Bending strength testing tool for auditory ossicle prosthesis

Abstract

The invention belongs to the field of medical instruments, and discloses a bending strength testing tool for an auditory ossicle prosthesis, the bending strength testing tool comprises a support frame, a fixing piece and a crank, the support frame comprises a base and a support arm arranged on the base; the fixing piece is arranged on one side of the supporting arm and used for clamping one end of the auditory ossicle prosthesis. The crank is located on the side, provided with the fixing piece, of the supporting arm, the bottom of the crank is installed on the base and adjustable in position in the first direction, and the top of the crank is located on the side, in the first direction, of the fixing piece, right faces the fixing piece and is used for placing the other end of the auditory ossicle prosthesis. And the auditory ossicle prosthesis is kept in a horizontal state. Through the cooperative design of the crank and the fixing piece and the adjustable design of the position of the crank in the first direction, the auditory ossicle prosthesis can keep a correct posture in the testing process, so that the bending strength testing accuracy and reliability of the auditory ossicle prosthesis are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, in particular to a bending strength testing tool for an auditory ossicle prosthesis. Background Art

[0002] In the field of artificial hearing implants, ossicular prostheses are primarily used to repair ossicular damage or loss caused by various reasons. The mechanical properties of ossicular prostheses directly impact their clinical effectiveness and service life. Flexural strength, a key indicator of prosthetic mechanical performance, ensures that ossicular prostheses can withstand normal physiological stresses after implantation, avoiding fractures due to insufficient strength and thus ensuring hearing restoration and surgical success rates.

[0003] However, the structure of the ossicular prosthesis is complex and its size is tiny, which brings great challenges to the testing of its bending strength. Traditional bending tests mostly use the three-point bending test method. Although this method is widely used in material mechanical property testing, during the testing process of the ossicular prosthesis, due to the lack of special test fixtures adapted to the complex structure and tiny size of the prosthesis, it is difficult to effectively clamp and load it, resulting in the inability to guarantee the accuracy and reliability of the test results. Therefore, in order to accurately test the bending strength of the ossicular prosthesis, it is urgent to develop a special test fixture to solve the problems faced by the ossicular prosthesis during bending testing. Summary of the Invention

[0004] The purpose of this application is to provide a bending strength testing tool for an auditory ossicular prosthesis to improve the accuracy and reliability of the bending strength testing of the auditory ossicular prosthesis.

[0005] The technical solutions provided in this application are as follows:

[0006] A bending strength testing tool for an ossicular prosthesis, comprising:

[0007] A support frame, comprising a base and a support arm disposed on the base;

[0008] a fixing member, provided on one side of the support arm, for clamping one end of the ossicular prosthesis;

[0009] A crank is located on the side of the support arm where the fixing member is provided. The bottom of the crank is installed on the base and is adjustable along the first direction. The top is located on one side of the fixing member along the first direction and is opposite to the fixing member. It is used to place the other end of the ossicular prosthesis and keep the ossicular prosthesis in a horizontal state.

[0010] In some embodiments, further comprising a first fastener;

[0011] The base is provided with a first fixing hole, the bottom of the crank is provided with a first waist-shaped hole extending along the first direction, and the first fastener passes through the first fixing hole and the first waist-shaped hole to fasten the crank and the base;

[0012] The position of the crank on the base along the first direction is adjusted by adjusting the corresponding positions of the first fixing hole and the first waist-shaped hole in the first direction.

[0013] In some embodiments, a slide groove is provided on the base along a first direction, and the bottom of the crank is movably disposed in the slide groove along the first direction.

[0014] In some embodiments, the crank includes a crank portion and a support portion, the bottom of the crank portion is mounted on the base, the support portion is arranged at the top of the crank portion and is adjustable in position along a second direction, and the support portion is used to place the other end of the ossicular prosthesis, wherein the second direction is perpendicular to the surface of the base.

