CN102871778A - Multi-workbench detecting and experimenting device for artificial hip joint abrasion - Google Patents
Multi-workbench detecting and experimenting device for artificial hip joint abrasion Download PDFInfo
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- CN102871778A CN102871778A CN201210372315XA CN201210372315A CN102871778A CN 102871778 A CN102871778 A CN 102871778A CN 201210372315X A CN201210372315X A CN 201210372315XA CN 201210372315 A CN201210372315 A CN 201210372315A CN 102871778 A CN102871778 A CN 102871778A
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- artificial hip
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/46—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor
- A61F2/468—Testing instruments for artificial joints
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
Abstract
The invention discloses a multi-workbench detecting and experimenting device for artificial hip joint abrasion. The multi-workbench detecting and experimenting device for artificial hip joint abrasion comprises a frame, an artificial hip joint driver and a controller. The artificial hip joint driver which is an artificial hip joint motion synthesizing mechanism comprises an artificial hip joint simulating workbench module, a tester workbench transmission module and a tester workbench loading module. Actual application conditions of the artificial hip joint can be reproduced authentically and reliably and abrasive particles similar to actual applications can be generated. The detecting and experimenting device has multiple workbenches, driven by a single motor, for testing a plurality of artificial hip joints simultaneously and has high compatibility, and is applicable to experiments on different specifications of artificial hip joints, high in work efficiency, low in manufacturing cost, and easy to operate.
Description
Technical field
The present invention relates to a kind of analytical test platform, a kind of abrasion detection experimental provision particularly can be for the artificial limb, and namely artificial hip joint carries out the fretting wear evaluation.
Background technology
At present, artificial joint is widely used in arthritic treatment of late stage, wound disables and the osteoma resection operation in, and become a kind of surgical operation of routine.The displacement of artificial joint includes the displacement in the joints such as hip, knee joint, shoulder, elbow, wrist, and wherein hip joint and knee joint are the main stressed and abrading sections of human body, and spoilage is high, so operation is mainly take it as main.In China, nearly 3,000 ten thousand people need to carry out artificial joint replacement, only have at present 30,000 covers, and wherein imported product accounts for 1/4 of market, and estimate that state-owned 100-150 ten thousand Human Osteoarthritis need be implemented prosthetic replacement's operation in every year, a year growth is about more than 25%.Along with the development of medical science, the demand of artificial joint can be increasing.
In the artificial joint practical application, the fretting wear in joint is one of subject matter, the wearing and tearing of self in being on active service comprising artificial joint, and the abrasive particle after the friction pair material wearing and tearing causes periarticular foreign body reaction, cause joint mobilization, finally cause artificial joint to lose efficacy.Research to artificial hip joint friction, wearing and tearing and lubricated aspect mainly is divided into research and extracorporeal simulating experiment research in the organism.Research in the organism is that artificial joint was implanted in the animal body after a period of time, by forms such as operation, dissections the abrasion condition in joint is observed, is analyzed and researched.Extracorporeal simulating experiment research mainly is as carrier, by the compound movement of simulation hip joint, the fretting wear situation of the artificial hip joint of analyzing and researching with the artificial hip joint simulated experiment machine.Because experimentation more complicated in the body, and experiment has a big risk, cost is high, the cycle is long, so than experiment in the body, experiment in vitro is easy to observation and analysis because its experimentation is comparatively simple, and the experiment interference factor is less, and the characteristics that cost is low have obtained promoting widely and using.And the difficult point of extracorporeal simulating experiment is that artificial hip joint and the joint in the simulation experiment in the actual use exist certain movement difference, i.e. the problem of truth reduction degree.Existing extracorporeal simulating experiment machine can't satisfy the evaluation requirement to the frictionand wear properties of the new material of artificial hip joint, great majority also are single workbench, can not satisfy well a plurality of artificial hip joint tests of different size and required precision, reliability is not high, and its technical scheme is desirable not enough.
Summary of the invention
In order to solve the prior art problem, the object of the present invention is to provide a kind of many workbench artificial hip joint abrasion detection experimental provision, have stronger compatibility, for the artificial hip joint experiment provides operating platform, cost is low, easy operating.Not only can simulate truly and can analyze and research to associated materials.In addition, by close or even identical abrasive particle form in apparatus of the present invention simulation experiment generation and the actual human body application process, on this basis, the city makes the analysis of foreign body reaction that synovial fluid performance, wear particle are caused etc. also have more actuality and science.
