CN114659880B - Multi-motion mode artificial joint friction and wear experimental device - Google Patents
Multi-motion mode artificial joint friction and wear experimental device Download PDFInfo
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- CN114659880B CN114659880B CN202210393871.9A CN202210393871A CN114659880B CN 114659880 B CN114659880 B CN 114659880B CN 202210393871 A CN202210393871 A CN 202210393871A CN 114659880 B CN114659880 B CN 114659880B
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- 230000033001 locomotion Effects 0.000 claims abstract description 46
- 238000012360 testing method Methods 0.000 claims abstract description 40
- 230000005540 biological transmission Effects 0.000 claims abstract description 18
- 230000001105 regulatory effect Effects 0.000 claims abstract description 11
- 239000004570 mortar (masonry) Substances 0.000 claims description 15
- 239000003638 chemical reducing agent Substances 0.000 claims description 7
- 210000001503 joint Anatomy 0.000 claims description 7
- 210000004394 hip joint Anatomy 0.000 claims description 5
- 238000002474 experimental method Methods 0.000 claims description 4
- 210000000629 knee joint Anatomy 0.000 claims description 4
- 238000005286 illumination Methods 0.000 claims description 2
- 239000002131 composite material Substances 0.000 abstract 1
- 238000004088 simulation Methods 0.000 description 6
- 238000005299 abrasion Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 208000012659 Joint disease Diseases 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
Classifications
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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
- G01N3/02—Details
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N19/00—Investigating materials by mechanical methods
-
- 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
- G01N3/56—Investigating resistance to wear or abrasion
-
- 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
- G01N2203/0005—Repeated or cyclic
-
- 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
-
- 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
- G01N2203/005—Electromagnetic means
-
- 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
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/022—Environment of the test
- G01N2203/0222—Temperature
-
- 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
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/06—Indicating or recording means; Sensing means
- G01N2203/067—Parameter measured for estimating the property
- G01N2203/0676—Force, weight, load, energy, speed or acceleration
Abstract
The invention discloses a multi-movement-mode artificial joint friction and wear experimental device which comprises a frame, a joint buckling transmission module, a joint internal and external rotation micromotion module, a loading module and a control system, wherein the frame is provided with a plurality of sliding blocks; according to the invention, by utilizing the characteristics of a crank rocker and adjusting the length of the stepless speed regulating telescopic rod, the swing amplitude of the artificial joint is changed, and the friction and wear test of the artificial joint swinging by different angles in different movement modes is realized; simulating internal and external rotation by utilizing reciprocating motion, and avoiding the interference of friction scratches caused by whole-circle motion on a joint ball test piece; the connector in the fixing device is utilized to achieve the switching between single motion and composite motion, so that stable operation can be ensured after switching; the functions are cooperatively coupled, so that the friction and wear working conditions of the artificial joint can be effectively tested, the friction and wear testing capability of different joint parts and different movement modes of the artificial joint is improved, and the synthetic movement test and the single movement test are effectively performed.
Description
Technical Field
The invention relates to the field of artificial joints, in particular to a friction and wear testing device which can perform multi-motion mode friction and wear experimental tests on an artificial hip joint and a knee joint.
Background
Since the introduction of the artificial joint technology, the artificial joint is widely applied, brings good news to patients with the joint disease, and reduces the pain of the patients. But brings with it a number of technical problems. The existing artificial joint simulation test machines are more in types, wherein the swing shaft type simulates the swing motion of the hip joint on three planes by means of the relative motion between the base and the inclined base, but the swing angles of the artificial joint simulation test machines in all directions are different, and the artificial joint simulation test machines cannot perform synthetic motion; the multi-axis type swing angle is controlled by different shafting, and different angle adjustment can be performed, but the multi-axis also causes the mechanism design to be complex, so that a plurality of additional factors are added, and the experimental accuracy is reduced; the pin-disc type experiment machine can better analyze the friction and wear performance of the test sample, but the motion synthesis cannot be achieved, and the damage of the motion to the artificial joint cannot be tested to the greatest extent. Therefore, an artificial joint friction and wear experimental device is needed at present, can perform synthetic motion, can measure friction and wear of a single motion mode, and reduces interference of other factors caused by excessive shafting. The current frictional wear testing machine only carries out experimental tests on a single joint, and cannot achieve a series of technical problems such as frictional wear tests on different parts of knee joints, hip joints and the like.
