Test tool

Abstract

The utility model belongs to the technical field of orthopedic medical instruments, and particularly relates to a test tool. The test tool is used for testing an anterior cervical plate and comprises two connecting mechanisms and a driving part, the two connecting mechanisms are oppositely arranged, each connecting mechanism comprises a base and a fixing part, the fixing parts are detachably arranged on the bases, and the two ends of the anterior cervical plate are connected to the two fixing parts respectively; the number of the driving pieces is two, and the two driving pieces are connected with the two bases correspondingly. The driving piece can drive the two bases to get close to or get away from each other in the first direction and rotate around a first shaft, and the direction of the first shaft is the same as the first direction. The fixing piece is detachable, so that the fixing piece can be conveniently replaced according to the anterior cervical plates of different sizes; the driving piece drives the two bases to be close to or far away from each other or rotate, the tensile strength and torsion resistance of the anterior cervical plate can be tested, one test tool can test different anterior cervical plates, the manufacturing cost of the test tool is reduced, and the universality and test efficiency of the test tool are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of orthopedic medical equipment, in particular to a test tool. Background Art

[0002] Cone resection is a neurosurgery procedure used to treat some spinal cord and nervous system diseases. The procedure involves removing one or more vertebrae from the patient's spine and using an anterior cervical plate to fix and correct other vertebrae to relieve pressure on the spinal cord or relieve other symptoms. Anterior cervical plates need to be tested according to the industry standard YY / T0857-2011 spinal implant experimental method in the cone resection model to ensure good performance and no impact on subsequent spinal use.

[0003] In the prior art, different anterior cervical plates are selected due to their different implantation positions. Different cervical anterior plates require different performance tests, with some requiring tensile tests and others requiring torsional tests. Due to the test differences, different anterior cervical plates are often tested using different test jigs. However, using different test jigs will increase the manufacturing cost of the test jigs and affect the testing efficiency of the test jigs. Utility Model Content

[0004] The utility model aims to provide a test jig to solve the problem in the prior art that different anterior cervical vertebrae plates must be tested using different test jigs, thereby reducing the manufacturing cost of the test jig and improving the versatility and testing efficiency of the test jig.

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

[0006] Test fixture, used to test the anterior cervical spine plate, including:

[0007] A connecting mechanism and a driving member, wherein two connecting mechanisms are provided and the two connecting mechanisms are arranged opposite to each other, the connecting mechanism comprises a base and a fixing member, the fixing member is detachably provided on the base, and the two ends of the anterior cervical vertebrae plate are respectively connected to the two fixing members; there are two driving members, and the two driving members are respectively connected to the two bases; the driving member can drive the two bases to approach or move away from each other along a first direction and rotate around a first axis, and the direction of the first axis is the same as the first direction.

[0008] As an optional technical solution for the test tooling, two side panels are arranged on the base relatively along the second direction, the side panels and the base are perpendicular to each other, the second direction and the first direction are perpendicular to each other, and the fixing member is clamped between the two side panels and is detachably connected to the side panels.

[0009] As an optional technical solution for the test tooling, the connecting mechanism also includes a connecting rod, first through holes are arranged opposite to each other on the two side panels, a second through hole is arranged on the fixing member, and the connecting rod passes through one of the first through holes, the second through hole and the other first through hole to detachably connect the fixing member to the side panel.

[0010] As an optional technical solution for the test fixture, limit members are provided at both ends of the connecting rod to prevent the connecting rod from being separated from the side plate and the fixing member.

[0011] As an optional technical solution for the test tooling, the connecting rod includes a pin, a limit head is provided at one end of the pin, and a pin hole is provided at the other end, a cotter pin can pass through the pin hole, and the limit head and the cotter pin can jointly limit the pin from detaching from the side plate and the fixing member.

[0012] As an optional technical solution of the test tool, a plurality of first through holes are provided, and the plurality of first through holes are arranged at intervals along a third direction, and the third direction, the first direction and the second direction are all perpendicular.

[0013] As an optional technical solution for the test tooling, a first slide groove is arranged on the base along the second direction, and sliders are arranged on the two side panels. The sliders can slide in the first slide groove so that the two side panels can approach or move away from each other along the second direction to clamp the fixing member.

[0014] As an optional technical solution for the test tooling, a centering rod is provided at the center of the base along the second direction, and the centering rod can move along the third direction. A centering groove is provided on the fixing member along the third direction, and one end of the centering rod is inserted into the centering groove and can slide along the centering groove.