To achieve the above object of the invention, design of the present invention is:
Many workbench artificial hip joint abrasion detection experimental provision of the present invention comprises board framework, artificial hip joint analog operation platform module, testing machine workbench transmission module and testing machine workbench loads module.Artificial hip joint analog operation platform module supports supporting piece, tapered bearing cover and femoral ball swing lower tray parts by the inclined-plane and consists of, mainly connect by crossed roller bearing, guarantee whereby the relative motion between support member and the pallet, the multiplex (MUX) makes table apparatus by single motor-driven, forms the motion of apery body hip joint.Be, the middle cross beam on the board framework rotates the Rotary tray of planting by plane bearing; Rotary tray to the rotating shaft of downward-extension by a cover eccentric gearing module with variable speed driver connect, and the pallet of upper end is connected with the lower rotary table anchor clamps of experiment module; The board frame roof has a cover load-on module, and the center is fixedly connected with one and loads the top compression leg, and the middle part of top compression leg is added with load transducer, loads the top compression leg and is connected with the dynamo-electric loading system of experiment module.
According to above-mentioned inventive concept, the present invention adopts following technical proposals:
A kind of many workbench artificial hip joint abrasion detection experimental provision, comprise the board framework, artificial hip joint driving device and controller, the artificial hip joint driving device is fixed on the board framework, artificial hip joint consists of kinematic pair by artificial hip joint ball mortar and the artificial femur ball that mutual sphere cooperates, controller control artificial hip joint driving device is to artificial hip joint ball mortar and artificial femur ball difference output drive strength, the artificial hip joint driving device is the motion combination mechanism of artificial hip joint, comprise artificial hip joint analog operation platform module, testing machine workbench transmission module and testing machine workbench loads module, artificial hip joint is arranged between artificial hip joint analog operation platform module and the testing machine workbench loads module, artificial hip joint analog operation platform comprises two groups at least, corresponding with each artificial hip joint respectively, each is organized artificial hip joint analog operation platform module and all is fixed on the board framework by thrust ball bearing and angular contact ball bearing combination, axial and radial motion to artificial hip joint analog operation platform when artificial hip joint moves positions, each end that is transmitted of organizing the bottom of artificial hip joint analog operation platform also is connected with testing machine workbench transmission module clutch end by yielding coupling respectively, controller Control experiment machine worktable transmission module drives artificial hip joint analog operation platform and rotates, and then driving artificial femur ball rotates, testing machine workbench loads module is arranged at the top of board framework, testing machine workbench loads module also comprises two groups at least, corresponding with each artificial hip joint respectively, controller also Control experiment machine worktable load-on module axially loads artificial hip joint ball mortar, be fixedly installed the linear bearing guide pin bushing at the horizontal flat frame of the top layer of board framework, the linear bearing guide pin bushing is to the radial motion location of testing machine workbench loads module, and the stroke of the axially-movable of limit assay machine worktable load-on module.
Above-mentioned artificial hip joint analog operation platform module comprises the femoral ball top tray, the femoral ball lower tray, rotary-tray and inclined-plane support supporting piece, the femoral ball top tray connects by bolted with the femoral ball lower tray, artificial hip joint is arranged in the reservoir for lubricant, carry out the close-fitting sealing between reservoir for lubricant and the femoral ball top tray fixing, center in the femoral ball top tray is fixedly connected with by the bottom of conical surface blind hole with the artificial femur tumbler bearing, the top of artificial femur tumbler bearing is fixedly connected with the artificial femur ball, the bottom of rotary-tray is fixedly connected with the top that the inclined-plane supports supporting piece, the upper surface inclined-plane that the inclined-plane supports supporting piece connects with fixing by crossed roller bearing and crossed roller bearing axle sleeve with the femoral ball lower tray, the crossed roller bearing axle sleeve makes the fixing end cap of inner ring that is joined with bolts crossed roller bearing, the outer ring of crossed roller bearing fixedly end cap uses bolt to be connected and fixed the femoral ball lower tray, the bottom of rotary-tray also is fixedly connected with the short stepped drive shaft of an end, short stepped drive shaft directly and yielding coupling be fastenedly connected, carry out transmission of power, the resultant motion that artificial hip joint analog operation platform module drive artificial hip joint produces flexing and the sideshake of similar human hip.
