Catheter for thrombus aspiration

Abstract

The utility model discloses a catheter for thrombus aspiration, which comprises a grip, a tube seat is mounted on the side edge of the grip, a tube body is fixedly sleeved inside the tube seat, a fixing plate is fixed inside the tube body, a breaking mechanism for breaking thrombus is mounted on the fixing plate, a guide head is connected to a port of the tube body, and the guide head is connected with the catheter body. And a through hole is formed in the end part of the pipe body. According to the thrombus extractor, large thrombus blocks in the tube body can be crushed by the crushing blades, and the thrombus can be extracted conveniently.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, in particular to a catheter for thrombus aspiration. Background Art

[0002] The thrombus aspiration catheter is a medical device used to remove blood clots from blood vessels and plays a key role in thrombus removal treatment.

[0003] The Chinese patent application number CN213374597U discloses a large-caliber suction catheter for aspirating thrombus. In the patent, the suction head is fixed at the distal end of the catheter body, and the expansion body is pot-shaped. In the released state, the distal diameter of the expansion body is larger than the proximal diameter. The surface of the expansion body is attached with an elastic hydrophobic film, and the arc surface of the expansion body fits the blood vessel wall, which can avoid damaging the blood vessel wall when withdrawing. The suction force is increased to achieve the aspiration of large thrombi.

[0004] When using the above patent, we found that the device does not have the ability to break up large thrombi. When large thrombi enter the interior of the catheter, they are easily blocked inside the catheter, thereby affecting the extraction of the thrombi. Therefore, we proposed a catheter for thrombus aspiration. Utility Model Content

[0005] The utility model aims to solve the shortcomings in the prior art and provides a catheter for thrombus aspiration.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A catheter for thrombus aspiration comprises a handle, a tube seat is installed on the side of the handle, a tube body is fixedly sleeved inside the tube seat, a fixing plate is fixed inside the tube body, a crushing mechanism for crushing thrombus is installed on the fixing plate, a guide head is connected to the port of the tube body, and a through hole is opened inside the end of the tube body.

[0008] Preferably, the crushing mechanism includes a wire, a fixed block, a spring, a crushing blade and a movable plate, the wire is slidably installed inside the fixed plate, a fixed block is fixed at the end of the wire, a spring is installed between the fixed block and the fixed plate, the spring is sleeved on the wire, a movable plate is hinged on the wire through the crushing blade, and the movable plate is slidably installed inside the fixed plate.

[0009] Preferably, a limiting groove is provided inside the fixed plate, a limiting block is fixed on the side of the movable plate, and the limiting block is slidably installed in the limiting groove.

[0010] Preferably, a side of the tube seat is connected to a first extraction tube, a port of the first extraction tube is connected to a second extraction tube via a quick connector, and a port of the second extraction tube is connected to an extraction pump.

[0011] Preferably, the side of the pipe seat is connected to an exhaust pipe, and a valve is installed on the exhaust pipe.

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

[0013] In the utility model, the wire is pulled, and the wire drives the fixed block to move and compress the spring to a certain shape. In this process, through the cooperation of the movable plate, the wire drives the crushing blade to move, so that the crushing blade can crush large pieces of thrombus, making it convenient to extract the thrombus. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the structure of a catheter for thrombus aspiration proposed by the utility model;

[0015] Figure 2 This is a schematic diagram of a crushing mechanism of a catheter for thrombus aspiration proposed by the utility model;

[0016] Figure 3 The utility model is a side view of a crushing mechanism of a catheter for thrombus aspiration.

