CN112378768A - Mechanical property testing device for artificial knee joint gasket stand column - Google Patents
Mechanical property testing device for artificial knee joint gasket stand column Download PDFInfo
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- CN112378768A CN112378768A CN202011252903.0A CN202011252903A CN112378768A CN 112378768 A CN112378768 A CN 112378768A CN 202011252903 A CN202011252903 A CN 202011252903A CN 112378768 A CN112378768 A CN 112378768A
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- knee joint
- artificial knee
- artifical
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
- G01N3/10—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces generated by pneumatic or hydraulic pressure
- G01N3/12—Pressure testing
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0001—Type of application of the stress
- G01N2203/0003—Steady
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0014—Type of force applied
- G01N2203/0016—Tensile or compressive
- G01N2203/0019—Compressive
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/003—Generation of the force
- G01N2203/0042—Pneumatic or hydraulic means
- G01N2203/0044—Pneumatic means
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0058—Kind of property studied
- G01N2203/0069—Fatigue, creep, strain-stress relations or elastic constants
- G01N2203/0073—Fatigue
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- Analytical Chemistry (AREA)
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- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Prostheses (AREA)
Abstract
The invention discloses a device for testing the mechanical property of an artificial knee joint gasket upright column, which is characterized in that: linear guide install on the base top surface, the slider is installed on linear guide, the frock platform is installed on the slider, cylinder mount pad fixed mounting is on the base, the cylinder is installed on the cylinder mount pad, the load sensor front end is installed on frock platform trailing flank and the load sensor rear end passes through floating joint and air cylinder piston rod end-to-end connection, artifical knee joint thighbone condyle cooperation piece is installed on frock platform top surface, artifical knee joint thighbone condyle is installed to the front side of artifical knee joint thighbone condyle cooperation piece, the crack department between artifical knee joint thighbone condyle and the artifical knee joint thighbone condyle cooperation piece is provided with artifical knee joint liner. The invention can adjust the air inlet pressure by loading in the horizontal direction through the air cylinder, thereby conveniently adjusting the loading load in the horizontal direction, can be adapted to artificial knee joint gaskets with different sizes by matching with the sliding rail and the sliding block, and has simple operation.
Description
Technical Field
The invention belongs to the technical field of artificial knee joint tests, and particularly relates to a device for testing mechanical properties of an artificial knee joint gasket stand column.
Background
With the aging of human body and the influence of various joint diseases or trauma on human joints, the joint kinematic pair is partially or completely damaged, which causes the inconvenience of movement of patients and even the complete failure of joint functions. In response to this problem, modern medicine has primarily replaced defective natural joints of the human body with artificial joint implants, clinically known as artificial joint replacement. The artificial joint replacement can relieve and eliminate the pain of the patient, rebuild the joint movement, help the patient to recover the normal activity and improve the life quality.
The knee joint is the joint with the most complex structure and function of the human body, and has large motion amplitude, large bearing stress, high use frequency and high injury rate. Because the knee joint rolls and slides in the movement process, the upright post of the PS type artificial knee joint pad plays most of the restraint role on the far end of the femur. Therefore, the mechanical property of the artificial knee joint gasket stand column needs to be tested to ensure that the technical requirements are met, and at present, no simple and effective testing device exists in China and can test the mechanical property of the artificial knee joint gasket stand column.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a device for testing the mechanical property of an artificial knee joint gasket upright post, aiming at the defects of the prior art, the device can be used for loading in the horizontal direction through an air cylinder, can adjust air inlet pressure, thereby conveniently adjusting the loading load in the horizontal direction, can be adapted to artificial knee joint gaskets in different sizes by matching with a slide rail and a slide block, is simple to operate, can freely adjust the position of a tooling platform, and is convenient to use by adapting to the artificial knee joint gaskets in different shapes and specifications.
In order to achieve the technical purpose, the technical scheme adopted by the invention is as follows:
the utility model provides an artifical knee joint liner stand mechanical properties testing arrangement which characterized in that: the knee joint prosthesis comprises a base, a linear guide rail, a sliding block, a tool platform, a fixing bolt, a load sensor, an air cylinder mounting seat, an artificial knee joint femoral condyle matching block, an artificial knee joint gasket and an artificial knee joint femoral condyle, wherein the linear guide rail is fixedly arranged on the top surface of the base, the sliding block is arranged on the linear guide rail, the tool platform is fixedly arranged on the sliding block, the air cylinder mounting seat is fixedly arranged on the base, the air cylinder is fixedly arranged on the air cylinder mounting seat, the front end of the load sensor is arranged on the rear side surface of the tool platform through the fixing bolt, the rear end of the load sensor is connected with the tail end of an air cylinder piston rod through a floating joint, the artificial knee joint femoral condyle matching block is fixedly arranged on the top surface of the tool platform, and the front side of the artificial knee, an artificial knee joint gasket is arranged at a crack between the artificial knee joint femoral condyle and the artificial knee joint femoral condyle matching block.
The top surface of the base is provided with a plurality of T-shaped grooves.