Above-mentioned testing machine workbench transmission module comprises the underframe platform, eccentric rotating disk, variable speed electric motors, particularly and bent axle, all cranks are all combined by the first half and the latter half, eccentric rotating disk is positioned at the top of underframe platform, the underframe platform is fixed on the board framework, the bottom of underframe platform is fixedly connected with installation by the outside rack section of electric machine support variable speed electric motors, particularly, the transmission main shaft of variable speed electric motors, particularly is fixedly connected with by the bottom of shaft coupling with lower minister's crank, controller is also controlled variable speed electric motors, particularly to eccentric rotating disk transferring power, the first half of lower minister's crank is connected with eccentric dial rotation and locates, the latter half of lower minister's crank also is rotationally connected and locates by the lower crank dead eye of other angular contact ball bearing and underframe platform, also be provided with a short crank in bottom in order to the location eccentricity rotating disk, the short crank in bottom also by angular contact ball bearing respectively with the underframe platform be connected dial rotation and be connected and locate, at least also be provided with two top crank bearing oil slingers on the eccentric rotating disk, by deep groove ball bearing top, location crank is installed in the crank bearing oil slinger of top, be equipped with bearing (ball) cover constraint bearing on the end face of lower crank dead eye and top crank bearing oil slinger and move axially, the first half of top crank is fixedly connected with yielding coupling.
Above-mentioned testing machine workbench loads module comprises dynamo-electric loader, load axle, universal type shaft coupling and cup mortar retainer, load axle and also comprise at least two, the linear bearing guide pin bushing is fixedly connected on the board framework, loading axle endwisely slips in the linear bearing guide pin bushing, dynamo-electric loader also is fixed on the board framework, the external stability link of cup mortar retainer is fixedly connected with universal type shaft coupling one end, artificial hip joint ball mortar is installed in glass mortar retainer, controller is also controlled dynamo-electric loader by loading the axle imposed load, the load that the loading axle applies dynamo-electric loader by the universal type shaft coupling again is delivered to described cup mortar retainer, artificial hip joint is acted under the imposed load, between loading axle and universal type shaft coupling, also be provided with load transducer, the top of load transducer is fixedly connected with the bottom that loads axle, the bottom of load transducer is fixedly connected with the top of universal type shaft coupling by a threaded pin, and the signal output part of load transducer is connected with the signal input part of controller.
Above-mentioned artificial hip joint analog operation platform preferably includes 3 groups, and the top crank also preferably includes 3 simultaneously.
The angle of gradient that above-mentioned inclined-plane supports supporting piece 13 is 20 °～30 ° angles.
As improvement of the present invention, be threaded connection the installation brake bar in the side of femoral ball lower tray, brake bar is along with the femoral ball lower tray is rotated, when the free end of brake bar is resisted against on the column lever of board framework, carry out spacing to the femoral ball lower tray because of the rotation that the rubbing action that is subjected between artificial hip joint ball mortar and the artificial femur ball produces.
The present invention has following apparent outstanding substantive distinguishing features and remarkable advantage compared with prior art:
1. experimental provision of the present invention is used for the artificial hip joint simulation experiment, the true and reliable reproduction artificial hip joint of energy situation in actual applications, it makes platform for single motor-driven multiplex (MUX), can test simultaneously a plurality of artificial hip joints, have stronger compatibility, make platform for artificial hip joint provides the multiplex (MUX), can provide testing service for a plurality of artificial hip joints simultaneously, can be applicable to the experiment of different size artificial hip joint, high efficiency;
2. can reappear artificial hip joint situation in actual applications true and reliablely, produce with practical application in similar abrasive particle, namely the size of the abrasive particle that produces in the experimental machine, shape must with reality in consistent;
3. can support the lubricated test experiments of variety classes synovial fluid, analyze the situation of abrasive particle in the different synovial fluid that more do not coexist;
4. resultant motion mode is simple, and the simple less abrasive particle of meeting generation that moves back and forth helps to analyze the motion of comparison artificial hip joint and abrasive particle is big or small, the mutual relation of quantity;
5. low cost of manufacture, maintenance cost is low, and experimental reliability is high, easy operating, it is convenient to load and unload.
