Mechanical property testing device for medical bone setting component

Abstract

The invention relates to the technical field of medical bonesetting component performance testing, in particular to a medical bonesetting component mechanical performance testing device which comprises an equipment bin, and an adjusting assembly is arranged above the equipment bin and matched with left-right sliding through threaded connection to adjust the testing position of a bonesetting component. The top of an inner cavity of the equipment bin is provided with a clamping assembly for fixing a bone setting component through six sets of independently-controlled clamping blocks, and the bottom of the clamping assembly is provided with a detection assembly which is adjusted through the degree of freedom and matched with an adjusting assembly to complete mechanical property testing. The device has the beneficial effects that the six groups of clamping blocks which are independently controlled drive the three-fork plate to be linked with the clamping shaft through the electric push rod, so that multi-point accurate fixation of the special-shaped bone fracture component is realized, and an overall stability test is synchronously completed in the clamping process; the electromagnet, the gear and the tooth plate form a locking mechanism to automatically lock the movable shaft after clamping, and the electric push rod is released to switch to a supporting mode, so that the clamping stability in a subsequent test is ensured.

Description

Technical Field

[0001] This invention relates to the field of performance testing technology for medical bone graft components, specifically to a device for testing the mechanical properties of medical bone graft components. Background Technology

[0002] In the field of material mechanical property testing for medical bone graft components, existing technologies suffer from three limitations: First, insufficient adaptability to specimen shape; traditional unidirectional clamps are difficult to stably fix complex curved structures, leading to abnormal stress distribution in tensile / compression tests and large deviations in measured data. Second, lack of multi-parameter coupling testing; conventional equipment only supports a single mode and cannot simultaneously integrate screw insertion torque testing, dynamic fatigue analysis, and multi-angle compression verification, making it difficult to simulate the real load environment of the bone-implant interface. Third, weak spatial degree of freedom adjustment; existing platforms lack six-degree-of-freedom collaborative control capabilities, making it impossible to assess the compressive strength of bone graft components under tilted conditions or to construct dynamic torsion paths.

[0003] For example, the "Mechanical Performance Testing Apparatus and Method for Irregular Bone Set Components" disclosed in Chinese Invention Patent (Application No.: CN201910643078.8) states that bone set components are high-risk medical devices under key national supervision. They are fixation devices designed according to the shape of human bones and based on biomimetic principles, typically used to treat orthopedic diseases requiring fixation due to various causes. Quality inspection before use is crucial and closely related to the patient's recovery. Clinically suspected adverse events related to medical devices mainly manifest as plate fracture, bending, and loosening. Therefore, the fatigue strength and other mechanical properties of bone set components have a significant impact on their performance. To ensure the reliability of bone set components, their mechanical properties require rigorous testing. Bone-setting components include straight bone-setting components with regular shapes and irregular-shaped bone-setting components. Irregular-shaped bone-setting components are mainly used for fixing bones in joints and other locations. Currently, relevant industry standards specify test methods for the mechanical properties of straight bone-setting components. However, there are no existing test methods or corresponding test equipment for the mechanical properties of irregular-shaped bone-setting components.

[0004] Therefore, we have made improvements to this and proposed a mechanical performance testing device for medical bone graft components. Summary of the Invention

[0005] The purpose of this invention is to provide a mechanical performance testing device for medical bone graft components to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: The device includes an equipment compartment. Above the equipment compartment is an adjustment assembly that allows for left-right sliding adjustment of the test position of the bone fitting component via a threaded connection. At the top of the inner cavity of the equipment compartment is a clamping assembly that fixes the bone fitting component via six independently controlled clamping blocks. At the bottom of the clamping assembly is a testing assembly that allows for adjustment of degrees of freedom and, in conjunction with the adjustment assembly, completes mechanical performance testing.

[0007] As a preferred technical solution of this application, the adjustment component includes a top plate disposed above the equipment compartment, a sliding groove is provided through the middle of the top plate, a slider is fitted on the top plate through the sliding groove, the slider is inverted T-shaped, a bolt is threadedly connected to the outer side of the slider above the top plate, and an outwardly extending pressure head is threadedly connected to the middle of the slider.

