Detection device for heart stent processing

Abstract

The utility model provides a detection device for heart stent processing, and belongs to the technical field of heart stents.The detection device comprises a supporting ring, a connecting cylinder is installed above the supporting ring, connecting frames are arranged on the connecting cylinder, a fixing rod is fixedly connected to the lowermost connecting frame, the fixing rod penetrates through the other connecting frames except the lowermost connecting frame, and the fixing rod is fixedly connected to the supporting ring. A spring is fixedly connected between every two adjacent connecting frames, supporting cylinders are welded to the peripheries of the connecting frames, movable rods are slidably connected into the supporting cylinders, elastic ropes are fixedly connected between the movable rods and the supporting cylinders, a supporting plate is fixedly connected to the movable rods, and a guide cylinder is arranged above the supporting plate. The problems that an existing detection device cannot detect the elastic performance of all parts of the heart stent and cannot adjust the detection interval of the device according to the interval of the annular structure of the heart stent are solved.

Description

A testing device for coronary stent fabrication Technical Field

[0001] This utility model relates to the field of cardiac stents, and more specifically, to a testing device for cardiac stent fabrication. Background Technology

[0002] Cardiac stents, also known as vascular stents, require strict adherence to dimensional accuracy, surface quality, and structural integrity during their manufacturing process. As a high-precision medical device, cardiac stents must meet extremely stringent quality standards to ensure their safety and effectiveness after implantation. Therefore, cardiac stent testing devices are necessary.

[0003] Utility model patent CN221426321U discloses a biodegradable cardiac stent performance testing device, including a support frame. A drive assembly is fixedly connected to the upper rear of the support frame. Fixing assemblies are fixedly connected to the left and right sides of the front of the drive assembly and the front of the upper end of the support frame. Clamping assemblies are slidably connected to the front of each of the three fixing assemblies. A simulated blood vessel is commonly arranged inside the three clamping assemblies, and a stent body is arranged on the inner surface of the simulated blood vessel. During use, the device can work with the fixing assemblies to drive the clamping assemblies to clamp simulated blood vessels of different diameters, expanding the device's application range. By fixing the position of the simulated blood vessel with the clamping assemblies located in the middle and then working with the drive assembly, the left and right sides of the stent body can be repeatedly bent downwards and upwards, increasing the speed of measuring the stent body's performance. Although the above device can clamp cardiac stents of different sizes, it cannot test the elasticity of different parts of the cardiac stent during use, nor can it adjust the detection spacing of the device according to the spacing of the annular structure of the cardiac stent.

[0004] Therefore, we have made improvements to this and proposed a testing device for cardiac stent fabrication. Summary of the Invention

[0005] The purpose of this invention is to address the problem that existing testing devices cannot test the elasticity of different parts of a cardiac stent, and cannot adjust the testing spacing of the device according to the spacing of the annular structure of the cardiac stent.

[0006] To achieve the above-mentioned objectives, this utility model provides the following technical solution:

[0007] A testing device for cardiac stent fabrication to improve the above-mentioned problems.

[0008] The application is as follows:

[0009] The device includes a support ring, a connecting cylinder mounted above the support ring, a connecting frame mounted on the connecting cylinder, a fixing rod fixedly connected to the lowest connecting frame, the fixing rod passing through all the connecting frames except the lowest one, a spring fixedly connected between adjacent connecting frames, support cylinders welded around the connecting frame, a movable rod slidably connected inside the support cylinder, a tension rope fixedly connected between the movable rod and the support cylinder, a support plate fixedly connected to the movable rod, and a guide cylinder mounted above the support plate.

[0010] As a preferred technical solution of this application, a support rod is slidably installed between the support ring and the connecting cylinder, and an opening is provided on the side of the connecting cylinder for the support rod to slide.

[0011] As a preferred technical solution of this application, support blocks are fixedly connected to all four sides of the connecting cylinder, guide rods are fixedly connected to the support blocks, and connecting plates are slidably installed on the outer side of the guide rods.

[0012] As a preferred technical solution of this application, the connecting frame is provided with a placement groove, a counterweight is placed in the placement groove, the counterweight is provided with a groove, and a protrusion is fixedly connected to the bottom of the counterweight.

[0013] As a preferred technical solution of this application, the counterweights are symmetrically distributed on both sides of the uppermost connecting frame, and the outer wall of the counterweights and the inner wall of the placement groove are in close contact with each other.

[0014] As a preferred technical solution of this application, the connecting plate, guide rod and support block are all evenly distributed along the circumference of the connecting cylinder, and the position and number of the connecting plate correspond one-to-one with the position and number of the movable rod.

[0015] As a preferred technical solution of this application, the support plate is arc-shaped, and the support plate forms an elastic structure with the support cylinder through the movable rod and the tension rope.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0017] In the scheme of this application:

[0018] 1. The device is equipped with a guide cylinder, a connecting frame, and a support plate. The cardiac stent is retracted through the guide cylinder, and then the support plate holds the side of the cardiac stent. By observing the distance the movable rod extends outward at different positions, the elasticity of the cardiac stent can be tested, which enhances the adaptability of the device and solves the problem that existing cardiac stents cannot test the elasticity performance of various parts.