[0015] In some embodiments, further comprising a second fastener;

[0016] The support portion is provided with a second fixing hole, the crank portion is provided with a second waist-shaped hole extending along the second direction, and the second fastener passes through the second fixing hole and the second waist-shaped hole to fasten the crank portion and the support portion;

[0017] The position of the support portion on the crank portion along the second direction is adjusted by adjusting the corresponding positions of the second fixing hole and the second waist-shaped hole in the second direction.

[0018] In some embodiments, a through hole is provided on the base, and the through hole is located directly below the gap between the fixing member and the top of the crank.

[0019] In some embodiments, the fixing member includes a first fixing block, a second fixing block and a third fastener, the first fixing block is fixedly connected to the support arm, the second fixing block is fastened to the first fixing block by the third fastener, and is used to clamp one end of the ossicular prosthesis.

[0020] In some embodiments, an opening is provided on the second fixing block, one end of the opening is open, and the open end of the opening extends through the edge of the second fixing block in a direction perpendicular to the surface of the base.

[0021] In some embodiments, the invention further comprises a turntable, wherein the turntable is rotatably disposed on the support arm, and the fixing member is fixedly mounted on the turntable;

[0022] When the turntable is at 0 degrees, the ossicular prosthesis is mounted on the fixing member and the crank and remains horizontal; when the turntable is rotated to other angles, the end of the ossicular prosthesis clamped by the fixing member forms a certain angle with the middle.

[0023] In some embodiments, an angle positioning pin is further included. The angle positioning pin is provided on the support arm and abuts against the turntable to fix the angle of the turntable.

[0024] The technical effect of the present application is that: through the coordinated design of the crank and the fixing part, and the adjustable position design of the crank along the first direction, the ossicular prosthesis can maintain the correct posture during the test, ensuring that the ossicular prosthesis remains horizontal and the rod is in a normal elongation state, avoiding test errors caused by improper posture, improving test precision and accuracy, and more accurately evaluating the mechanical properties of the ossicular prosthesis; by precisely adjusting the spacing between the crank and the fixing part, it can adapt to ossicular prostheses of different sizes, thereby improving the versatility and adaptability of the test tooling. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The present application is further described in detail below with reference to the accompanying drawings and specific embodiments:

[0026] Figure 1 This is a schematic structural diagram of a bending strength testing tool for an ossicular prosthesis provided in one embodiment of the present application;

[0027] Figure 2 This is a schematic diagram of the structure of the auditory ossicle prosthesis;

[0028] Figure 3 1 is a schematic cross-sectional view of a bending strength testing tool for an ossicular prosthesis provided in one embodiment of the present application;

[0029] Figure 4 This is a structural diagram of an auditory ossicle prosthesis provided by one embodiment of the present application from another perspective;

[0030] Figure 5 This is a partial enlarged view of an auditory ossicle prosthesis provided in one embodiment of the present application;

[0031] Figure 6 This is a structural diagram of an ossicular prosthesis provided in one embodiment of the present application from another perspective.

[0032] Description of Figure Numbers:

[0033] 10. Ossicular prosthesis; 11. Chassis; 12. Stem; 13. Head;

[0034] 100, support frame; 110, base; 111, first fixing hole; 112, slide groove; 113, through hole; 120, support arm; 121, angle scale line;

[0035] 200, fixing member; 210, first fixing block; 220, second fixing block; 221, opening;

[0036] 300, crank; 310, crank portion; 311, first waist-shaped hole; 312, second waist-shaped hole; 313, limiting groove; 320, support portion; 321, second fixing hole;

[0037] 400, first fastener; 500, second fastener;

[0038] 600, turntable; 700, rotating block; 800, angle positioning pin. DETAILED DESCRIPTION

[0039] In the following description, specific details such as specific system structures and technologies are provided for illustration rather than limitation to facilitate a thorough understanding of the embodiments of the present application. However, it should be clear to those skilled in the art that the present application may be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted to avoid obstructing the description of the present application with unnecessary details.

[0040] In order to more clearly illustrate the application embodiments or technical solutions in the prior art, the specific implementation methods of the present application will be described below with reference to the accompanying drawings. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings and other implementation methods can be obtained based on these drawings without inventive efforts.

