CN202060920U - Artificial hip joint simulation testing machine - Google Patents
Artificial hip joint simulation testing machine Download PDFInfo
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- CN202060920U CN202060920U CN2011201027982U CN201120102798U CN202060920U CN 202060920 U CN202060920 U CN 202060920U CN 2011201027982 U CN2011201027982 U CN 2011201027982U CN 201120102798 U CN201120102798 U CN 201120102798U CN 202060920 U CN202060920 U CN 202060920U
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Abstract
The utility model relates to an artificial hip joint simulation testing machine which comprises a frame, a swinging mechanism, a flexible loading mechanism, a rotating mechanism and a hip joint clamping mechanism, wherein the lower bottom of the frame is provided with the swinging mechanism for swinging an acetabulum test piece, the swinging mechanism is provided with the hip joint clamping mechanism, the hip joint clamping mechanism is fixed on the surface of the frame and is connected with the rotating mechanism in a transmission manner, the upper end of the hip joint clamping mechanism is connected with the flexible loading mechanism, and the flexible loading mechanism is fixed on the surface of the frame by a lever bracket. The artificial hip joint simulation testing machine is used for precisely simulating the real moving state and the working environment of the artificial hip joint in the laboratory environment so as to ensure that the frication mechanism and the attrition form of the joint to be tested in the test process to be consist with that of an actual service condition to precisely and reliably study and test parameters of the biomechanical property of artificial joint materials.
Description
Technical field
This utility model relates to a kind of artificial hip joint testing machine, the especially a kind of kinestate of human hip acetabular bone and artificial hip joint testing machine of stressing conditions of simulating.
Background technology
Hip joint is the most complicated joint of human body stress, simultaneously also be joint disease easily send out the position, common have traumatic disease, ischemic necrosis disease, degeneration, a struvite and neoplastic disease.Patient's number that hip replacement surgery is accepted in the whole world every year has surpassed 600,000.Because along with the development of modern medical service technology, the situation of implementing the artificial hip joint replacing operation is more and more.The wearing and tearing of artificial joint can not only cause the destruction of articular prosthesis itself and cause that mechanicalness lost efficacy, and also can produce a large amount of wear particles and induce the dissolving of Periprosthetic bone.Studies show that the late period of artificial hip joint, the loosening foreign body reaction of being on the increase with wear particle (abrasive dust) and causing was relevant.Researcher has carried out big quantity research at design of artificial hip joint material and face coat both at home and abroad, and expectation alleviates wearing and tearing, reduces abrasive dust by changing pair materials, but it is not good to produce effects.Therefore must carry out systematic study to intensity, creep and the wearing and tearing of artificial hip joint.The report of domestic relevant hip joint simulation test machine development aspect seldom, the research of comparing external simulation test machine also has a certain distance.
At present, a kind of simulation tester for artificial hip joint can be simulated the actual motion state and the working environment of human hip as far as possible accurately in laboratory environment, can make under friction mechanism that tested joint produces in process of the test, wear form and the actual service conditions consistent, thereby can be accurately, the biomechanical property parameter of research test artificial joint material reliably.
Summary of the invention
This utility model is that a kind of simulation tester for artificial hip joint will be provided, this testing machine is realized the stretching, extension flexing (FE) of human hip under the bionical state or interior receipts abduction (AA), inward turning outward turning (IER) motion by five mechanisms, and this testing machine has that exploitation is simple, practical, characteristics such as expansibility is strong, cost performance height.
The technical solution of the utility model is: a kind of simulation tester for artificial hip joint, comprise frame, swing mechanism, flexible load maintainer, rotating mechanism, hip joint clamp mechanism, be characterized in: the swing mechanism that is used to swing the acetabular bone test specimen is installed on the frame bottom surface, the hip joint clamp mechanism is installed above the swing mechanism, and the hip joint clamp mechanism is fixed on the rack table, and be in transmission connection with rotating mechanism, hip joint clamp mechanism upper end connects flexible load maintainer, and flexible load maintainer is fixed on the rack table by lever dolly.