Description of drawings
Fig. 1 is the population structure schematic diagram of embodiment of the invention workbench more than artificial hip joint abrasion detection experimental provision.
Fig. 2 is the artificial hip joint analog operation platform modular structure schematic diagram of the embodiment of the invention one.
Fig. 3 is the testing machine workbench transmission module structural representation of the embodiment of the invention one.
Fig. 4 is the testing machine workbench loads modular structure schematic diagram of the embodiment of the invention one.
Fig. 5 is the population structure schematic diagram of embodiment of the invention workbench more than two artificial hip joint abrasion detection experimental provision.
Fig. 6 is the artificial hip joint analog operation platform modular structure schematic diagram of the embodiment of the invention two.
The specific embodiment
By reference to the accompanying drawings, details are as follows to the preferred embodiments of the present invention:
Embodiment one:
Referring to Fig. 1～Fig. 4, a kind of many workbench artificial hip joint abrasion detection experimental provision, comprise board framework 1, artificial hip joint driving device and controller, the artificial hip joint driving device is fixed on the board framework 1, artificial hip joint consists of kinematic pair by artificial hip joint ball mortar 7 and the artificial femur ball 8 that mutual sphere cooperates, controller control artificial hip joint driving device is to artificial hip joint ball mortar 7 and artificial femur ball 8 difference output drive strengths, the artificial hip joint driving device is the motion combination mechanism of artificial hip joint, comprise artificial hip joint analog operation platform module 9, testing machine workbench transmission module 2 and testing machine workbench loads module 6, artificial hip joint is arranged between artificial hip joint analog operation platform module 9 and the testing machine workbench loads module 6, artificial hip joint analog operation platform 9 comprises 3 groups, corresponding with each artificial hip joint respectively, each is organized artificial hip joint analog operation platform 9 modules and all is fixed on the board framework 1 by thrust ball bearing 4 and angular contact ball bearing 3 combinations, axial and radial motion to artificial hip joint analog operation platform 9 when artificial hip joint moves positions, each end that is transmitted of organizing the bottom of artificial hip joint analog operation platform 9 also is connected with testing machine workbench transmission module 2 clutch ends by yielding coupling 10 respectively, controller Control experiment machine worktable transmission module 2 drives artificial hip joint analog operation platform 9 and rotates, and then driving artificial femur ball 8 rotates, testing machine workbench loads module 6 is arranged at the top of board framework 1, testing machine workbench loads module 6 also comprises 3 groups, corresponding with each artificial hip joint respectively, controller also 6 pairs of artificial hip joint balls of Control experiment machine worktable load-on module mortar 7 axially loads, be fixedly installed linear bearing guide pin bushing 5 at the horizontal flat frame of the top layer of board framework 1, the radial motion location of 5 pairs of testing machine workbench loads of linear bearing guide pin bushing module 6, and the stroke of the axially-movable of limit assay machine worktable load-on module 6.The present embodiment can be used for the artificial hip joint friction needs experiment, can reappear artificial hip joint situation in actual applications true and reliablely, produce with practical application in similar abrasive particle, namely the size of the abrasive particle that produces in the experimental machine, shape must with reality in consistent.Can carry out the fretting wear evaluation for artificial hip joint, testing efficiency is high, low cost of manufacture, and the characteristics such as easy operating.