[0041] To simplify the drawings, only the parts relevant to this application are schematically shown in each figure. They do not represent the actual structure of the product. In addition, to simplify the drawings and facilitate understanding, in some figures, only one of the components with the same structure or function is schematically depicted or labeled. In this document, "one" not only means "only one" but also "more than one."

[0042] It should be further understood that the term "and / or" used in this specification and the appended claims refers to and includes any and all possible combinations of one or more of the associated listed items.

[0043] It should be noted that, unless otherwise specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they can refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediary; or internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this application.

[0044] In the embodiments shown in the drawings, directional indications (such as up, down, left, right, front, and back, etc.) are not absolute but relative when describing the structure and movement of each component, and are not used to limit the direction of the product in actual use.

[0045] In addition, in the description of this application, ordinal numbers, such as "first", "second", etc., are only used to distinguish and describe related objects, and cannot be understood as indicating or implying the relative importance or order between related objects.

[0046] like Figure 1 As shown, in one or more embodiments, the present disclosure provides a bending strength testing tool for an ossicular prosthesis, comprising a support frame 100, a fixing member 200 and a crank 300, wherein the support frame 100 comprises a base 110 and a support arm 120 arranged on the base 110; the fixing member 200 is arranged on one side of the support arm 120, for clamping one end of the ossicular prosthesis 10; the crank 300 is located on the side of the support arm 120 where the fixing member 200 is provided, the bottom of the crank 300 is mounted on the base 110 and is adjustable in position along a first direction, the top is located on one side of the fixing member 200 along the first direction and is opposite to the fixing member 200, for placing the other end of the ossicular prosthesis 10 and keeping the ossicular prosthesis 10 in a horizontal state.

[0047] Specifically, such as Figure 2 As shown, the ossicular prosthesis 10 includes a base 11, a rod 12, and a head 13. One end of the rod 12 is connected to the base 11, and the other end of the rod 12 is connected to the head 13. When performing a three-point bending strength test, the ossicular prosthesis 10 is fixed with the aid of a bending strength test fixture. Then, a dynamometer is connected to the rod 12 in the middle of the ossicular prosthesis 10. The dynamometer is moved in a direction perpendicular to the rod 12. When the rod 12 undergoes visible bending deformation, the movement of the dynamometer is stopped. At this time, the maximum tension during the movement of the dynamometer is recorded, and then the value is substituted into the bending strength calculation formula σ. The calculation formula for bending strength σ is:

[0048]

[0049] Wherein, F is the maximum value recorded during the movement of the dynamometer (N); L is the length of the rod of the ossicular prosthesis (mm); and d is the diameter of the rod of the ossicular prosthesis (mm).

[0050] like Figure 1 As shown, the bending strength test fixture includes a support frame 100, a fixing member 200 and a crank 300; the support frame 100 includes a base 110 and a support arm 120. The base 110 is the bottom support structure of the entire test fixture and has sufficient rigidity and stability. The base 110 is a plate-like structure. The shape of the base 110 can be rectangular, circular, elliptical or other suitable geometric shapes. This embodiment does not limit the specific shape of the base 110. The support arm 120 is arranged perpendicular to the base 110 and is used to support and install the fixing member 200. In this embodiment, the support arm 120 is a plate-like structure. In other embodiments, the support arm 120 can also be a columnar structure with a rectangular cross-section to facilitate the installation of the fixing member 200. The base 110 and the support arm 120 can be made of metal (such as stainless steel, aluminum alloy, etc.) or high-strength composite materials to improve the strength of the base 110 and the support arm 120 to ensure that the base 110 and the support arm 120 can withstand the force generated by the ossicular prosthesis 10 during the bending test.