[0019] 2. By using a fixed rod and springs, the detection position can be adjusted. By pressing down on the uppermost connecting frame, the downward movement of the uppermost connecting frame is changed, causing the springs to be compressed synchronously, thus changing the spacing between adjacent connecting frames. This adapts to the spacing of the annular structures on the cardiac stent, solving the problem that existing cardiac stent detection devices cannot adjust the detection spacing according to the spacing of the annular structures on the cardiac stent. This device has the advantage of a wider range of applications. Attached Figure Description

[0020] Figure 1 is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 is an enlarged schematic diagram of the structure at point A in Figure 1;

[0022] Figure 3 is a schematic diagram of the connection structure between the movable rod and the support plate of this utility model;

[0023] Figure 4 is a schematic diagram of the connection structure between the connecting cylinder and the support block of this utility model;

[0024] Figure 5 is an enlarged schematic diagram of the structure at point B in Figure 4.

[0025] The diagram shows: 1. Support ring; 2. Connecting cylinder; 3. Support rod; 4. Connecting frame; 5. Placement slot; 6. Counterweight block; 7. Groove; 8. Protrusion; 9. Fixing rod; 10. Spring; 11. Guide cylinder; 12. Support cylinder; 13. Movable rod; 14. Elastic rope; 15. Connecting plate; 16. Guide rod; 17. Support block; 18. Support plate. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model.

[0027] Therefore, the following detailed description of the embodiments of this utility model is not intended to limit the scope of the claimed utility model, but merely to illustrate some embodiments of the utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0028] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the present invention can be combined with each other.

[0029] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0030] In the description of this utility model, it should be noted that the terms "upper," "lower," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use, or the orientation or positional relationship commonly understood by those skilled in the art. These terms are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this utility model. In addition, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0031] Example 1:

[0032] As shown in Figures 1-5, this embodiment proposes a testing device for cardiac stent fabrication, including a support ring 1, a connecting cylinder 2 installed above the support ring 1, a connecting frame 4 provided on the connecting cylinder 2, a fixing rod 9 fixedly connected to the bottommost connecting frame 4, the fixing rod 9 passing through the remaining connecting frames 4 except the bottommost one, a spring 10 fixedly connected between adjacent connecting frames 4, support cylinders 12 welded around the connecting frame 4, a movable rod 13 slidably connected inside the support cylinder 12, a tension rope 14 fixedly connected between the movable rod 13 and the support cylinder 12, a support plate 18 fixedly connected to the movable rod 13, and a guide cylinder 11 provided above the support plate 18. The device can lower the cardiac stent into the device for testing via the guide tube 11. The spacing between adjacent connecting frames 4 is adjusted according to the spacing of the annular structures on the cardiac stent. Pressing down the uppermost connecting frame 4 causes the springs 10 to be compressed synchronously, thus adapting to different cardiac stents for testing. During testing, the support plate 18 on the movable rod 13 is pushed against the outside of the cardiac stent, and the elasticity of various parts of the cardiac stent is tested based on the sliding position of the movable rod 13.

[0033] Example 2:

[0034] The following section provides a further description of the scheme in Example 1, focusing on its specific working method. See the description below for details:

[0035] As shown in Figures 1 and 4, in a preferred embodiment, based on the above method, a support rod 3 is slidably installed between the support ring 1 and the connecting cylinder 2. The support rod 3 can adjust the support position. The side of the connecting cylinder 2 is provided with an opening for the support rod 3 to slide. Alternatively, the two support rods 3 can be moved to the two sides of the opening respectively so that the cardiac stent after testing can be removed later.

[0036] As shown in Figure 4, in a preferred embodiment, based on the above method, support blocks 17 are fixedly connected to all four sides of the connecting cylinder 2, and guide rods 16 are fixedly connected to the support blocks 17. A connecting plate 15 is slidably installed on the outer side of the guide rods 16. The support blocks 17 ensure that the connecting plate 15 can move horizontally, and the guide rods 16 ensure that the connecting plate 15 can move horizontally, thus ensuring the overall stability of the device.

[0037] As shown in Figures 1 and 2, in a preferred embodiment, based on the above method, a placement groove 5 is provided on the connecting frame 4, a counterweight 6 is placed in the placement groove 5, a groove 7 is provided on the counterweight 6, and a protrusion 8 is fixedly connected to the bottom of the counterweight 6. The counterweight 6 is placed in the placement groove 5, thereby pressing down the uppermost connecting frame 4, so as to adapt to the cardiac stent with different annular support structures for subsequent testing.

[0038] As shown in Figure 2, in a preferred embodiment, based on the above method, the counterweights 6 are symmetrically distributed on both sides of the uppermost connecting frame 4, and the outer wall of the counterweights 6 and the inner wall of the placement groove 5 are in contact with each other to ensure that the counterweights 6 can be stably installed in the placement groove 5, while ensuring that the center of gravity of the connecting frame 4 is centered.

