Combined acetabular component separating force testing device

Abstract

The utility model provides a combined acetabulum component separating force test device which comprises an installation box, a positioning assembly and a detection assembly. The positioning assembly comprises a first telescopic rod arranged in the mounting cavity, a clamping plate arranged on the telescopic rod and penetrating through the top wall of the mounting cavity, an arc-shaped positioning groove formed in the top wall of the mounting box and a sinking positioning groove formed in the clamping plate. The detection assembly comprises an L-shaped mounting frame arranged in the mounting box, a guide rail arranged on the L-shaped mounting frame, a tension and compression detection mechanism arranged on the guide rail and a torsion detection mechanism arranged on the guide rail, and through the arrangement of the tension and compression detection mechanism and the torsion detection mechanism, three tests can be completed through one device, so that the test is more convenient, and the test efficiency is improved. Due to the arrangement of the guide rails, the tension and compression detection mechanisms and the torsion detection mechanisms can be arranged on the guide rails or taken down from the guide rails, and a plurality of tests can be completed at the same time by arranging the tension and compression detection mechanisms and the torsion detection mechanisms on the guide rails.

Description

Technical Field

[0001] The utility model relates to the technical field of medical equipment detection, in particular to a combined acetabulum component separation force testing device. Background Art

[0002] The combined acetabular component separation force test is a test to measure the connection strength between the acetabular cup and the acetabular liner to detect whether the combined acetabular component is qualified. The test includes axial separation test, eccentric pull-out test and torsional separation test.

[0003] The combined acetabular component separation force testing device in the prior art needs to use three different testing devices when performing the above three tests. After completing one test, the next testing device needs to be replaced, which is cumbersome to operate and has low testing efficiency. Summary of the invention

[0004] The utility model aims to provide a combined acetabular component separation force testing device to solve the problems raised in the above background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A combined acetabular component separation force testing device, comprising:

[0007] An installation box, wherein an installation cavity is provided in the installation box;

[0008] A positioning assembly, the positioning assembly comprising a telescopic rod 1 arranged in the installation cavity, a clamping plate arranged on the telescopic rod 1 and passing through the top wall of the installation cavity, an arc-shaped positioning groove arranged on the top wall of the installation box, and a sinking positioning groove arranged on the clamping plate, the telescopic rod 1 is used to drive the clamping plate to move downward to clamp the acetabulum component arranged on the arc-shaped positioning groove; and

[0009] A detection component, the detection component includes an L-shaped mounting frame arranged on the mounting box, a guide rail opened on the L-shaped mounting frame, a tension and compression detection mechanism arranged on the guide rail, and a torsion detection mechanism arranged on the guide rail. The tension and compression detection mechanism and the torsion detection mechanism can be moved or removed on the guide rail. When the acetabulum component is arranged on the sinking positioning groove, the tension and compression detection mechanism can detect the axial separation force of the acetabulum component. When the acetabulum component is arranged in the arc positioning groove, the tension and compression detection mechanism can detect the eccentric pull-out force of the acetabulum component, and the torsion detection mechanism can detect the torsion separation torque of the acetabulum component.

[0010] Preferably, the tension and compression detection mechanism includes a slider 1 arranged on the guide rail, a telescopic rod 2 arranged on the slider 1, a tension and compression sensor arranged on the telescopic rod 2, an insertion rod arranged on the tension and compression sensor, and a pull tab arranged on the insertion rod.

[0011] Preferably, the slider 1 can move along the guide rail, so that the insertion rod is driven by the telescopic rod 2 to squeeze the acetabulum component set on the sunken positioning groove, so that the tension and compression sensor detects the axial separation force, or the pull tab is driven by the telescopic rod 2 to pull the acetabulum component set on the arc positioning groove, so that the tension and compression sensor detects the eccentric pulling force.

[0012] Preferably, the torsion detection mechanism includes a slider 2 arranged on the guide rail, a telescopic rod 3 arranged on the slider 2, a mounting plate arranged on the telescopic rod 3, a motor arranged on the mounting plate, a torque sensor arranged on the motor, and a ball head arranged on the torque sensor.