Flexible load maintainer comprises die springs, pressure motor and screw axis, fulcrum support, lever, die springs are enclosed within on the screw axis of pressure motor, and the lower end is connected with the movable axis cover, the upper end is connected with fixed hub, and the fixed hub upper end connects lever, and lever and lever dolly flexibly connect.
Lever and the fixed hub link ratio to lever dolly centre of gyration distance and lever and hip joint clamp mechanism link to lever dolly centre of gyration distance is 2.5:1.
Be provided with the acetabular bone cup in the swing mechanism, acetabular bone cup upper end is provided with the inclined plane, and the angle of inclination on inclined plane is 23 °.
The beneficial effects of the utility model are: test function of the present utility model realizes the Shen Zhan flexing (FE) of human hip under the bionical state or interior receipts abduction (AA), Nei Xuan outward turning (IER) motion.Realize following two kinds of different forms of motion simultaneously:
(1) multidirectional complex method: by swing mechanism and the rotation rotating mechanism carry out compound, can realize three on the direction motion (FE, AA, IER).
(2) one way system: i.e. the rotation of swing mechanism on the single direction or rotating mechanism, this kinestate is mainly finished by single motion of mechanism.
This utility model adopts the mimic motion of triaxial test machine truer than pressing close to more of diaxon, and the experimental result that obtains is more consistent with clinical data.This testing machine has simple, practical, the characteristics such as expansibility is strong, cost performance height developed.
Description of drawings
Fig. 1 is this practical trapezium structure sketch map;
Fig. 2 is that acetabular bone test specimen seat is installed schematic perspective view;
Fig. 3 is the die springs scheme of installation;
Fig. 4 is pressure motor and screw axis schematic perspective view;
Fig. 5 is the lever segment structural representation of flexible load maintainer.
The specific embodiment
Below in conjunction with accompanying drawing and embodiment this utility model is further described.
As shown in Figure 1, simulation tester for artificial hip joint of the present utility model comprises frame 1, swing mechanism 2, flexible load maintainer 3, rotating mechanism 4, hip joint clamp mechanism 5.
The swing mechanism 2 that is used to swing the acetabular bone test specimen is installed on frame 1 bottom surface, hip joint clamp mechanism 5 is installed above the swing mechanism 2, and hip joint clamp mechanism 5 is fixed on frame 1 table top, and be in transmission connection with rotating mechanism 4, hip joint clamp mechanism 5 upper ends connect flexible load maintainer 3, and flexible load maintainer 3 is fixed on frame 1 table top by lever dolly 9.
As shown in Figure 4, flexible load maintainer 3 comprises die springs 7, pressure motor 8 and screw axis, and fulcrum support 9, lever 10, die springs 7 is enclosed within on the screw axis of pressure motor 8 (Fig. 3), and the lower end is connected with the movable axis cover, and the upper end is connected with fixed hub.The fixed hub upper end connects lever 10, and lever 10 flexibly connects 9(Fig. 5 with lever dolly 9).
As shown in Figure 5, lever 10 and the fixed hub link ratio to lever dolly 9 centre of gyration distances and lever 10 and hip joint clamp mechanism 5 links to lever dolly 9 centre of gyration distances is 2.5:1.
Be provided with acetabular bone cup 6 in the swing mechanism, acetabular bone cup 6 upper ends are provided with the inclined plane, and the angle of inclination on inclined plane is 23 ° (Fig. 2).
