Clamping tool and shearing force testing equipment

Abstract

The utility model belongs to the technical field of medical instrument detection, and discloses a clamping tool and shearing force testing equipment. The clamping tool comprises a first clamping piece and a second clamping piece. The first clamping piece is provided with a first stop assembly; the first clamping piece is provided with a first stopping assembly, the second clamping piece is provided with a second stopping assembly, the sample can be clamped between the first clamping piece and the second clamping piece, the first stopping assembly is used for stopping the sample in the first direction, and the second stopping assembly is used for stopping the sample in the direction opposite to the first direction. According to the clamping tool, in the shearing force testing process, when shearing force is applied to the clamping tool, a sample cannot be disengaged from the clamping tool, the shearing force testing result is not affected, the testing success rate is high, then the frequency of repeated testing is reduced, and time and labor are saved.

Description

Technical Field

[0001] The utility model relates to the technical field of medical device detection, in particular to a clamping tool and shear force testing equipment. Background Art

[0002] With the aging of the population and the increase in accidents in life, osteoporosis and spinal compression fractures are very common. If they are not effectively reduced, the condition will be aggravated. Lumbar fusion is required to treat osteoporosis and spinal compression fractures.

[0003] Before the lumbar fusion device is used on the human body, a shear test is required to evaluate the shear strength and stability of the lumbar fusion device under normal use conditions. The shear test process is as follows: prepare the lumbar fusion device sample, select the appropriate shear angle (45° or 27°) as needed; correctly install the sample on the clamping fixture, start the shear test equipment for shear test, and record the test data. In the process of applying shear force to the clamping fixture, the lumbar fusion device sample can easily fall out of the clamping fixture in the direction of the force, thereby affecting the test results of the shear test, and the test success rate is low, resulting in the need for retesting, which is time-consuming and labor-intensive. Utility Model Content

[0004] The purpose of the utility model is to provide a clamping fixture and a shear force testing device, so that during the shear force test, when the shear force is applied to the clamping fixture, the sample will not fall out of the clamping fixture, so that the result of the shear force test is not affected, the test success rate is high, and the frequency of repeated tests is reduced, saving time and effort.

[0005] To achieve this purpose, the utility model adopts the following technical solutions:

[0006] On the one hand, a clamping tool is provided for clamping a lumbar fusion cage sample so that the sample can complete a shear force test, and the clamping tool comprises:

[0007] A first clamping member, wherein the first clamping member is provided with a first stop assembly;

[0008] The second clamping member is provided with a second stopping assembly, the sample can be clamped between the first clamping member and the second clamping member, the first stopping assembly is used to stop the sample along a first direction, and the second stopping assembly is used to stop the sample in the opposite direction of the first direction.

[0009] Preferably, the first clamping member is provided with a first groove, the second clamping member is provided with a second groove, the first groove and the second groove are arranged opposite to each other, and two opposite side surfaces of the sample can respectively abut against the first groove and the second groove.

[0010] Preferably, the first stop assembly includes a first protrusion for abutting against the sample to stop the sample in the first direction.

[0011] Preferably, first anti-slip teeth are provided on the side surface of the first protrusion for abutting against the sample.

[0012] Preferably, the first stop assembly further includes a first reinforcing member disposed on a side of the first protrusion away from the first anti-slip teeth.

[0013] Preferably, the second stop assembly includes a second protrusion for abutting against the sample to stop the sample in the opposite direction of the first direction.

[0014] Preferably, second anti-slip teeth are provided on the side surface of the second protrusion for abutting against the sample.

[0015] Preferably, the second stop assembly further includes a second reinforcing member disposed on a side of the second protrusion away from the second anti-slip teeth.

[0016] Preferably, the first clamping member is provided with a first anti-rotation surface, and the second clamping member is provided with a second anti-rotation surface, and the first anti-rotation surface and the second anti-rotation surface are arranged in parallel.

[0017] On the other hand, a shear force testing device is provided, which is characterized by including a housing, a testing machine, and a clamping tooling as described in any one of the above, the clamping tooling can be placed in the housing, and an output end of the testing machine can abut against the housing to apply a force to the sample through the housing and the clamping tooling.

[0018] Advantages of the present utility model:

[0019] The clamping tooling provided in this embodiment includes a first clamping member and a second clamping member. The first clamping member is provided with a first stop assembly, and the second clamping member is provided with a second stop assembly. The sample can be clamped between the first clamping member and the second clamping member. The first stop assembly is used to stop the sample in the first direction, and the second stop assembly is used to stop the sample in the opposite direction of the first direction. The settings of the first stop assembly and the second stop assembly enable the sample in the clamping tooling to be stopped in the first direction and the opposite direction of the first direction when a shear force is applied to the clamping tooling during the shear force test, preventing the sample from falling out of the clamping tooling, ensuring that the test result is not affected, improving the test success rate, and avoiding the problems of time-consuming, laborious, and low test efficiency caused by the need to retest when the sample falls off. Description of the Drawings

[0020] Figure 1 is a front view of the clamping tooling provided by an embodiment of the present utility model;

[0021] Figure 2 is a schematic structural diagram of the first clamping member provided by an embodiment of the present utility model;

[0022] Figure 3 is a schematic structural diagram of the second clamping member provided by an embodiment of the present utility model.