[0013] Preferably, the slider 2 can move along the guide rail, and the telescopic rod 3 drives the ball head to contact the acetabulum component arranged on the arc-shaped positioning groove, so that the motor applies a torsional force to the acetabulum component through the ball head, and the torque sensor detects the torsional separation torque.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] The utility model comprises an installation box, a positioning component and a detection component, wherein an installation cavity is arranged in the installation box, the positioning component comprises a telescopic rod arranged in the installation cavity, a clamping plate arranged on the telescopic rod and passing through the top wall of the installation cavity, an arc-shaped positioning groove arranged on the top wall of the installation box and a sunken positioning groove arranged on the clamping plate, and the detection component comprises an L-shaped installation frame arranged in the installation box, a guide rail opened on the L-shaped installation frame, a tension and compression detection mechanism arranged on the guide rail and a torsion detection mechanism arranged on the guide rail. The utility model can complete three tests by one device through the arrangement of the tension and compression detection mechanism and the torsion detection mechanism, thereby making the test more convenient. The arrangement of the guide rail enables the tension and compression detection mechanism and the torsion detection mechanism to be arranged on or removed from the guide rail, and multiple tension and compression detection mechanisms and torsion detection mechanisms can be arranged on the guide rail to complete multiple tests at the same time, thereby improving the test efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the utility model;

[0017] Figure 2 It is a cross-sectional structural schematic diagram of the utility model;

[0018] Figure 3This is a schematic diagram of the state of conducting an axial separation force test of the utility model;

[0019] Figure 4 It is a schematic diagram of the state of conducting an eccentric pull-out force test of the utility model;

[0020] Figure 5 It is a schematic diagram of the state of conducting a torsional separation torque test of the utility model.

[0021] In the figure: 1. Installation box; 2. Installation cavity; 3. Telescopic rod 1; 4. Clamping plate; 5. Arc positioning groove; 6. Sinking positioning groove; 7. L-shaped mounting frame; 8. Slider 1; 9. Telescopic rod 2; 10. Tension and compression sensor; 11. Insert rod; 12. Pull tab; 13. Slider 2; 14. Telescopic rod 3; 15. Installation plate; 16. Motor; 17. Torque sensor; 18. Ball head. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figures 1 to 5 , the utility model provides a technical solution:

[0024] A combined acetabular component separation force testing device, comprising:

[0025] The installation box 1 is a rectangular hollow box body with an installation cavity 2 provided inside. The installation cavity 2 is used for installing the positioning component.

[0026] The positioning assembly includes a telescopic rod 3, a clamping plate 4, an arc-shaped positioning groove 5 and a sinking positioning groove 6; the telescopic rod 3 is arranged in the installation cavity 2, and the telescopic rod 3 is fixedly connected to the bottom wall of the installation cavity 2 by setting bolts, etc., the clamping plate 4 is arranged on the telescopic rod 3 and passes through the top wall of the installation cavity 2 and extends out of the installation cavity 2, the clamping plate 4 is fixedly connected to the clamping plate 4 by setting bolts, etc., the clamping plate 4 is movably connected to the top wall of the installation cavity 2, and the clamping plate 4 includes a horizontal plate connected to the telescopic rod 3 and a horizontal plate arranged on both sides of the horizontal plate and connected to the installation cavity 2. An inverted L-shaped pressure plate movably connected to the top wall, an arc-shaped positioning groove 5 is opened on the top wall of the installation box 1, the arc-shaped mounting groove is arranged between the two inverted L-shaped pressure plates of the clamping plate 4, the shape of the arc-shaped mounting groove is consistent with the shape of the acetabulum component, and the sinking positioning groove 6 is arranged on the edge of the top end of the inverted L-shaped pressure plate of the positioning plate, and the telescopic rod 3 is used to drive the clamping plate 4 to move up and down, so that the inverted L-shaped pressure plate of the clamping plate 4 can press and fix the acetabulum component set in the arc-shaped positioning groove 5, so that the acetabular cup of the acetabular component opens upward, and the acetabular cup of the acetabular component can be inverted on the sinking positioning groove 6.