[0039] As shown in Figure 4, in a preferred embodiment, based on the above method, the connecting plate 15, guide rod 16 and support block 17 are all evenly distributed along the circumference of the connecting cylinder 2. The position and number of the connecting plate 15 correspond one-to-one with the position and number of groups of the movable rod 13, ensuring that the connecting plate 15 at each position can be pushed outward by the movable rod 13 at the corresponding position. Subsequently, the uniformity of the elasticity of the cardiac stent can be judged by whether the connecting plate 15 fits with each movable rod 13.

[0040] As shown in Figure 3, in a preferred embodiment, based on the above method, the support plate 18 is further arc-shaped. The support plate 18 forms an elastic structure with the support cylinder 12 through the movable rod 13 and the tension rope 14. The elastic structure on the device allows the support plate 18 to be pushed outward, and also allows each support plate 18 and movable rod 13 to be reset after the detection is completed and the cardiac stent is removed.

[0041] Specifically, in use, the testing device for cardiac stent processing is as follows: As shown in Figures 1-4, the support ring 1 and the connecting cylinder 2 support the entire device. The opening on the side of the connecting cylinder 2 facilitates the subsequent placement and removal of the cardiac stent. During use, the support position can be adjusted by sliding the support rod 3. The cardiac stent is guided by the guide cylinder 11, allowing it to gradually shrink along the gradually contracting inner diameter of the guide cylinder 11, so that the cardiac stent abuts against the support plate 18 on the connecting frame 4. After the support plate 18 is pushed outward, the tension rope 14 between the support cylinder 12 and the movable rod 13 is stretched, so that the movable rod 13 can be reset after the test is completed.

[0042] As shown in Figures 3-5, by observing the position of each movable rod 13 relative to the connecting plate 15, the uniformity of the elastic force at various points on the cardiac stent can be detected. The spacing between adjacent connecting frames 4 can be adjusted according to the spacing of each annular structure on the cardiac stent. The uppermost connecting frame 4 can be pressed down, or a counterweight 6 can be placed in the placement groove 5 within the uppermost connecting frame 4. Different numbers of counterweights 6 can be stacked through the grooves 7 and protrusions 8, so that the springs 10 at various points are compressed synchronously with different pressures. This allows for testing of cardiac stents with different support spacings. During testing, the support plate 18 on the movable rod 13 is pushed against the outside of the cardiac stent, and the elastic force at different heights of the movable rod 13 is compared to see if they all abut against the support plate 18.

[0043] The above embodiments are only used to illustrate the present utility model and are not intended to limit the technical solutions described in the present utility model. Although the present utility model has been described in detail with reference to the above embodiments, the present utility model is not limited to the specific embodiments described above. Therefore, any modifications or equivalent substitutions to the present utility model, and all technical solutions and improvements that do not depart from the spirit and scope of the invention, are covered within the scope of the claims of the present utility model.

Claims

1. A testing device for cardiac stent fabrication, comprising a support ring (1), characterized in that, A connecting cylinder (2) is installed above the support ring (1). A connecting frame (4) is provided on the connecting cylinder (2). A fixing rod (9) is fixedly connected to the bottom connecting frame (4). The fixing rod (9) passes through the other connecting frames (4) except the bottom one. A spring (10) is fixedly connected between two adjacent connecting frames (4). Support cylinders (12) are welded around the connecting frame (4). A movable rod (13) is slidably connected inside the support cylinder (12). A tension rope (14) is fixedly connected between the movable rod (13) and the support cylinder (12). A support plate (18) is fixedly connected to the movable rod (13). A guide cylinder (11) is provided above the support plate (18).

2. The detection device for cardiac stent fabrication according to claim 1, characterized in that, A support rod (3) is slidably installed between the support ring (1) and the connecting cylinder (2), and the side of the connecting cylinder (2) is provided with an opening for the support rod (3) to slide.

3. The detection device for cardiac stent fabrication according to claim 1, characterized in that, Support blocks (17) are fixedly connected to all four sides of the connecting cylinder (2). A guide rod (16) is fixedly connected to the support block (17). A connecting plate (15) is slidably installed on the outer side of the guide rod (16).

4. The testing device for cardiac stent fabrication according to claim 1, characterized in that, The connecting frame (4) has a placement groove (5), a counterweight (6) is placed in the placement groove (5), the counterweight (6) has a groove (7), and a protrusion (8) is fixedly connected to the bottom of the counterweight (6).

5. The testing device for cardiac stent fabrication according to claim 4, characterized in that, The counterweights (6) are symmetrically distributed on both sides of the uppermost connecting frame (4), and the outer wall of the counterweights (6) and the inner wall of the placement groove (5) are in contact with each other.

6. The testing device for cardiac stent fabrication according to claim 3, characterized in that, The connecting plate (15), guide rod (16) and support block (17) are all evenly distributed along the circumference of the connecting cylinder (2). The position and number of the connecting plate (15) correspond one-to-one with the position and number of the movable rod (13).

7. The testing device for cardiac stent fabrication according to claim 1, characterized in that, The support plate (18) is arc-shaped, and the support plate (18) forms an elastic structure with the support cylinder (12) through the movable rod (13) and the elastic rope (14).

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