CN102319131A - Abrasion test device for tibiofemoral joint of bi-dimensional rotating and bi-dimensional movement synthesized knee replacement prosthesis - Google Patents
Abrasion test device for tibiofemoral joint of bi-dimensional rotating and bi-dimensional movement synthesized knee replacement prosthesis Download PDFInfo
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- CN102319131A CN102319131A CN201110280167A CN201110280167A CN102319131A CN 102319131 A CN102319131 A CN 102319131A CN 201110280167 A CN201110280167 A CN 201110280167A CN 201110280167 A CN201110280167 A CN 201110280167A CN 102319131 A CN102319131 A CN 102319131A
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Abstract
The invention provides an abrasion test device for a tibiofemoral joint of a bi-dimensional rotating and bi-dimensional movement synthesized knee replacement prosthesis, which consists of a right part and a left part, wherein the right part is arranged at the right side of the test device and is a drive structure used in the bending and stretching movement of the prosthesis joint; the left part is arranged at the left side of the test device and produces the bending and stretching abrasion movement between the side of the prosthesis joint; and a rocker rod in a four-rod mechanism of the right part is connected with a main shaft in a thigh bone system of the left part. The invention meets the standard requirements of iso14243, the abrasion test of a shank bone prosthesis and a thigh bone prosthesis tries to be conducted in an environment which is similar to the biologic environment of the replacement prosthesis in the human body, the abrasion process approaches the real abrasion condition of the knee prosthesis, and the abrasion property and the abrasion prediction are more accurate. Meanwhile, the test deice has a bigger active control freedom of degree and strong adjustability. The inertia force loading mode enables the structure to be more simple and compact. The invention has higher practicable value and broad application prospects in the technical fields of knee joint prosthesis manufacture and medical instruments.
Description
(1) technical field
The present invention relates to a kind of testing machine that detects the knee-joint prosthesis wearing character.Relating in particular to a kind of two changes the synthetic knee replacement prosthese shin femoral joint abrasion tester of two shifting movements, belongs to knee-joint prosthesis manufacturing and technical field of medical instruments.
(2) background technology:
The knee cartilage that aging produces damages, heavy traffic and vehicle accident and extreme sport damage etc. cause the sick rate of knee prosthesis to rise rapidly in addition; Simultaneously; The disposable implantation requirement of human synovial makes the polishing machine of knee joint replacement prosthesis become the key issue in the articular prosthesis manufacturing.Yet in the knee-joint prosthesis manufacturing industry, still immature and perfect abroad to the technology and the equipment of the wear testing of articular prosthesis, domestic ability is at the early-stage.This is incompatible with the joint replacement surgery demand that increases day by day; Simultaneously, the polishing machine of knee-joint prosthesis has become the key index of the interior prosthese of knee joint in the body constitution amount, and shown by clinical follow up results: the inadaptation that knee joint replacement prosthesis reflects after 10 years at knee joint, except that prosthetic loosening, wear out failure also is its main cause.Therefore, the wearability and the life forecast of displacement knee-joint prosthesis just become the very important problem in the prosthese manufacturing industry.The present invention is according to the partial data requirement among the international standard iso14243-1,2,3, designed a kind ofly based on the synthetic knee-joint prosthesis abrasion tester of motion, is mainly used in the wear testing and the biometry of articular prosthesis.Simultaneously, also technology and equipment are provided for the abrasion analysis of replacement prosthesis.
(3) summary of the invention:
1, purpose: the purpose of this invention is to provide " the synthetic knee replacement prosthese shin femoral joint abrasion tester of a kind of two commentaries on classics, two shifting movements "; It is that flexion and extension characteristic according to human body knee joint shin femoral joint designs the knee joint replacement prosthesis abrasion tester; Testing the prosthesis wear polishing scratch that satisfies the requirement of wearing and tearing number of times on the basis near human body knee joint biotic environment (biological lubricating fluid reaches the loading to wear process) as far as possible; Thereby obtain the wearing character and the biometry of replacement prosthesis; Simultaneously, also technical data and method are provided for the prosthesis wear analysis.