[0023] In the figure:

[0024] X, the first direction;

[0025] 1, the first clamping member; 11, the first groove; 12, the first anti-rotation surface;

[0026] 2, the first stop component; 21, the first protrusion; 22, the first anti-slip teeth; 23, the first reinforcing member;

[0027] 3, the second clamping member; 31, the second groove; 32, the second anti-rotation surface;

[0028] 4, the second stop component; 41, the second protrusion; 42, the second anti-slip teeth; 43, the second reinforcing member;

[0029] 100, the sample. Detailed implementation manners

[0030] The present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the present utility model, rather than limiting the present utility model. In addition, it should be noted that, for the sake of convenience of description, only parts related to the present utility model are shown in the drawings, rather than all the structures.

[0031] In the description of the present utility model, unless otherwise clearly defined and limited, the terms "connected", "connected to", and "fixed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral body; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0032] In the present utility model, unless otherwise clearly specified and defined, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may also include the situation where the first and second features are not in direct contact but in contact through other features therebetween. Moreover, the first feature being "above", "over" and "on the top of" the second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "below", "under" and "beneath" the second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the horizontal height of the first feature is lower than that of the second feature.

[0033] In the description of this embodiment, the orientation or positional relationships such as "above", "below", "right", etc. are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of description and simplifying the operation, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be construed as a limitation to the present utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0034] As Figures 1 to 3 shown, this embodiment provides a clamping tooling for clamping a lumbar fusion cage sample 100 so that the sample 100 can complete a shear force test. In some embodiments, the clamping tooling includes a first clamping member 1 and a second clamping member 3. The first clamping member 1 is provided with a first stop assembly 2; the second clamping member 3 is provided with a second stop assembly 4. The sample 100 can be clamped between the first clamping member 1 and the second clamping member 3. The first stop assembly 2 is used to stop the sample 100 along the first direction X, and the second stop assembly 4 is used to stop the sample 100 along the opposite direction of the first direction X.

[0035] Specifically, the materials of both the first clamping member 1 and the second clamping member 3 are polyoxymethylene, and polyoxymethylene has characteristics such as fatigue resistance and wear resistance. In other embodiments, the materials of the first clamping member 1 and the second clamping member 3 can also be polyacetal, but it is not limited thereto.

[0036] The settings of the first stop assembly 2 and the second stop assembly 4 enable the sample 100 in the clamping tooling to be stopped in the first direction X and the opposite direction of the first direction X when a shear force is applied to the clamping tooling during the shear force test, preventing the sample 100 from slipping out of the clamping tooling, ensuring that the test result is not affected, improving the test success rate, and avoiding the problems of time-consuming, laborious and low test efficiency caused by the need to retest when the sample 100 falls off.

[0037] To make the sample 100 more stable when clamped, the first clamping member 1 is provided with a first groove 11, and the second clamping member 3 is provided with a second groove 31. The first groove 11 and the second groove 31 are arranged opposite to each other, and the two opposite side surfaces of the sample 100 can respectively abut against the first groove 11 and the second groove 31. The provision of the first groove 11 and the second groove 31 enables at least a part of the sample 100 to be placed in the first groove 11 and the second groove 31. Specifically, the shapes of the first groove 11 and the second groove 31 are respectively consistent with the shapes of the corresponding side surfaces of the sample 100.

[0038] To prevent the sample 100 from falling off the clamping tooling along the first direction X, the first stop assembly 2 includes a first protrusion 21, and the first protrusion 21 is used to abut against the sample 100 to stop the sample 100 in the first direction X. In this embodiment, in order to enable the first protrusion 21 to have a certain strength, the height of the first protrusion 21 is 2 mm - 5 mm.

[0039] Furthermore, in order to increase the friction between the first protrusion 21 and the sample 100 and further prevent the sample 100 from falling off the clamping tooling along the first direction X, the side surface of the first protrusion 21 for abutting against the sample 100 is provided with first anti-slip teeth 22.

[0040] Preferably, the first stop assembly 2 further includes a first reinforcing member 23, and the first reinforcing member 23 is arranged on the side of the first protrusion 21 away from the first anti-slip teeth 22. Since the first protrusion 21 serves to stop the sample 100 in the first direction X, the provision of the first reinforcing member 23 increases the strength of the first protrusion 21, preventing the problem that the first protrusion 21 breaks during the process of applying force to the clamping tooling during the shear test, resulting in the sample 100 falling off the clamping tooling. At the same time, the provision of the first reinforcing member 23 improves the service life of the clamping tooling.

