Device for detecting connection strength of needle and thread
By designing a device that includes a main support side plate, a tension spring, and a suture guide assembly, the problems of inconvenience and inaccuracy in needle-thread connection strength testing in the prior art are solved, and efficient and accurate needle-thread connection strength testing is achieved.
Patent Information
- Application Number
- CN202422638103.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-31
- Publication Date
- 2025-10-31
- Estimated Expiration
- 2034-10-31
AI Technical Summary
Existing devices for testing the strength of needle and thread connections are inconvenient when changing thread specifications, the testing method is not accurate enough, and the needle and thread connection is prone to detachment, affecting the accuracy of the test.
A device comprising a main support side plate, a tension spring, a clamp fixing plate, and a suture needle fixing block was designed. A suture guide assembly and a gap adjustment assembly were set up. The tension was measured by the deformation of the tension spring, and the reading was combined with the scale line reading to ensure the accuracy and convenience of the detection.
It enables efficient and accurate detection of needle-thread connection strength, avoiding problems such as manual adjustment and needle-thread detachment, and improving detection efficiency and accuracy.
Smart Images
Figure CN223500779U_ABST
Abstract
Description
Technical fields:
[0001] This utility model belongs to the field of medical device technology, specifically relating to a device for detecting the strength of needle and thread connections. Background technology:
[0002] In the production of sutures, the crimping of the suture needle is a crucial step. The quality of the crimped suture needle directly affects its clinical use, therefore, it is necessary to test the strength of the needle-suture connection.
[0003] Currently common devices for testing the strength of needle-thread connections are shown in the appendix. Figure 6 In application, the part where the needle and thread are joined is placed in the slot, and pulling the thread lifts the counterweight. Different counterweights are selected according to different needle and thread specifications. If the counterweight can be lifted smoothly, it proves that the needle and thread connection strength is qualified.
[0004] However, the aforementioned device for detecting the strength of the needle-thread connection has the following drawbacks: 1) The position of the slot needs to be readjusted every time a different suture specification is changed, which is inconvenient. 2) The detection method is not accurate enough. For this structure, the direction of the applied force must be tangent to the direction of movement. If the direction of the force changes, the magnitude of the force will change, thus affecting the accuracy of the detection. 3) After the needle-thread connection is placed in the slot, it is easy to fall out of the slot during the application of force.
[0005] Based on the above, this utility model provides a device for detecting the strength of needle-thread connections to solve the above problems. Utility Model Content:
[0006] The purpose of this invention is to address the shortcomings of existing technologies by providing a device for detecting the strength of needle-thread connections, thereby improving the efficiency and accuracy of detecting the strength of needle-thread connections.
[0007] To achieve the above-mentioned technical objectives, the present invention adopts the following technical solution:
[0008] This utility model provides a device for detecting the strength of a needle-thread connection, including a main support side plate, a tension spring, a clamp fixing plate, and a suture needle fixing block; one end of the tension spring is fixedly connected to the main support side plate, and the other end is connected to the clamp fixing plate; the suture needle fixing block is fixedly mounted on the clamp fixing plate for fixing the suture needle; a suture thread is connected to the suture needle, and pulling the suture thread can drive the suture needle and the clamp fixing plate to move along the axis of the tension spring, and generate tension on the tension spring to cause it to deform.
[0009] Furthermore, the device is also provided with a suture guide assembly; the suture guide assembly is disposed on the clamp fixing plate and includes a main suture clamp block and a secondary suture clamp block, and a gap for the suture to pass through is provided between the main suture clamp block and the secondary suture clamp block, the width of the gap being smaller than the outer diameter of the suture needle.
[0010] Furthermore, the device is also equipped with a gap adjustment component, which adjusts the width of the gap between the main suture clamp and the secondary suture clamp.
[0011] Furthermore, the gap adjustment assembly includes a spring, a spring fixing shaft, a spring baffle, and a retaining ring; the main thread clamp is fixedly mounted on the clamp fixing plate, the main thread clamp has a threaded hole, and the secondary thread clamp has a smooth hole; the spring fixing shaft includes an integral threaded section and a smooth shaft section, the threaded section of the spring fixing shaft passes through the smooth hole of the secondary thread clamp and is threadedly connected to the main thread clamp, and the end of the smooth shaft section of the spring fixing shaft is fixedly connected to the spring baffle through a retaining ring; the secondary thread clamp is sleeved on the outer surface of the smooth shaft section of the spring fixing shaft and can move along the smooth shaft section of the spring fixing shaft; the spring is sleeved on the outer surface of the smooth shaft section of the spring fixing shaft, one end is connected to the spring baffle, the other end is connected to the secondary thread clamp, and the spring is in a compressed state.
