CN2716828Y - Experimental apparatus for simulating artificial knee joint with loaded multi-directional movement and physiological impact - Google Patents
Experimental apparatus for simulating artificial knee joint with loaded multi-directional movement and physiological impact Download PDFInfo
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- CN2716828Y CN2716828Y CN 200420078051 CN200420078051U CN2716828Y CN 2716828 Y CN2716828 Y CN 2716828Y CN 200420078051 CN200420078051 CN 200420078051 CN 200420078051 U CN200420078051 U CN 200420078051U CN 2716828 Y CN2716828 Y CN 2716828Y
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Abstract
The utility model discloses an experimental apparatus for simulating artificial knee joint with loaded multi-directional movement and physiological impact. The apparatus includes a cup body rotating along the vertical axis, a joint cartilage is arranged in the cup body, a rubbing pair comprises the ball head rotating along the horizontal axis and the joint cartilage, and the vertical axis is connected with a loading device upwards. Elastic dampings are connected around the joint cartilage, a ball is arranged between the bottom of the cup and the joint cartilage and the vertical axis is connected with a variable load loading device upwards. The utility model has the advantages that the creepage of the knee joint cartilage is realized under the alternation of friction, which is more close to the condition of actual motion, force and friction of the human body intrinsic joint rubbing pair. Besides, the clinical application of the replacement joint can be simulated better, and the quality and the service life of the artificial joint can be evaluated accurately.
Description
One, technical field
The utility model belongs to a kind of experimental provision of simulation artificial knee joint clinical practice, impacts loading artificial knee joint analogue experiment installation in particular for multidirectional motion and the physiology of estimating artificial kneed performance and serviceable life.
Two, background technology
Along with the raising of people's quality of life, health care and rehabilitation outcome, joint replacement has been widely used in arthritic treatment of late stage.Wearing and tearing are principal elements that joint prosthesis late period is loosening and lost efficacy, and the motion of knee joint friction pair and load mode have material impact to its wearing and tearing.The abrasion experiment device of the simulation joint motions that the development energy is good, significant to estimating joint prosthesis wearing quality, serviceable life and quality and developing novel long-life abrasion-resistant joint prosthesis.
The knee joint simulated experiment machine of the Howmedica Inc of U.S. joint prosthesis manufacturer development, its ball and socket joint is ° positive and negative rotation along transverse axis ± 30, and articular cartilage loads constant along the positive and negative rotation of Z-axis.And Finland academy of sciences subsidizes a kind of knee joint analogue experiment installation of development, above-mentioned knee joint simulated experiment machine is improved, kept along transverse axis with along the positive and negative rotation of Z-axis, improved aspect is to have increased translational degree of freedom of cartilage card, the cartilage card acts on this translational degree of freedom direction side-to-side movement of lower edge repeatedly in friction force, still is constant but load.But loading constant is not the actual impact loading of human synovial; Even the cartilage card can translation, but its motion is an one dimension with respect to cup, and knee cartilage will take place under the alternating action of friction force along the wriggling on the friction force direction in the actual body, and cartilage planar is a two dimensional motion with respect to cup.
Three, summary of the invention
The purpose of this utility model is to provide a kind of physiological movement of human body knee joint friction pair and the multidirectional motion and physiology impact loading artificial knee joint analogue experiment installation of loading characteristic of more approaching, so that estimate the quality and the serviceable life of joint prosthesis more accurately, better simulate clinical practice.
For achieving the above object, multidirectional motion of the utility model and physiology impact and load the artificial knee joint analogue experiment installation, comprise the cup that rotates along Z-axis, articular cartilage is set in cup, form friction pair along bulb and articular cartilage that transverse axis rotates, Z-axis is axially gone up and is connected a charger, it is characterized in that connecting elastic damping around the articular cartilage, between bottom of cup and articular cartilage ball is set, Z-axis is axially gone up and is connected a changing load charger.
Advantage of the present utility model has been to realize the wriggling of knee cartilage under the friction force alternating action, more near the actual motion of human body intrinsic articulation friction pair, stressed and friction condition, the clinical practice of replacement joint be can better simulate, and the quality and the serviceable life of joint prosthesis estimated accurately.
Four, description of drawings
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.
Fig. 1 is that multidirectional motion of the utility model and physiology impact loading artificial knee joint analogue experiment installation sketch.
Fig. 2 is that multidirectional motion of the utility model and physiology impact the physiology impact loading curve figure that loads the artificial knee joint analogue experiment installation.