[0008] As a preferred technical solution of this application, the clamping assembly includes a pad disposed at the top of the inner cavity of the equipment compartment. The side wall of the pad is provided with an inwardly extending side groove. The middle part of the pad is provided with a radial array of movable grooves. The end of the movable groove near the side groove is provided with a connecting groove that communicates with the side groove. The middle part of the outer side of the pad is provided with limiting arc plates symmetrically arranged about the connecting groove.

[0009] As a preferred technical solution of this application, the bottom array of the pad is equipped with an installation ring tube communicating with the movable groove. The pad is fitted with a movable shaft through the movable groove. The lower middle part of the movable shaft extends through the installation ring tube to its inner side. A clamping block is fixedly installed on the top of the movable shaft. A limit spring is fixedly installed on the outer side of the movable shaft, and the other end of the limit spring is fixedly connected to the end of the installation ring tube away from the center of the pad.

[0010] As a preferred technical solution of this application, toothed plates are symmetrically installed at the bottom of the mounting ring tube, and electromagnets are fixedly installed at the bottom of the two sets of toothed plates. The bottom of the movable shaft is provided with inwardly extending tooth grooves and a central groove from bottom to top, and gears are sleeved on the movable shaft through the tooth grooves.

[0011] As a preferred technical solution of this application, a mounting sleeve shaft is fixedly installed on the top of the gear, and an outwardly extending limiting rod is sleeved in the middle of the mounting sleeve shaft. The top of the limiting rod is fixedly connected to the inner wall of the movable shaft, and a return spring is sleeved on the outer side of the limiting rod. The upper and lower ends of the return spring are fixedly connected to the top of the mounting sleeve shaft and the inner side of the movable shaft, respectively.

[0012] As a preferred technical solution of this application, the side wall of the movable shaft is provided with an inwardly extending side groove, the side groove is located above the central groove, the movable shaft is fitted with a snap-fit ​​shaft through the side groove, the side wall of the snap-fit ​​shaft is provided with an inwardly extending snap-fit ​​groove, and the size of the side groove is larger than the size of the snap-fit ​​shaft.

[0013] As a preferred technical solution of this application, the movable shaft is fitted with a three-pronged plate through the side groove, and an electric push rod is fixedly installed on the outside of the three-pronged plate. The electric push rod extends through the connecting groove and the side groove to the outside of the pad. A rotating sleeve shaft is fitted on the outside of the electric push rod, and both the upper and lower ends of the rotating sleeve shaft are sleeved with the pad.

[0014] As a preferred technical solution of this application, the detection component includes an annular plate installed in the lower part of the inner cavity of the equipment compartment. Cylinders are arranged in an array above the annular plate. Universal joints are installed at both ends of the cylinders. The cylinders are connected to the top of the annular plate and the outer side of the electric push rod respectively through the universal joints.

[0015] As a preferred technical solution of this application, a limiting sleeve shaft is fixedly installed at the bottom center of the inner cavity of the equipment compartment, and a connecting ball rod extending to the top is sleeved inside the limiting sleeve shaft. A mounting ball rod is spherically sleeved at the top of the connecting ball rod, and the mounting ball rod is fixedly connected to the bottom of the pad.

[0016] Compared with the prior art, the beneficial effects of the present invention are: 1. Six independently controlled clamping blocks are driven by electric push rods to link the three-pronged plate with the snap-fit ​​shaft, achieving multi-point precise fixation of irregular bone components and simultaneously completing the overall stability test during clamping; the electromagnet, gears and toothed plates form a locking mechanism that automatically locks the movable shaft after clamping, releases the electric push rod to switch to support mode, and combines with the limit arc plate to reinforce the pad, thereby ensuring clamping stability in subsequent tests; 2. The platform of freedom composed of cylinder assembly and universal joint can drive the pad to tilt by adjusting the extension and retraction of each cylinder to simulate different bone angles and realize multi-angle pressure resistance test.