Referring to Fig. 2, in the present embodiment, artificial hip joint analog operation platform module 9 comprises femoral ball top tray 19, femoral ball lower tray 15, rotary-tray 11 and inclined-plane support supporting piece 13, femoral ball top tray 19 and femoral ball lower tray 15 connect by bolted, form the rotating disk clamp mechanism, artificial hip joint is arranged in the reservoir for lubricant 17, carry out the close-fitting sealing between reservoir for lubricant 17 and the femoral ball top tray 19 fixing, can support the lubricated test experiments of variety classes synovial fluid, analyze the situation of abrasive particle in the different synovial fluid that more do not coexist, center in femoral ball top tray 19 is fixedly connected with by the bottom of conical surface blind hole with artificial femur tumbler bearing 18, the top of artificial femur tumbler bearing 18 is fixedly connected with artificial femur ball 8, the bottom of rotary-tray 11 is fixedly connected with the top that the inclined-plane supports supporting piece 13, and the angle of gradient that the inclined-plane supports supporting piece 13 is 23 ° of angles.The upper surface inclined-plane that the inclined-plane supports supporting piece 13 connects with fixing by crossed roller bearing 14 and crossed roller bearing axle sleeve 21 with femoral ball lower tray 15, crossed roller bearing axle sleeve 21 makes the fixing end cap 16 of inner ring that is joined with bolts crossed roller bearing 14, the outer ring of crossed roller bearing 14 fixedly end cap 20 makes and is joined with bolts femoral ball lower tray 15, the bottom of rotary-tray 11 also is fixedly connected with the short stepped drive shaft of an end, short stepped drive shaft directly and yielding coupling 10 be fastenedly connected, carry out transmission of power, artificial hip joint analog operation platform module 9 drives the resultant motion that artificial hip joint produces flexing and the sideshake of similar human hip.The present embodiment experimental provision is used for the artificial hip joint simulation experiment, can true and reliable reproduction artificial hip joint situation in actual applications.
Referring to Fig. 3, in the present embodiment, testing machine workbench transmission module 2 comprises underframe platform 23, eccentric rotating disk 28, variable speed electric motors, particularly 36 and bent axle, all cranks are all combined by the first half 34 and the latter half 30, eccentric rotating disk 28 is positioned at the top of underframe platform 23, underframe platform 23 is fixed on the board framework 1, the bottom of underframe platform 23 is fixedly connected with installation by electric machine support 22 with the outside rack section of variable speed electric motors, particularly 36, the transmission main shaft of variable speed electric motors, particularly 36 is fixedly connected with by the bottom of shaft coupling 27 with lower minister's crank 25, controller is also controlled variable speed electric motors, particularly 36 to eccentric rotating disk 28 transferring power, make the first half 34 of lower minister's crank 25 be rotationally connected and locate with eccentric rotating disk 28 by angular contact ball bearing 24, the latter half 30 of lower minister's crank 25 also is rotationally connected and locates by the lower crank dead eye 35 of other angular contact ball bearing 24 with underframe platform 23, also be provided with a short crank 32 in bottom in order to location eccentricity rotating disk 28, the short crank 32 in bottom also is rotationally connected and locates with underframe platform 23 and eccentric rotating disk 28 respectively by angular contact ball bearing 24, also be provided with 3 top crank bearing oil slingers 33 on the eccentric rotating disk, by deep groove ball bearing 29 top, location crank 31 is installed in the top crank bearing oil slinger 33, be equipped with bearing (ball) cover 26 constraint bearings on the end face of lower crank dead eye 35 and top crank bearing oil slinger 33 and move axially, the first half 34 of top crank 31 is fixedly connected with yielding coupling 10.
In the present embodiment, testing machine workbench transmission module 2 is a planar linkage actuating device, is made of eccentric rotating disk 28 and built-up crank; Testing machine workbench transmission module 2 is fixed on board framework 1 bottom by underframe platform 23, eccentric rotating disk 28 is provided with crank hole, fix with the outer ring of bearing in the crank hole, plug-in mounting built-up crank in the bearing, crank is connected to the bearing on the underframe platform 23, this bearing is in order to fixing eccentric rotating disk 28, and the crank shaft connects shaft coupling 27 and is connected with variable speed electric motors, particularly 36; Testing machine workbench transmission module 2 with the structure that artificial hip joint analog operation platform module 9 is connected is: in 3 holes deep groove ball bearing 29 is housed on the eccentric rotating disk 28, deep groove ball bearing 29 interpolations are loaded onto section's crank 31, crank 31 upper ends in top are provided with yielding coupling 10, yielding coupling 10 with rotary-tray 11 be fixedly connected with.The resultant motion mode is simple, and the simple less abrasive particle of meeting generation that moves back and forth helps to analyze the motion of comparison artificial hip joint and abrasive particle is big or small, the mutual relation of quantity.