2, technical scheme: see Fig. 1; The present invention a kind of two changes the synthetic knee replacement prosthese shin femoral joint abrasion tester of two shifting movements; It is made up of right members and left part spare two parts; Position annexation between them is: right members is the Drive Structure in the prosthetic joint flexion and extension on this testing machine right side; Left part spare is that the wearing and tearing of bending and stretching that produce between the prosthetic joint face are moved in this testing machine left side; Main shaft in rocking bar in the right members in the four-bar mechanism and the left part spare in the femur system is connected.
Said right members comprises motor part and four-bar mechanism, and relation between the two is: the adjustable crank in the four-bar mechanism is connected on the electric machine main shaft of motor part; Motor in this motor part is fixed on the motor base by cruciform slot screw, and the motor afterbody is held up by the motor back-up block, and the motor back-up block is placed in the groove of motor base, and motor base is through being bolted on the pedestal; Electric machine main shaft is connected through the adjustable crank in key connection and the four-bar mechanism, is locked by check ring.This motor is a footing mount type gear reduction threephase asynchronous, rated power 0.75kW, output speed 61rpm, nominal torque 81Nm; This motor base is the metal rack structure of being processed by section bar.See Fig. 4 b; This four-bar mechanism is made up of adjustable crank, connecting rod, rocking bar, back link axle, rear axle end-stopping plate, deep groove ball bearing, pitman shaft sleeve, front rod axle, front axle end-stopping plate and locking nut; Position annexation between them is: the front rod axle passes the straight trough mouth of adjustable crank and the through hole of connecting rod one end; Guarantee that by a pair of deep groove ball bearing it relatively rotates, deep groove ball bearing is spacing by the pitman shaft sleeve, and axle head compresses the front axle end-stopping plate by locking nut; The back link axle passes the through hole of the connecting rod other end and the through hole of rocking bar afterbody, also is to guarantee that by a pair of deep groove ball bearing it relatively rotates, and deep groove ball bearing is spacing by the pitman shaft sleeve, and the rear axle end-stopping plate is fixed on the side of connecting rod through cruciform slot screw; This adjustable crank is to constitute by two large and small cylindric, and the center is provided with through hole, is used to connect electric machine main shaft, and the 60mm place is provided with the straight trough mouth to the great circle cylindrical member apart from the center, is used for fixing with connecting rod and being connected, and has simultaneously apart from adjustability; This connecting rod two is the cylinder rod member, and the middle part links to each other through rectangular cross section spare; This rocking bar is the circular arc part, and it is provided with two through holes, and the afterbody hole is used for being connected with connecting rod, and centre bore is used for connecting the main shaft of femur system.This back link axle is that core is that circular shaft, head are discoid conjunction; This rear axle end-stopping plate is discoid; This deep groove ball bearing is commercial standard component; This pitman shaft sleeve is a cylindrical part, and quantity is two; This front rod axle is that core is that circular shaft, head are discoid conjunction; This front axle end-stopping plate is discoid; This locking nut is commercial standard component.
Said left part spare; Comprise pedestal, Rodless cylinder, connecting plate, pneumaticly set a table, connect platform, turntable, support bar, tibia system and femur system and form, see Fig. 1, support bar is connected on the base plate pedestal; Rodless cylinder is placed on above the pedestal; Place connecting plate on it more respectively, pneumaticly set a table, connect platform and turntable, the tibia system is placed on above the turntable, connects by respective threads between any two; The femur system is fixed in the support bar through its main shaft.This pedestal is the rectangle plate; This Rodless cylinder is the MY1M40-G-15-C-S-Z73 that SMC company produces, the maximum moment 59Nm that allows of vertical direction, and the maximum load 840N that allows is