Suction catheter with side opening

Abstract

The utility model discloses a suction catheter with a side opening, which relates to the technical field of medical instruments and is characterized by comprising a catheter seat and a suction catheter fixedly inserted into the catheter seat, the bottom end of the suction catheter is fixedly inserted into the inner bottom end of an intubation tube, a plug is arranged at the top end of the intubation tube, and the intubation tube is inserted into the catheter seat. Clamping grooves are symmetrically formed in the inner side walls of the two sides in the insertion sleeve, the insertion sleeve is fixedly installed at one end of the negative pressure machine, the plug is arranged on one side of the insertion pipe connected to the bottom end of the suction guide pipe and detachably inserted into the insertion sleeve on one side of the negative pressure machine, the clamping plates are fixedly connected to the top ends of the two outer sides of the plug, the clamping plates are movably inserted into the clamping grooves, and the clamping grooves are symmetrically formed in the inner side walls of the two inner sides of the insertion sleeve. Clamping plates on the two sides of a plug are inserted into a clamping groove and a limiting groove, two sets of abutting plates and fixing frames are matched with reset springs to limit the positions of the abutting plates, and therefore the plug bush and the insertion pipe are fixedly connected in a sealed mode, the catheter is convenient to replace and use, and the problem that the suction catheter is inconvenient to disassemble, assemble and replace is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, and more specifically, to a side-opening suction catheter. Background Art

[0002] Coronary atherosclerotic heart disease has become the number one killer that threatens people's health and life. The rupture of unstable atherosclerotic plaques in the coronary arteries leads to acute thrombosis, which causes occlusion of the coronary artery lumen, interruption of blood flow, and ischemia or necrosis of myocardial cells in the corresponding blood supply area. The key to treating patients with acute coronary syndrome (ACS) is to quickly open infarction-related blood vessels and restore blood supply to myocardial cells to reduce the area of ​​myocardial infarction and reduce the risk of complications. In recent years, with the accumulation of evidence-based medicine, the application value of thrombus aspiration catheters in emergency PC I has gradually been recognized.

[0003] During treatment, the existing suction catheter is used by inserting one end of the suction catheter into the thrombus in the blood vessel and connecting the other end to a negative pressure device to suction the thrombus. Multiple thrombi in the blood vessel cannot be suctioned multiple times, and the specifications of the device need to be frequently replaced. The connection between the existing suction catheter and the negative pressure device usually uses a smaller suction catheter to be inserted on the outside of a larger negative pressure machine pipeline, and the suction catheter is contracted to fix and seal it, which results in a time-consuming and labor-intensive disassembly and assembly problem.

[0004] Therefore, in order to solve the above technical problems, the present application proposes a side-opening suction catheter. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model aims to provide a side-opening suction catheter.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a side-opening suction catheter, comprising a catheter seat, and also comprising a suction catheter fixedly inserted in the catheter seat, the bottom end of the suction catheter is fixedly inserted in the bottom end of the cannula, the top of the cannula is provided with a plug, and the top ends of the two sides outside the plug are fixedly connected with a clamping plate, the clamping plate is movably inserted in a clamping slot, the clamping slot is symmetrically arranged on the inner side walls on both sides of the plug sleeve, the plug sleeve is fixedly installed at one end of a negative pressure machine, and a limiting groove is symmetrically L-shaped on one side of the bottom end of the clamping slot, and the clamping slot and the limiting groove are in a transverse U-shape with one end longer and the other end shorter.

[0007] In this scheme, a resistance plate is provided at the bottom end of the card slot and the bottom end of the limiting groove, and the two ends of the bottom of the resistance plate are fixedly connected to the two ends of the fixing frame, and the bottom of the fixing frame is fixedly connected to the inner side wall of the card slot and the bottom end of the limiting groove by a return spring, and the bottom end of the card slot and the bottom end of the limiting groove are slidably connected to the resistance plate, and the center position of the bottom of the two groups of resistance plates is connected to the two ends of the fixing frame, and the two ends of the bottom of the fixing frame are connected to the card slot and the inner side wall of the bottom end of the limiting groove by a return spring, so that the card plate can be restricted by the return spring in cooperation with the fixing frame and the resistance plate, and the card plate is fixed in the limiting groove.

[0008] In this embodiment, a sealing ring is provided at the bottom end of the inner side wall of the socket corresponding to the depth position of the limit groove, and a sealing ring is adhered to the surface of the sealing ring. A sealing ring is provided at the bottom end of the inner side wall of the socket corresponding to the depth position of the limit groove, and a sealing ring is adhered to the surface of the sealing ring, which can provide sealing protection for the connection between the plug and the socket.