[0051] The fixing member 200 is installed on one side of the support arm 120. Its main function is to clamp and fix the chassis 11 of the ossicular prosthesis 10. The crank 300 is set on the base 110 and is located on the side of the support arm 120 where the fixing member 200 is provided. That is, the crank 300 and the fixing member 200 are located on the same side of the support arm 120. This arrangement allows the crank 300 and the support arm 120 to cooperate with each other to fix the ossicular prosthesis 10. The crank 300 can be adjusted along the first direction on the base 110. Figure 1 The first direction is the length direction of the base 110 (ie Figure 1The crank 300 can be moved toward or away from the fixing member 200 in a first direction to adjust the spacing between the crank 300 and the fixing member 200. When the base 11 of the ossicular prosthesis 10 is fixed to the fixing member 200 and the head 13 is placed on top of the crank 300, the rod 12 of the ossicular prosthesis 10 can remain in a normal extended state, preventing bending of the rod 12 and affecting the accuracy of the bending strength test. The top of the crank 300 serves as a placement platform, and the head 13 of the ossicular prosthesis 10 is attached to the top of the crank 300, with the top of the crank 300 facing the fixing member 200. This arrangement ensures that when the base 11 of the ossicular prosthesis 10 is fixed to the fixing member 200 and the head 13 is placed on the top of the crank 300, the entire ossicular prosthesis 10, especially the rod 12 of the ossicular prosthesis 10, remains horizontal, thereby improving the accuracy of the bending strength test. When the entire ossicular prosthesis 10 is kept in a horizontal state, the central axis of the base 11 , the central axis of the stem 12 , and the central axis of the head 13 of the ossicular prosthesis 10 are located on the same horizontal line.

[0052] In this embodiment, through the coordinated design of the crank 300 and the fixing member 200, and the adjustable position design of the crank 300 along the first direction, the ossicular prosthesis 10 can maintain a correct posture during the test, ensuring that the ossicular prosthesis 10 remains horizontal and the rod 12 is in a normal elongated state, avoiding test errors caused by improper posture, improving test precision and accuracy, and more accurately evaluating the mechanical properties of the ossicular prosthesis 10; by precisely adjusting the spacing between the crank 300 and the fixing member 200, it can adapt to ossicular prostheses 10 of different sizes, thereby improving the versatility and adaptability of the test tooling; in addition, by using the test tooling to assist in the bending strength test, not only is the test process more efficient, saving time and labor costs, but also the operating difficulty is reduced, and the repeatability and reliability of the test are improved.

[0053] In some embodiments, as Figure 1 and Figure 3 As shown, it also includes a first fastener 400; a first fixing hole 111 is provided on the base 110, and a first waist-shaped hole 311 extending along the first direction is provided at the bottom of the crank 300. The first fastener 400 passes through the first fixing hole 111 and the first waist-shaped hole 311 to fasten the crank 300 and the base 110; wherein, by adjusting the corresponding positions of the first fixing hole 111 and the first waist-shaped hole 311 in the first direction, the position of the crank 300 on the base 110 along the first direction can be adjusted.

[0054] The base 110 is provided with a first fixing hole 111, which extends through the base 110 along the thickness direction of the base 110. The crank 300 is provided with a first waist-shaped hole 311, which extends through the crank 300 in a direction perpendicular to the surface of the base 110 (i.e., the thickness direction of the base 110). The length direction of the first waist-shaped hole 311 is consistent with the first direction, allowing the position of the crank 300 to be adjusted in the first direction. The first fastener 400 is a bolt, screw, etc. The first fastener 400 passes through the first fixing hole 111 on the base 110 and the first waist-shaped hole 311 at the bottom of the crank 300 to secure the crank 300 to the base 110. When the position of the crank 300 along the first direction needs to be adjusted, the first fastener 400 is first loosened, then the crank 300 is moved along the first direction to the desired position, and then the first fastener 400 is retightened to secure the crank 300. As a simple variation, a waist-shaped hole can be provided on the base 110 and a fixing hole can be provided on the crank 300. The position of the crank 300 on the base 110 can also be adjusted by adjusting the relative position of the fixing hole and the waist-shaped hole.