Disclosure of Invention
In order to solve the existing technical problems, the invention aims to provide a multi-movement-mode friction and wear experimental device, wherein a joint buckling transmission module of the device can simulate buckling of a sagittal plane of an artificial joint and abduction and adduction of a coronal plane; the joint inner and outer rotation micromotion module can simulate the rotation of the cross section of the artificial joint; the loading module adjusts the motion mode of the device, and switches multiple motions or single motions; the large modules are cooperatively coupled, so that the friction and wear test of the artificial joint under the multi-motion mode can be realized. The method can test the most serious friction and abrasion mode under a single movement mode and can also measure the friction and abrasion conditions of multiple movement modes. The friction and wear test device can test friction and wear conditions under different stress levels at different angles, has extremely strong comprehensive performance, and provides reliable experimental data for artificial joint friction and wear tests. Meanwhile, the abrasion condition of the device is observed, the friction condition of the device is explored under different lubrication conditions, and the friction experiment is carried out in multiple motion modes, so that the device has more scientificity and reality.
In order to achieve the above purpose, the design idea of the invention is as follows:
the utility model provides a many motion mode artificial joint frictional wear experimental apparatus which characterized in that: comprises a frame (E), a joint buckling transmission module (A), a joint inner and outer rotating micro-motion module (C), a loading module (B) and a control system (D);
the joint buckling transmission module consists of a stepping motor (A-1), a stepless speed regulating telescopic rod (A-2), a connecting rod (A-3), a supporting track (A-4), a joint ball head test piece (A-5) and a pneumatic cylinder (A-6), wherein the components form a crank rocker mechanism, the stepless speed regulating telescopic rod (A-2) transmits the power of the stepping motor (A-1) to the connecting rod (A-3), and the connecting rod (A-3) drives the pneumatic cylinder (A-6) to swing along the supporting track (A-4) to realize a joint buckling movement mode;
the joint inner and outer rotating micro-motion module consists of a mortar cup (C-1), a clamping plate (C-2), a mortar cup supporting table (C-3), a thrust bearing (C-4), a transmission shaft (C-5), a rotary platform speed reducer (C-6) and a variable speed motor (C-7), wherein the clamping plate (C-2) is connected with the mortar cup supporting table (C-3) through bolts, the positions of the bolts are adjusted, the clamping plate (C-2) is moved, the mortar cups (C-1) with different specifications can be replaced, the variable speed motor (C-7) is connected with the rotary platform speed reducer (C-6), power is output to the transmission shaft (C-5), and the mortar cup supporting table (C-3) is driven to reciprocate for realizing the joint inner and outer rotating motion mode;
the loading module is composed of a fixing device (B-1), a connector (B-2) and a pressure sensor (B-3), wherein the pressure sensor (B-3) is arranged on the side face of the pneumatic cylinder (A-6), the connector (B-2) is arranged in the fixing device (B-1), when only the artificial joint is simulated to perform internal and external rotation, the connector (B-1) can be connected with the pneumatic cylinder (A-6), so that the pneumatic cylinder (A-6) is fixed, and when only the artificial joint buckling motion or the artificial joint buckling and internal and external rotation synthetic motion are simulated, the connector (B-2) is separated from the pneumatic cylinder (A-6), and the pneumatic cylinder (A-6) can swing, so that the switching of multiple motion modes is realized;
the control system comprises a control console (D-1), a temperature control box (D-2) and an illuminating lamp (D-3), wherein the temperature control box (D-2) provides working environment temperature for artificial joints, the illuminating lamp (D-3) provides illumination for facilitating observation, and the control console (D-1) cooperates and controls the operation of the whole equipment through a control circuit;
the artificial joint friction and wear experimental device under the multiple motion modes is characterized in that: the length of the connecting rod (A-3) is 165mm, the telescopic range of the stepless speed regulating telescopic rod (A-2) is 35-80 mm, and the swing amplitude range of the pneumatic cylinder (A-6) is 0-110 degrees, so that the friction and wear experiment test of the artificial joint in different swing angles is realized.