[0012] Furthermore, the device is also provided with a plug for maintaining the gap width. The thickness of the plug is not less than the diameter of the suture. The plug is detachably disposed between the main suture clamp and the secondary suture clamp.
[0013] Furthermore, the device is also equipped with a guide rail and a secondary support side plate; the secondary support side plate is parallel to the main support side plate, the guide rail is fixed between the secondary support side plate and the main support side plate, and the guide rail is perpendicular to the secondary support side plate and the main support side plate; the clamp fixing plate is equipped with a slider, and the clamp fixing plate is slidably connected to the guide rail through the slider.
[0014] Furthermore, the clamp fixing plate has an L-shaped cross-section, including an integral horizontal section and a vertical section; the slider is installed on the horizontal section, and the horizontal section is slidably connected to the guide rail through the slider; the vertical section is connected to a tension spring, and the tension spring is parallel to the guide rail.
[0015] Furthermore, a guide rail support plate is also provided, with both ends of the guide rail support plate being vertically and fixedly connected to the secondary support side plate and the main support side plate, respectively. The guide rail is fixedly installed on the guide rail support plate; the guide rail support plate is provided with scale lines.
[0016] Furthermore, the two ends of the tension spring are connected to the main support side plate and the clamp fixing plate respectively through tension spring fixing posts.
[0017] Furthermore, the clamp fixing plate is provided with a positioning groove, and the main stitch clamp block is fixedly installed in the positioning groove.
[0018] The beneficial effects of this utility model are:
[0019] (1) This utility model is equipped with a suture needle fixing block and a tension spring assembly, and a scale line is set on the guide rail support plate. It can drive the tension spring to deform by pulling the suture thread, and obtain the tension force at the needle-thread connection by reading the scale line. The design is reasonable and the structure is stable. It can prevent the suture needle from wobbling left and right during the tension test and can accurately test the needle-thread connection strength.
[0020] (2) This invention achieves higher accuracy in testing the strength of needle-thread connections and can meet the testing requirements of different wire diameters without manual adjustment. The device is easy to operate and has a simple structure, which can greatly improve the detection efficiency of needle-thread connections. Attached image description:
[0021] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this utility model;
[0022] Figure 2 This is a schematic diagram of the guide rail support plate and the support side plate according to an embodiment of the present utility model;
[0023] Figure 3 This is a schematic diagram of the guide rail installation according to an embodiment of this utility model;
[0024] Figure 4 This is an exploded view of the suture guide assembly according to an embodiment of the present invention;
[0025] Figure 5 This is a diagram showing the working state of an embodiment of this utility model;
[0026] Figure 6 This is a schematic diagram of a needle-thread connection testing device in the prior art;
[0027] The labels in the attached diagram are:
[0028] 1-Main support side plate; 2-Secondary support side plate; 3-Guide rail support plate; 4-Guide rail; 5-Slider; 6-Clamp fixing plate; 7-Sewing needle fixing block; 8-Main sewing clamp block; 9-Spring fixing shaft; 10-Secondary sewing clamp block; 11-Spring; 12-Spring baffle; 13-Tension spring fixing post; 14-Tension spring; 15-Plug; 16-Snap ring. Detailed implementation method:
[0029] 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. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.
[0030] Example 1
[0031] Reference Figures 1-5 This utility model provides a device for detecting the strength of a needle-thread connection, including a main support side plate 1, a secondary support side plate 2, a guide rail 4, a tension spring 14, a clamp fixing plate 6, a guide rail support plate 3, and a needle fixing block 7.
[0032] The main support side plate 1 is parallel to the secondary support side plate 2. The two ends of the guide rail support plate 3 are perpendicularly fixed to the secondary support side plate 2 and the main support side plate 1, respectively. The guide rail support plate 3 is provided with scale lines. The guide rail 4 is fixedly installed on the guide rail support plate 3.
[0033] The clamp fixing plate 6 has an L-shaped cross-section, comprising an integral horizontal section and a vertical section. A slider 5 is provided on the lower surface of the horizontal section, and the horizontal section is slidably connected to the guide rail 4 through the slider 5. The two ends of the tension spring 14 are respectively connected to the main support side plate 1 and the vertical section of the clamp fixing plate 6 through tension spring fixing posts 13, and the tension spring 14 is parallel to the guide rail 4.