[0017] In the figure: 1 handle, 2 tube seat, 3 tube body, 4 fixed plate, 5 crushing mechanism, 51 wire, 52 fixed block, 53 spring, 54 crushing blade, 55 movable plate, 6 limit block, 7 guide head, 8 through hole, 9 first extraction tube, 10 quick connector, 11 second extraction tube, 12 extraction pump, 13 exhaust pipe, 14 valve. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0019] Reference Figure 1-3A catheter for thrombus aspiration comprises a handle 1, a tube seat 2 is installed on the side of the handle 1, a tube body 3 is fixedly sleeved inside the tube seat 2, a fixing plate 4 is fixed inside the tube body 3, a crushing mechanism 5 for crushing thrombus is installed on the fixing plate 4, a guide head 7 is connected to the port of the tube body 3, a through hole 8 is opened inside the end of the tube body 3, a first extraction tube 9 is connected to the side of the tube seat 2, a port of the first extraction tube 9 is connected to the second extraction tube 11 through a quick connector 10, a port of the second extraction tube 11 is connected to an extraction pump 12, an exhaust pipe 13 is connected to the side of the tube seat 2, a valve 14 is installed on the exhaust pipe 13, the extraction pump 12 is started, and the thrombus in the tube body 3 can be extracted through the cooperation of the second extraction tube 11 and the first extraction tube 9.

[0020] Reference Figure 2 , Figure 3 The crushing mechanism 5 includes a wire 51, a fixed block 52, a spring 53, a crushing blade 54 and a movable plate 55. The wire 51 is slidably installed inside the fixed plate 4. The fixed block 52 is fixed at the end of the wire 51. A spring 53 is installed between the fixed block 52 and the fixed plate 4. The spring 53 is sleeved on the wire 51. A movable plate 55 is hinged on the wire 51 through the crushing blade 54. The movable plate 55 is slidably installed inside the fixed plate 4. A limiting groove is provided inside the fixed plate 4. A limiting block 6 is fixed on the side of the movable plate 55. The limiting block 6 is slidably installed in the limiting groove. When the wire 51 is pulled, the wire 51 drives the fixed block 52 to move and compress the spring 53 to a certain shape. In this process, through the cooperation of the movable plate 55, the wire 51 drives the crushing blade 54 to move, so that the crushing blade 54 can crush large pieces of thrombus, which is convenient for extracting thrombus.

[0021] Working principle: Pull the wire 51, the wire 51 drives the fixed block 52 to move and compress the spring 53 to a certain shape. In this process, through the cooperation of the movable plate 55, the wire 51 drives the crushing blade 54 to move, so that the crushing blade 54 can crush large pieces of thrombus, which is convenient for extracting the thrombus. Start the extraction pump 12, and through the cooperation of the second extraction tube 11 and the first extraction tube 9, the thrombus in the tube body 3 can be extracted.

[0022] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A catheter for thrombus aspiration, comprising a handle (1), characterized in that: A tube seat (2) is installed on the side of the handle (1), a tube body (3) is fixedly sleeved inside the tube seat (2), a fixing plate (4) is fixed inside the tube body (3), a crushing mechanism (5) for crushing blood clots is installed on the fixing plate (4), a guide head (7) is connected to the port of the tube body (3), and a through hole (8) is opened inside the end of the tube body (3).

2. A thrombus aspiration catheter according to claim 1, characterized in that: The crushing mechanism (5) comprises a wire (51), a fixed block (52), a spring (53), a crushing blade (54) and a movable plate (55); the wire (51) is slidably mounted inside the fixed plate (4); a fixed block (52) is fixed at the end of the wire (51); a spring (53) is mounted between the fixed block (52) and the fixed plate (4); the spring (53) is sleeved on the wire (51); a movable plate (55) is hinged on the wire (51) via the crushing blade (54); and the movable plate (55) is slidably mounted inside the fixed plate (4).

3. A thrombus aspiration catheter according to claim 2, characterized in that: A limiting groove is provided inside the fixed plate (4), a limiting block (6) is fixed on the side of the movable plate (55), and the limiting block (6) is slidably installed in the limiting groove.

4. The thrombus aspiration catheter according to claim 1, characterized in that: The side of the pipe seat (2) is connected to a first extraction pipe (9), the port of the first extraction pipe (9) is connected to a second extraction pipe (11) via a quick connector (10), and the port of the second extraction pipe (11) is connected to an extraction pump (12).

5. The thrombus aspiration catheter according to claim 1, characterized in that: The side of the pipe seat (2) is connected to an exhaust pipe (13), and a valve (14) is installed on the exhaust pipe (13).

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