Swing mechanism 2 mainly is the kinestate of simulation human hip acetabular bone, drive the acetabular bone test specimen 6(that tilts to be installed on the chunk and comprise the mortar cup test specimen that is fixed therein) make cross-like composite slide fricting movement around the femoral head test specimen, can simulate internal/external rotations, stretching, extension/curvature movement preferably.Flexible load maintainer 3 is by the stressing conditions of die springs 7 simulation human hips in human body, considered the way of realization of the size and Orientation and the load mode of load, by analysis to the hip joint stress under the human body normal gait, the suffered stress of femoral head is periodic pulsating stress in the time of can drawing normal gait, its loading direction becomes 23 ° of angles approximately with vertical direction, and the load of bearing of hip joint is periodic bimodal load.By above-mentioned loading analysis, testing machine adopts load load mode straight down to load, and the angle of inclination of acetabular bone cup 6 is set to 23 ° simultaneously, promptly simulates the angle of resultant direction and vertical direction.Load loading to test specimen realizes by die springs 7, die springs 7 is enclosed within 8 in pressure motor and goes up and fix with axle sleeve, the rise and fall of the rotating band moving axis cover of motor make die springs 7 that deformation take place, and spring is produced corresponding pressure or pulling force.Can draw the load peaks that the femoral hip prosthesis head bears according to the hip joint stress curve is 3000N, and the maximum pressure that spring can provide is 1200N, and the required load requirement that provides of testing machine so just can't be provided.In order to solve this difficult problem, used lever construction 9, by the magnification ratio of lever 1:2.5, the pressure that makes spring 7 be produced can reach the desired load peaks 3000N of testing machine by the amplification of lever construction 9.Use die springs 7 to make whole load loading system have certain flexibility, thus the micro-moving frictional wear between acetabular bone test specimen 6 and femoral head when better simulating the artificial hip joint motion.Rotating mechanism 4 mainly is the kinestate of femoral hip prosthesis head in the simulation human hip, and the femoral head that can drive artificial hip joint on the hip joint clamp mechanism 5 is received the abduction exercise around acetabular bone test specimen 6 composite slide fricting movements in can simulating preferably.Hip joint clamp mechanism 5 mainly is to play the fixedly effect of femoral hip prosthesis head, makes it to contact with acetabular bone, and in the process of experiment, acetabular bone and femoral head mutual friction are mutually accepted the load that flexible load maintainer produces simultaneously.
Claims (4)
1. simulation tester for artificial hip joint, comprise frame (1), swing mechanism (2), flexible load maintainer (3), rotating mechanism (4), hip joint clamp mechanism (5), it is characterized in that: the swing mechanism (2) that is used to swing the acetabular bone test specimen is installed on described frame (1) bottom surface, hip joint clamp mechanism (5) is installed above the swing mechanism (2), and hip joint clamp mechanism (5) is fixed on frame platform (1) face, and be in transmission connection with rotating mechanism (4), hip joint clamp mechanism (5) upper end connects flexible load maintainer (3), and flexible load maintainer (3) is fixed on frame (1) table top by lever dolly (9).
2. simulation tester for artificial hip joint according to claim 1, it is characterized in that: described flexible load maintainer (3) comprises die springs (7), pressure motor (8) and screw axis, fulcrum support (9), lever (10), die springs (7) is enclosed within on the screw axis of pressure motor (8), the lower end is connected with the movable axis cover, the upper end is connected with fixed hub, and the fixed hub upper end connects lever (10), and lever (10) flexibly connects with lever dolly (9).
3. simulation tester for artificial hip joint according to claim 1 is characterized in that: be provided with acetabular bone cup (6) in the described swing mechanism (2), acetabular bone cup (6) upper end is provided with the inclined plane, and the angle of inclination on inclined plane is 23 °.
