Thrombus aspiration device
By designing a thrombus suction device with a movable pedal assembly and a torsion spring system, the existing device has solved the problem of complex operation and requires multiple people to cooperate, achieving higher operating accuracy and safety, and adapting to the aspiration needs of thrombus of different sizes.
Patent Information
- Application Number
- CN202510076496.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-17
- Publication Date
- 2025-04-04
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
The existing thrombus suction device requires multiple people to cooperate during operation, which is prone to errors due to errors in command transmission, and the operator's technical requirements are high.
A thrombus suction device is designed, including a base plate, a movable pedal assembly and a vertical frame. The drawstring is driven to extend through the pedal assembly, and the crossbar and gear are rotated downward to achieve air extraction. The device achieves precise control and sealing effects through a torsion spring and gear system, combined with a check valve and rubber ring.
The pumping is achieved through the pedal movable pedal assembly, which reduces the operation complexity, reduces the risk of requiring multiple people to cooperate, and improves the accuracy and safety of operations. At the same time, by adjusting the inclination angle of the movable plate and the elongation of the draw rope, it can be accurately controlled according to the thrombus of different sizes.
Smart Images
Figure CN119745465A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of medical equipment, and in particular to a thrombus aspiration device. Background Art
[0002] A thrombus aspiration device is a medical device used to remove blood clots from blood vessels. It usually uses catheter technology to extract the thrombus from the blood vessel to restore blood flow. This device plays an important role in the treatment of diseases such as acute myocardial infarction and deep vein thrombosis.
[0003] In the prior art, after inserting the thrombus aspiration catheter to the designated position, the aspiration work is performed by others, which requires the cooperation of multiple persons. During the cooperation process, mistakes may occur due to the miscommunication of instructions, and the technical requirements of the operator are high. Summary of the invention
[0004] The object of the present invention is to provide a thrombus aspiration device to solve the problems raised in the above-mentioned background technology.
[0005] To solve the above technical problems, the present invention is achieved through the following technical solutions: The present invention is a thrombus suction device, comprising a bottom plate, a movable pedal assembly and a stand are installed on the bottom plate, the stand comprises a base, two mutually parallel columns are vertically installed on the base, a connecting seat is installed at the top of the two columns, a cross bar is installed between the two connecting seats, a torsion spring, a wire drum and a gear are installed on the cross bar, the torsion spring and the gear are located at the end of the cross bar, a pull rope is wound on the wire drum, one end of the pull rope is connected to the movable end of the movable pedal assembly, a rack is matched and installed on one side of the gear, the rack is connected to the telescopic end of the suction part through the connecting rod, and the suction part is connected to the suction end of the suction catheter; The pull rope is extended by stepping on the movable pedal assembly, thereby driving the cross bar and the gear to rotate downward. During the downward rotation of the gear, the rack is driven to slide downward, thereby realizing the downward movement of the movable end of the air extraction part connected to the rack to realize air extraction.
[0006] Furthermore, the torsion spring and the gear are respectively located at two ends of the cross bar, one end of the torsion spring is fixed on the connecting seat, and the other end of the torsion spring is fixed on the cross bar.
[0007] Furthermore, the wire drum and the cross bar rotate synchronously, and the torsion spring drives the pull rope on the wire drum to reel up, and pulls the movable end of the movable pedal assembly to tilt up; When the sole of the foot presses down the movable plate, the movable end of the movable plate pulls out the draw rope wound inside the line drum and overcomes the elastic force of the torsion spring.
[0008] Furthermore, the rack and the air pumping part are both vertically distributed, the top end of the rack is connected to the bottom end of the air pumping part through a connecting rod, and the air pumping part is installed on the corresponding connecting seat through a stand; By vertically installing the air extraction part, the one-way valve installed at the top of the air extraction part can be vertically installed. Since a groove is provided on the inner wall of the lower port of the one-way valve, the falling ball cannot close the lower port of the one-way valve.
[0009] Furthermore, a housing is installed on the outer side of the gear and the rack, the housing is installed on the base through a support seat, and the top end of the rack passes through the housing and extends to the outer side of the housing; The gear and rack are protected by the installed shell, and the shell is provided with a square hole to limit the movement direction of the rack. At the same time, the side of the rack opposite to the tooth body is in contact with the inner wall of the shell, and the rack slides along the inner wall of the shell through the side.