[0015] As an optional technical solution for the test tool, one end of the centering rod inserted into the centering groove is configured as a V-shaped end, and the centering groove is configured as a V-shaped groove.

[0016] As an optional technical solution for the test fixture, the material of the fixing piece includes polyethylene.

[0017] Beneficial effects of the utility model:

[0018] The utility model provides a test fixture for testing anterior cervical vertebrae plates, including a connecting mechanism and a driving member. Two connecting mechanisms are provided, and the two connecting mechanisms are arranged opposite to each other. The connecting mechanism includes a base and a fixing member, and the fixing member is detachably provided on the base. The two ends of the anterior cervical vertebrae plates are respectively connected to the two fixing members; two driving members are provided, and the two driving members are respectively connected to the two bases; the driving member can drive the two bases to approach or move away from each other along a first direction and rotate around a first axis, and the direction of the first axis is the same as the first direction. The fixing member is detachably connected to the base, so that different fixing members can be replaced according to different sizes of anterior cervical vertebrae plates; the driving member can drive the two bases to approach or move away from each other or rotate, that is, the tensile resistance of the anterior cervical vertebrae plates can be tested, and the torsional resistance of the anterior cervical vertebrae plates can also be tested; different anterior cervical vertebrae plates can be tested using one test fixture, which reduces the manufacturing cost of the test fixture and improves the versatility and testing efficiency of the test fixture. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is an isometric view of the test tool provided in the embodiment of the utility model;

[0020] Figure 2 This is a schematic diagram of the partial structure of the test tool provided by the embodiment of the utility model Figure 1 ;

[0021] Figure 3 This is a schematic diagram of the partial structure of the test tool provided by the embodiment of the utility model Figure 2 ;

[0022] Figure 4 This is a schematic diagram of the partial structure of the test tool provided by the embodiment of the utility model Figure 3 ;

[0023] Figure 5 This is a schematic diagram of the partial structure of the test tool provided by the embodiment of the utility model Figure 4 ;

[0024] Figure 6 It is a schematic structural diagram of the anterior cervical vertebrae plate provided in an embodiment of the utility model.

[0025] In the figure:

[0026] 100. Anterior cervical plate; 101. Fixation hole;

[0027] 10. base; 11. first slide groove; 12. second slide groove;

[0028] 20. fixing member; 21. second through hole; 22. centering groove; 23. inner hole;

[0029] 30. side plate; 31. first through hole; 32. slider;

[0030] 40. Connecting rod; 41. Limiting head; 42. Pin hole;

[0031] 50. Centering rod. DETAILED DESCRIPTION

[0032] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only the parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0033] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0035] In the description of this embodiment, the terms "upper", "lower", "right", etc., are based on the directions or positions shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0036] In the prior art, different anterior cervical plates are selected due to their different implantation positions. Different cervical anterior plates require different performance tests, with some requiring tensile tests and others requiring torsional tests. Due to the test differences, different anterior cervical plates are often tested using different test jigs. However, using different test jigs will increase the manufacturing cost of the test jigs and affect the testing efficiency of the test jigs.

[0037] To solve the above problems, this embodiment provides a test tool for testing anterior cervical spine plate 100. Figure 1 The test fixture includes a connecting mechanism and a driving member. There are two connecting mechanisms, which are arranged opposite to each other. The connecting mechanism includes a base 10 and a fixing member 20. The fixing member 20 is detachably arranged on the base 10, and the two ends of the cervical anterior road plate 100 are respectively connected to the two fixing members 20; there are two driving members, and the two driving members are respectively connected to the two bases 10; the driving member can drive the two bases 10 to move closer to or away from each other along a first direction and rotate around a first axis, and the direction of the first axis is the same as the first direction. The fixing member 20 is detachably connected to the base 10, which is convenient for replacing different fixing members 20 according to different sizes of cervical anterior road plates 100; the driving member can drive the two bases 10 to move closer to or away from each other or rotate, that is, the tensile resistance of the cervical anterior road plate 100 can be tested, and the torsion resistance of the cervical anterior road plate 100 can also be tested; different cervical anterior road plates 100 can be tested using one test fixture, which reduces the manufacturing cost of the test fixture and improves the versatility and testing efficiency of the test fixture.