[0009] It should be noted that the bottom end of the suction catheter inserted in the catheter seat is fixedly connected to the larger end of the guide head, the guide head is set in a conical shape, and the top of the other end of the guide head with a smaller size is fixedly connected with a semicircular head. The bottom end of the suction catheter inserted in the catheter seat is connected to the conical guide head, and the semicircular head is installed on the top of the smaller guide head. The semicircular head can cooperate with the conical guide head to provide protection for the inner wall of the blood vessel when the suction catheter is inserted, thereby preventing sharp or sharp-angled plugs from being directly inserted into the blood vessel and causing damage to the blood vessel wall.

[0010] Furthermore, the guide head surface is provided with suction holes, and the suction holes are provided in several groups. The guide head surface is provided with several groups of suction holes, which can facilitate the suction treatment of thrombus in the blood vessel through the suction holes.

[0011] Among them, a guide wire channel is opened at the top inner part and the middle side of the surface of the guide head, and an internally connected guide wire channel is opened at the top inner part and the middle side of the surface of the guide head, so that the guide wire can be inserted into the guide wire channel, thereby inserting the suction catheter into the location of the thrombus in the blood vessel for treatment.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] 1. In the utility model, a plug is provided on one side of the cannula connected to the bottom end of the suction catheter and is detachably plugged into the socket on one side of the negative pressure machine, the clamping plates on both sides of the plug are plugged into the clamping groove and the limiting groove, and the position of the contact plate is limited by two sets of abutment plates and a fixing frame in cooperation with a reset spring, so that the socket and the cannula are fixedly and sealedly connected, so as to facilitate the replacement and use of the catheter;

[0014] 2. In the utility model, the contact plates are connected by sliding at the bottom of the card slot and the bottom of the limit slot, the center of the bottom of the two sets of contact plates are connected to the two ends of the fixing frame, and the two ends of the bottom of the fixing frame are connected to the inner side wall of the card slot and the bottom of the limit slot through the return spring, so that the card plate can be restricted by the return spring in cooperation with the fixing frame and the contact plates, and the card plate is fixed in the limit slot;

[0015] 3. In the utility model, a sealing ring is provided at the bottom end of the inner wall of the socket corresponding to the depth of the limit groove, and a sealing ring is adhered to the surface of the sealing ring, so that sealing protection can be provided for the connection between the plug and the socket. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0017] Figure 1 This is a schematic diagram of the overall structure of a side-opening suction catheter of the utility model;

[0018] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0019] Figure 3 for Figure 1 Enlarged view of point B in the middle;

[0020] Figure 4 This is a schematic diagram of the semicircular head structure of a side-opening suction catheter of the utility model;

[0021] Figure 5 It is a structural schematic diagram of a side-opening suction catheter contact plate of the utility model.

[0022] In the figure: 1-negative pressure machine; 2-insert sleeve; 3-cannula; 4-suction catheter; 5-suction hole; 6-guide head; 7-sealing ring; 8-sealing ring; 9-resistance plate; 10-reset spring; 11-fixing frame; 12-limiting groove; 13-card slot; 14-plug; 15-card plate; 16-guide wire channel; 17-catheter seat; 18-semicircular head. DETAILED DESCRIPTION

[0023] like Figure 1-5As shown, the utility model provides a side-opening suction catheter, including a catheter seat 17, and also includes a suction catheter 4 fixedly inserted in the catheter seat 17, the bottom end of the suction catheter 4 is fixedly inserted in the bottom end of the cannula 3, the top of the cannula 3 is provided with a plug 14, the tops of the two sides of the plug 14 are fixedly connected with a clamping plate 15, the clamping plate 15 is movably inserted in the clamping groove 13, the clamping groove 13 is symmetrically arranged on the inner side walls on both sides of the plug sleeve 2, the plug sleeve 2 is fixedly installed at one end of the negative pressure machine 1, and the bottom end of the clamping groove 13 is symmetrically L-shaped with a limiting groove 12, and the clamping groove 13 and the limiting groove 12 are in a transverse U-shape with one end longer and the other end shorter;

[0024] The designed cannula 3 is provided with a plug 14 at the top and a clamping plate 15 at both sides. The clamping plate 15 is movably inserted into the clamping grooves 13 provided at both sides of the plug sleeve 2. A limiting groove 12 is provided on one side of the clamping groove 13. In this way, during use, the clamping plate 15 is inserted into the bottom end of the clamping groove 13 and then the plug 14 is rotated to insert the clamping plate 15 into the limiting groove 12 for fixing, thereby realizing quick installation and disassembly of the suction catheter 4.