[0010] Further, the air extraction part includes a tube body, a plug body and a pull rod are installed in the tube body, the plug body is installed at the end of the pull rod, the bottom end of the pull rod extends out of the tube body, an end cap is installed at the bottom open end of the tube body, a pipe mouth is provided at the top end of the tube body, and a one-way valve is connected to the pipe mouth; When the rack moves downward, the rack drives the pull rod and the plug body to move downward through the connecting rod; Since an annular groove is provided on the outer surface of the plug body, a chamfered structure is provided on the upper side of the annular groove, and a rubber ring is placed in the annular groove, when the plug body moves down along the inner wall of the tube body, the rubber ring moves outward along the chamfered surface of the annular groove, and realizes sealing between the plug body and the tube body, thereby realizing air extraction; During the upward movement of the plug, the plug pushes the air at the upper end of the tube into the one-way valve, blowing the ball inside the one-way valve to block the upper outlet to prevent gas backflow. At the same time, the rubber ring falls into the ring groove, and the air at the top of the tube is discharged through the gap between the tube and the plug.
[0011] Further, the movable pedal assembly includes a fixed block and a movable plate, the fixed block is fixed to the bottom plate by screws, one side of the fixed block is connected to the movable plate by a pin shaft, one end of the movable plate is provided with an opening, and one end of the pull rope is installed in the opening; The fixed block and the movable plate are connected by a pin shaft, and the movable plate rotates up and down around the axis of the pin shaft. The surfaces of the fixed block and the movable plate are both provided with a plurality of anti-slip strips. When in use, the heel is placed on the surface of the fixed block, and the forefoot is placed on the surface of the movable plate. The movable plate is controlled by pressing down the movable plate with the forefoot.
[0012] Furthermore, the bottom plate and the movable plate are connected via an elastic support member.
[0013] Further, the elastic support member includes a U-shaped frame and a fixed seat, a threaded rod is installed in the U-shaped frame, a moving block is installed on the threaded rod, a first long rod is connected to the moving block, the fixed seat is fixed to the bottom surface of the movable plate, a second long rod is installed on the movable plate, and the first long rod and the second long rod are connected by a telescopic rod; By rotating the threaded rod, the position of the moving block on the threaded rod is changed, thereby changing the inclination angle of the telescopic rod, thereby achieving the problem of changing the inclination angle of the movable board and changing the inclination angle of the soles of the feet placed on the movable board.
[0014] Furthermore, an external thread is provided on the telescopic end of the telescopic rod, and a limit nut is installed on the outer side of the external thread. The telescopic amount of the telescopic rod can be changed by rotating the position of the limit nut installed on the telescopic rod.
[0015] By rotating the threaded rod, the position of the moving block on the threaded rod is changed, thereby changing the inclination angle of the telescopic rod, thereby changing the inclination angle of the movable board, and changing the inclination angle of the soles of the feet placed on the movable board to meet the usage habits of different groups of people; In addition, the telescopic rod is an elastic telescopic rod. When it is stationary, the telescopic rod is at its maximum extension. By installing the telescopic rod and using it in conjunction with the torsion spring, the rebound speed of the movable plate is increased, making it easier to work next time. By rotating the limit nut installed on the telescopic rod, the telescopic amount of the telescopic rod is changed, thereby changing the downward pressure of the movable plate and the extension of the pull rope connected to the movable plate, thereby changing the amount of air sucked in a single time by the suction part to adapt to the suction needs of blood clots of different sizes.
[0016] The present invention has the following beneficial effects: (1) The present invention increases or decreases the speed of forefoot stepping, thereby changing the amount of air pumped in the same time and achieving precise control based on the user's clinical experience.
[0017] (2) The present invention drives the pull rope to extend by stepping on the movable pedal assembly, thereby driving the cross bar and the gear to rotate downward. During the downward rotation of the gear, the rack is driven to slide downward, thereby realizing the downward movement of the movable end of the exhaust part connected to the rack to achieve exhaust.
[0018] (3) The present invention changes the position of the moving block on the threaded rod by rotating the threaded rod, thereby changing the inclination angle of the telescopic rod, thereby achieving the problem of changing the inclination angle of the movable board and changing the inclination angle of the soles of the feet placed on the movable board to meet the usage habits of different groups of people.
[0019] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.