[0017] 3. The threaded pressure head, combined with the slider's left and right sliding and spiral locking, enables flexible switching between pressure resistance and local torque testing. Furthermore, when the bone fitting is connected to the screw, the cylinder pushes the pad to spiral upward, directly testing the screw's screw-in torque. Simultaneously, by limiting the rotation path of the bone fitting through the pressure head, torque can be applied in the opposite direction to complete the local torsional performance evaluation. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is an exploded view of the connection structure of the slider of the present invention; Figure 3 This is a cross-sectional view of the internal cavity structure of the equipment compartment of the present invention; Figure 4 This is a cross-sectional view of the connection structure of the inner cavity of the pad of the present invention; Figure 5 This is an exploded view of part of the connection structure of the pad of the present invention; Figure 6 This is a cross-sectional view of the connection structure inside the mounting ring of the present invention; Figure 7 This is an exploded view of the connection structure of the movable shaft of the present invention; Figure 8 This is an exploded view of the internal connection structure of the movable shaft of the present invention; Figure 9 This is a schematic diagram of the connection mechanism of the cylinder of the present invention.

[0019] The components represented by each number in the attached diagram are listed below: 1. Equipment compartment; 2. Mounting column; 3. Top plate; 4. Slide groove; 5. Slider; 6. Bolt; 7. Pressure head; 8. Washer plate; 9. Movable groove; 10. Side groove; 11. Limiting arc plate; 12. Connecting groove; 13. Mounting ring tube; 14. Toothed plate; 15. Electromagnet; 16. Movable shaft; 17. Limiting spring; 18. Clamping block; 19. Side groove; 20. Snap-fit ​​shaft; 21. Snap-fit ​​groove; 22. Mounting sleeve shaft; 23. Gear; 24. Return spring; 25. Limiting rod; 26. Center groove; 27. Toothed groove; 28. Electric push rod; 29. ​​Rotating sleeve shaft; 30. Trident plate; 31. Ring plate; 32. Cylinder; 33. Universal joint; 34. Mounting ball rod; 35. Connecting ball rod; 36. Limiting sleeve shaft. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] This invention provides a technical solution: such as Figure 1 - Figure 9 The device for testing the mechanical properties of medical bone fitting components includes a device compartment 1. An adjustment component is provided on the top of the device compartment 1, which adjusts the test position of the bone fitting component by sliding left and right through a threaded connection. A clamping component is provided on the top of the inner cavity of the device compartment 1, which fixes the bone fitting component by six independently controlled clamping blocks. A detection component is provided at the bottom of the clamping component, which adjusts the degree of freedom and works with the adjustment component to complete the mechanical property test. like Figure 1 and Figure 2As shown, the adjustment assembly includes a top plate 3 positioned above the equipment compartment 1. Mounting columns 2 are arrayed on the side walls of the top plate 3, and the bottom of the inner side of the mounting columns 2 is connected to the outer side of the equipment compartment 1. A sliding groove 4 is provided through the middle of the top plate 3. A slider 5 is fitted onto the top plate 3 through the sliding groove 4. The slider 5 is inverted T-shaped. A bolt 6 is threadedly connected to the outer side of the slider 5 above the top plate 3. An outwardly extending pressure head 7 is threadedly connected to the middle of the slider 5. By using the bolt 6 in conjunction with the inverted T-shaped slider 5, the slider 5 can be fixed to the top of the top plate 3. By using the slider 5 in conjunction with the sliding groove 4, the position of the slider 5 and the pressure head 7 can be adjusted.

[0022] like Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 and Figure 8 As shown, the clamping assembly includes a pad 8 disposed at the top of the inner cavity of the equipment compartment 1. The side wall of the pad 8 is provided with an inwardly extending side groove 10. The middle of the pad 8 is provided with a radial array of movable grooves 9, specifically six sets of movable grooves 9. A connecting groove 12 communicating with the side groove 10 is provided at one end of the movable groove 9 near the side groove 10. Limiting arc plates 11 are symmetrically arranged on the left and right sides of the middle of the outer side of the pad 8 about the connecting groove 12.