Five, embodiment
Multidirectional motion of the utility model and physiology impact and load the artificial knee joint analogue experiment installation, the cup 3 that comprises rotation, articular cartilage 5 is set in cup 3, the bulb 1 of forming friction pair with articular cartilage 5 rotates along transverse axis 2 positive and negative 30 degree angles, wherein bulb 1 surface finish is to minute surface, diameter is 20～60mm, chooses 40mm.Contain synovia in the cup 3 and spend the angles rotation with positive and negative 5～15 along Z-axis 7, connect 4 elastic dampings 4 around the articular cartilage 5, between cup 3 bottoms and articular cartilage 5, ball 6 is set, so can the wriggling of assurance dish sample cartilage on along continuous straight runs under the friction force effect, the wriggling of articular cartilage 5 in participating in friction force effect lower horizontal plane, participate in cup 3 simultaneously along the positive and negative rotation of Z-axis.But load-variable device 8 usefulness cams 9, spring 10 and lever 11 link gears are connected Z-axis and axially go up loading physiology shock load, and this changing load charger 8 can also adopt hydraulic system mechanism formation or bent axle, spring 10 and lever 11 link gears to constitute.Physiology shock load curve such as Fig. 2 that changing load charger 8 loads, bulb 1 and articular cartilage 5 are done fricting movement under the physiology impact loading.
Claims (5)
1, a kind of multidirectional motion and physiology impact and load the artificial knee joint analogue experiment installation, comprise the cup [3] that rotates along Z-axis [7], articular cartilage [5] is set in cup [3], form friction pair along the bulb [1] that transverse axis [2] rotates with articular cartilage [5], Z-axis [7] is axially gone up and is connected a charger, it is characterized in that articular cartilage [5] connects elastic damping [4] all around, between cup [3] bottom and articular cartilage [5] ball [6] is set, Z-axis [7] is axially gone up and is connected a changing load charger [8].
2, multidirectional motion according to claim 1 and physiology impact and load the artificial knee joint analogue experiment installation, it is characterized in that articular cartilage [5] connects 4 elastic dampings [4] all around.
3, multidirectional motion according to claim 1 and 2 and physiology impact and load the artificial knee joint analogue experiment installation, it is characterized in that changing load charger [8] is made of cam [9], spring [10] and lever [11] link gear.
4, multidirectional motion according to claim 1 and 2 and physiology impact and load the artificial knee joint analogue experiment installation, it is characterized in that changing load charger [8] is made of hydraulic system mechanism.
5, multidirectional motion according to claim 1 and 2 and physiology impact and load the artificial knee joint analogue experiment installation, it is characterized in that changing load charger [8] is made of bent axle, spring [10] and lever [11] link gear.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420078051 CN2716828Y (en) | 2004-07-27 | 2004-07-27 | Experimental apparatus for simulating artificial knee joint with loaded multi-directional movement and physiological impact |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420078051 CN2716828Y (en) | 2004-07-27 | 2004-07-27 | Experimental apparatus for simulating artificial knee joint with loaded multi-directional movement and physiological impact |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2716828Y true CN2716828Y (en) | 2005-08-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 200420078051 Expired - Fee Related CN2716828Y (en) | 2004-07-27 | 2004-07-27 | Experimental apparatus for simulating artificial knee joint with loaded multi-directional movement and physiological impact |
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| CN (1) | CN2716828Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101551315B (en) * | 2009-05-14 | 2011-06-29 | 上海交通大学 | Dual purpose friction testing arrangement |
| CN103926158A (en) * | 2013-01-16 | 2014-07-16 | 南京理工大学 | Cartilage creep mechanical performance testing device |
| CN105319141A (en) * | 2015-10-12 | 2016-02-10 | 中国矿业大学 | Parallel-connection artificial knee joint testing machine |
| CN105352872A (en) * | 2015-11-25 | 2016-02-24 | 重庆医科大学附属永川医院 | Device for detecting permeability of cartilage |
| CN112807124A (en) * | 2021-02-09 | 2021-05-18 | 天津理工大学 | Knee joint impact simulation loading device |
-
2004
- 2004-07-27 CN CN 200420078051 patent/CN2716828Y/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101551315B (en) * | 2009-05-14 | 2011-06-29 | 上海交通大学 | Dual purpose friction testing arrangement |
| CN103926158A (en) * | 2013-01-16 | 2014-07-16 | 南京理工大学 | Cartilage creep mechanical performance testing device |
| CN103926158B (en) * | 2013-01-16 | 2016-04-27 | 南京理工大学 | A kind of cartilage Creep Mechanics performance testing device |
| CN105319141A (en) * | 2015-10-12 | 2016-02-10 | 中国矿业大学 | Parallel-connection artificial knee joint testing machine |
| CN105319141B (en) * | 2015-10-12 | 2018-08-21 | 中国矿业大学 | A kind of parallel connected bionic knee joint testing machine |
| CN105352872A (en) * | 2015-11-25 | 2016-02-24 | 重庆医科大学附属永川医院 | Device for detecting permeability of cartilage |
| CN112807124A (en) * | 2021-02-09 | 2021-05-18 | 天津理工大学 | Knee joint impact simulation loading device |
| CN112807124B (en) * | 2021-02-09 | 2024-04-16 | 天津理工大学 | Knee joint impact simulation loading device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |