Tensile machine for testing medical guide wire

Abstract

The utility model discloses a tensile machine for testing a medical guide wire, which comprises a single-column tensile testing machine body, the upper end of the single-column tensile testing machine body is provided with a movable cross beam, the bottom side of the movable cross beam is fixedly connected with an upper fixed seat, the lower end of the single-column tensile testing machine body is fixedly connected with a lower fixed seat, and the lower fixed seat is fixedly connected with a movable cross beam. Clamping tables are fixedly connected to the ends of the upper fixing base and the lower fixing base, clamping grooves are formed in one ends of the clamping tables, telescopic rods are fixedly connected to one ends of the clamping tables, connecting blocks are fixedly connected to one ends of the telescopic rods, connecting rods are arranged on the outer sides of the connecting blocks, and winding rods are fixedly connected to the bottoms of one ends of the connecting rods. According to the medical guide wire end clamping device, through the arrangement of the clamping table, the clamping groove, the clamping block, the telescopic rod, the connecting rod, the winding rod, the first spring, the second sliding groove, the connecting block, the second spring and the transparent shade, the fastening performance of clamping the end of a medical guide wire is improved, and meanwhile shielding protection can be conducted during testing.

Description

Technical Field

[0001] This utility model relates to the technical field of a tensile testing machine for testing medical guidewires, and more particularly to a tensile testing machine for testing medical guidewires. Background Technology

[0002] Medical guidewires are critical medical devices widely used in the medical field. They are used for important medical procedures such as catheter insertion, catheter replacement, and vascular cannulation. Tensile testing of medical guidewires aims to evaluate their fracture strength. Fracture strength is a key indicator of guidewire performance and directly relates to the safety and success of medical procedures.

[0003] Chinese patent publication number CN219319930U discloses a tensile testing machine for medical guidewires, including a main control cabinet and a stretching mechanism. The stretching mechanism includes a first clamping structure and a second clamping structure for holding both ends of the medical guidewire under test, a fixing component for fixing the first clamping structure, a movable device connected to the second clamping structure, and a driving component for driving the movable device to move up and down to stretch the medical guidewire under test. The first and second clamping structures are arranged in the same vertical direction. A tension sensor is provided at the bottom of the fixing component that fixes the first clamping structure. The main control cabinet is electrically connected to the driving component to control the stretching action of the stretching mechanism. This utility model, using the above-described solution, stretches the guidewire upwards at a constant speed through the stretching moving device, recording the tensile force and displacement until the guidewire fails.

[0004] This invention has a simple structure, is easy to implement, and has good practicality.

[0005] Existing tensile testing machines for medical guidewires suffer from insufficient clamping strength at the ends, making the thin guidewires prone to slippage or loosening, thus affecting testing efficiency. Furthermore, the lack of safety precautions during testing poses a risk of injury to workers if a broken portion of the guidewire breaks off. To overcome these shortcomings, this invention provides a tensile testing machine for medical guidewires. Utility Model Content

[0006] The purpose of this invention is to address the shortcomings of existing technologies by proposing a tensile testing machine for medical guidewires.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: a tensile testing machine for testing medical guidewires, comprising a single-column tensile testing machine body, a movable crossbeam provided at the upper end of the single-column tensile testing machine body, an upper fixed seat fixedly connected to the bottom side of the movable crossbeam, and a lower fixed seat fixedly connected to the lower end of the single-column tensile testing machine body at a position corresponding to the upper fixed seat. Clamping platforms are fixedly connected to the ends of both the upper and lower fixed seats. A clamping groove is provided at one end of each clamping platform, and a clamping block is provided within the clamping groove. A one-way screw is rotatably connected to one side of each clamping block. One end of the rod is fixedly connected to a throttle handle through the side wall of the clamping platform. One end of the clamping platform is fixedly connected to a telescopic rod. One end of the telescopic rod is fixedly connected to a connecting block. A connecting rod is provided on the outside of the connecting block. A second sliding groove is opened on the bottom side of one end of the connecting rod. One end of the connecting block is slidably connected in the second sliding groove. A winding rod is fixedly connected to the bottom of one end of the connecting rod. A crossbar is fixedly connected to the upper end of the single-column tensile testing machine body. A first sliding groove is opened on one side of the crossbar. U-shaped sliders are symmetrically slidably connected to both ends of the first sliding groove. A transparent cover is fixedly connected to the top of each U-shaped slider.

[0008] Furthermore, one end of the one-way screw is threadedly connected to the side wall of the clamping platform.

[0009] Furthermore, the two ends of the clamping groove are symmetrically fixedly connected with limiting rods, and the limiting rods are all arranged parallel to the one-way screws. The two ends of the clamping block are slidably connected to the corresponding limiting rods.