[0023] The bottom array of the pad 8 is equipped with mounting ring tubes 13 that communicate with the movable groove 9. The inner side of the mounting ring tube 13 is the same size as the movable groove 9. The pad 8 is fitted with a movable shaft 16 through the movable groove 9. The lower middle part of the movable shaft 16 extends through the mounting ring tube 13 to its inner side. The top of the movable shaft 16 is flush with the top of the pad 8. A clamping block 18 is fixedly installed on the top of the movable shaft 16. A limit spring 17 is fixedly installed on the outer side of the movable shaft 16. The other end of the limit spring 17 is fixedly connected to the end of the inner side of the mounting ring tube 13 away from the center of the pad 8. By sliding the movable shaft 16 inside the movable groove 9 and the mounting ring tube 13, the clamping block 18 can be adjusted in position, thereby clamping the docking bone assembly through the clamping block 18.

[0024] Toothed plates 14 are symmetrically installed at the bottom of the mounting ring tube 13. The width of the toothed plates 14 is greater than the width of the side wall of the mounting ring tube 13. The top of the two sets of toothed plates 14 is in contact with the bottom of the movable shaft 16. Electromagnets 15 are fixedly installed at the bottom of the two sets of toothed plates 14. The bottom of the movable shaft 16 has inwardly extending tooth grooves 27 and a central groove 26 sequentially opened from bottom to top. The movable shaft 16 is fitted with gears 23 through the tooth grooves 27. Magnets are embedded in the inside of the gears 23.

[0025] A mounting sleeve 22 is fixedly installed on the top of the gear 23, and a limiting rod 25 extending outward is sleeved in the middle of the mounting sleeve 22. The top of the limiting rod 25 is fixedly connected to the inner wall of the movable shaft 16, and a return spring 24 is sleeved on the outer side of the limiting rod 25. The upper and lower ends of the return spring 24 are fixedly connected to the top of the mounting sleeve 22 and the inner side of the movable shaft 16, respectively. When the electromagnet 15 is energized, it generates magnetic force, which can attract the magnet embedded in the gear 23, thereby driving the gear 23 to move downward. The gear 23 pulls the mounting sleeve 22 and the return spring 24. The return spring 24 is used to reset the gear 23, and the mounting sleeve 22 and the limiting rod 25 are used to limit the movement of the gear 23.

[0026] The side wall of the movable shaft 16 has an inwardly extending side groove 19, which is located above the central groove 26. The movable shaft 16 is fitted with a snap-fit ​​shaft 20 through the side groove 19. The side wall of the snap-fit ​​shaft 20 has an inwardly extending snap-fit ​​groove 21, and the size of the side groove 19 is larger than the size of the snap-fit ​​shaft 20.

[0027] The movable shaft 16 is fitted with a three-pronged plate 30 through the side groove 19. The two sides of the three-pronged plate 30 are fitted onto the outside of the snap-fit ​​shaft 20. The middle part of the three-pronged plate 30 extends through the snap-fit ​​groove 21 into the inside of the snap-fit ​​shaft 20. An electric push rod 28 is fixedly installed on the outside of the three-pronged plate 30. The electric push rod 28 extends through the connecting groove 12 and the side groove 10 to the outside of the pad 8. A rotating sleeve shaft 29 is fitted on the outside of the electric push rod 28. Both the upper and lower ends of the rotating sleeve shaft 29 are fitted onto the pad 8. When the electric push rod 28 extends, it is easy to push the three-pronged plate 30 installed at its output end to snap into the snap-fit ​​shaft 20. When the electric push rod 28 retracts, it is easy to drive the three-pronged plate 30 to disengage from the snap-fit ​​shaft 20 and move to the inside of the side groove 10. At this time, the electric push rod 28 can rotate around the rotating sleeve shaft 29.

[0028] like Figure 9 As shown, the detection assembly includes an annular plate 31 installed in the lower part of the inner cavity of the equipment compartment 1. Cylinders 32 are arrayed on the upper part of the annular plate 31. Universal joints 33 are installed at both ends of the cylinders 32. The cylinders 32 are connected to the top of the annular plate 31 and the outer side of the electric push rod 28 respectively through the universal joints 33. By simultaneously adjusting the extension length of the cylinders 32, or adjusting the extension length of different cylinders 32, the position and tilt of the electric push rod 28 can be adjusted under the principle of degree of freedom adjustment, thereby adjusting the pad 8.