by the displacement of Rodless cylinder control knee-joint prosthesis on M/L (inside/outside) direction; This connecting plate is the rectangle plate, and its function is for connecting Rodless cylinder and pneumatic setting a table; This pneumatic setting a table is the MSQA70-A93 that SMC company produces, the angle of pneumatic control knee-joint prosthesis I/E (inside/outside) rotation of setting a table, effectively output torque 6.79Nm; This connection platform is a cylindrical structural, and its function is for connecting pneumatic setting a table and turntable; This turntable is disk and frustum of a cone conjunction; This support bar is that head is provided with round-meshed metal structure bracing frame, and is provided with the reinforcement gusset at side plate.See Fig. 3, this tibia system is made up of dovetail groove guide rail, dovetail groove slide block, tibial plateau pot, clamping clip, thin nut, sealing ring, and relation is that the dovetail groove guide rail is connected on the turntable by screw therebetween; The dovetail groove slide block is installed in the dovetail groove guide rail; Adjust the pretightning force between the two through holding screw and panel, the tibial plateau pot is connected on the dovetail groove slide block through screw, and clamping clip inserts and clamp tibial prosthesis from pot body side surface adjustable port; Locked with double nut, sealing ring seals; This dovetail groove guide rail is the dove-tail guide rail by standard design; This dovetail groove slide block is the dove-tail slide block by standard design; This tibial plateau pot is the round pot shape shape, is provided with groove in the pot, is used for placing and the coarse positioning tibial prosthesis, and its inwall has designed elliptic arc fitting surface and tibial prosthesis side cooperation carrying out fine positioning; This clamping clip is the screwed hardware of pommel, and work surface is the plane; This thin nut is commercial standard component; The sealing circle is the commercial standard component of ring-type.See Fig. 2; This femur system is made up of key, taper roll bearing, round nut, stop washer, the left and right sleeve of main shaft, retaining ring for shaft shoulder, studs, nut, adjustment pad, hexagon-headed bolt in femoral prosthesis, femoral prosthesis voussoir, v shape load beam, main shaft, connecting rod, main shaft side switch, the main shaft; Main shaft passes through hole and the through hole of femoral prosthesis voussoir on the connecting rod; Connecting rod is connected through two groups of hexagon-headed bolts and v shape load beam, and femoral prosthesis and femoral prosthesis voussoir cooperate solid for behind-the body through slight interference, and the reuse stud bolt an nut is cemented in it on load beam; Can add its relative position of adjustment pad adjustment; The through hole on the support bar is passed at the main shaft two ends, guarantees that by taper roll bearing it relatively rotates, and is undertaken spacing by retaining ring for shaft shoulder and the left and right sleeve of main shaft; And it is locked to add stop washer by round nut, and main shaft is connected by key with fork, connecting rod, femoral prosthesis voussoir.This femoral prosthesis is a backstop stable type prosthese; This femoral prosthesis voussoir is a wood materials, with femoral prosthesis be interference fit; This load beam is the rectangle plate that has approximate V-type on one side; This main shaft is common step axle; This connecting rod is the rectangular metal structural connection; Key, taper roll bearing, round nut and stop washer are the standard components of choosing on demand in this main shaft side switch, the main shaft; The left and right sleeve of this main shaft is that heart portion is provided with round-meshed cylindrical member; This retaining ring for shaft shoulder, studs, nut and hexagon-headed bolt are the standard components of choosing on demand; This adjustment pad is laminar annular metalwork, is used to guarantee that femoral prosthesis and tibial plateau are impaction state.
Wherein, the model of this motor is YCJ-120-170;
Wherein, the overall dimensions of this pedestal is 1400 * 700 * 50;
Wherein, the specifications and models of this deep groove ball bearing are: internal diameter 7mm, bearing symbol 627, four of quantity;
Wherein, the specifications and models of this taper roll bearing are: internal diameter 25mm, bearing symbol 30205, two of quantity.