[0038] The anterior cervical spine plate 100 is a mature device in the field of orthopedic medicine and will not be described in detail here. Figure 5 and Figure 6 The anterior cervical vertebrae plate 100 is provided with fixing holes 101 at both ends, and the fixing piece 20 is provided with corresponding inner holes 23 . Screws can pass through the fixing holes 101 and the inner holes 23 to fix the anterior cervical vertebrae plate 100 on the fixing piece 20 .

[0039] Exemplarily, when it is necessary to test the tensile performance of the anterior cervical vertebrae plate 100, the two bases 10 are driven away from each other, and the anterior cervical vertebrae plate 100 is stretched, and the two bases 10 are driven away from each other, and the anterior cervical vertebrae plate 100 is squeezed; when it is necessary to test the torsional performance of the anterior cervical vertebrae plate 100, the two bases 10 are controlled to rotate in different directions around the first axis.

[0040] Further, two side panels 30 are arranged on the base 10 in a second direction, the side panels 30 are perpendicular to the base 10, the second direction is perpendicular to the first direction, and the fixing member 20 is sandwiched between the two side panels 30 and is detachably connected to the side panels 30. Specifically, in the present embodiment, the connection mechanism further includes a connecting rod 40, first through holes 31 are arranged on the two side panels 30, and a second through hole 21 is arranged on the fixing member 20, and the connecting rod 40 passes through one of the first through holes 31, the second through hole 21 and the other first through hole 31 to detachably connect the fixing member 20 to the side panels 30. In other embodiments, a threaded hole and a pin hole can be arranged on the base 10, the fixing member 20 is fixed to the base 10 by a screw, and a quick-insert pin is inserted into the pin hole to prevent the screw from loosening when the two bases 10 rotate around the first axis. In other embodiments, a pull ring can also be arranged on the peripheral side of the fixing member 20, and a matching block (such as a glass jar buckle style) matching the pull ring can be arranged on the base 10.

[0041] Furthermore, both ends of the connecting rod 40 are provided with limit members to prevent the connecting rod 40 from being separated from the side plate 30 and the fixing member 20. Figure 4 In this embodiment, the connecting rod 40 includes a latch pin, a limit head 41 is provided at one end of the latch pin, and a pin hole 42 is provided at the other end. The cotter pin can pass through the pin hole 42. The limit head 41 and the cotter pin can jointly limit the latch pin from being separated from the side plate 30 and the fixing member 20. In other embodiments, it can also be set as a pin shaft, and the cotter pins are inserted at both ends of the pin shaft to limit the pin shaft from being separated from the side plate 30 and the fixing member 20.

[0042] Further, see Figure 2 , a plurality of first through holes 31 are provided, and the plurality of first through holes 31 are spaced apart along the third direction, and the third direction, the first direction, and the second direction are all perpendicular. In this embodiment, the diameters of the plurality of first through holes 31 are all different to match the fixings 20 of different sizes. For example, when a larger cervical anterior plate 100 needs to be tested, a larger fixing 20 needs to be used. At this time, a larger diameter connecting rod 40 needs to be used to avoid breaking when the two bases 10 are close to or away from each other and rotated, thereby damaging the test tooling or the cervical anterior plate 100 and increasing the economic cost.

[0043] Furthermore, the base 10 is provided with a first slide groove 11 along the second direction, and the two side plates 30 are provided with a slider 32, which can slide in the first slide groove 11, so that the two side plates 30 can move closer to or farther from each other along the second direction to clamp the fixing member 20. The two side plates 30 can move closer to or farther from each other along the two directions to accommodate fixing members 20 of different sizes, thereby increasing the versatility of the test tooling; the two side plates 30 are tightly attached to the fixing member 20, so that there is no gap between the fixing member 20 and the side plates 30, thereby improving the accuracy of the test. Figure 2 and Figure 3In this embodiment, the side plate 30 is configured as an L-shaped plate, which includes a first arm and a second arm, a first through hole 31 is provided on the second arm, and a slider 32 is provided on the first arm. The cross section of the first slide groove 11 is T-shaped, and a threaded hole is provided on the slider 32. The rear end of the bolt passes through the threaded hole and is placed in the first slide groove 11 to prevent the side plate 30 from being separated from the first slide groove 11.

[0044] Furthermore, a centering rod 50 is provided at the center of the base 10 along the second direction, and the centering rod 50 can move along the third direction. A centering groove 22 is provided on the fixing member 20 along the third direction, and one end of the centering rod 50 is inserted into the centering groove 22 and can slide along the centering groove 22. The centering rod 50 cooperates with the centering groove 22 to ensure that the fixing member 20 and the anterior cervical vertebrae plate 100 are in the exact center of the base 10. When the anterior cervical vertebrae plate 100 is tested, the load and torque applied by the two bases 10 can always be kept in the exact center of the anterior cervical vertebrae plate 100, thereby reducing the error of the test and making the test result more accurate.