Referring to Fig. 4, in the present embodiment, testing machine workbench loads module 6 comprises dynamo-electric loader 43, load axle 42, universal type shaft coupling 39 and cup mortar retainer 37, load axle 42 and also comprise 3, linear bearing guide pin bushing 5 is fixedly connected on the board framework 1, loading axle 42 endwisely slips in linear bearing guide pin bushing 5, dynamo-electric loader 43 also is fixed on the board framework 1, the external stability link 38 of cup mortar retainer 37 is fixedly connected with universal type shaft coupling 39 1 ends, artificial hip joint ball mortar 7 is installed in glass mortar retainer 37, controller is also controlled dynamo-electric loader 43 by loading axle 42 imposed loads, the load that loading axle 42 applies dynamo-electric loader 43 by universal type shaft coupling 39 again is delivered to a glass mortar retainer 37, artificial hip joint is acted under the imposed load, between loading axle 42 and universal type shaft coupling 39, also be provided with load transducer 41, the top of load transducer 41 is fixedly connected with the bottom that loads axle 42, the bottom of load transducer 41 is fixedly connected with the top of universal type shaft coupling 39 by a threaded pin 40, and the signal output part of load transducer 41 is connected with the signal input part of controller.In the present embodiment, cup mortar retainer 37 and femoral ball top tray 19 form the artificial hip joint cup mortar anchor clamps of short cylinder shaped, load axle 42 and universal type shaft coupling 39 and form loading top compression leg, testing machine workbench loads module 6 is the combination charger with load transducer 41.
The operation principle of the present embodiment is as follows:
Referring to Fig. 1～Fig. 4, in testing machine workbench transmission module 2, variable speed electric motors, particularly 36 drives eccentric rotating disk 28 and produces eccentric circumferentially rotation, rotary-tray 10 and inclined-plane support supporting piece 13 are circumferentially rotated on 3 the moving worker's hip joint of top crank 31 Timing Belts analog operation platform modules 9 on the eccentric rotating disk 28, owing to supporting supporting piece 13, the inclined-plane is connected by crossed roller bearing 14 with femoral ball lower tray 15 simultaneously, increased between the two in relative rotation degree of freedom, thereby in perpendicular to the scope of rotational plane, produce the swing flexing that is similar to human hip with femoral ball top tray 19 and the artificial femur ball 8 that is fixed thereon, and the amplitude size depends on that the inclined-plane supports the size of the angle of gradient of supporting piece 13, artificial hip joint ball mortar 7 is installed in glass mortar retainer 37, be fixed with artificial femur ball 8 and be connected, experiment is mainly adjusted by the size of adjusting artificial femur tumbler bearing 18 with the artificial hip joint mechanism that artificial hip joint ball mortar 7 consists of with artificial femoral ball 8, testing machine workbench loads module 6 is mainly used in applying of dynamic variable force load, the load that changes by dynamo-electric loader 43, be applied to artificial femur ball 8 and artificial hip joint ball mortar 7, thereby carry out wear testing assessment fretting wear situation.
Embodiment two:
The technical scheme of the present embodiment and embodiment one is basic identical, and special feature is:
Referring to Fig. 5 and Fig. 6, be threaded connection installation brake bar 12 in the side of femoral ball lower tray 15, brake bar 12 is along with femoral ball lower tray 15 is rotated, when the free end of brake bar 12 is resisted against on the column lever of board framework 1, carry out spacing to femoral ball lower tray 15 because of the rotation that the rubbing action that is subjected between artificial hip joint ball mortar 7 and the artificial femur ball 8 produces.
The above is illustrated the embodiment of the invention by reference to the accompanying drawings, but the invention is not restricted to above-described embodiment, can also make multiple variation according to the purpose of innovation and creation of the present invention.All according to technical solution of the present invention spirit and principle under make change, modification, substitute, combination, simplify; all should be the substitute mode of equivalence; as long as goal of the invention according to the invention; only otherwise deviate from know-why and the inventive concept of many workbench of the present invention artificial hip joint abrasion detection experimental provision, all belong to protection scope of the present invention.