The structural principle of tibia system is: by the displacement of Rodless cylinder control knee-joint prosthesis on the M/L direction of bottommost; The displacement span of control is ± 7.5mm; Rodless cylinder is connected with bolt through connecting plate with the cylinder of setting a table, and the cylinder of setting a table is then controlled the angle of knee-joint prosthesis I/E rotation, according to iso standard; Its anglec of rotation is-2-6 °, and turning moment is the 0.6Nm/ degree; The servo-actuated of dovetail groove guide rail constraint knee-joint prosthesis on the A/P direction, the displacement span of control is ± 5mm; The inwall of tibial plateau pot has designed the elliptic arc fitting surface and the tibial prosthesis side cooperates to confirm the installation site of tibial plateau, and adopts voussoir and double nut to be fixedly clamped.Fill the lubricating fluid of tissue characteristics in the pot, flood tibial plateau, make the wear test environment as far as possible near the knee joint biotic environment near human synovial liquid.The femur system is used to realize the flexion and extension of femoral prosthesis, is mainly to bend and stretch to drive and the abrasion cycles loading structure.Femoral prosthesis cooperates through slight interference with the prosthese voussoir and is solidified as a whole; The prosthese voussoir is cemented on the V-type load beam with bolt; The load beam forms gantry structure through the both sides side plate, and prosthese voussoir and load beam are fixed on one through the connecting plate of both sides, gantry with bolt, and two side connecting plates all link to each other with main shaft; Main shaft is connected in the voussoir that passes femoral prosthesis through key, and is installed on the support bracket fastened biside plate; Fixed support is made up of base and biside plate, for strengthening rigidity, the reinforcement gusset is set on side plate; The main shaft left side is connected with the rocking bar of crank and rocker mechanism.When motor-driven crank rocker circulation swing, make spindle swing through rocking bar, drive the load beam swing of whole gantry by main shaft, thus, realized the flexion and extension and the CYCLIC LOADING of femoral prosthesis.The scope of bending and stretching is ± 30 °, and maximum is bent and stretched scope and is ± 60 °, and frequency is 1 ± 0.1Hz.The wear testing cycle-index is 5,000,000 times, promptly 5 * 10
6Inferior, test temperature is 37 ℃ ± 3 ℃.
Advantage and effect: the present invention a kind of two changes the synthetic knee replacement prosthese shin femoral joint abrasion tester of two shifting movements; Satisfy the standard-required of iso14243; Carry out the wear testing of tibia/femoral prosthesis at the biotic environment of body near replacement prosthesis as far as possible; Wear process more makes wearing character and wearing and tearing prediction comparatively accurate near the actual wear situation at knee prostheses; Simultaneously, the degree of freedom of this testing machine ACTIVE CONTROL is more, and controllability is strong; The load mode of inertia force is more simplified with compact structure in addition.
(4) description of drawings:
Fig. 1. the present invention a kind of two changes the synthetic knee replacement prosthese shin femoral joint abrasion tester structural representation of two shifting movements;
Fig. 2. gantry of the present invention control feel simulator sketch map;
Fig. 3. tibia system motion structural scheme of mechanism of the present invention;
Fig. 4 a. crank rocker driving mechanism of the present invention sketch map;
Fig. 4 b. crank rocker driving mechanism of the present invention explosive view;
Fig. 5. panel sketch map of the present invention;
Fig. 6. adjustment pad sketch map of the present invention.
Label declaration is following among the figure:
1, pedestal; 2, the fixing hexagon-headed bolt M14X90-C of cylinder; 3, Rodless cylinder; 4, connecting plate; 5, hexagon socket head cap screw M8X20-C; 6, hexagon-headed bolt M10X50-C; 7, pneumatic setting a table; 8, connect platform; 9, soket head cap screw M8X20-20-C; 10, hexagon-headed bolt M10X20-C; 11, turntable; 12, dovetail groove guide rail; 13, dovetail groove slide block; 14, holding screw M5X12-C; 15, panel; 16, tibial plateau pot; 17, Cross Recess Head Screw M8X16-16-C; 18, clamping clip; 19, sealing ring; 20, clamping clip packing ring; 21, thin nut M5-C; 22, support bar; 23, hexagon-headed bolt M12X30-C; 24, packing ring 12; 25, main shaft; 26, round nut M20X1.5-C; 27, stop washer; 28, the right sleeve of main shaft; 29, taper roll bearing; 30, retaining ring for shaft shoulder; 31, main shaft side switch; 32, main shaft left sleeve; 33, key in the main shaft; 34, femoral prosthesis voussoir; 35, nut M10-C; 36, studs M10X40-C; 37, adjustment pad; 38, connecting rod; 39, V-arrangement load beam; 40, hexagon-headed bolt M20X80-C; 41, hexagon-headed bolt M20X60-C; 42, rocking bar; 43, back link axle; 44, deep groove ball bearing; 45, pitman shaft sleeve; 46, rear axle end-stopping plate; 47, cruciform slot screw M3X8-6.35; 48, connecting rod; 49, adjustable crank; 50, front rod axle; 51, front axle end-stopping plate; 52, locking nut M6-C; 53, check ring; 54, motor; 55, hexagon socket head cap screw M12X25-C; 56, motor back-up block; 57, motor base; 58, hexagon-headed bolt M20X55-C; 59, hexagon socket cap head screw M4X16-C.