[0010] Furthermore, a bidirectional screw is rotatably connected inside the first groove, and the two ends of the bidirectional screw are respectively threaded to the corresponding U-shaped slider. A knob is rotatably connected to one side of the crossbar at the position corresponding to the bidirectional screw, and one end of the bidirectional screw passes through the side wall of the crossbar and is fixedly connected to the knob.

[0011] Furthermore, a first spring is sleeved around the telescopic rod, and the two ends of the first spring are fixedly connected to the clamping platform and the connecting block, respectively. The connecting rod has an L-shaped structure.

[0012] Furthermore, a guide rod is fixedly connected inside the second groove, the connecting block is slidably connected to the guide rod, and a second spring is sleeved around one end of the guide rod near the winding rod. The two ends of the second spring are fixedly connected to the connecting block and the connecting rod, respectively.

[0013] The beneficial effects of this utility model are:

[0014] When in use, this utility model provides a tensile testing machine for medical guidewires, which has the following advantages:

[0015] 1. In this solution, a lower fixed seat, a movable crossbeam, an upper fixed seat, a clamping platform, a clamping groove, a one-way screw, a clamping block, a limiting rod, a throttle, a telescopic rod, a connecting rod, a winding rod, a first spring, a second sliding groove, a connecting block, a guide rod, and a second spring are provided. The two ends of the medical guidewire are wound around the upper and lower winding rods respectively. Pressing the connecting rod towards the clamping platform compresses the telescopic rod and the first spring, pressing the winding rod into the clamping groove. Then, rotating the throttle rotates the one-way screw, causing the clamping block to press and hold the winding rod and connecting rod after the medical guidewire is wound around it. The connecting rod is compressed and... Relative sliding occurs between the connecting blocks, i.e., the connecting rod slides towards the telescopic rod side. At this time, the second spring is compressed until the wound rod after the medical guide wire is wrapped is clamped between the clamping block and the side wall of the clamping groove. In this way, the two ends of the medical guide wire are clamped in the upper and lower clamping platforms respectively, which improves the tightness of the clamping of the end of the medical guide wire and avoids the end of the medical guide wire from falling off or loosening during the tensile test, thus affecting the test efficiency. After the test, the handle is turned in the opposite direction, the clamping block releases the wound rod, and the first and second springs return to their original extension, thereby driving the connecting rod and the wound rod to quickly return to their original position for easy use next time.

[0016] 2. In this solution, a crossbar, a first slide groove, a bidirectional screw, a U-shaped slider, a transparent cover, and a knob are provided. Rotating the knob drives the bidirectional screw to rotate, which in turn drives the U-shaped sliders on both sides to move towards each other. During the tensile test, the transparent cover is closed to provide shielding and protection, preventing the broken part of the medical guidewire from popping out and causing injury to the staff, thus improving safety. Attached Figure Description

[0017] To more clearly illustrate the technical solution of this utility model, the drawings used in the description of the specific embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 : A schematic diagram of the overall structure of this utility model;

[0019] Figure 2 : A schematic diagram of the structure of this utility model after removing the transparent mask;

[0020] Figure 3 : Front view of this utility model;

[0021] Figure 4 : A schematic diagram of the clamping structure of this utility model;

[0022] Figure 5 : Schematic diagram of the bottom connection of the connecting rod of this utility model.

[0023] The attached figures are labeled as follows:

