Pusher for medical occluder support

Abstract

The pusher for the medical occluder support comprises a pusher body, a hand buckling ring is arranged at one end of the pusher body, and a pushing assembly is arranged at the end, close to the hand buckling ring, of the pusher body. The propelling assembly comprises an extension pipe fixedly connected with the pusher body, and a sliding frame is fixedly connected to the extension pipe. According to the plugging device, by arranging the pushing assembly, when a surgeon pushes the plugging device support, the pressing plate can be pressed, the pressing plate moves towards the receding opening at the moment, the driving plate is driven to rotate, then the pushing plate is pressed on the guide pipe and drives the guide pipe to move towards the pushing device body, and then the spring rotating shaft drives the pressing plate to return to the initial position; by means of the design, labor is saved during operation, the single-time moving distance is short, controllability is high, the device is suitable for being used in operation scenes, the follow-up adjusting requirement is reduced, and the implanting efficiency of the plugging device support is improved.

Description

Technical Field

[0001] This utility model relates to the field of surgical instrument and equipment technology, and in particular to a pusher for a medical occluder stent. Background Technology

[0002] Occluders, as implantable devices used in interventional therapy, are widely used clinically to treat congenital heart diseases such as atrial septal defects, ventricular septal defects, and patent ductus arteriosus. The main principle is to block the "holes" between the left and right ventricles, the left and right atria, and the passage between the aorta and pulmonary artery. Congenital heart disease occluders are classified into patent ductus arteriosus occluders, atrial septal defect occluders, and ventricular septal defect occluders.

[0003] In the pusher for a medical occluder stent proposed in Chinese patent CN211094334U, a handle frame and a limiting disc are used to push the catheter for delivering the occluder stent. This method is not only laborious to operate, but also has poor precision control. It often requires multiple adjustments to the position of the occluder stent after pushing, which prolongs the operation time, increases uncertainties, and lacks a more stable pushing method. Therefore, we propose a pusher for a medical occluder stent to solve the above problems. Utility Model Content

[0004] The purpose of this invention is to solve the problems existing in the prior art by proposing a pusher for a medical occluder stent.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A pusher for a medical occluder stent includes a pusher body, one end of which is provided with a buckle, and the end of the pusher body near the buckle is provided with a propulsion component;

[0007] The propulsion assembly includes an extension tube fixedly connected to the pusher body, a slide fixedly connected to the extension tube, a pressure plate rotatably connected to the slide via a spring shaft, a drive plate rotatably connected inside the pressure plate, a clearance opening on the side wall of the extension tube near the pressure plate, a push plate slidably connected to the slide, and the middle part of the push plate rotatably connected to the drive plate, and a clamping assembly fixedly connected to the end of the extension tube away from the pusher body.

[0008] Preferably, the clamping assembly includes a sleeve fixedly connected to the extension tube, a first compression spring fixedly connected inside the sleeve, an inner ring fixedly connected to the end of the first compression spring away from the extension tube, a second compression spring fixedly connected to the end of the inner ring away from the first compression spring, a push ring slidably connected to the sleeve, and the push ring fixedly connected to the second compression spring, and a plurality of elastic plates fixedly connected to the end of the push ring near the first compression spring.

[0009] Preferably, the elastic sheet is wedge-shaped, and anti-slip grooves are provided on the side where multiple elastic sheets are close to each other.

[0010] Preferably, an arc-shaped plate is provided on the side of the extension tube away from the relief opening, and ball bearings are embedded in the arc-shaped plate.

[0011] Preferably, a damping sleeve is provided inside the sleeve, and the inner ring is slidably connected to the inner wall of the damping sleeve.

[0012] Preferably, a pressure handle is fixedly connected to one side of the propulsion ring, and a groove is provided on the pressure handle.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. This utility model, by setting up a propulsion component, allows the surgeon to press the pressure plate when pushing the occluder stent. At this time, the pressure plate moves towards the clearance port, driving the drive plate to rotate, thereby causing the push plate to press on the catheter and move the catheter towards the pusher body. Then, the spring shaft drives the pressure plate back to the initial position, facilitating the next pushing operation. This design not only saves effort in operation, but also has a shorter single movement distance and higher controllability, making it suitable for use in surgical scenarios. It reduces the need for subsequent adjustments, improves the efficiency of occluder stent implantation, shortens the operation time, and improves the safety of the operation while facilitating the surgeon's operation.