The artificial joint friction and wear experimental device under the multiple motion modes is characterized in that: the diameter range of the joint ball head test piece (A-5) is 18-28 mm, and the joint ball head test piece is used for simulating joints of different parts of a body and adjusting the pressure of the pneumatic cylinder (A-6), so that the friction and wear test of the artificial joint under different load pressures is realized.
The artificial joint friction and wear experimental device under the multiple motion modes is characterized in that: the support rail (A-4) can limit the sliding track of the pneumatic cylinder (A-6), ensure that the pressure can be transmitted to the joint ball test piece (A-5), the support rail (A-4) is provided with angle scales, and when the pneumatic cylinder (A-6) swings, the support rail (A-4) can correspondingly display angles.
The artificial joint friction and wear experimental device under the multiple motion modes is characterized in that: the variable-speed motor (C-7) can adjust the inching frequency and amplitude, so as to simulate the internal and external rotation of the hip joint by 0-60 degrees and simulate the internal and external rotation of the knee joint by 0-5 degrees.
Compared with the prior art, the invention has the advantages that: the device can perform friction and wear experimental tests on different joint parts; the device can perform friction and wear experimental tests under a multi-motion mode, and realize motion simulation of the coronal plane, sagittal plane and cross section of the artificial joint; the device can simulate the friction and wear condition of the cross section in a certain angle, and compared with the whole rotation, the device can simulate the motion condition of the artificial joint more truly; the functions are cooperatively coupled, so that the frictional wear condition of the artificial joint can be tested by a single motion mode, buckling, internal and external rotation and stretching can be synthesized, and the frictional wear condition under multiple motion modes can be tested, so that the frictional wear condition of different joints can be tested, the application range is wider, and the universality is strong.
Drawings
FIG. 1 is a schematic diagram of an artificial joint frictional wear test device in a multi-motion mode
FIG. 2 is a schematic view of a joint flexion transmission module
FIG. 3 is a schematic view of a telescopic rod structure
FIG. 4 is a schematic view of a micro-motion module with inner and outer rotation of the joint
FIG. 5 is a schematic view of the structure of the cup support table and the clamping device
FIG. 6 is a schematic view of a fixing device and a connector
Marked in the figure as: a-1 variable speed motor; a-2 stepless speed regulating telescopic rod; a-3 connecting rod; a-4 support rail; a-5 joint ball test piece; a-6 pneumatic cylinder; b-1 fixing device; a B-2 connector; b-3 a pressure sensor; c-1, a mortar cup; c-2 clamping plates; c-3 a cup supporting table; c-4 thrust bearings; c-5 transmission shafts; c-6 a rotating platform speed reducer; a C-7 variable speed motor; d-1 console; d-2, a temperature control box; d-3, a lighting lamp; e machine frame.