[0025] The inner bottom end of the card slot 13 and the inner bottom end of the limit slot 12 are provided with a contact plate 9, the two ends of the bottom of the contact plate 9 are fixedly connected to the two ends of the fixing frame 11, and the bottom of the fixing frame 11 is fixedly connected to the inner side wall of the inner bottom end of the card slot 13 and the limit slot 12 through a return spring 10;

[0026] The designed bottom ends of the card slot 13 and the limiting slot 12 are provided with a contact plate 9, and the two ends of the bottom of the contact plate 9 with an integrated and smooth surface are connected to the two ends of the fixing frame 11, and the bottom of the fixing frame 11 is connected to the card slot 13 and the inner side wall of the bottom end of the limiting slot 12 through a return spring 10, so that the card plate 15 can be restricted by the return spring 10 in cooperation with the fixing frame 11 and the contact plate 9, and the card plate 15 is fixed in the limiting slot 12. After the card plate 15 is inserted into the bottom end through the card slot 13 and contacts the surface of one end of the contact plate 9, the card plate 15 is pressed downward to press the return spring 10 downward through the contact plate 9 and the fixing frame 11, so that after one end of the contact plate 9 is tilted, the card plate 15 is rotated to slide on the surface of the contact plate 9 to the other end. Since the surface of the contact plate 9 is smooth and is an integral whole, the sliding of the card plate 15 will not be restricted.

[0027] A sealing ring 8 is provided at the bottom end of the inner wall of the plug sleeve 2 at a depth corresponding to the limiting groove 12, and a sealing ring 7 is adhered to the surface of the sealing ring 8;

[0028] A sealing ring 8 is provided at the bottom end of the inner wall of the socket 2 at a depth corresponding to the limit groove 12, and a sealing ring 7 is adhered to the surface of the sealing ring 8, so as to provide sealing protection for the connection between the plug 14 and the socket 2;

[0029] When in use, after taking out the negative pressure machine 1 and the suction catheter 4, the plug 14 set at the top of the cannula 3 at the bottom of the suction catheter 4 is correspondingly inserted into the socket 2 set at the top of the negative pressure machine 1, and the card plates 15 set on both sides of the plug 14 are inserted into the corresponding positions of the card slot 13, and then the plug 14 is inserted into the socket 2, and the cannula 3 is grabbed and the plug 14 is completely inserted into the socket 2 and pushed inward with force, and the card plate 15 contacts the contact plate 9 and squeezes the reset spring 10 through the fixing frame 11. At the same time, the top position of the plug 14 will squeeze the sealing ring 7, and after the card plate 15 is pushed inward to the bottom end position of the card slot 13, according to the position of the card plate 15 and the limit slot 12, the plug 14 is rotated, and the plug 14 drives the card plate 15 to be inserted from the bottom end of the card slot 13 to the bottom end of the limit slot 12, and the plug 14 and the socket 2 are released, and the reset spring 10 is released. 10 rebounds, fixes the card plate 15 in the limiting groove 12, and can provide sealing protection for the connection between the cannula 3 and the plug sleeve 2 through the sealing ring 7 and the sealing ring 8, then the guide head 6 at the bottom end of the suction catheter 4 can be inserted into the blood vessel through the guide wire, and the guide head 6 is inserted to the thrombus position to suction the thrombus through the suction hole 5 for treatment. When the suction catheter 4 is plugged in, the semicircular head 18 cooperates with the conical guide head 6 to provide protection for the inner wall of the blood vessel to prevent the sharp or sharp-angled plug 14 from being directly inserted into the blood vessel to cause damage to the blood vessel wall. When disassembling the suction catheter 4, it is only necessary to squeeze the plug sleeve 2 inward and then rotate it in the opposite direction, and rotate the card plate 15 from the bottom end of the limiting groove 12 to the bottom end position in the card groove 13, so that the plug 14 can be pulled out from the plug sleeve 2, which is convenient for disassembly, replacement and use of the suction catheter 4;

[0030] The bottom end of the suction catheter 4 inserted in the catheter seat 17 is fixedly connected to the larger end of the guide head 6, the guide head 6 is set in a conical shape, and the top of the other smaller end of the guide head 6 is fixedly connected to a semicircular head 18;