[0021] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 It is a partial schematic diagram of the present invention; Figure 3 It is a partial schematic diagram of the present invention; Figure 4 This is a schematic diagram of the installation of the air extraction unit of the present invention; Figure 5 For the present invention Figure 4 Schematic cross-sectional view of ; Figure 6 This is a schematic diagram of the installation of the movable pedal assembly of the present invention; Figure 7 It is a partial schematic diagram of the movable pedal assembly of the present invention; Figure 8 It is a schematic diagram of the connection between the movable pedal assembly and the movable plate of the present invention; Fig. 9 It is a schematic diagram of the connection between the movable pedal assembly and the base plate of the present invention; In the accompanying drawings, the components represented by the reference numerals are listed as follows: In the figure: 1, bottom plate; 2, fixed block; 3, movable plate; 301, opening; 4, base; 5, column; 6, connecting seat; 7, cross bar; 8, torsion spring; 9, wire drum; 10, pull rope; 11, gear; 12, rack; 13, connecting rod; 14, seat; 15, exhaust part; 1501, tube body; 1502, plug body; 1503, pull rod; 1504, end cover; 16, one-way valve; 17, support seat; 18, shell; 19, U-shaped frame; 20, threaded rod; 21, moving block; 22, first long rod; 23, telescopic rod; 2301, external thread; 24, limit nut; 25, second long rod; 26, fixed seat. DETAILED DESCRIPTION
[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. Example
[0023] See also Figure 1-Figure 5As shown, the present invention is a thrombus aspiration device, comprising a base plate 1, on which a movable pedal assembly and a stand are mounted; The movable pedal assembly includes a fixed block 2 and a movable plate 3. The fixed block 2 is fixed to the bottom plate 1 by screws. One side of the fixed block 2 is connected to the movable plate 3 by a pin shaft. An opening 301 is provided at one end of the movable plate 3. One end of the pull rope 10 is installed in the opening 301. The fixed block 2 and the movable plate 3 are connected by a pin shaft, and the movable plate 3 rotates up and down around the axis of the pin shaft. The surfaces of the fixed block 2 and the movable plate 3 are both provided with a plurality of anti-slip strips. When in use, the heel is placed on the surface of the fixed block 2, and the forefoot is placed on the surface of the movable plate 3. The movable plate 3 is controlled by pressing down the movable plate 3 with the forefoot.
[0024] The stand comprises a base 4, on which two parallel columns 5 are vertically mounted, and a connecting seat 6 is mounted on the top of each of the two columns 5, and a crossbar 7 is mounted between the two connecting seats 6; A torsion spring 8, a wire drum 9 and a gear 11 are installed on the crossbar 7, and the torsion spring 8 and the gear 11 are located at the end of the crossbar 7; The torsion spring 8 and the gear 11 are respectively located at two ends of the cross bar 7 , one end of the torsion spring 8 is fixed on the connecting seat 6 , and the other end of the torsion spring 8 is fixed on the cross bar 7 .
[0025] A pull rope 10 is wound around the wire drum 9, and one end of the pull rope 10 is connected to the movable end of the movable pedal assembly; The wire drum 9 rotates synchronously with the cross bar 7, and the torsion spring 8 drives the pull rope 10 on the wire drum 9 to reel up, and pulls the movable end of the movable pedal assembly to tilt up; When the sole of the foot presses down the movable plate 3, the movable end of the movable plate 3 pulls out the draw cord 10 wound inside the line drum 9 and overcomes the elastic force of the torsion spring 8; A rack 12 is mounted on one side of the gear 11, and the rack 12 is connected to the telescopic end of the air pumping part 15 through a connecting rod 13, and the air pumping part 15 is connected to the air pumping end of the suction duct; The pull rope 10 is extended by stepping on the movable pedal assembly, thereby driving the cross bar 7 and the gear 11 to rotate downward. During the downward rotation of the gear 11, the rack 12 is driven to slide downward, thereby realizing the downward movement of the movable end of the exhaust part 15 connected to the rack 12 to achieve exhaust.
[0026] The rack 12 and the air pumping part 15 are both vertically distributed, the top end of the rack 12 is connected to the bottom end of the air pumping part 15 through a connecting rod 13, and the air pumping part 15 is installed on the corresponding connecting seat 6 through a stand 14; The air extraction part 15 is installed vertically, so that the one-way valve 16 installed at the top of the air extraction part 15 can be installed vertically. Since a groove is provided on the inner wall of the lower port of the one-way valve 16 , the falling ball cannot close the lower port of the one-way valve 16 .