[0034] The suture needle fixing block 7 is fixedly mounted on the clamp fixing plate 6 to fix the suture needle and prevent it from wobbling from side to side during the tensile test. The suture needle fixing block 7 has a slot in which the suture needle is engaged. A suture thread is connected to the suture needle; pulling the suture thread causes the suture needle and the clamp fixing plate 6 to move along the axis of the tension spring 14. The direction of the force on the suture thread is in the same plane as the axis of the spring 14, generating a tensile force on the tension spring 14 and causing it to deform.
[0035] In application, the suture needle is connected to the suture thread, and the suture needle is installed on the suture needle fixing block 7. Pulling the suture thread causes the suture needle and the clamp fixing plate 6 to slide along the guide rail 4, and the sliding direction is consistent with the extension direction of the tension spring 14 axis. At this time, the tension spring 14 deforms. The deformation distance of the tension spring 14 is obtained according to the scale line on the guide rail support plate 3. According to Hooke's law, the tension at the needle-thread connection point at different scales is obtained.
[0036] Example 2
[0037] The main structure of this embodiment is the same as that of embodiment 1, except that a suture guide assembly is also provided in this embodiment.
[0038] Specifically, refer to Figure 1 , Figure 4 and Figure 5 In this embodiment, the suture guide assembly is mounted on the clamp fixing plate 6, including a main suture clamping block 8 and a secondary suture clamping block 10. A gap for the suture to pass through is provided between the main suture clamping block 8 and the secondary suture clamping block 10, and the width of the gap is smaller than the outer diameter of the suture needle, so the suture needle cannot pass through the gap. This gap can both guide the suture and prevent it from being pinched or damaged.
[0039] Example 3
[0040] The main structure of this embodiment is the same as that of embodiment 2. The difference is that in this embodiment, a gap adjustment component is also provided for adjusting the gap width between the main suture clamping block 8 and the secondary suture clamping block 10.
[0041] Specifically, refer to Figures 4-5 In this embodiment, the gap adjustment assembly includes a spring 11, a spring fixing shaft 9, a spring baffle 12, and a retaining ring 16.
[0042] The main thread clamping block 8 is fixedly mounted on the clamp fixing plate 6 (the main thread clamping block 8 is fixedly mounted in the positioning groove provided on the clamp fixing plate 6). The main thread clamping block 8 is provided with a threaded hole, and the secondary thread clamping block 10 is provided with a smooth hole. The spring fixing shaft 9 includes an integral threaded section and a smooth shaft section. The threaded section of the spring fixing shaft 9 passes through the smooth hole of the secondary thread clamping block 10 and is threadedly connected to the main thread clamping block 8. The end of the smooth shaft section of the spring fixing shaft 9 is fixedly connected to the spring baffle 12 by a snap ring 16. The secondary thread clamping block 10 is sleeved on the outer surface of the smooth shaft section of the spring fixing shaft 9 and can move along the smooth shaft section of the spring fixing shaft 9. The spring 11 is sleeved on the outer surface of the smooth shaft section of the spring fixing shaft 9, with one end connected to the spring baffle 12 and the other end connected to the secondary thread clamping block 10, and the spring 11 is in a compressed state.
[0043] In this embodiment, a plug 15 for maintaining the gap width is also provided. The thickness of the plug 15 is not less than the diameter of the suture. The plug 15 is detachably disposed between the main suture clamp 8 and the secondary suture clamp 10. The plug 15 can be made with different thicknesses according to the diameter of the suture. Placing the plug 15 into the gap between the main and secondary suture clamps can prevent the suture from being pinched when the main and secondary clamps are in contact.
[0044] Before testing, select a suitable plug 15 according to the suture diameter and push the suture clamp 10 towards the spring baffle 12. Place the plug 15 into the lower gap between the main suture clamp 8 and the secondary suture clamp 10. Then, place the suture to be tested into the upper gap between the main suture clamp 8 and the secondary suture clamp 10. Release the secondary suture clamp 10; under the action of the spring 11, the secondary suture clamp 10 will clamp the suture in the gap. The gap allows the suture to pass through but not the needle. Pulling the suture at this point can achieve the required needle-thread connection strength test.
[0045] The above are merely preferred embodiments of this utility model. The scope of protection of this utility model is not limited to the above embodiments. All technical solutions within the scope of this utility model are within the scope of protection of this utility model. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should be considered within the scope of protection of this utility model.