[0015] 2. This utility model, by setting up a clamping component, can move the catheter by pressing the advancement ring when the occluder stent is far from the implantation position, further improving the efficiency of the occluder stent implantation surgery. Moreover, when the occluder stent is close to the implantation position, it will not interfere with the advancement component. It also has a simple structure and is easy to use. By setting up an arc plate in conjunction with a ball bearing, the resistance when the advancement component moves the catheter can be reduced, making it more convenient for the surgeon to operate. Attached Figure Description

[0016] Figure 1 This is a front view schematic diagram of a pusher for a medical occlusion device stent proposed in this utility model;

[0017] Figure 2 This is a cross-sectional structural diagram of a pusher for a medical occlusion device stent proposed in this utility model.

[0018] In the diagram: 1. Pusher body; 2. Hand ring; 3. Extension tube; 4. Slide; 5. Pressure plate; 6. Drive plate; 7. Push plate; 8. Sleeve; 9. First compression spring; 10. Inner ring; 11. Second compression spring; 12. Elastic sheet; 13. Arc plate; 14. Damping sleeve; 15. Pressure handle. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0020] Reference Figure 1-2 A pusher for a medical occluder stent includes a pusher body 1, one end of which is provided with a buckle 2, and the end of the pusher body 1 near the buckle 2 is provided with a propulsion component.

[0021] The propulsion assembly includes an extension tube 3 fixedly connected to the pusher body 1, a slide 4 fixedly connected to the extension tube 3, a pressure plate 5 rotatably connected to the slide 4 via a spring shaft, a drive plate 6 rotatably connected inside the pressure plate 5, a clearance opening on the side wall of the extension tube 3 near the pressure plate 5, a push plate 7 slidably connected to the slide 4, and the middle part of the push plate 7 rotatably connected to the drive plate 6, and a clamping assembly fixedly connected to the end of the extension tube 3 away from the pusher body 1;

[0022] In this design, during surgery, the surgeon places the occluder stent inside the catheter, then passes the catheter through the pusher body 1 and pushes it forward. Specifically, the surgeon inserts their index and middle fingers through the wristband 2, then supports the tube wall of the pusher body 1 with their ring and little fingers, and presses the pressure plate 5 with their thumb. As the pressure plate 5 moves towards the catheter, it rotates the drive plate 6, which in turn drives the pusher plate 7 to press the catheter, moving it towards the pusher body 1. When the surgeon releases their thumb, the spring shaft causes the pressure plate 5 to return to its original position. In the initial position, the push plate 7 does not press the catheter during this process, so that the push plate 7 and the drive plate 6 will not drive the catheter to move during the reset process. This method allows the surgeon to move a shorter distance each time when pushing the occluder stent and has greater controllability. It can effectively control the position of the catheter tip and achieve more precise implantation of the occluder stent. Moreover, the pressure of each press is small, and the operation can be completed very easily with just the thumb. It is suitable for use in surgical scenarios, reduces the need for subsequent adjustments, improves the efficiency of occluder stent implantation, shortens the operation time, facilitates the surgeon's operation, and also improves the safety of the operation.

[0023] Furthermore, the clamping assembly includes a sleeve 8 fixedly connected to the extension tube 3, a first compression spring 9 fixedly connected inside the sleeve 8, and an inner ring 10 fixedly connected to the end of the first compression spring 9 away from the extension tube 3. A second compression spring 11 is fixedly connected to the end of the inner ring 10 away from the first compression spring 9. A push ring is slidably connected to the sleeve 8, and the push ring is fixedly connected to the second compression spring 11. A plurality of elastic plates 12 are fixedly connected to the end of the push ring near the first compression spring 9.

[0024] Because the propulsion component moves the catheter a short distance in a single operation, during implantation surgery, when the occluder stent is far from the implantation site, the catheter needs to be pushed more quickly. Using this clamping component, the surgeon can press the propulsion ring with their thumb. This compresses the second compression spring 11, while multiple elastic plates 12 insert into the inner ring 10 and move towards each other to clamp the catheter. As the surgeon continues to press, the second compression spring 11 is also compressed. The propulsion ring, in conjunction with the inner ring 10 and the elastic plates 12, can move the catheter towards the propulsion unit, achieving the effect of pushing the catheter. After the surgeon releases their grip, the elastic potential energy of the first compression spring 9 and the second compression spring 11 will cause the inner ring 10 and the propulsion ring to return to their initial positions. Repeatedly pressing the propulsion ring can achieve a faster catheter push compared to the propulsion component.