4. simulation tester for artificial hip joint according to claim 2 is characterized in that: described lever (10) and the fixed hub link ratio to lever dolly (9) centre of gyration distance and lever (10) and hip joint clamp mechanism (5) link to lever dolly (9) centre of gyration distance is 2.5:1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201027982U CN202060920U (en) | 2011-04-11 | 2011-04-11 | Artificial hip joint simulation testing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201027982U CN202060920U (en) | 2011-04-11 | 2011-04-11 | Artificial hip joint simulation testing machine |
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| Publication Number | Publication Date |
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| CN202060920U true CN202060920U (en) | 2011-12-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011201027982U Expired - Fee Related CN202060920U (en) | 2011-04-11 | 2011-04-11 | Artificial hip joint simulation testing machine |
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| CN (1) | CN202060920U (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102525691A (en) * | 2012-02-01 | 2012-07-04 | 中国矿业大学 | Air cylinder self-resetting type hip joint test machine |
| CN102871778A (en) * | 2012-09-29 | 2013-01-16 | 上海大学 | Multi-workbench detecting and experimenting device for artificial hip joint abrasion |
| CN103257076A (en) * | 2013-05-27 | 2013-08-21 | 济南大学 | Artificial hip joint dynamic fatigue wear sample clamp and tester |
| CN104271080A (en) * | 2012-03-06 | 2015-01-07 | 陶瓷技术有限责任公司 | Device for testing a ceramic socket insert for hip joint implants |
| CN106373473A (en) * | 2016-11-30 | 2017-02-01 | 中南大学 | Experimental device for simulating friction of knee joint of human body |
| CN106913400A (en) * | 2017-03-24 | 2017-07-04 | 清华大学 | Fluid pressure type Three Degree Of Freedom artificial hip joint testing machine |
| CN110934673A (en) * | 2018-09-21 | 2020-03-31 | 北京理工大学 | Artificial limb chiral energy testing equipment |
| CN112816233A (en) * | 2021-01-04 | 2021-05-18 | 青岛理工大学 | Ball socket type bionic joint lubricating film measuring device |
| CN115444634A (en) * | 2022-09-26 | 2022-12-09 | 合肥熠品医药科技有限公司 | Joint prosthesis test simulation device |
-
2011
- 2011-04-11 CN CN2011201027982U patent/CN202060920U/en not_active Expired - Fee Related
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102525691B (en) * | 2012-02-01 | 2014-08-20 | 中国矿业大学 | Air cylinder self-resetting type hip joint test machine |
| CN102525691A (en) * | 2012-02-01 | 2012-07-04 | 中国矿业大学 | Air cylinder self-resetting type hip joint test machine |
| WO2013113199A1 (en) * | 2012-02-01 | 2013-08-08 | 中国矿业大学 | Gas cylinder self-resetting-type hip-joint testing machine |
| CN104271080B (en) * | 2012-03-06 | 2017-07-11 | 陶瓷技术有限责任公司 | For the device checked the ceramic ball-and-socket insert for hip implant |
| CN104271080A (en) * | 2012-03-06 | 2015-01-07 | 陶瓷技术有限责任公司 | Device for testing a ceramic socket insert for hip joint implants |
| CN102871778B (en) * | 2012-09-29 | 2014-12-31 | 上海大学 | Multi-workbench detecting and experimenting device for artificial hip joint abrasion |
| CN102871778A (en) * | 2012-09-29 | 2013-01-16 | 上海大学 | Multi-workbench detecting and experimenting device for artificial hip joint abrasion |
| CN103257076A (en) * | 2013-05-27 | 2013-08-21 | 济南大学 | Artificial hip joint dynamic fatigue wear sample clamp and tester |
| CN106373473A (en) * | 2016-11-30 | 2017-02-01 | 中南大学 | Experimental device for simulating friction of knee joint of human body |
| CN106373473B (en) * | 2016-11-30 | 2018-11-30 | 中南大学 | It is a kind of for simulating the experimental provision of human body knee joint friction |
| CN106913400A (en) * | 2017-03-24 | 2017-07-04 | 清华大学 | Fluid pressure type Three Degree Of Freedom artificial hip joint testing machine |
| CN110934673A (en) * | 2018-09-21 | 2020-03-31 | 北京理工大学 | Artificial limb chiral energy testing equipment |
| CN112816233A (en) * | 2021-01-04 | 2021-05-18 | 青岛理工大学 | Ball socket type bionic joint lubricating film measuring device |
| CN115444634A (en) * | 2022-09-26 | 2022-12-09 | 合肥熠品医药科技有限公司 | Joint prosthesis test simulation device |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111207 Termination date: 20120411 |