Claims (9)
1. the abrasion detection of workbench artificial hip joint more than kind experimental provision, comprise board framework (1), artificial hip joint driving device and controller, described artificial hip joint driving device is fixed on the described board framework (1), artificial hip joint consists of kinematic pair by artificial hip joint ball mortar (7) and the artificial femur ball (8) that mutual sphere cooperates, described controller is controlled described artificial hip joint driving device to described artificial hip joint ball mortar (7) and described artificial femur ball (8) difference output drive strength, it is characterized in that: the motion combination mechanism that described artificial hip joint driving device is artificial hip joint, comprise artificial hip joint analog operation platform module (9), testing machine workbench transmission module (2) and testing machine workbench loads module (6), artificial hip joint is arranged between described artificial hip joint analog operation platform module (9) and the described testing machine workbench loads module (6), described artificial hip joint analog operation platform (9) comprises two groups at least, corresponding with each artificial hip joint respectively, each is organized described artificial hip joint analog operation platform (9) module and all is fixed on the described board framework (1) by thrust ball bearing (4) and angular contact ball bearing (3) combination, axial and radial motion to described artificial hip joint analog operation platform (9) when artificial hip joint moves positions, each end that is transmitted of organizing the bottom of described artificial hip joint analog operation platform (9) also is connected with described testing machine workbench transmission module (2) clutch end by yielding coupling (10) respectively, described controller is controlled described testing machine workbench transmission module (2) and is driven described artificial hip joint analog operation platform (9) rotation, and then drive described artificial femur ball (8) and rotate, described testing machine workbench loads module (6) is arranged at the top of described board framework (1), described testing machine workbench loads module (6) also comprises two groups at least, corresponding with each artificial hip joint respectively, described controller is also controlled described testing machine workbench loads module (6) described artificial hip joint ball mortar (7) is axially loaded, the horizontal flat frame of top layer at described board framework (1) is fixedly installed linear bearing guide pin bushing (5), described linear bearing guide pin bushing (5) is located the radial motion of described testing machine workbench loads module (6), and limits the stroke of the axially-movable of described testing machine workbench loads module (6).
2. many workbench artificial hip joint abrasion detection experimental provision according to claim 1, it is characterized in that: described artificial hip joint analog operation platform module (9) comprises femoral ball top tray (19), femoral ball lower tray (15), rotary-tray (11) and inclined-plane support supporting piece (13), described femoral ball top tray (19) connects by bolted with described femoral ball lower tray (15), artificial hip joint is arranged in the reservoir for lubricant (17), carry out the close-fitting sealing between described reservoir for lubricant (17) and the described femoral ball top tray (19) fixing, center in described femoral ball top tray (19) is fixedly connected with by the bottom of conical surface blind hole with artificial femur tumbler bearing (18), the top of described artificial femur tumbler bearing (18) is fixedly connected with described artificial femur ball (8), the bottom of described rotary-tray (11) is fixedly connected with the top that described inclined-plane supports supporting piece (13), the upper surface inclined-plane that described inclined-plane supports supporting piece (13) connects with fixing by crossed roller bearing (14) and crossed roller bearing axle sleeve (21) with described femoral ball lower tray (15), described crossed roller bearing axle sleeve (21) makes the fixing end cap (16) of inner ring that is joined with bolts described crossed roller bearing (14), the outer ring of described crossed roller bearing (14) fixedly end cap (20) makes and is joined with bolts described femoral ball lower tray (15), the bottom of described rotary-tray (11) also is fixedly connected with the short stepped drive shaft of an end, described short stepped drive shaft directly is fastenedly connected with described yielding coupling (10), carry out transmission of power, described artificial hip joint analog operation platform module (9) drives the resultant motion that artificial hip joint produces flexing and the sideshake of similar human hip.