[0027] A housing 18 is installed outside the gear 11 and the rack 12. The housing 18 is installed on the base 4 through a support seat 17. The top end of the rack 12 passes through the housing 18 and extends to the outside of the housing 18. The gear 11 and the rack 12 are protected by the installed shell 18. At the same time, the shell 18 is provided with a square hole to limit the movement direction of the rack 12. At the same time, the side of the rack 12 opposite to the tooth body is in contact with the inner wall of the shell 18, and the rack 12 slides along the inner wall of the shell 18 through the side.
[0028] The air extraction part 15 includes a tube body 1501, a plug body 1502 and a pull rod 1503 are installed in the tube body 1501, the plug body 1502 is installed at the end of the pull rod 1503, the bottom end of the pull rod 1503 extends out of the tube body 1501, an end cap 1504 is installed at the bottom open end of the tube body 1501, a pipe mouth is provided at the top end of the tube body 1501, and a one-way valve 16 is connected to the pipe mouth; When the rack 12 moves downward, the rack 12 drives the pull rod 1503 and the plug body 1502 to move downward through the connecting rod 13; Since an annular groove is provided on the outer surface of the plug body 1502, and a chamfered structure is provided on the upper side of the annular groove, and a rubber ring is placed in the annular groove, when the plug body 1502 moves downward along the inner wall of the tube body 1501, the rubber ring moves outward along the chamfered surface of the annular groove, and realizes sealing between the plug body 1502 and the tube body 1501, thereby realizing air extraction; During the upward movement of the plug body 1502, the plug body 1502 pushes the air at the upper end of the tube body 1501 into the one-way valve 16, blowing the ball inside the one-way valve 16 to block the outlet at the upper end to prevent gas backflow. At the same time, the rubber ring falls into the ring groove, and the air at the top of the tube body 1501 is discharged through the gap between the tube body 1501 and the plug body 1502.
[0029] When in use, the user connects the air inlet end of the thrombus aspiration catheter to the one-way valve 16, and controls the position and depth of the thrombus aspiration catheter inserted into the human body by the user's hand, and the user's foot is placed on the movable pedal assembly, and the user's hands and feet cooperate to control it. Compared with the existing method of inserting the thrombus aspiration catheter to the specified position first and then having others perform the aspiration work, it requires the cooperation of multiple people, and during the cooperation process, errors may occur due to the wrong transmission of instructions; the existing electric aspiration equipment is regulated and used through the control switch and the control button, and the control accuracy of the single adsorption amount is poor, and a large amount of blood tissue is easily aspirated, which improves the accuracy of the overall aspiration process and can be adjusted according to the changes in the aspiration process; During use, by increasing or decreasing the speed of forefoot stepping, the amount of air pumped in the same time can be changed, and precise control can be achieved based on the user's clinical experience. Example
[0030] like Figure 6-Figure 9 As shown, the difference from the first embodiment is that the bottom plate 1 and the movable plate 3 are connected by an elastic support member.
[0031] The elastic support member includes a U-shaped frame 19 and a fixed seat 26. A threaded rod 20 is installed in the U-shaped frame 19. A moving block 21 is installed on the threaded rod 20. A first long rod 22 is connected to the moving block 21. The fixed seat 26 is fixed to the bottom surface of the movable plate 3. A second long rod 25 is installed on the movable plate 3. The first long rod 22 and the second long rod 25 are connected by a telescopic rod 23. By rotating the threaded rod 20 , the position of the moving block 21 on the threaded rod 20 is changed, thereby changing the inclination angle of the telescopic rod 23 , thereby changing the inclination angle of the movable board 3 and changing the inclination angle of the sole of the foot placed on the movable board 3 .
[0032] An external thread 2301 is provided on the telescopic end of the telescopic rod 23 , and a limit nut 24 is installed on the outer side of the external thread 2301 . The telescopic amount of the telescopic rod 23 can be changed by rotating the position of the limit nut 24 installed on the telescopic rod 23 .