[0055] In this embodiment, the position of the crank 300 in the first direction is adjusted by means of a waist-shaped hole and a fastener, which is not only simple in structure but also easy to adjust. In other embodiments, the position of the crank 300 on the base 110 can also be adjusted by other structural forms. For example, a slide rail extending along the first direction is provided on the base 110. The slide rail can be a T-slot, a dovetail groove, or other form of guide rail structure; the bottom of the crank 300 is provided with a slider that matches the slide rail. The slider can slide in the first direction within the slide rail. A fastener is provided on the slider. By tightening the fastener, the slider is fixed to a specific position of the slide rail, thereby adjusting and fixing the position of the crank 300 on the base 110. For another example, a screw extending along a first direction is provided on the base 110, and a nut matching the screw is installed at the bottom of the crank 300, and the crank 300 is moved by rotating the screw; a stop screw is provided on the nut, and after the crank 300 moves to the desired position, the nut is fixed to a specific position of the screw by the stop screw, so as to adjust and fix the position of the crank 300 on the base 110.

[0056] Further, such as Figure 1 As shown, a slide groove 112 is provided on the base 110 along a first direction, and the bottom of the crank 300 is movably disposed in the slide groove 112 along the first direction. The bottom of the crank 300 moves in the first direction within the slide groove 112, and the slide groove 112 can limit the movement direction of the crank 300, ensuring that the crank 300 can only move in the first direction. Not only is the adjustment method simple and intuitive, and easy to operate, but it also makes the position adjustment of the crank 300 more precise and controllable, preventing the crank 300 from shaking or deflecting in other directions after being fixed.

[0057] In some embodiments, as Figure 1 and Figure 3 As shown, the crank 300 includes a crank portion 310 and a support portion 320. The bottom of the crank portion 310 is mounted on the base 110. The support portion 320 is arranged on the top of the crank portion 310 and is adjustable in position along a second direction. The support portion 320 is used to place the other end of the ossicular prosthesis 10, wherein the second direction is perpendicular to the surface of the base 110.

[0058] The bottom of the crank portion 310 is mounted on the base 110, and the first waist-shaped hole 311 is provided on the crank portion 310. The support portion 320 is provided on the top of the crank portion 310 and is adjustable along the second direction (the thickness direction of the base 110). This design allows the height of the support portion 320 to be adjusted according to the size of the ossicular prosthesis 10. The top of the support portion 320 is designed as a placement platform for placing the head 13 of the ossicular prosthesis 10.

[0059] Before conducting the bending strength test, the ossicular prosthesis 10 is first clamped so that the base 11 of the ossicular prosthesis 10 is fixedly clamped to the fixing member 200. The crank 300 is then adjusted on the base 110 so that the head 13 of the ossicular prosthesis 10 rests on the top of the support portion 320. The height of the support portion 320 is then adjusted so that the head 13 of the ossicular prosthesis 10 is in close contact with the top surface of the support portion 320 and the shaft 12 of the ossicular prosthesis 10 is horizontal. After the ossicular prosthesis 10 is clamped, a tensile force is applied to the shaft 12 of the ossicular prosthesis 10 using a tensile tester to test the bending strength of the ossicular prosthesis 10.

[0060] In this embodiment, by setting the height of the crank 300 to be adjustable, the test tool can adapt to ossicular prostheses 10 of different sizes, thereby improving the versatility of the test tool. Moreover, no matter how the height of the head 13 of the ossicular prosthesis 10 changes, the height of the support portion 320 can be adjusted to ensure that the head 13 of the ossicular prosthesis 10 can be stably attached to the top surface of the support portion 320, and the rod portion 12 of the ossicular prosthesis 10 can be kept in a horizontal state, thereby improving the accuracy of the test results.

[0061] Further, such as Figure 1 and Figure 3 As shown, it also includes a second fastener 500; a second fixing hole 321 is provided on the support portion 320, and the crank portion 310 is provided with a second waist-shaped hole 312 extending along the second direction. The second fastener 500 passes through the second fixing hole 321 and the second waist-shaped hole 312 to fasten the crank portion 310 and the support portion 320; wherein, by adjusting the corresponding positions of the second fixing hole 321 and the second waist-shaped hole 312 in the second direction, the position of the support portion 320 on the crank portion 310 along the second direction is adjusted.