[0041] To prevent the sample 100 from falling off the clamping tooling along the opposite direction of the first direction X, the second stop assembly 4 includes a second protrusion 41, and the second protrusion 41 is used to abut against the sample 100 to stop the sample 100 in the opposite direction of the first direction X. In order to enable the second protrusion 41 to have a certain strength, the height of the second protrusion 41 is 2 mm - 5 mm.

[0042] Furthermore, in order to increase the friction between the second protrusion 41 and the sample 100 and further prevent the sample 100 from falling off the clamping tooling along the opposite direction of the first direction X, the side surface of the second protrusion 41 for abutting against the sample 100 is provided with second anti-slip teeth 42.

[0043] Preferably, the second stop assembly 4 further includes a second reinforcing member 43 disposed on a side of the second protrusion 41 away from the second anti-slip teeth 42. Since the second protrusion 41 serves to stop the sample 100 in the opposite direction of the first direction X, the provision of the second reinforcing member 43 increases the strength of the second protrusion 41, preventing the problem that the second protrusion 41 breaks during the application of force to the clamping tooling during the shear test, resulting in the sample 100 falling off the clamping tooling. At the same time, the provision of the second reinforcing member 43 improves the service life of the clamping tooling.

[0044] The first clamping member 1 is provided with a first anti-rotation surface 12, and the second clamping member 3 is provided with a second anti-rotation surface 32. The first anti-rotation surface 12 and the second anti-rotation surface 32 are arranged in parallel. During the shear test, the sample 100 needs to be placed in the clamping tooling, and the clamping tooling needs to be placed in the housing of the shear test equipment. The provision of the first anti-rotation surface 12 and the second anti-rotation surface 32 enables the clamping tooling to be placed more stably in the housing, preventing the clamping tooling from rotating or moving during the shear test after being placed in the housing, thereby affecting the result of the shear test.

[0045] This embodiment also provides a shear test device, including a housing, a testing machine, and a clamping tooling. The clamping tooling can be placed in the housing, and the output end of the testing machine can abut against the housing to apply force to the sample 100 through the housing and the clamping tooling.

[0046] Obviously, the above embodiments of the present invention are merely examples for clearly explaining the present invention, rather than limiting the implementation manners of the present invention. For those of ordinary skill in the art, various obvious changes, re-adjustments, and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to enumerate all the implementation manners here. Any modifications, equivalent substitutions, and improvements made within the spirit and principle of the present invention shall be included within the protection scope of the claims of the present invention.

Claims

1. A clamping tooling for clamping a lumbar fusion device sample (100) to enable the sample (100) to complete a shear test, characterized in that, The clamping tooling includes: A first clamping member (1), and a first stop assembly (2) is provided on the first clamping member (1); A second clamping member (3), and a second stop assembly (4) is provided on the second clamping member (3). The sample (100) can be clamped between the first clamping member (1) and the second clamping member (3). The first stop assembly (2) is used to stop the sample (100) along a first direction (X), and the second stop assembly (4) is used to stop the sample (100) along the opposite direction of the first direction (X).

2. The clamping tooling according to claim 1, characterized in that, The first clamping member (1) is provided with a first groove (11), and the second clamping member (3) is provided with a second groove (31). The first groove (11) and the second groove (31) are arranged oppositely. Two opposite side surfaces of the sample (100) can respectively abut against the first groove (11) and the second groove (31).

3. The clamping tooling according to claim 1, wherein The first stop assembly (2) includes a first protrusion (21), and the first protrusion (21) is used to abut against the sample (100) to stop the sample (100) in the first direction (X).

4. The clamping tooling according to claim 3, characterized in that, First anti-slip teeth (22) are provided on the side surface of the first protrusion (21) for abutting against the sample (100).

5. The clamping tooling according to claim 4, characterized in that, The first stop assembly (2) further includes a first reinforcing member (23), and the first reinforcing member (23) is arranged on the side of the first protrusion (21) away from the first anti-slip teeth (22).

6. The clamping tooling according to any one of claims 1-5, characterized in that, The second stop assembly (4) includes a second protrusion (41), and the second protrusion (41) is used to abut against the sample (100) to stop the sample (100) in the opposite direction of the first direction (X).

7. The clamping tooling according to claim 6, characterized in that, Second anti-slip teeth (42) are provided on the side surface of the second protrusion (41) for abutting against the sample (100).

8. The clamping tooling according to claim 7, wherein The second stop assembly (4) further includes a second reinforcing member (43), and the second reinforcing member (43) is arranged on the side of the second protrusion (41) away from the second anti-slip teeth (42).

9. The clamping tooling according to claim 1, wherein The first clamping member (1) is provided with a first anti-rotation surface (12), and the second clamping member (3) is provided with a second anti-rotation surface (32). The first anti-rotation surface (12) and the second anti-rotation surface (32) are arranged in parallel.

10. A shear force testing device, characterized in that, It includes a housing, a testing machine, and the clamping tooling as described in any one of claims 1-9. The clamping tooling can be placed inside the housing, and the output end of the testing machine can abut against the housing to apply a force to the sample (100) through the housing and the clamping tooling.

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