[0027] The detection component includes an L-shaped mounting frame 7, a guide rail, a tension and compression detection mechanism and a torsion detection mechanism. The tension and compression detection mechanism includes a slider 1 8, a telescopic rod 2 9, a tension and compression sensor 10, an insertion rod 11 and a pull piece 12. The torsion detection mechanism includes a slider 2 13, a telescopic rod 3 14, a mounting plate 15, a motor 16, a torque sensor 17 and a ball head 18. The L-shaped mounting frame 7 is arranged on the mounting box 1, and the L-shaped mounting frame 7 is fixedly connected to the top surface of the mounting box 1 by setting bolts or welding. The guide rail is opened on the L-shaped mounting frame 7, and the slider 1 8 is arranged on the guide rail. The slider 1 8 is movably connected to the guide rail. The slider 1 8 can be moved on the guide rail. The slider 1 8 can be removed from the guide rail or reinstalled on the guide rail. The telescopic rod 2 9 is arranged on the slider 1 8. The telescopic rod 2 9 is fixedly connected to the slider 1 8 by setting bolts. The tension and compression sensor 10 is arranged on the telescopic rod 2 9. The tension and compression sensor 10 is fixed to the telescopic rod 2 9 and the tension and compression sensor 10 by setting a mounting block. The tension and compression sensor 10 can use the U9C miniature force sensor of Huoding Bikai (Suzhou) Electronic Measurement Technology Co., Ltd. The insertion rod 11 is arranged on the tension and compression sensor 10, and the insertion rod 11 is arranged on the mounting block so that the mounting block is fixedly connected to the telescopic rod 29 and the insertion rod 11 respectively. The pull piece 12 is arranged on the insertion rod 11, and the pull piece 12 is fixedly connected to the insertion rod 11 by welding or the like. When the acetabular cup of the acetabular component can be inverted on the sinking positioning groove 6, the telescopic rod 29 is extended to drive the insertion rod 1 1 passes through the opening on the acetabular cup and presses against the acetabular liner, so that the telescopic rod can apply axial force to the acetabular liner, so that the tension and compression sensor 10 records the axial separation force of the acetabular component. When the inverted L-shaped pressure plate of the clamping plate 4 presses and fixes the acetabular component set in the arc-shaped positioning groove 5, the telescopic rod 2 9 can drive the pull tab 12 to extend into the acetabular cup and move the slider 1 8 so that the pull tab 12 hooks the acetabular liner, so that the telescopic rod 2 9 contracts, the pull tab 12 pulls the acetabular liner, and the tension and compression sensor 10 records the eccentric pull-out force.

[0028] The slider 2 13 is arranged on the guide rail, and the slider 2 13 is movably connected to the guide rail. The slider 2 13 can be removed from the guide rail or reinstalled on the guide rail. The telescopic rod 3 14 is arranged on the slider 2 13, and the telescopic rod 3 14 is fixedly connected to the slider 2 13 by setting bolts or the like. The mounting plate 15 is arranged on the telescopic rod 3 14, and the mounting plate 15 is fixedly connected to the telescopic rod 3 14 by setting bolts or the like. The motor 16 is arranged on the mounting plate 15, and the motor 16 is fixedly connected to the mounting plate 15 by setting bolts or the like. The torque sensor 17 is arranged on the motor 16, and the torque sensor 17 is fixedly connected to the motor 16 by setting a coupling or the like. The torque sensor 17 can select the TN torque transmission sensor of Huodingge Bikai (Suzhou) Electronic Measurement Technology Co., Ltd., and the ball head 18 is arranged on the torque sensor 1 7, the ball head 18 is fixedly connected with the torque sensor 17 by setting a coupling, etc., the ball head 18 can be extended into the acetabular liner, and a convex block is arranged on the ball head 18. When the convex block is extended into the acetabular liner, it can contact with the slot pre-opened in the acetabular liner, and the telescopic rod three 14 is extended to drive the ball head 18 to extend into the inverted L-shaped pressure plate of the clamping plate 4 and be pressed and fixed in the acetabular liner of the arc-shaped positioning groove 5, so that the torque sensor 17 is set with a coupling and is fixedly connected with the ball head 18 of the acetabular component, the motor 16 applies torque to the acetabular component, and the torque sensor 17 detects the torsional separation torque of the acetabular component. The telescopic rod one 3 and the telescopic rod three 14 can use the LA37 linear push rod of Linak Transmission System (Shenzhen) Co., Ltd., and the telescopic rod two can use the LA33 linear push rod of Linak Transmission System (Shenzhen) Co., Ltd.