The cylinder mounting seat is in a T-shaped structural form and is fixedly mounted on the base through a T-shaped bolt and a nut.
The cylinder is provided with a flow speed regulating valve.
Both sides of foretell frock platform bottom all have the slider through screw fixed mounting.
The device can be used for loading in the horizontal direction through the air cylinder, can adjust the air inlet pressure, and further conveniently adjust the loading load in the horizontal direction, can be adapted to artificial knee joint gaskets in different sizes by matching with the linear guide rail and the sliding block, is simple to operate, and can freely adjust the position of the tooling platform to adapt to the artificial knee joint gaskets in different shapes and specifications; the stability of the installed sliding block is improved by adopting a combination form of the linear guide rail and the sliding block, and the condition that the sliding block shakes after being installed is avoided; the two sliding blocks and the two linear guide rails are respectively matched to slide, so that the stability of the tool platform can be greatly improved, and the condition that the tool platform is inclined is avoided; the stability of cylinder mount pad is greatly improved to it, has avoided the condition that the cylinder mount pad trembles to appear in the work.
The invention has the advantages that: the air inlet pressure can be adjusted by loading in the horizontal direction through the air cylinder, so that the loading load in the horizontal direction can be conveniently adjusted, and the artificial knee joint gaskets in different sizes can be adapted by matching with the sliding rail and the sliding block; meanwhile, the device is simple to operate, and the position of the tool platform can be freely adjusted to adapt to the artificial knee joint pads with different shapes and specifications.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is an enlarged view of a portion of the structure of the present invention at A;
fig. 3 is an enlarged view of a part of the structure of the present invention B.
Wherein the reference numerals are: the device comprises a base 1, a linear guide rail 2, a sliding block 3, a tool platform 4, a fixing bolt 5, a load sensor 6, a cylinder 7, a cylinder mounting seat 8, an artificial knee joint femoral condyle matching block 9, an artificial knee joint liner 10 and an artificial knee joint femoral condyle 11.
Detailed Description
The following further describes embodiments of the present invention in conjunction with the attached figures:
the utility model provides an artifical knee joint liner stand mechanical properties testing arrangement which characterized in that: comprises a base 1, a linear guide rail 2, a slide block 3, a tool platform 4, a fixing bolt 5, a load sensor 6, a cylinder 7, a cylinder mounting seat 8, an artificial knee joint femoral condyle matching block 9, an artificial knee joint liner 10 and an artificial knee joint femoral condyle 11, wherein the linear guide rail 2 is fixedly mounted on the top surface of the base 1, the slide block 3 is mounted on the linear guide rail 2, the tool platform 4 is fixedly mounted on the slide block 3, the cylinder mounting seat 8 is fixedly mounted on the base 1, the cylinder 7 is fixedly mounted on the cylinder mounting seat 8, the front end of the load sensor 6 is mounted on the rear side surface of the tool platform 4 through the fixing bolt 5, the rear end of the load sensor 6 is connected with the end of a piston rod of the cylinder 7 through a floating joint, the artificial knee joint femoral condyle matching block 9 is fixedly mounted on the top surface of the tool platform 4, the artificial knee joint femoral matching block 9 is fixedly mounted on the front side of the artificial knee, an artificial knee joint gasket 10 is arranged at a crack between the artificial knee joint femoral condyle 11 and the artificial knee joint femoral condyle matching block 9.
In the embodiment, a plurality of T-shaped grooves are arranged on the top surface of the base 1.
In the embodiment, the cylinder mounting seat 8 is in a T-shaped structural form, and the cylinder mounting seat 8 is fixedly mounted on the base 1 through a T-shaped bolt and a nut. The stability of the cylinder mounting seat 8 can be greatly improved, and the condition that the cylinder mounting seat 8 shakes during working is avoided.
In the embodiment, the cylinder 7 is provided with a flow rate regulating valve. The air inlet pressure and the extension speed of the piston rod of the air cylinder 7 can be adjusted through the flow rate adjusting valve and the pressure reducing valve, so that the loading load and the loading speed in the horizontal direction can be conveniently adjusted.
In the embodiment, the two sides of the bottom of the tooling platform 4 are fixedly provided with the sliding blocks 3 through screws. The stability after the slider 3 installation can be improved, the situation of taking place the shake after the slider 3 installation is avoided.
The working principle of the invention is as follows: as shown in fig. 1, a linear guide rail 2 is fixed on a base 1 through a screw, and a slide block 3 can freely move on the linear guide rail 2; the tool platform 4 is fixed on the sliding block 3 through screws, the artificial knee joint gasket 10 is fixed on the tool platform 4, and the artificial knee joint gasket 10 can move together with the sliding block 3; the tooling platform 4 is connected with one end of a load sensor 6 through a fixing bolt 5, and the other end of the load sensor 6 is connected with a piston rod of a cylinder 7; the cylinder 7 is fixed in a T-shaped groove of the base 1 through the cylinder mounting seat 8, the cylinder can linearly move in the T-shaped groove of the base 1, the artificial knee joint femoral condyle 11 is fixed on the artificial knee joint femoral condyle matching block 9, a universal material testing machine or a fatigue testing machine can be used for loading the artificial knee joint femoral condyle matching block 9, so that the artificial knee joint femoral condyle 11 carries out load loading in the vertical direction on the artificial knee joint gasket 10, the piston rod of the cylinder 7 is controlled to stretch, the artificial knee joint gasket 10 can be loaded in the horizontal direction, and the load is displayed through the load sensor 6.