[0031] The conical guide head 6 connected to the bottom end of the suction catheter 4 is inserted into the catheter seat 17, and the top end of the guide head 6 with a smaller size is installed with a semicircular head 18. When the suction catheter 4 is inserted, the semicircular head 18 can cooperate with the conical guide head 6 to provide protection for the inner wall of the blood vessel, thereby preventing the relatively sharp or sharp-angled plug 14 from being directly inserted into the blood vessel to cause damage to the blood vessel wall;

[0032] The surface of the guide head 6 is provided with suction holes 5, and the suction holes 5 are provided in several groups. The top end of the guide head 6 and one side of the middle of the surface are provided with guide wire channels 16;

[0033] The surface of the guide head 6 is provided with a plurality of suction holes 5, which can facilitate suction treatment of the thrombus in the blood vessel through the suction holes 5. The top of the guide head 6 and one side of the middle of the surface are designed to cooperate with each other to open an internally connected guide wire channel 16, so that the guide wire can be inserted into the guide wire channel 16, thereby inserting the suction catheter 4 into the position of the thrombus in the blood vessel for treatment;

[0034] In order to provide sealing protection for the connection between the plug 14 and the socket 2, the sealing ring 7 has a certain elasticity. At the same time, the depth of the limiting groove 12 is shallow, and only the card plate 15 needs to be restricted. Therefore, after the card plate 15 is inserted into the limiting groove 12, the top of the plug 14 will not rebound too much, resulting in a gap between the top of the plug 14 and the sealing ring 7, causing leakage.

[0035] The above description is only a preferred embodiment of the utility model and does not limit the utility model in any form. Any ordinary technician in the industry can smoothly implement the utility model as shown in the drawings of the specification and described above. However, any equivalent changes, modifications and evolutions made by technicians familiar with the profession without departing from the scope of the technical solution of the utility model using the technical content disclosed above are all equivalent embodiments of the utility model. At the same time, any equivalent changes, modifications and evolutions made to the above embodiments based on the essential technology of the utility model are still within the protection scope of the technical solution of the utility model.

Claims

1. A side-opening suction catheter, characterized in that: comprising a catheter seat (17); Also includes; A suction catheter (4) is fixedly inserted in the catheter seat (17), the bottom end of the suction catheter (4) is fixedly inserted in the bottom end of the cannula (3), the top end of the cannula (3) is provided with a plug (14), the top ends of both sides of the plug (14) are fixedly connected with a clamping plate (15), the clamping plate (15) is movably inserted in the clamping groove (13), the clamping groove (13) is symmetrically arranged on the inner side walls on both sides of the plug sleeve (2), the plug sleeve (2) is fixedly installed at one end of the negative pressure machine (1), and a limiting groove (12) is symmetrically arranged in an L-shape on one side of the bottom end of the clamping groove (13), and the clamping groove (13) and the limiting groove (12) are in a transverse U-shape with one end being longer and the other end being shorter.

2. A side-opening suction catheter according to claim 1, characterized in that: The inner bottom end of the clamping slot (13) and the inner bottom end of the limiting slot (12) are provided with a contact plate (9), the two ends of the bottom of the contact plate (9) are fixedly connected to the two ends of the fixing frame (11), and the bottom of the fixing frame (11) is fixedly connected to the inner side wall of the inner bottom end of the clamping slot (13) and the limiting slot (12) through a return spring (10).

3. A side-opening suction catheter according to claim 2, characterized in that: A sealing ring (8) is provided at the bottom end of the inner wall of the insert sleeve (2) at a depth position corresponding to the limiting groove (12), and a sealing ring (7) is adhered to the surface of the sealing ring (8).

4. A side-opening suction catheter according to claim 3, characterized in that: The bottom end of the suction catheter (4) inserted into the catheter seat (17) is fixedly connected to the larger end of the guide head (6), the guide head (6) is arranged in a conical shape, and the top of the other smaller end of the guide head (6) is fixedly connected to a semicircular head (18).

5. The side-opening suction catheter according to claim 4, characterized in that: The surface of the guide head (6) is provided with suction holes (5), and the suction holes (5) are provided in a plurality of groups.

6. A side-opening suction catheter according to claim 5, characterized in that: A guide wire channel (16) is formed in cooperation with the inner top end and one side of the middle portion of the surface of the guide head (6).

Images