[0062] The support portion 320 is provided with a second fixing hole 321, which extends through the support portion 320 along the first direction. The crank portion 310 is provided with a second waist-shaped hole 312, which extends through the crank 300 along the first direction. The length of the second waist-shaped hole 312 aligns with the second direction, allowing the position of the support portion 320 to be adjusted in the second direction. The second fastener 500, such as a bolt or screw, passes through the second fixing hole 321 in the support portion 320 and the second waist-shaped hole 312 in the crank portion 310 to secure the support portion 320 to the crank portion 310. To adjust the height of the support portion 320, the second fastener 500 is first loosened, then the support portion 320 is moved along the second direction to the desired height, and then the second fastener 500 is retightened to fix the height of the support portion 320.

[0063] It should be noted that the height adjustment of the support portion 320 can be achieved not only through the waist-shaped hole in this embodiment, but also through the cooperation of the slide rail and the slider, the cooperation of the screw rod and the nut, etc. In addition, the height of the support portion 320 can also be adjusted by providing a waist-shaped hole in the support portion 320 and a fixing hole in the crank portion 310.

[0064] Further, such as Figure 4 As shown, a limiting groove 313 is provided on the crank portion 310 along the second direction, and the support portion 320 is movably disposed in the limiting groove 313 , and the limiting groove 313 can limit the support portion 320 .

[0065] In some embodiments, a through hole 113 is provided on the base 110, and the through hole 113 is located directly below the gap between the fixing member 200 and the top of the crank 300. After the ossicular prosthesis 10 is clamped, a thinner braided wire or silk thread is used to connect the center of the rod 12 of the ossicular prosthesis 10 to the dynamometer. To ensure the convenience of the actual testing process, a through hole 113 is dug out on the base 110 so that the silk thread can pass through the through hole 113 on the base 110 and connect to the dynamometer. The design of the through hole 113 allows the dynamometer to have a larger travel range, avoiding the test results being affected by the dynamometer's travel being too short during the test process, thereby improving the flexibility and reliability of the test.

[0066] In order to avoid the through hole on the base, the crank part of the crank needs to be bent to prevent the wire from interfering with the crank when passing through the through hole. This not only improves the convenience and flexibility of the test, but also ensures the stability and accuracy of the test process.

[0067] In some embodiments, as Figure 5As shown, the fixing member 200 includes a first fixing block 210, a second fixing block 220, and a third fastener. The first fixing block 210 is fixedly connected to the support arm 120, and the second fixing block 220 is fastened to the first fixing block 210 via the third fastener, thereby clamping one end of the ossicular prosthesis 10. The third fastener is a bolt or screw, for example. The first and second fixing blocks 210, 220 are connected and fastened by the bolts, and the chassis 11 of the ossicular prosthesis 10 is clamped between the first and second fixing blocks 210, 220, thereby clamping and securing the chassis 11 of the ossicular prosthesis 10. This embodiment uses two fixing blocks to clamp one end of the ossicular prosthesis 10, which not only has a simple structure and is easy to operate, but also firmly clamps one end of the ossicular prosthesis 10, preventing it from loosening or falling off during testing.

[0068] In other embodiments, the fixing member 200 may also be configured as a claw-type, slot-type, or other structure capable of securely clamping the chassis 11 of the ossicular prosthesis 10. For example, a claw-type fixing member may be provided with multiple claws, typically 3-6 in number, evenly distributed around the circumference. One end of each claw is connected to the fixing member body, while the other end is free and movable inward or outward. During clamping, the claws open when an external force is applied, placing the chassis 11 of the ossicular prosthesis 10 between the claws. After the external force is released, the claws, under the action of elastic force or other resetting mechanisms, firmly grip the edges of the chassis 11, thereby clamping the chassis 11 of the ossicular prosthesis 10. A slot-type fixing member, on the fixing member 200, has a slot that matches the shape of the chassis 11 of the ossicular prosthesis 10. The chassis 11 can be inserted into the slot, and the position of the chassis 11 is limited to achieve securement of the chassis 11.