Claims
1. A device for detecting the strength of a needle-thread connection, characterized in that, It includes a main support side plate (1), a tension spring (14), a clamp fixing plate (6), and a sewing needle fixing block (7); One end of the tension spring (14) is fixedly connected to the main support side plate (1), and the other end is connected to the clamp fixing plate (6); The suture needle fixing block (7) is fixedly mounted on the clamp fixing plate (6) for fixing the suture needle; the suture needle is connected to a suture thread, and pulling the suture thread can drive the suture needle and the clamp fixing plate (6) to move along the axis of the tension spring (14) and generate tension on the tension spring (14) to deform it.
2. The device for detecting the strength of a needle-thread connection according to claim 1, characterized in that, It also features a suture guide assembly; The suture guide assembly is mounted on the clamp fixing plate (6) and includes a main suture clamp (8) and a secondary suture clamp (10). A gap for the suture to pass through is provided between the main suture clamp (8) and the secondary suture clamp (10). The width of the gap is smaller than the outer diameter of the suture needle.
3. The device for detecting the strength of a needle-thread connection according to claim 2, characterized in that, A gap adjustment component is also provided, and the width of the gap between the main suture clamp (8) and the secondary suture clamp (10) is adjusted by the gap adjustment component.
4. The device for detecting the strength of a needle-thread connection according to claim 3, characterized in that, The gap adjustment assembly includes a spring (11), a spring fixing shaft (9), a spring baffle (12), and a retaining ring (16); The main suture clamp (8) is fixedly mounted on the clamp fixing plate (6). The main suture clamp (8) is provided with a threaded hole, and the secondary suture clamp (10) is provided with a smooth hole. The spring fixing shaft (9) includes an integral threaded section and a smooth shaft section. The threaded section of the spring fixing shaft (9) passes through the smooth hole of the secondary suture clamp (10) and is threadedly connected to the main suture clamp (8). The end of the smooth shaft section of the spring fixing shaft (9) is fixedly connected to the spring baffle (12) through a snap ring (16). The secondary suture clamp (10) is sleeved on the outer surface of the smooth shaft section of the spring fixing shaft (9) and can move along the smooth shaft section of the spring fixing shaft (9). The spring (11) is sleeved on the outer surface of the smooth shaft section of the spring fixing shaft (9), with one end connected to the spring baffle (12) and the other end connected to the secondary suture clamp (10), and the spring (11) is in a compressed state.
5. The device for detecting the strength of a needle-thread connection according to claim 3, characterized in that, A plug (15) for maintaining the width of the gap is also provided. The thickness of the plug (15) is not less than the diameter of the suture. The plug (15) is detachably disposed between the main suture clamp (8) and the secondary suture clamp (10).
6. The device for detecting the strength of a needle-thread connection according to claim 1, characterized in that, It is also equipped with guide rails (4) and secondary support side plates (2); The secondary support side plate (2) is parallel to the main support side plate (1), and the guide rail (4) is fixed between the secondary support side plate (2) and the main support side plate (1), and the guide rail (4) is perpendicular to the secondary support side plate (2) and the main support side plate (1); the clamp fixing plate (6) is provided with a slider (5), and the clamp fixing plate (6) is slidably connected to the guide rail (4) through the slider (5).
7. The device for detecting the strength of a needle-thread connection according to claim 6, characterized in that, The clamp fixing plate (6) has an L-shaped cross section, including an integral horizontal section and a vertical section; The slider (5) is installed on the horizontal section, and the horizontal section is slidably connected to the guide rail (4) through the slider (5); The vertical section is connected to the tension spring (14), and the tension spring (14) is parallel to the guide rail (4).
8. The device for detecting the strength of a needle-thread connection according to claim 6, characterized in that, A guide rail support plate (3) is also provided. The two ends of the guide rail support plate (3) are vertically fixedly connected to the auxiliary support side plate (2) and the main support side plate (1) respectively. The guide rail (4) is fixedly installed on the guide rail support plate (3). The guide rail support plate (3) is provided with scale lines.
9. The device for detecting the strength of a needle-thread connection according to claim 1, characterized in that, The two ends of the tension spring (14) are connected to the main support side plate (1) and the clamp fixing plate (6) respectively through the tension spring fixing post (13).
10. The device for detecting the strength of a needle-thread connection according to claim 2, characterized in that, The clamp fixing plate (6) is provided with a positioning groove, and the main clamping block (8) of the sewing thread is fixedly installed in the positioning groove.