(5) specific embodiment:
Further set forth technical scheme of the present invention in conjunction with accompanying drawing:
See Fig. 1; The present invention a kind of two changes the synthetic knee replacement prosthese shin femoral joint abrasion tester of two shifting movements; It is made up of right members and left part spare two parts; Position annexation between them is: left part spare is in this testing machine left side, and right members is on this testing machine right side, and the main shaft in the rocking bar in the right members in the crank and rocker mechanism and the left part spare in the femur system is connected.
The wearing and tearing of bending and stretching that left part spare produces between the prosthetic joint face are moved, and right members is the Drive Structure in the prosthetic joint flexion and extension.
The technical scheme of left part spare and principle:
Left part spare mainly comprises main shaft 25; Femoral prosthesis voussoir 34; V shape load beam 39, support bar 22, is pneumaticly set a table 7, Rodless cylinder 3, connecting plate 4, is connected platform 8 and pedestal 1 is formed at tibial plateau pot 16, clamping clip 18, dovetail groove guide rail 12, dovetail groove slide block 13.The left part spare that makes progress the end of from is divided into tibia/femur system again, and two systems come together in the prosthese contact surface, according to the displacement tibia/femur in the knee joint requirement, femoral prosthesis is installed in the intercondylar fossa of tibia polyethylene liner, should have the suitable gap of going down on one's knees of stretching.
The tibia system is as shown in Figure 3; Tibial prosthesis is fixed in the tibial plateau pot 16; Cooperate with the tibial prosthesis side through tibial plateau pot 16 inboard elliptic arcs and to locate; Insert clamping clip 18 from pot body side surface adjustable port and clamp tibial prosthesis, and grip clencher 18 fully with thin nut M5-C 21 and connect fixingly, thin nut M5-C 21 bottoms are lined with clamping clip packing ring 20 and sealing ring 19; With water, syntholube or joint fluid is that lubricant is lubricated wear test, or carries out wear test with the dry contact condition.Tibial plateau pot 16 is connected through the dovetail groove slide block 13 usefulness Cross Recess Head Screw M8X16-16-C 17 of bottom through-hole and below; Dovetail groove slide block 13 is installed in the dovetail groove guide rail 12, through the pretightning force of holding screw M5X12-C 14 and panel 15 adjustment between the two.Dovetail groove guide rail 12 guarantees the displacement of knee-joint prosthesis on A/P (preceding/back) direction.Dovetail groove guide rail 12 is fixed on the turntable 11 of below through hexagon socket cap head screw M4X16-C 59; Turntable 11 and its below pneumatic set a table and 7 adopts soket head cap screw M8X20-20-C 9 and hexagon-headed bolt M10X20-C10 to be fixed together through being connected platform 8, and pneumatic 7 parts that drive on it of setting a table are done gyration, and the I/E that controls knee-joint prosthesis rotatablely moves; According to iso standard; With the flexion and extension of femoral prosthesis, to control its anglec of rotation and be-2-6 °, turning moment is 0.6Nm.Pneumatic setting a table 7 also is fixed together through connecting plate 4 usefulness hexagon socket head cap screw M8X20-C 5 and hexagon-headed bolt M10X50-C 6 with the Rodless cylinder 3 of bottommost; Rodless cylinder 3 through cylinder fixedly hexagon-headed bolt M14X90-C 2 be connected on the pedestal 1; All parts were done translational motion above Rodless cylinder 3 drove it; The control displacement of knee-joint prosthesis on M/L (inside/outside) direction, with the flexion and extension of femoral prosthesis, the displacement of M/L is controlled at ± the 7.5mm scope in.