[0069] Further, such as Figure 5 As shown, the second fixing block 220 is provided with an opening 221, one end of which is open, and the open end of the opening 221 extends perpendicularly to the surface of the base 110 to the edge of the second fixing block 220. The opening 221 provided on the second fixing block 220 facilitates the placement of the ossicular prosthesis 10 and facilitates the passage of the rod 12 and head 13 of the ossicular prosthesis 10 through the opening 221, thereby reducing the difficulty of operation.

[0070] In some embodiments, as Figure 6 As shown, the bending strength testing tool also includes a turntable 600, which is rotatably arranged on the support arm 120, and the fixing part 200 is fixedly installed on the turntable 600; when the turntable 600 is at the 0 degree position, the ossicular prosthesis 10 is installed on the fixing part 200 and the crank 00 and remains in a horizontal state; when the turntable 600 is rotated to other angles, the end of the ossicular prosthesis 10 clamped by the fixing part 200 is at a certain angle to the middle part.

[0071] According to the registration requirements of the ossicular prosthesis 10, the bending strength test of the ossicular prosthesis 10 must also consider the situation where the chassis 11 and the rod 12 are at a certain angle. Therefore, this test tool also needs to realize the three-point bending test after the ossicular prosthesis 10 is bent at a certain angle.

[0072] A turntable 600 is provided on the support arm 120, and a fixing member 200 is fixed on the turntable 600. When the turntable 600 rotates, the fixing member 200 is driven to rotate. The fixing member 200 clamps the chassis 11 of the ossicular prosthesis 10. After the fixing member 200 rotates a certain angle, the chassis 11 of the ossicular prosthesis 10 and the rod 12 can be set at a certain angle. The specific angle of the angle can be adjusted according to actual test needs.

[0073] During testing, the base plate 11 of the ossicular prosthesis 10 is first secured to the fixing member 200. The head of the ossicular prosthesis 10 is then placed on the support portion 320 of the crank 300. The height of the support portion 320 is adjusted to ensure that the ossicular prosthesis 10 remains horizontal. The bending strength of the ossicular prosthesis 10 in this horizontal position is then tested. When the ossicular prosthesis 10 remains horizontal, the central axis of the base plate 11 and the central axis of the rod 12 are aligned.

[0074] After the horizontal bending strength test is completed, the turntable 600 is rotated to the required angle, and then the head 13 of the ossicular prosthesis 10 is manually pressed onto the support part 320, so that the chassis 11 of the ossicular prosthesis 10 and the rod 12 are at a certain angle. At this time, the entire ossicular prosthesis 10 no longer maintains a horizontal state, and the central axis of the chassis 11 and the central axis of the rod 12 are set at a certain angle, which is greater than 0 degrees and less than 180 degrees. Finally, the bending strength of the ossicular prosthesis 10 after bending at a certain angle is tested by a dynamometer.

[0075] The design of the turntable 600 in this embodiment enables the test fixture to flexibly adjust the angle of the ossicular prosthesis 10 to accommodate different testing requirements. The operator can quickly adjust the turntable angle according to the test requirements to perform bending tests at different angles, thereby improving test flexibility.

[0076] Further, such as Figure 6 As shown, the support arm 120 is also provided with angle scale lines 121 arranged along the circumference to facilitate viewing the rotation angle of the turntable 600, so that the appropriate angle can be selected according to the test requirements during testing. The turntable 600 is also provided with a rotating block 700, so that the rotating block 700 can be held and the turntable 600 can be rotated, improving the convenience of operation.

[0077] In some embodiments, the bending strength testing tool further includes an angle positioning pin 800, which is provided on the support arm 120 and abuts against the turntable 600, and is used to fix the angle of the turntable 600. When the turntable 600 needs to be rotated, loosen the angle positioning pin 800 and rotate the turntable 600; after rotating the turntable 600 to the desired angle, tighten the angle positioning pin 800 to fix the angle of the turntable 600. In this embodiment, the angle positioning pin 800 is used to fix the angle of the turntable 600, which has a simple structure and is easy to operate. In other embodiments, a complex structure such as a gear and rack locking mechanism, a hydraulic or pneumatic locking mechanism, etc. can also be used to achieve the angle of the turntable 600.