[0029] A limiting sleeve shaft 36 is fixedly installed at the bottom center of the inner cavity of the equipment compartment 1, and a connecting ball rod 35 extending to the top is sleeved inside the limiting sleeve shaft 36. A mounting ball rod 34 is spherically sleeved at the top of the connecting ball rod 35, and the mounting ball rod 34 is fixedly connected to the bottom of the pad 8. The mounting ball rod 34 and the connecting ball rod 35 facilitate limiting the pad 8 when it is tilted.

[0030] Working principle: When using, first take out the device and place it in the appropriate position, then take out the bone component that needs to be tested for mechanical properties and place it on top of the pad 8; Detection status selection: Select whether to perform screw screwing torque test according to the site conditions. If synchronous detection is required, directly take out the screw and screw it into the inside of the slider 5, so that the screw extends to the bottom of the slider 5. Then take out the bone component to be tested and connect the bone component to the screw. Then place the bone component between the clamping blocks 18 arrayed on the top of the pad 8. Clamping: After the bone fitting components are placed, the six independently controlled electric push rods 28 are activated to push the trident plate 30 installed at the output end of the electric push rod 28 through the connecting groove 12 and the side groove 19 that is connected to the connecting groove 12, and continue to extend until the straight plate in the middle of the trident plate 30 contacts the snap-fit ​​shaft 20, and extends through to the snap-fit ​​groove 21 opened on the outside of the snap-fit ​​shaft 20 and into the inside of the snap-fit ​​groove 21. Then, the arc plates on both sides of the trident plate 30 will also be sleeved on the outside of the snap-fit ​​shaft 20 as the electric push rod 28 moves, until the trident plate 30 is completely combined with the snap-fit ​​shaft 20. At this time, the electric push rod 28 continues to push, and through the trident plate 30, it drives the snap-fit ​​shaft 20 combined with it to push the movable shaft 16 and the clamping block 18 installed on its top to move, until all six clamping blocks 18 are in contact with the bone fitting components. At this time, the pushing force of the electric push rod 28 is increased, and the bone fitting components are fully squeezed by the six clamping blocks 18. The pushing force value is recorded by the pressure sensor integrated into the electric push rod 28. Mechanical testing during clamping: As the thrust of the electric push rod 28 increases, it is possible to choose whether to conduct an overall stability test. If testing is required, the thrust of the electric push rod 28 is continuously increased and the thrust value is continuously recorded. Then, the clamping block 18 continuously applies pressure to the bone component until the thrust value of the electric push rod 28 reaches the maximum value that the bone component can theoretically withstand. If the bone component is damaged or broken during this process, the thrust value at the time of damage is recorded, and the next bone component is replaced for the next set of tests. Otherwise, the next test is performed. At this time, the thrust output of the electric push rod 28 can be appropriately reduced. The clamping of the bone component is completed by the thrust output of the electric push rod 28 in conjunction with the clamping block 18. Clamping and Fixing: After the overall stability test of the bone fitting component is completed and the bone fitting component is clamped, the electromagnet 15 installed below the pad 8 is activated. The electromagnet 15 is energized and generates magnetic force, which attracts the magnet embedded inside the gear 23. At this time, the magnetic force generated by the electromagnet 15 is much greater than the rebound force of the return spring 24, thus driving the gear 23 to move downward. The gear 23 then drives the mounting sleeve 22 and the return spring 24 installed on its top to move downward. The downward movement of the gear 23 will mesh with the toothed plate 14 arrayed at the bottom of the pad 8, thereby fixing the gear 23. At this time, the gear 23 is subjected to a downward magnetic force, and at the same time, due to