[0045] Specifically, a second slide groove 12 is provided on the base 10 along the third direction, and one end of the centering rod 50 is placed in the second slide groove 12 and moves along the second slide groove 12. Since the fixing member 20 can change its position in the third direction, the centering rod 50 moves along the third direction, which can ensure that the centering rod 50 and the centering groove 22 can be matched regardless of the change of the position of the fixing member 20.

[0046] Further, see Figure 5 The centering rod 50 is inserted into the centering groove 22 at one end thereof and is set as a V-shaped end, and the centering groove 22 is set as a V-shaped groove. During processing, the V-shaped groove only confirms one line as the center line, while the square groove needs to confirm the center line and also needs to ensure that the center line is in the center of the square groove, so errors are easy to occur.

[0047] In this embodiment, the fixing member 20 is configured as a fixing block. Further, the fixing member 20 is made of polyethylene. Polyethylene is a low-priced raw material with a relatively low processing cost, and is therefore widely used in various fields.

[0048] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the scope of protection of the present invention. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the scope of protection of the claims of the present invention.

Claims

1. A test tool for testing anterior cervical spine plate (100), characterized in that: include: A connecting mechanism, wherein two connecting mechanisms are provided, and the two connecting mechanisms are arranged opposite to each other, and the connecting mechanism comprises a base (10) and a fixing member (20), and the fixing member (20) is detachably arranged on the base (10), and two ends of the anterior cervical vertebrae plate (100) are respectively connected to the two fixing members (20); A driving member, wherein two driving members are provided, and the two driving members are respectively connected to the two bases (10); the driving member can drive the two bases (10) to move closer to or farther from each other along a first direction and to rotate around a first axis, and the direction of the first axis is the same as the first direction.

2. The test tool according to claim 1, characterized in that: Two side panels (30) are arranged on the base (10) in a relative manner along a second direction, the side panels (30) and the base (10) are perpendicular to each other, the second direction and the first direction are perpendicular to each other, and the fixing member (20) is clamped between the two side panels (30) and is detachably connected to the side panels (30).

3. The test tool according to claim 2, characterized in that: The connection mechanism further comprises a connection rod (40), first through holes (31) are arranged opposite to each other on the two side plates (30), a second through hole (21) is arranged on the fixing member (20), and the connection rod (40) passes through one of the first through holes (31), the second through hole (21) and the other first through hole (31) so as to detachably connect the fixing member (20) to the side plate (30).

4. The test tool according to claim 3, characterized in that: Limiting members are provided at both ends of the connecting rod (40) to prevent the connecting rod (40) from being separated from the side plate (30) and the fixing member (20).

5. The test tool according to claim 4, characterized in that: The connecting rod (40) comprises a latch pin, one end of which is provided with a limit head (41), and the other end of which is provided with a pin hole (42), through which a cotter pin can pass, and the limit head (41) and the cotter pin can jointly limit the latch pin from being separated from the side plate (30) and the fixing member (20).

6. The test tool according to claim 3, characterized in that: A plurality of the first through holes (31) are provided, and the plurality of the first through holes (31) are arranged at intervals along a third direction, and the third direction, the first direction and the second direction are all perpendicular.

7. The test tool according to claim 6, characterized in that: A first slide groove (11) is arranged on the base (10) along the second direction, and a slider (32) is arranged on each of the two side plates (30). The slider (32) can slide in the first slide groove (11), so that the two side plates (30) can move closer to or farther from each other along the second direction, so as to clamp the fixing member (20).

8. The test fixture according to claim 6, characterized in that: The base (10) is provided with a centering rod (50) at the center along the second direction, and the centering rod (50) can move along the third direction. The fixing member (20) is provided with a centering groove (22) along the third direction, and one end of the centering rod (50) is placed in the centering groove (22) and can slide along the centering groove (22).

9. The test tool according to claim 8, characterized in that: One end of the centering rod (50) inserted into the centering groove (22) is configured as a V-shaped end, and the centering groove (22) is configured as a V-shaped groove.

10. The test tool according to any one of claims 1 to 9, characterized in that: The material of the fixing member (20) includes polyethylene.

Images