[0024] 1. Single-column tensile testing machine body; 2. Lower fixed seat; 3. Moving crossbeam; 4. Upper fixed seat; 5. Clamping platform; 6. Crossbar; 7. First slide groove; 8. Bidirectional screw; 9. U-shaped slider; 10. Transparent cover; 11. Knob; 12. Clamping groove; 13. One-way screw; 14. Clamping block; 15. Limiting rod; 16. Rotary handle; 17. Telescopic rod; 18. Connecting rod; 19. Winding rod; 20. First spring; 21. Second slide groove; 22. Connecting block; 23. Guide rod; 24. Second spring. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0026] like Figure 1-5 As shown, a tensile testing machine for testing medical guidewires is disclosed. It includes a single-column tensile testing machine body 1. A movable crossbeam 3 is mounted on the upper end of the single-column tensile testing machine body 1. The movable crossbeam 3 moves upward as controlled by the operation of the single-column tensile testing machine body 1 to perform tensile testing. An upper fixed seat 4 is fixedly connected to the bottom side of the movable crossbeam 3. A lower fixed seat 2 is fixedly connected to the lower end of the single-column tensile testing machine body 1 at a position corresponding to the upper fixed seat 4. Clamping platforms 5 are fixedly connected to the ends of both the upper fixed seat 4 and the lower fixed seat 2. A clamping groove 12 is provided at one end of each clamping platform 5. A clamping block 14 is disposed within the clamping groove 12. A one-way screw 13 is rotatably connected to one side of the clamping block 14, and one end of the one-way screw 13 passes through... A throttle 16 is fixedly connected to the side wall of the clamping platform 5. A telescopic rod 17 is fixedly connected to one end of the clamping platform 5. A connecting block 22 is fixedly connected to one end of the telescopic rod 17. A connecting rod 18 is provided on the outside of the connecting block 22. A second sliding groove 21 is opened on the bottom side of one end of the connecting rod 18. One end of the connecting block 22 is slidably connected to the second sliding groove 21. A winding rod 19 is fixedly connected to the bottom of one end of the connecting rod 18. The winding rod 19 is placed on the outside of the corresponding position of the clamping groove 12. A crossbar 6 is fixedly connected to the upper end of the single column tensile testing machine body 1. A first sliding groove 7 is opened on one side of the crossbar 6. U-shaped sliders 9 are symmetrically slidably connected to both ends of the first sliding groove 7. A transparent cover 10 is fixedly connected to the top of each U-shaped slider 9.

[0027] like Figure 1-5As shown, one end of the one-way screw 13 is threaded to the side wall of the clamping platform 5. Limiting rods 15 are symmetrically fixedly connected to both ends of the clamping groove 12. The limiting rods 15 are all parallel to the one-way screw 13. The two ends of the clamping block 14 are slidably connected to the corresponding limiting rods 15. A first spring 20 is sleeved around the periphery of the telescopic rod 17. The two ends of the first spring 20 are fixedly connected to the clamping platform 5 and the connecting block 22, respectively. The connecting rod 18 has an L-shaped structure. A guide rod 23 is fixedly connected inside the second sliding groove 21. The connecting block 22 is slidably connected to the guide rod 23. A second spring 24 is sleeved around the periphery of the guide rod 23 near the winding rod 19. The two ends of the second spring 24 are fixedly connected to the connecting block 22 and the connecting rod 18, respectively. When the two ends of the medical guidewire are wound around the upper and lower winding rods 19, and the connecting rod 18 is pressed towards the clamping platform 5, the telescopic rod 17 and the first spring 20 are compressed, and the winding rod 19 is compressed. The medical guide wire is inserted into the clamping groove 12. Then, the handle 16 is turned, which drives the one-way screw 13 to rotate. This causes the clamping block 14 to press the wound rod 19 and connecting rod 18 along the limiting rod 15. As the connecting rod 18 is compressed, it slides relative to the connecting block 22, that is, the connecting rod 18 slides towards the telescopic rod 17. At this time, the second spring 24 is compressed until the wound rod 19 with the medical guide wire is clamped between the clamping block 14 and the side wall of the clamping groove 12. In this way, the two ends of the medical guide wire are clamped in the upper and lower clamping platforms 5 respectively, which improves the tightness of the clamping of the end of the medical guide wire and avoids the end of the medical guide wire from falling off or loosening during the test of tensile force, which would affect the test efficiency. After the test, the handle 16 is turned in the opposite direction, the clamping block 14 releases the wound rod 19, and the first spring 20 and the second spring 24 return to their original extension, thereby driving the connecting rod 18 and the wound rod 19 to quickly return to their original position for the next use.

[0028] like Figure 1-5 As shown, a bidirectional screw 8 is rotatably connected inside the first groove 7. The two ends of the bidirectional screw 8 are threadedly connected to the corresponding U-shaped sliders 9. A knob 11 is rotatably connected to one side of the crossbar 6 at the position corresponding to the bidirectional screw 8. One end of the bidirectional screw 8 passes through the side wall of the crossbar 6 and is fixedly connected to the knob 11. Rotating the knob 11 causes the bidirectional screw 8 to rotate, which in turn causes the U-shaped sliders 9 to move towards each other, thereby causing the transparent shields 10 on both sides of the upper end to move towards each other and close. This provides shielding protection during the tensile test, preventing the broken part of the medical guide wire from popping out and causing injury to the staff, thus improving safety.