the constraint of the mounting sleeve 22 and the limiting rod 25, it is subjected to a horizontal outward contraction force applied by the limiting spring 17. The combination of these two vertical forces increases the friction between the gear 23 and the toothed plate 14, making the friction much greater than that of the return spring 24. The spring force allows the engagement of gear 23 with toothed plate 14 to fix the movable shaft 16 and clamping block 18. Then, the electric push rod 28 can be retracted intermittently, causing it to retract and drive the three-pronged plate 30 installed at its output end to disengage from the snap-fit ​​shaft 20 and move into the side groove 10 opened on the side wall of the pad 8. At this time, the cylinder 32 connected to the retracted electric push rod 28 is activated, causing the cylinder 32 to extend slightly. Under the action of the universal joint 33, the cylinder 32 provides an upward force to the electric push rod 28, thereby forcing the electric push rod 28 to rotate around the rotating sleeve shaft 29, thereby causing the electric push rod 28 to deflect. At this time, the deflected electric push rod 28 is activated, causing it to drive the three-pronged plate 30 installed at its output end to move and snap into the limiting arc plates 11 distributed on both sides of the connecting groove 12, thereby clamping the pad 8. Then, the above steps are repeated to complete the adjustment of the remaining electric push rods 28. Torsional stiffness test under synchronous detection screw insertion torque test state: After the electric push rod 28 is adjusted, all cylinders 32 are synchronized and extended. Then, under the connection of the universal joint 33 and the clamping of the electric push rod 28, the pad 8 and the bone component clamped on its top are pushed to move spirally upward. However, since the bone component is connected to the screw, when the bone component is subjected to spiral upward pressure, it can directly test the screw insertion torque and record the test data in real time according to the thrust generated by the cylinder 32. Torsional stiffness test without screw-in torque test: In this case, the pressure head 7 needs to be screwed into the inside of the slider 5 and extended to its bottom. Then slide the slider 5 to move the bottom of the pressure head 7 to one side of the bone component and make contact with the bone component. Then, the slider 5 is locked by the bolt 6 in conjunction with the threaded groove on the outside of the slider 5, thereby fixing the pressure head 7. The pressure head 7 is not coaxial with the center point of the pad 8. Then repeat the above steps. The cylinder 32 makes the pad 8 and the bone component spiral upward. During this movement, the bone component will first contact the pressure head 7 on one side and prevent the bone component from spiraling upward under the limit of the pressure head 7. Thus, the local torque test of the bone component is realized, and the test data is recorded in real time. This process is repeated, and the test site is changed continuously until the torque test of the bone component is completed. Compression test: Slide slider 5 to move pressure head 7 to the upper surface of bone fitting component, and repeat the above steps to lock pressure head 7 in place. At this time, start cylinder 32 to make bone fitting component spiral upward and contact the bottom of pressure head 7, thereby testing the compression performance of bone fitting component. Compression test at different angles: Before conducting the above compression test, the extension length of each set of cylinders 32 can be changed to make their extension lengths inconsistent. At this time, under the principle of the degree of freedom platform, the pad 8 will be slightly tilted. Then repeat the above compression test to complete the compression test at different angles. In all the above tests, different tests can be completed by unscrewing the pressure head 7 and replacing it with different types of pressure heads 7. Furthermore, the above adjustments to the pad 8 are all made under the limitation of the mounting rod 34, connecting rod 35 and limiting sleeve shaft 36 installed at the bottom of the pad 8. This process is repeated until all mechanical performance tests of the bone fitting components are completed.

