the L-shaped plate (28), and at this time, the screw block (9) is threadedly connected to one of the screw rods (4).

6. The thrombus aspiration auxiliary device according to claim 1, characterized in that: The outer cylinder (3) is slidably connected to a cylinder body (29), and a rotating cylinder (30) is rotatably connected to the cylinder body (29). The rotating cylinder (30) is provided with a plurality of blades (31) evenly distributed along its circumferential direction. The upper end of the rotating cylinder (30) passes through the cylinder body (29) and is fixedly connected to the inner cylinder (13). The cylinder body (29) is connected to the cylinder (5) on the right side via an air intake pipe (32).

7. The thrombus aspiration auxiliary device according to claim 1, characterized in that: The lower end of the cylinder body (29) is provided with an air cylinder (33), the upper end of the air cylinder (33) is connected to the cylinder body (29) via a U-shaped tube, the lower end of the air cylinder (33) is connected to the cylinder (5) on the left side via an air outlet pipe, a pressure plate (34) is slidably connected inside the air cylinder (33), and the cylinder (17) passes through the air cylinder (33) and is fixedly connected to the pressure plate (34).

8. The thrombus aspiration auxiliary device according to claim 1, characterized in that: A baffle (35) is provided at the upper end of the cylinder (17).

9. The thrombus aspiration auxiliary device according to claim 1, characterized in that: The box body (1) is hingedly provided with door panels at the front and rear ends, respectively, and door handles are provided on the door panels.

Images