Detailed Description
According to the inventive concept described above, the present invention employs the following embodiments:
an artificial joint friction and wear experimental device in a multi-motion mode is shown in fig. 1, and comprises a frame (E), a joint buckling transmission module (A), a joint inner and outer rotation micro-motion module (C), a loading module (B) and a control system (D);
the joint buckling transmission module (A) is shown in fig. 2, and consists of a stepping motor (A-1), a stepless speed regulating telescopic rod (A-2), a connecting rod (A-3), a supporting track (A-4), a joint ball test piece (A-5) and a pneumatic cylinder (A-6), wherein the components can form a crank rocker mechanism, the stepping motor (A-1) rotates in a whole circle, power is transmitted to the connecting rod (A-3) through the stepless speed regulating telescopic rod (A-2), the connecting rod (A-3) drives the whole pneumatic cylinder (A-6) to swing, and the position of a piston rod is adjusted to replace the joint ball test pieces (A-5) with different specifications, so that buckling motion simulation of the joint ball test pieces is realized.
The joint inner and outer rotation micro-motion module (C) is composed of a mortar cup (C-1), a clamping plate (C-2), a mortar cup supporting table (C-3), a thrust bearing (C-4), a transmission shaft (C-5), a rotary platform speed reducer (C-6) and a variable speed motor (C-7), wherein the variable speed motor (C-7) is connected with the rotary platform speed reducer (C-6) as shown in fig. 4, and drives the transmission shaft (C-5) and the mortar cup supporting table (C-3) to perform reciprocating micro-motion, and the clamping plate (C-2) is used for fixing the mortar cup (C-1) as shown in fig. 5, so that the motion simulation of the inner and outer rotation of the artificial joint is realized.
The loading module is composed of a fixing device (B-1), a connector (B-2) and a pressure sensor (B-3), wherein the pressure sensor (B-3) is arranged on the side surface of the pneumatic cylinder (A-6), as shown in figure 6, the connector (B-2) is arranged in the fixing device (B-1), when only the artificial joint is simulated to perform internal and external rotation, the connector (B-1) can be connected with the pneumatic cylinder (A-6), so that the pneumatic cylinder (A-6) is fixed, and when only the artificial joint buckling motion or the artificial joint buckling motion and the internal and external rotation are simulated, the connector (B-2) is separated from the pneumatic cylinder (A-6), and the pneumatic cylinder (A-6) can swing, so that the switching of multiple motion modes is realized;
the control system comprises a control console (D-1), a temperature control box (D-2) and an illuminating lamp (D-3), wherein the temperature control box (D-2) provides working environment temperature for artificial joints, and the control console (D-1) cooperates and controls the operation of the whole equipment through a control circuit and comprises reciprocating inching control of a variable speed motor (C-7) in an intra-joint external rotating inching module (C) and length adjustment of a stepless speed regulating telescopic rod (A-2) in a joint buckling transmission module (A).
The present invention is not limited to the above embodiments, and any person who makes the technical solution with the same or similar to the present invention in the light of the present invention should be known to fall within the scope of the present invention.
The technology, shape, and construction parts of the present invention, which are not described in detail, are known in the art.
Claims (5)
1. The utility model provides a many motion mode artificial joint frictional wear experimental apparatus which characterized in that: comprises a frame (E), a joint buckling transmission module (A), a joint inner and outer rotating micro-motion module (C), a loading module (B) and a control system (D);
the joint buckling transmission module consists of a stepping motor (A-1), a stepless speed regulating telescopic rod (A-2), a connecting rod (A-3), a supporting track (A-4), a joint ball head test piece (A-5) and a pneumatic cylinder (A-6), wherein the components form a crank rocker mechanism, the stepless speed regulating telescopic rod (A-2) transmits the power of the stepping motor (A-1) to the connecting rod (A-3), and the connecting rod (A-3) drives the pneumatic cylinder (A-6) to swing along the supporting track (A-4) to realize a joint buckling movement mode;