[0025] Furthermore, the elastic sheet 12 is wedge-shaped, and an anti-slip groove is provided on the side where multiple elastic sheets 12 are close to each other. In this design, multiple elastic sheets 12 move towards each other under the drive of the inner wall of the inner ring 10. With the help of the protective groove, the tube can be moved more stably when clamping the tube.

[0026] Furthermore, an arc-shaped plate 13 is provided on the side of the extension tube 3 away from the relief port, and a ball bearing is embedded on the arc-shaped plate 13. The arc-shaped plate 13 and the ball bearing are used to reduce the friction between the guide tube and the inner wall of the extension tube 3, and reduce the resistance when the propulsion component drives the guide tube to move.

[0027] Furthermore, a damping sleeve 14 is provided inside the sleeve 8, and the inner ring 10 is slidably connected to the inner wall of the damping sleeve 14.

[0028] The friction between the damping sleeve 14 and the inner ring 10 is relatively large, which allows multiple elastic plates 12 to first engage with the inner ring 10 when the surgeon presses the push ring. Then, the elastic plates 12, while holding the catheter, drive the inner ring 10 to move. When the surgeon releases his finger, the push ring first resets under the action of the second compression spring 11, and the multiple elastic plates 12 release their grip on the catheter. Then, the inner ring 10 resets under the action of the first compression spring 9, preventing the catheter from moving away from the pusher body 1.

[0029] Furthermore, a pressure handle 15 is fixedly connected to one side of the push ring, and a groove is provided on the pressure handle 15. The extended pressure handle 15, which matches the groove, makes it easier for the surgeon to press the push ring.

[0030] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A pusher for a medical occluder stent, comprising a pusher body (1), characterized in that, One end of the pusher body (1) is provided with a buckle (2), and the end of the pusher body (1) near the buckle (2) is provided with a propulsion component; The propulsion assembly includes an extension tube (3) fixedly connected to the pusher body (1), a slide (4) fixedly connected to the extension tube (3), a pressure plate (5) rotatably connected to the slide (4) via a spring shaft, a drive plate (6) rotatably connected inside the pressure plate (5), a clearance opening is provided on the side wall of the extension tube (3) near the pressure plate (5), a push plate (7) is also slidably connected to the slide (4), and the middle part of the push plate (7) is rotatably connected to the drive plate (6), and a clamping assembly is fixedly connected to the end of the extension tube (3) away from the pusher body (1).

2. The pusher for a medical occlusion device stent according to claim 1, characterized in that, The clamping assembly includes a sleeve (8) fixedly connected to the extension tube (3). A first compression spring (9) is fixedly connected inside the sleeve (8), and an inner ring (10) is fixedly connected to the end of the first compression spring (9) away from the extension tube (3). A second compression spring (11) is fixedly connected to the end of the inner ring (10) away from the first compression spring (9). A push ring is slidably connected to the sleeve (8), and the push ring is fixedly connected to the second compression spring (11). A plurality of elastic plates (12) are fixedly connected to the end of the push ring near the first compression spring (9).

3. A pusher for a medical occlusion device stent according to claim 2, characterized in that, The elastic sheet (12) is wedge-shaped, and anti-slip grooves are provided on the side where multiple elastic sheets (12) are close to each other.

4. The pusher for a medical occluder stent according to claim 1, characterized in that, An arc-shaped plate (13) is provided on the side of the extension tube (3) away from the relief opening, and ball bearings are embedded on the arc-shaped plate (13).

5. A pusher for a medical occluder stent according to claim 2, characterized in that, A damping sleeve (14) is provided inside the sleeve (8), and the inner ring (10) is slidably connected to the inner wall of the damping sleeve (14).

6. A pusher for a medical occluder stent according to claim 2, characterized in that, A pressure handle (15) is fixedly connected to one side of the propulsion ring, and a groove is provided on the pressure handle (15).

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