[0029] Working principle: In use, the two ends of the medical guidewire are wound around the upper and lower winding rods 19 respectively. The connecting rod 18 is pressed towards the clamping platform 5. At this time, the telescopic rod 17 and the first spring 20 are compressed, and the winding rod 19 is pressed into the clamping groove 12. Then, the handle 16 is turned, thereby driving the one-way screw 13 to rotate, which in turn drives the clamping block 14 to press the wound rod 19 and connecting rod 18 along the limiting rod 15. As the connecting rod 18 is compressed, it slides relative to the connecting block 22, that is, the connecting rod 18 slides towards the telescopic rod 17. At this time, the second spring 24 is compressed until the wound rod 19 is clamped between the clamping block 14 and the side wall of the clamping groove 12. In this way, the two ends of the medical guidewire are respectively... Clamped within the upper and lower clamping platforms 5, the tightness of the medical guidewire end is improved, preventing the medical guidewire end from falling off or loosening during the tensile test, which would affect the test efficiency. Rotating the knob 11 drives the bidirectional screw 8 to rotate, which in turn drives the U-shaped slider 9 to move towards each other, thereby causing the transparent shields 10 on both sides of the upper end to move towards each other and close, providing shielding protection during the tensile test, preventing the broken part of the medical guidewire from popping out and causing injury to the staff, thus improving safety. After the test, rotating the handle 16 causes the clamping block 14 to release the clamping winding rod 19, the first spring 20 and the telescopic rod 17 to return to their original length and extend, the winding rod 19 pops out of the clamping groove 12, and the second spring 24 returns to its original length and extends, driving the connecting rod 18 to return to its original length, making it convenient for the next test.

[0030] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to any specific implementation. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A tensile testing machine for testing medical guidewires, comprising a single-column tensile testing machine body (1), characterized in that: The upper end of the single-column tensile testing machine body (1) is provided with a movable crossbeam (3). The bottom side of the movable crossbeam (3) is fixedly connected to an upper fixed seat (4). The lower end of the single-column tensile testing machine body (1) is fixedly connected to a lower fixed seat (2) at the position corresponding to the upper fixed seat (4). Both the upper fixed seat (4) and the lower fixed seat (2) are fixedly connected to clamping platforms (5). One end of each clamping platform (5) is provided with a clamping groove (12). A clamping block (14) is provided in the clamping groove (12). One side of the clamping block (14) is rotatably connected to a one-way screw (13). One end of the one-way screw (13) passes through the side wall of the clamping platform (5) and is fixedly connected to a throttle (16). One end of the clamping platform (5) is fixedly connected to a handle (16). A telescopic rod (17) is fixedly connected to one end of the telescopic rod (17), and a connecting block (22) is fixedly connected to one end of the telescopic rod (17). A connecting rod (18) is provided on the outside of the connecting block (22). A second sliding groove (21) is opened on the bottom side of one end of the connecting rod (18). One end of the connecting block (22) is slidably connected in the second sliding groove (21). A winding rod (19) is fixedly connected to the bottom of one end of the connecting rod (18). A crossbar (6) is fixedly connected to the upper end of the single column tensile testing machine body (1). A first sliding groove (7) is opened on one side of the crossbar (6). U-shaped sliders (9) are symmetrically slidably connected to both ends of the first sliding groove (7). A transparent cover (10) is fixedly connected to the top of each U-shaped slider (9).

2. The tensile testing machine for testing medical guidewires according to claim 1, characterized in that: One end of the one-way screw (13) is threaded to the side wall of the clamp (5).

3. The tensile testing machine for testing medical guidewires according to claim 1, characterized in that: The clamping groove (12) has symmetrical fixed connections at both ends of the clamping rods (15), and the clamping rods (15) are all arranged parallel to the one-way screw (13). The two ends of the clamping block (14) are slidably connected to the corresponding clamping rods (15).

4. The tensile testing machine for testing medical guidewires according to claim 1, characterized in that: A bidirectional screw (8) is rotatably connected inside the first groove (7). The two ends of the bidirectional screw (8) are threadedly connected to the corresponding U-shaped slider (9). A knob (11) is rotatably connected to one side of the crossbar (6) at the position corresponding to the bidirectional screw (8). One end of the bidirectional screw (8) passes through the side wall of the crossbar (6) and is fixedly connected to the knob (11).

5. A tensile testing machine for testing medical guidewires according to claim 1, characterized in that: The telescopic rod (17) is fitted with a first spring (20) on its periphery. The two ends of the first spring (20) are fixedly connected to the clamping platform (5) and the connecting block (22) respectively. The connecting rod (18) has an L-shaped structure.

6. A tensile testing machine for testing medical guidewires according to claim 1, characterized in that: A guide rod (23) is fixedly connected inside the second groove (21). The connecting block (22) is slidably connected to the guide rod (23). A second spring (24) is sleeved around one end of the guide rod (23) near the winding rod (19). The two ends of the second spring (24) are fixedly connected to the connecting block (22) and the connecting rod (18) respectively.

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