[0078] In the above embodiments, the description of each embodiment has its own focus. For parts that are not described or recorded in detail in a certain embodiment, reference can be made to the relevant description of other embodiments.

[0079] It should be noted that the above embodiments can be freely combined as needed. The above description is only a preferred embodiment of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present application, and these improvements and modifications should also be considered as the scope of protection of the present application.

Claims

1. A bending strength test tool for an ossicular prosthesis, characterized in that: include: A support frame, comprising a base and a support arm disposed on the base; a fixing member, provided on one side of the support arm, for clamping one end of the ossicular prosthesis; A crank is located on the side of the support arm where the fixing member is provided. The bottom of the crank is installed on the base and is adjustable along the first direction. The top is located on one side of the fixing member along the first direction and is opposite to the fixing member. It is used to place the other end of the ossicular prosthesis and keep the ossicular prosthesis in a horizontal state.

2. The bending strength testing tool for an ossicular prosthesis according to claim 1, characterized in that: Also included is a first fastener; The base is provided with a first fixing hole, the bottom of the crank is provided with a first waist-shaped hole extending along the first direction, and the first fastener passes through the first fixing hole and the first waist-shaped hole to fasten the crank and the base; The position of the crank on the base along the first direction is adjusted by adjusting the corresponding positions of the first fixing hole and the first waist-shaped hole in the first direction.

3. The bending strength testing tool for an ossicular prosthesis according to claim 2, characterized in that: A sliding groove is provided on the base along a first direction, and the bottom of the crank is movably arranged in the sliding groove along the first direction.

4. The bending strength testing tool for an ossicular prosthesis according to claim 1, characterized in that: The crank includes a crank portion and a support portion, the bottom of the crank portion is mounted on the base, the support portion is arranged on the top of the crank portion and is adjustable in position along a second direction, and the support portion is used to place the other end of the ossicular prosthesis, wherein the second direction is perpendicular to the surface of the base.

5. The bending strength testing tool for an ossicular prosthesis according to claim 4, characterized in that: Also included is a second fastener; The support portion is provided with a second fixing hole, the crank portion is provided with a second waist-shaped hole extending along the second direction, and the second fastener passes through the second fixing hole and the second waist-shaped hole to fasten the crank portion and the support portion; The position of the support portion on the crank portion along the second direction is adjusted by adjusting the corresponding positions of the second fixing hole and the second waist-shaped hole in the second direction.

6. The bending strength testing tool for an ossicular prosthesis according to claim 1, characterized in that: A through hole is provided on the base, and the through hole is located directly below the gap between the fixing member and the top of the crank.

7. The bending strength testing tool for an ossicular prosthesis according to claim 1, characterized in that: The fixing member includes a first fixing block, a second fixing block and a third fastener. The first fixing block is fixedly connected to the support arm. The second fixing block is fastened to the first fixing block through the third fastener and is used to clamp one end of the ossicular prosthesis.

8. The bending strength testing tool for an ossicular prosthesis according to claim 7, characterized in that: The second fixing block is provided with an opening, one end of the opening is open, and the open end of the opening passes through the edge of the second fixing block in a direction perpendicular to the surface of the base.

9. The bending strength testing tool for an ossicular prosthesis according to any one of claims 1 to 8, characterized in that: It also includes a turntable, which is rotatably arranged on the support arm, and the fixing member is fixedly installed on the turntable; When the turntable is at 0 degrees, the ossicular prosthesis is mounted on the fixing member and the crank and remains horizontal; when the turntable is rotated to other angles, the end of the ossicular prosthesis clamped by the fixing member forms a certain angle with the middle.

10. The bending strength testing tool for an ossicular prosthesis according to claim 9, characterized in that: It also includes an angle positioning pin, which is arranged on the support arm and abuts against the turntable to fix the angle of the turntable.

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