the joint inner and outer rotating micro-motion module consists of a mortar cup (C-1), a clamping plate (C-2), a mortar cup supporting table (C-3), a thrust bearing (C-4), a transmission shaft (C-5), a rotary platform speed reducer (C-6) and a variable speed motor (C-7), wherein the clamping plate (C-2) is connected with the mortar cup supporting table (C-3) through bolts, the positions of the bolts are adjusted, the clamping plate (C-2) is moved, the mortar cups (C-1) with different specifications can be replaced, the variable speed motor (C-7) is connected with the rotary platform speed reducer (C-6), power is output to the transmission shaft (C-5), and the mortar cup supporting table (C-3) is driven to reciprocate for realizing the joint inner and outer rotating motion mode;
the loading module is composed of a fixing device (B-1), a connector (B-2) and a pressure sensor (B-3), wherein the pressure sensor (B-3) is arranged on the side face of the pneumatic cylinder (A-6), the connector (B-2) is arranged in the fixing device (B-1), when only the artificial joint is simulated to perform internal and external rotation, the connector (B-2) can be connected with the pneumatic cylinder (A-6), so that the pneumatic cylinder (A-6) is fixed, and when only the artificial joint buckling motion or the artificial joint buckling and internal and external rotation synthetic motion are simulated, the connector (B-2) is separated from the pneumatic cylinder (A-6), and the pneumatic cylinder (A-6) can swing, so that the switching of multiple motion modes is realized;
the control system comprises a control console (D-1), a temperature control box (D-2) and an illuminating lamp (D-3), wherein the temperature control box (D-2) provides working environment temperature for artificial joints, the illuminating lamp (D-3) provides illumination for facilitating observation, and the control console (D-1) cooperates and controls the operation of the whole equipment through a control circuit;
the joint buckling transmission module can simulate buckling of a sagittal plane of an artificial joint and abduction and adduction of a coronal plane; the joint inner and outer rotating micro-motion module can simulate the rotation of the cross section of the artificial joint; the two modules are cooperatively coupled, so that the friction and wear experimental test of the artificial joint in a multi-motion mode can be realized.
2. The multi-motion mode artificial joint frictional wear experimental device according to claim 1, wherein: the length of the connecting rod (A-3) is 165mm, the telescopic range of the stepless speed regulating telescopic rod (A-2) is 35-80 mm, and the swing amplitude range of the pneumatic cylinder (A-6) is 0-110 degrees, so that the friction and wear experiment test of the artificial joint in different swing angles is realized.
3. The multi-motion mode artificial joint frictional wear experimental device according to claim 1, wherein: the diameter range of the joint ball head test piece (A-5) is 18-28 mm, and the joint ball head test piece is used for simulating joints of different parts of a body and adjusting the pressure of the pneumatic cylinder (A-6), so that the friction and wear test of the artificial joint under different load pressures is realized.
4. The multi-motion mode artificial joint frictional wear experimental device according to claim 1, wherein: the support rail (A-4) can limit the sliding track of the pneumatic cylinder (A-6), ensure that the pressure can be transmitted to the joint ball test piece (A-5), the support rail (A-4) is provided with angle scales, and when the pneumatic cylinder (A-6) swings, the support rail (A-4) can correspondingly display angles.
5. The multi-motion mode artificial joint frictional wear experimental device according to claim 1, wherein: the variable-speed motor (C-7) can adjust the inching frequency and amplitude, so that the internal and external rotation of the hip joint of 0-60 degrees can be simulated, the internal and external rotation of the knee joint of 0-5 degrees can be simulated, and the rotational friction and wear experimental test of different parts of the artificial joint can be realized.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210393871.9A CN114659880B (en) | 2022-04-14 | 2022-04-14 | Multi-motion mode artificial joint friction and wear experimental device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210393871.9A CN114659880B (en) | 2022-04-14 | 2022-04-14 | Multi-motion mode artificial joint friction and wear experimental device |
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| CN114659880A CN114659880A (en) | 2022-06-24 |
| CN114659880B true CN114659880B (en) | 2024-04-12 |
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| US7493828B2 (en) * | 2006-08-02 | 2009-02-24 | Orthopaedic Research Laboratories | Simulator for evaluating artifical joint specimens and associated method |
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2022
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