The femur system is as shown in Figure 2, and the femur system is made up of femoral prosthesis, femoral prosthesis voussoir 34, v shape load beam 39 and main shaft 25: femoral prosthesis and femoral prosthesis voussoir 34 are assemblied in one through slight interference, utilize the taper bolt location on the femoral prosthesis.Femoral prosthesis voussoir 34 has threaded coaxial hole with V-type load beam 39; The two is fixed through studs M10X40-C36 and nut M10-C35; V-type load beam 39 usefulness inertia force are pressed on femoral prosthesis on the tibial prosthesis polyethylene liner; Choose the about 400N of pressure, it approaches the pressure between the replacement prosthesis face in knee joint, adds adjustment pad 37 adjustment pretightning forces; Simultaneously, main shaft 25 passes femoral prosthesis voussoir 34, adopts key 33 connections in the main shaft, can reduce knee-joint prosthesis and bend and stretch the moment of flexure in the process.V-type load beam 39 constitutes gantry structure through hexagon-headed bolt M20X80-C 40 and hexagon-headed bolt M20X60-C 41 two lateral connector bars 38 that are connected; Connecting rod 38 is connected through main shaft side switch 31 with main shaft 25; Main shaft 25 both sides are installed on the support bar 22; Select for use taper roll bearing 29 to be connected with the assembling of support bar 22 for main shaft 25, support bar 22 is connected on the pedestal 1 through hexagon-headed bolt M12X30-C23 and packing ring 1224.Taper roll bearing 29 inner rings rely on retaining ring for shaft shoulder 30 location, and the outer ring relies on the left and right tube of cover main shaft 32,28 location, and main shaft 25 right sides connect rocking bar 42 through main shaft side switch 31, and it is locked that axle head all adopts stop washer 27 to add round nut M20X1.5-C 26.
The technical scheme of right members and principle:
Right members realizes that femur bends and stretches driving, mainly by motor 54, and motor base 57, adjustable crank 49, connecting rod 48, rocking bar 42 elements such as grade are formed.
The technical scheme of right members is as shown in Figure 4: adjustable crank 49; Connecting rod 48 and the adjustable crank and rocker mechanism of rocking bar 42 common formations; Rocking bar 42 is connected with main shaft 25, cooperates the drive connection that keeps its rocking bar 42 and main shaft 25 through taper roll bearing 29 and hole axle; Back link axle 43 passes the through hole of connecting rod 48 1 ends and the through hole of rocking bar 42 afterbodys; Both relatively rotate to cooperate maintenance through deep groove ball bearing 44 and hole axle; Deep groove ball bearing 44 is spacing by pitman shaft sleeve 45, and rear axle end-stopping plate 46 is fixed on the side of connecting rod 48 through cruciform slot screw M3X8-6.3547; Front rod axle 50 passes the straight trough mouth of adjustable crank 49 and the through hole of connecting rod 48 other ends; Both relatively rotate to cooperate maintenance through deep groove ball bearing 44 and hole axle; It is locked that axle head compresses front axle end-stopping plate 51 by locking nut M6-C 52, and adjustable crank 49 is connected on the main shaft of motor 54 through check ring 53.Crank and rocker mechanism is driven by motor 54, drives V-type load beam 39 and femoral prosthesis and does sine swing, realizes the flexion and extension between the prosthetic joint face, and the scope of bending and stretching is ± 30 °, and maximum is bent and stretched scope and is ± 60 °, and frequency is 1 ± 0.1Hz; Motor 54 is fixed on the motor base 57 by hexagon socket head cap screw M12X25-C 55; The motor afterbody is held up by motor back-up block 56; Motor back-up block 56 is placed in the groove of motor base 57, and motor base 57 is fixed on the pedestal 1 through hexagon-headed bolt M20X55-C 58.
Controllable parameter of the present invention has cycle-index 5,000,000 times, and promptly 5 * 10
6Inferior; Bend and stretch angle ± 30 °, maximum is bent and stretched angular range ± 60 °; Load 400N, range of accommodation is 0～1000N.Assess the frictional behavior of knee-joint prosthesis with record friction torque, tibial plateau friction area and the degree of wear.