[0029] Working principle: When in use, when conducting an axial separation force test, the acetabular cup of the acetabular component can be inverted on the sinking positioning groove 6, and the slide rail 1 is set on the guide rail, so that the telescopic rod 2 9 is extended to drive the insertion rod 11 to pass through the opening on the acetabular cup and press against the acetabular liner, so that the telescopic rod can apply an axial force to the acetabular liner, and the tension and compression sensor 10 records the axial separation force of the acetabular component. When conducting an eccentric pull-out force test, the inverted L-shaped pressure plate of the clamping plate 4 can press the acetabular component set in the arc-shaped positioning groove 5, and the slider 1 8 is set on the guide rail. The telescopic rod 2 9 can drive the pull tab 12 to extend into the acetabular cup, and the slider 1 8 is moved to make the pull tab 12 hook The acetabular liner is held, the telescopic rod 2 9 is contracted, the pull tab 12 pulls the acetabular liner, and the tension and compression sensor 10 records the eccentric pulling force. When the torsional separation torque test is performed, the inverted L-shaped pressure plate of the clamping plate 4 can be pressed against the acetabular component set in the arc-shaped positioning groove 5, the slider 1 8 is set on the guide rail, the telescopic rod 3 14 is extended to drive the ball head 18 to extend into the inverted L-shaped pressure plate of the clamping plate 4 to press and fix the acetabular liner set in the arc-shaped positioning groove 5, and the torque sensor 17 is set with a coupling to press and fix the ball head 18 of the acetabular component. The motor 16 applies torque to the acetabular component, and the torque sensor 17 detects the torsional separation torque of the acetabular component.

[0030] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A combined acetabular component separation force testing device, characterized in that: include: An installation box, wherein an installation cavity is provided in the installation box; A positioning assembly, the positioning assembly comprising a telescopic rod 1 arranged in the installation cavity, a clamping plate arranged on the telescopic rod 1 and passing through the top wall of the installation cavity, an arc-shaped positioning groove arranged on the top wall of the installation box, and a sinking positioning groove arranged on the clamping plate, the telescopic rod 1 being used to drive the clamping plate to move downward to clamp the acetabulum component arranged on the arc-shaped positioning groove; as well as A detection component, the detection component includes an L-shaped mounting frame arranged on the mounting box, a guide rail opened on the L-shaped mounting frame, a tension and compression detection mechanism arranged on the guide rail, and a torsion detection mechanism arranged on the guide rail. The tension and compression detection mechanism and the torsion detection mechanism can be moved or removed on the guide rail. When the acetabular component is arranged on the sinking positioning groove, the tension and compression detection mechanism can detect the axial separation force of the acetabular component. When the acetabular component is arranged in the arc positioning groove, the tension and compression detection mechanism can detect the eccentric pull-out force of the acetabular component, and the torsion detection mechanism can detect the torsion separation torque of the acetabular component.

2. A combined acetabular component separation force testing device according to claim 1, characterized in that: The tension and compression detection mechanism includes a slider 1 arranged on the guide rail, a telescopic rod 2 arranged on the slider 1, a tension and compression sensor arranged on the telescopic rod 2, an insertion rod arranged on the tension and compression sensor, and a pull tab arranged on the insertion rod.

3. A combined acetabular component separation force testing device according to claim 2, characterized in that: The slider 1 can move along the guide rail, so that the insertion rod can squeeze the acetabulum component set on the sunken positioning groove under the drive of the telescopic rod 2, so that the tension and compression sensor can detect the axial separation force, or the pull tab can pull the acetabulum component set on the arc positioning groove under the drive of the telescopic rod 2, so that the tension and compression sensor can detect the eccentric pulling force.

4. The combined acetabular component separation force testing device according to claim 1, characterized in that: The torsion detection mechanism includes a slider 2 arranged on the guide rail, a telescopic rod 3 arranged on the slider 2, a mounting plate arranged on the telescopic rod 3, a motor arranged on the mounting plate, a torque sensor arranged on the motor, and a ball head arranged on the torque sensor.

5. A combined acetabular component separation force testing device according to claim 4, characterized in that: The second slider can move along the guide rail, and the third telescopic rod drives the ball head to contact the acetabulum component arranged on the arc-shaped positioning groove, so that the motor applies a torsional force to the acetabulum component through the ball head, and the torque sensor detects the torsional separation torque.

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