3. many workbench artificial hip joint abrasion detection experimental provision according to claim 2, it is characterized in that: described testing machine workbench transmission module (2) comprises underframe platform (23), eccentric rotating disk (28), variable speed electric motors, particularly (36) and bent axle, all cranks are all combined by the first half (34) and the latter half (30), described eccentric rotating disk (28) is positioned at the top of described underframe platform (23), described underframe platform (23) is fixed on the described board framework (1), the bottom of described underframe platform (23) is fixedly connected with installation by electric machine support (22) with the outside rack section of variable speed electric motors, particularly (36), the transmission main shaft of described variable speed electric motors, particularly (36) is fixedly connected with by the bottom of shaft coupling (27) with lower minister's crank (25), described controller is also controlled described variable speed electric motors, particularly (36) to described eccentric rotating disk (28) transferring power, make the first half (34) of described lower minister's crank (25) and eccentric rotating disk (28) be rotationally connected and locate by angular contact ball bearing (24), the latter half (30) of described lower minister's crank (25) also is rotationally connected and locates by the lower crank dead eye (35) of other described angular contact ball bearing (24) with described underframe platform (23), also be provided with a short crank in bottom (32) in order to locate described eccentric rotating disk (28), the short crank in described bottom (32) also is rotationally connected and locates with described underframe platform (23) and described eccentric rotating disk (28) respectively by angular contact ball bearing (24), at least also be provided with two top crank bearing oil slingers (33) on the described eccentric rotating disk, by deep groove ball bearing (29) location top crank (31) is installed in the described top crank bearing oil slinger (33), be equipped with bearing (ball) cover (26) constraint bearing on the end face of described lower crank dead eye (35) and top crank bearing oil slinger (33) and move axially, the first half (34) of described top crank (31) is fixedly connected with described yielding coupling (10).
4. according to claim 2 or 3 described many workbench artificial hip joint abrasion detection experimental provisions, it is characterized in that: described testing machine workbench loads module (6) comprises dynamo-electric loader (43), load axle (42), universal type shaft coupling (39) and cup mortar retainer (37), described loading axle (42) also comprises two at least, described linear bearing guide pin bushing (5) is fixedly connected on the board framework (1), described loading axle (42) endwisely slips in described linear bearing guide pin bushing (5), described dynamo-electric loader (43) also is fixed on the described board framework (1), the external stability link (38) of described cup mortar retainer (37) is fixedly connected with described universal type shaft coupling (39) one ends, described artificial hip joint ball mortar (7) is installed in the described cup mortar retainer (37), described controller is also controlled described dynamo-electric loader (43) by loading axle (42) imposed load, cup mortar retainer (37) under the load that described loading axle (42) applies described dynamo-electric loader (43) by universal type shaft coupling (39) again is delivered to, artificial hip joint is acted under the imposed load, between loading axle (42) and universal type shaft coupling (39), also be provided with load transducer (41), the top of described load transducer (41) is fixedly connected with the bottom of described loading axle (42), the bottom of described load transducer (41) is fixedly connected with by the top of a threaded pin (40) with universal type shaft coupling (39), and the signal output part of described load transducer (41) is connected with the signal input part of described controller.
5. according to claim 2 or 3 described many workbench artificial hip joint abrasion detection experimental provisions, it is characterized in that: be threaded connection in the side of described femoral ball lower tray (15) brake bar (12) is installed, described brake bar (12) is along with described femoral ball lower tray (15) is rotated, when the free end of described brake bar (12) is resisted against on the column lever of described board framework (1), carry out spacing to femoral ball lower tray (15) because of the rotation that the rubbing action that is subjected between artificial hip joint ball mortar (7) and the artificial femur ball (8) produces.
6. according to claim 2 or 3 described many workbench artificial hip joint abrasion detection experimental provisions, it is characterized in that: described artificial hip joint analog operation platform (9) comprises 3 groups, and top crank (31) comprises 3 simultaneously.
7. many workbench artificial hip joint abrasion detection experimental provision according to claim 4, it is characterized in that: described artificial hip joint analog operation platform (9) comprises 3 groups, top crank (31) comprises 3 simultaneously.
8. it is characterized in that according to claim 2 or 3 described many workbench artificial hip joint abrasion detection experimental provisions: the angle of gradient that described inclined-plane supports supporting piece (13) is 20 °～30 ° angles.
9. many workbench artificial hip joint abrasion detection experimental provision according to claim 4 is characterized in that: the angle of gradient that described inclined-plane supports supporting piece (13) is 20 °～30 ° angles.
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| CN103760006A (en) * | 2014-01-02 | 2014-04-30 | 上海大学 | Artificial hip joint fatigue testing device |
| CN103908360A (en) * | 2014-03-28 | 2014-07-09 | 浙江海圣医疗器械有限公司 | Alumina ceramic femoral head proof test device and using method |
| CN104297091A (en) * | 2014-10-23 | 2015-01-21 | 桂林电子科技大学 | Novel artificial hip joint friction testing machine |
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