Claims (2)
1. one kind two is changeed the synthetic knee replacement prosthese shin femoral joint abrasion tester of two shifting movements, and it is characterized in that: it is made up of right members and left part spare two parts, and right members is the Drive Structure in the prosthetic joint flexion and extension on this testing machine right side; Left part spare is that the wearing and tearing of bending and stretching that produce between the prosthetic joint face are moved in this testing machine left side; Main shaft in rocking bar in the right members in the four-bar mechanism and the left part spare in the femur system is connected;
Said right members comprises motor part and four-bar mechanism, and the adjustable crank in the four-bar mechanism is connected on the main shaft of motor part; Motor in this motor part is fixed on the motor base by cruciform slot screw, and the motor afterbody is held up by the motor back-up block, and the motor back-up block is placed in the groove of motor base, and motor base is through being bolted on the pedestal; Electric machine main shaft is connected through the adjustable crank in key connection and the four-bar mechanism, is locked by check ring; This motor is a YCJ-120-170 footing mount type gear reduction threephase asynchronous; This motor base is the metal rack structure of being processed by section bar; This four-bar mechanism is made up of adjustable crank, connecting rod, rocking bar, back link axle, rear axle end-stopping plate, deep groove ball bearing, pitman shaft sleeve, front rod axle, front axle end-stopping plate and locking nut; The front rod axle passes the straight trough mouth of adjustable crank and the through hole of connecting rod one end; Guarantee that by a pair of deep groove ball bearing it relatively rotates; Deep groove ball bearing is spacing by the pitman shaft sleeve, and axle head compresses the front axle end-stopping plate by locking nut; The back link axle passes the through hole of the connecting rod other end and the through hole of rocking bar afterbody, also is to guarantee that by a pair of deep groove ball bearing it relatively rotates, and deep groove ball bearing is spacing by the pitman shaft sleeve, and the rear axle end-stopping plate is fixed on the side of connecting rod through cruciform slot screw; This adjustable crank is to constitute by two large and small cylindric, and the center is provided with through hole, is used to connect electric machine main shaft, and the 60mm place is provided with the straight trough mouth to the great circle cylindrical member apart from the center, is used for fixing with connecting rod and being connected and having apart from adjustability; This connecting rod two is the cylinder rod member, and the middle part links to each other through rectangular cross section spare; This rocking bar is the circular arc part, and it is provided with two through holes, and the afterbody hole is used for being connected with connecting rod, and centre bore is used for connecting the main shaft of femur system; This back link axle is that core is that circular shaft, head are discoid conjunction; This rear axle end-stopping plate is discoid; This pitman shaft sleeve is a cylindrical part, and quantity is two; This front rod axle is that core is that circular shaft, head are discoid conjunction; This front axle end-stopping plate is discoid;
Said left part spare; Comprise pedestal, Rodless cylinder, connecting plate, pneumaticly set a table, connect platform, turntable, support bar, tibia system and femur system, support bar is connected on the base plate pedestal, and Rodless cylinder is placed on above the pedestal; Place connecting plate on it more respectively, pneumaticly set a table, connect platform and turntable; The tibia system is placed on above the turntable, connects by respective threads between any two, and the femur system is fixed in the support bar through its main shaft; This pedestal is the rectangle plate; This Rodless cylinder is the MY1M40-G-15-C-S-Z73 that SMC company produces, by the displacement of Rodless cylinder control knee-joint prosthesis on inside and outside direction; This connecting plate is the rectangle plate, and its function is for connecting Rodless cylinder and pneumatic setting a table; This pneumatic setting a table is the MSQA70-A93 that SMC company produces, the angle of the pneumatic inside and outside rotation of control knee-joint prosthesis of setting a table; This connection platform is a cylindrical structural, and its function is for connecting pneumatic setting a table and turntable; This turntable is disk and frustum of a cone conjunction; This support bar is that head is provided with round-meshed metal structure bracing frame, and is provided with the reinforcement gusset at side plate; This tibia system is made up of dovetail groove guide rail, dovetail groove slide block, tibial plateau pot, clamping clip, thin nut and sealing ring; Relation is that the dovetail groove guide rail is connected on the turntable by screw therebetween, and the dovetail groove slide block is installed in the