[0033] By rotating the threaded rod 20, the position of the moving block 21 on the threaded rod 20 is changed, thereby changing the inclination angle of the telescopic rod 23, thereby changing the inclination angle of the movable board 3, and changing the inclination angle of the sole of the foot placed on the movable board 3 to meet the usage habits of different groups of people; In addition, the telescopic rod 23 is an elastic telescopic rod. When it is stationary, the telescopic rod 23 is at its maximum extension. By installing the telescopic rod 23 and cooperating with the torsion spring 8, the rebound speed of the movable plate 3 is increased, which is convenient for the next work. By rotating the limit nut 24 installed on the telescopic rod 23, the telescopic amount of the telescopic rod 23 is changed, thereby changing the downward pressure of the movable plate 3 and the elongation of the pull rope 10 connected to the movable plate 3, thereby changing the amount of air sucked by the suction part 15 at a time to adapt to the suction requirements of thrombi of different sizes.
[0034] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.
Claims
1. A thrombus aspiration device, comprising a base plate (1), characterized in that: A movable pedal assembly and a stand are mounted on the base plate (1); The stand comprises a base (4), on which two mutually parallel columns (5) are vertically mounted, and the top ends of the two columns (5) are both mounted with connecting seats (6), and a crossbar (7) is mounted between the two connecting seats (6); A torsion spring (8), a wire drum (9) and a gear (11) are mounted on the crossbar (7), and the torsion spring (8) and the gear (11) are located at the end of the crossbar (7); A pull rope (10) is wound around the wire drum (9), and one end of the pull rope (10) is connected to the movable end of the movable pedal assembly; A rack (12) is mounted on one side of the gear (11); the rack (12) is connected to the telescopic end of the air suction portion (15) via a connecting rod (13); and the air suction portion (15) is connected to the air suction end of the suction conduit.
2. A thrombus aspiration device according to claim 1, characterized in that: The torsion spring (8) and the gear (11) are respectively located at two ends of the crossbar (7); One end of the torsion spring (8) is fixed on the connecting seat (6), and the other end of the torsion spring (8) is fixed on the cross bar (7).
3. A thrombus aspiration device according to claim 1, characterized in that: The wire drum (9) rotates synchronously with the cross bar (7); The torsion spring (8) drives the pull rope (10) on the wire drum (9) to reel up, and pulls the movable end of the movable pedal assembly to tilt up.
4. A thrombus aspiration device according to claim 1, characterized in that: The rack (12) and the air pumping portion (15) are both vertically distributed, and the top end of the rack (12) and the bottom end of the air pumping portion (15) are connected via a connecting rod (13); The air extraction portion (15) is mounted on the corresponding connection seat (6) via a stand (14).
5. The thrombus aspiration device according to claim 1, characterized in that: A housing (18) is installed on the outer sides of the gear (11) and the rack (12), and the housing (18) is installed on the base (4) via a support seat (17); The top end of the rack (12) passes through the housing (18) and extends to the outside of the housing (18).
6. The thrombus aspiration device according to claim 1, characterized in that: The air extraction portion (15) comprises a tube body (1501), a plug body (1502) and a pull rod (1503) are installed in the tube body (1501), the plug body (1502) is installed at the end of the pull rod (1503), and the bottom end of the pull rod (1503) extends out of the tube body (1501); An end cap (1504) is mounted on the open bottom end of the tube body (1501); The top end of the tube body (1501) is provided with a tube opening, and a one-way valve (16) is connected to the tube opening.
7. The thrombus aspiration device according to claim 1, characterized in that: The movable pedal assembly comprises a fixed block (2) and a movable plate (3), wherein the fixed block (2) is fixed to the bottom plate (1) by means of screws, and one side of the fixed block (2) is connected to the movable plate (3) by means of a pin shaft; An opening (301) is formed at one end of the movable plate (3), and one end of the pull rope (10) is installed in the opening (301).
8. The thrombus aspiration device according to claim 1, characterized in that: The bottom plate (1) and the movable plate (3) are connected via an elastic support member.
9. A thrombus aspiration device according to claim 8, characterized in that: The elastic support member comprises a U-shaped frame (19) and a fixed seat (26); a threaded rod (20) is installed in the U-shaped frame (19); a moving block (21) is mounted on the threaded rod (20); and a first long rod (22) is connected to the moving block (21); The fixing seat (26) is fixed to the bottom surface of the movable plate (3), and a second long rod (25) is mounted on the movable plate (3); The first long rod (22) and the second long rod (25) are connected via a telescopic rod (23).
10. The thrombus aspiration device according to claim 9, characterized in that: The telescopic end of the telescopic rod (23) is provided with an external thread (2301), and a limit nut (24) is mounted on the outside of the external thread (2301).