The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above-mentioned embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may be made by those skilled in the art without departing from the principle of the invention.
Claims (5)
1. The utility model provides an artifical knee joint liner stand mechanical properties testing arrangement which characterized in that: comprises a base (1), a linear guide rail (2), a sliding block (3), a tool platform (4), a fixing bolt (5), a load sensor (6), a cylinder (7), a cylinder mounting seat (8), an artificial knee joint femoral condyle matching block (9), an artificial knee joint gasket (10) and an artificial knee joint femoral condyle (11), wherein the linear guide rail (2) is fixedly arranged on the top surface of the base (1), the sliding block (3) is arranged on the linear guide rail (2), the tool platform (4) is fixedly arranged on the sliding block (3), the cylinder mounting seat (8) is fixedly arranged on the base (1), the cylinder (7) is fixedly arranged on the cylinder mounting seat (8), the front end of the load sensor (6) is arranged on the rear side surface of the tool platform (4) through the fixing bolt (5) and the rear end of the load sensor (6) is connected with the piston rod end of the cylinder (7) through a floating joint, artifical knee joint thighbone condyle cooperation piece (9) fixed mounting on frock platform (4) top surface, the front side fixed mounting of artifical knee joint thighbone condyle cooperation piece (9) have artifical knee joint thighbone condyle (11), artifical knee joint thighbone condyle (11) and artifical knee joint thighbone condyle cooperation piece (9) between crack department be provided with artifical knee joint gasket (10).
2. The device for testing the mechanical property of the artificial knee joint gasket upright post according to claim 1, is characterized in that: the top surface of the base (1) is provided with a plurality of T-shaped grooves.
3. The device for testing the mechanical property of the artificial knee joint gasket upright post according to claim 1, is characterized in that: the air cylinder mounting seat (8) is in a T-shaped structure form, and the air cylinder mounting seat (8) is fixedly mounted on the base (1) through T-shaped bolts and nuts.
4. The device for testing the mechanical property of the artificial knee joint gasket upright post according to claim 1, is characterized in that: and a flow speed regulating valve is arranged on the cylinder (7).
5. The device for testing the mechanical property of the artificial knee joint gasket upright post according to claim 1, is characterized in that: and the two sides of the bottom of the tooling platform (4) are fixedly provided with sliding blocks (3) through screws.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011252903.0A CN112378768B (en) | 2020-11-11 | 2020-11-11 | Mechanical property testing device for artificial knee joint gasket stand column |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011252903.0A CN112378768B (en) | 2020-11-11 | 2020-11-11 | Mechanical property testing device for artificial knee joint gasket stand column |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112378768A true CN112378768A (en) | 2021-02-19 |
| CN112378768B CN112378768B (en) | 2022-03-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011252903.0A Active CN112378768B (en) | 2020-11-11 | 2020-11-11 | Mechanical property testing device for artificial knee joint gasket stand column |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015223342A (en) * | 2014-05-28 | 2015-12-14 | 京セラメディカル株式会社 | Artificial joint implant testing apparatus |
| CN106769489A (en) * | 2016-12-29 | 2017-05-31 | 铜陵龙嘉机电有限公司 | For the frock of flat filament tensile test of weaving |
| CN106989989A (en) * | 2017-05-05 | 2017-07-28 | 核工业理化工程研究院 | A kind of Mechanics Performance Testing loading system |
| CN206609615U (en) * | 2017-08-04 | 2017-11-03 | 北京大学第三医院 | A kind of knee Stability and kinematics characteristic test device |
| CN211825409U (en) * | 2020-03-29 | 2020-10-30 | 济南美特斯测试技术有限公司 | Graphite electrode bending test accessory |
-
2020
- 2020-11-11 CN CN202011252903.0A patent/CN112378768B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015223342A (en) * | 2014-05-28 | 2015-12-14 | 京セラメディカル株式会社 | Artificial joint implant testing apparatus |
| CN106769489A (en) * | 2016-12-29 | 2017-05-31 | 铜陵龙嘉机电有限公司 | For the frock of flat filament tensile test of weaving |
| CN106989989A (en) * | 2017-05-05 | 2017-07-28 | 核工业理化工程研究院 | A kind of Mechanics Performance Testing loading system |
| CN206609615U (en) * | 2017-08-04 | 2017-11-03 | 北京大学第三医院 | A kind of knee Stability and kinematics characteristic test device |
| CN211825409U (en) * | 2020-03-29 | 2020-10-30 | 济南美特斯测试技术有限公司 | Graphite electrode bending test accessory |
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| Publication number | Publication date |
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| CN112378768B (en) | 2022-03-11 |
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