[0031] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0032] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A mechanical performance testing device for medical bone graft components, comprising an equipment compartment (1), characterized in that: The equipment compartment (1) is provided with an adjustment component that adjusts the test position of the bone fitting component by sliding left and right through a threaded connection. The top of the inner cavity of the equipment compartment (1) is provided with a clamping component that fixes the bone fitting component by six independently controlled clamping blocks. The bottom of the clamping component is provided with a detection component that completes the mechanical performance test by adjusting the degree of freedom and cooperating with the adjustment component.

2. The mechanical property testing device for medical bone-setting components according to claim 1, characterized in that: The adjustment assembly includes a top plate (3) disposed above the equipment compartment (1), with mounting columns (2) arranged on the side wall of the top plate (3), a sliding groove (4) extending through the middle of the top plate (3), and a slider (5) fitted onto the top plate (3) through the sliding groove (4). The slider (5) is in the shape of an inverted T, and a bolt (6) is threadedly connected to the outer side of the slider (5) above the top plate (3), and an outwardly extending pressure head (7) is threadedly connected to the middle of the slider (5).

3. The mechanical property testing device for medical bone-setting components according to claim 1, characterized in that: The clamping assembly includes a pad (8) disposed at the top of the inner cavity of the equipment compartment (1). The side wall of the pad (8) is provided with an inwardly extending side groove (10). The middle part of the pad (8) is provided with a radial array of movable grooves (9). The end of the movable groove (9) near the side groove (10) is provided with a connecting groove (12) that communicates with the side groove (10). The middle part of the outer side of the pad (8) is provided with limiting arc plates (11) symmetrically arranged on the left and right sides about the connecting groove (12).

4. The mechanical property testing device for medical bone-setting components according to claim 3, characterized in that: The bottom array of the pad (8) is equipped with an mounting ring tube (13) that communicates with the movable groove (9). The pad (8) is fitted with a movable shaft (16) through the movable groove (9). The lower middle part of the movable shaft (16) extends through the mounting ring tube (13) to its inner side. A clamping block (18) is fixedly installed on the top of the movable shaft (16). A limit spring (17) is fixedly installed on the outer side of the movable shaft (16), and the other end of the limit spring (17) is fixedly connected to one end of the inner side of the mounting ring tube (13) away from the center of the pad (8).

5. The mechanical property testing device for medical bone-setting components according to claim 4, characterized in that: The bottom of the mounting ring tube (13) is symmetrically equipped with toothed plates (14), and the bottom of the two sets of toothed plates (14) is fixedly equipped with electromagnets (15). The bottom of the movable shaft (16) is provided with inwardly extending tooth grooves (27) and a central groove (26) from bottom to top. The movable shaft (16) is fitted with gears (23) through the tooth grooves (27).

6. The mechanical property testing device for medical bone-setting components according to claim 5, characterized in that: The gear (23) is fixedly mounted with a mounting sleeve shaft (22), and a limiting rod (25) extending outward is sleeved in the middle of the mounting sleeve shaft (22). The top of the limiting rod (25) is fixedly connected to the inner wall of the movable shaft (16). A return spring (24) is sleeved on the outer side of the limiting rod (25). The upper and lower ends of the return spring (24) are fixedly connected to the top of the mounting sleeve shaft (22) and the inner side of the movable shaft (16), respectively.

7. The mechanical property testing device for medical bone graft components according to claim 6, characterized in that: The side wall of the movable shaft (16) is provided with an inwardly extending side groove (19), the side groove (19) is located above the central groove (26), the movable shaft (16) is fitted with a snap-fit ​​shaft (20) through the side groove (19), and the side wall of the snap-fit ​​shaft (20) is provided with an inwardly extending snap-fit ​​groove (21).

8. The mechanical property testing device for medical bone-setting components according to claim 7, characterized in that: The movable shaft (16) is fitted with a three-pronged plate (30) through the side groove (19). An electric push rod (28) is fixedly installed on the outside of the three-pronged plate (30). The electric push rod (28) extends through the connecting groove (12) and the side groove (10) to the outside of the pad (8). A rotating sleeve shaft (29) is fitted on the outside of the electric push rod (28), and both the upper and lower ends of the rotating sleeve shaft (29) are fitted with the pad (8).

9. The mechanical property testing device for medical bone-setting components according to claim 1, characterized in that: The detection assembly includes an annular plate (31) installed in the lower part of the inner cavity of the equipment compartment (1). A cylinder (32) is arranged in an array above the annular plate (31). Universal joints (33) are installed at both ends of the cylinder (32). The cylinder (32) is connected to the top of the annular plate (31) and the outside of the electric push rod (28) through the universal joints (33).

10. The mechanical property testing device for medical bone-setting components according to claim 1, characterized in that: A limiting sleeve shaft (36) is fixedly installed at the bottom center of the inner cavity of the equipment compartment (1), and a connecting ball rod (35) extending to the top is sleeved inside the limiting sleeve shaft (36). A mounting ball rod (34) is spherically sleeved at the top of the connecting ball rod (35), and the mounting ball rod (34) is fixedly connected to the bottom of the pad (8).

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