dovetail groove guide rail, adjusts the pretightning force between the two through holding screw and panel; The tibial plateau pot is connected on the dovetail groove slide block through screw; Clamping clip inserts and the clamping tibial prosthesis from pot body side surface adjustable port, and locked with double nut, sealing ring seals; This dovetail groove guide rail is the dove-tail guide rail by standard design; This dovetail groove slide block is the dove-tail slide block by standard design; This tibial plateau pot is the round pot shape shape, is provided with groove in the pot, is used for placing and the coarse positioning tibial prosthesis, and its inwall has designed elliptic arc fitting surface and tibial prosthesis side cooperation carrying out fine positioning; This clamping clip is the screwed hardware of pommel, and work surface is the plane; This femur system is made up of key, taper roll bearing, round nut, stop washer, the left and right sleeve of main shaft, retaining ring for shaft shoulder, studs, nut, adjustment pad and hexagon-headed bolt in femoral prosthesis, femoral prosthesis voussoir, v shape load beam, main shaft, connecting rod, main shaft side switch, the main shaft; Main shaft passes through hole and the through hole of femoral prosthesis voussoir on the connecting rod; Connecting rod is connected through two groups of hexagon-headed bolts and v shape load beam; Femoral prosthesis and femoral prosthesis voussoir through slight interference cooperate be solidified as a whole after; The reuse stud bolt an nut is cemented in it on load beam, adds its relative position of adjustment pad adjustment, and the through hole on the support bar is passed at the main shaft two ends; Guarantee that by taper roll bearing it relatively rotates; Undertaken spacingly by retaining ring for shaft shoulder and the left and right sleeve of main shaft, and it is locked to add stop washer by round nut, and main shaft is connected by key with fork, connecting rod, femoral prosthesis voussoir; This femoral prosthesis is a backstop stable type prosthese; This femoral prosthesis voussoir is a wood materials, with femoral prosthesis be interference fit; This load beam is the rectangle plate that has approximate V-type on one side; This main shaft is common step axle; This connecting rod is the rectangular metal structural connection; The left and right sleeve of this main shaft is that heart portion is provided with round-meshed cylindrical member; This adjustment pad is laminar annular metalwork, is used to guarantee that femoral prosthesis and tibial plateau are impaction state.
2. according to claim 1 a kind of two change the synthetic knee replacement prosthese shin femoral joint abrasion tester of two shifting movements, and it is characterized in that: the overall dimensions of this pedestal is 1400 * 700 * 50.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110280167.4A CN102319131B (en) | 2011-09-20 | 2011-09-20 | Abrasion test device for tibiofemoral joint of bi-dimensional rotating and bi-dimensional movement synthesized knee replacement prosthesis |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110280167.4A CN102319131B (en) | 2011-09-20 | 2011-09-20 | Abrasion test device for tibiofemoral joint of bi-dimensional rotating and bi-dimensional movement synthesized knee replacement prosthesis |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102319131A true CN102319131A (en) | 2012-01-18 |
| CN102319131B CN102319131B (en) | 2014-03-19 |
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| CN201110280167.4A Expired - Fee Related CN102319131B (en) | 2011-09-20 | 2011-09-20 | Abrasion test device for tibiofemoral joint of bi-dimensional rotating and bi-dimensional movement synthesized knee replacement prosthesis |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102680344A (en) * | 2012-05-07 | 2012-09-19 | 北京航空航天大学 | Six-degree-of-freedom parallel and oscillating guide bar mechanism combined knee-replacing prosthesis abrasion tester |
| CN103315832A (en) * | 2013-07-11 | 2013-09-25 | 山东英才学院 | Artificial bone joint friction and abrasion test 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 |
| CN106448400A (en) * | 2016-10-12 | 2017-02-22 | 中南大学 | Human knee (cap) joint bone friction simulation test device |
| CN109249248A (en) * | 2018-10-30 | 2019-01-22 | 浙江剑锋机械有限公司 | The control method of the circular arc face processing equipment of compressor valve plate |
| CN110024752A (en) * | 2019-05-22 | 2019-07-19 | 吉林大学 | A kind of fixture for insect leg joint friction test |
| CN113465869A (en) * | 2021-08-20 | 2021-10-01 | 中国空气动力研究与发展中心高速空气动力研究所 | High-speed wind tunnel gust simulation device with two side blade grids |
| CN113465871A (en) * | 2021-08-20 | 2021-10-01 | 中国空气动力研究与发展中心高速空气动力研究所 | Parallel binary cascade high-speed wind tunnel gust simulation device |
| CN113465868A (en) * | 2021-08-20 | 2021-10-01 | 中国空气动力研究与发展中心高速空气动力研究所 | High-speed wind tunnel gust simulation device with two parallel blade grids on two sides |
| CN113465867A (en) * | 2021-08-20 | 2021-10-01 | 中国空气动力研究与发展中心高速空气动力研究所 | Single-side single-blade-grid high-speed wind tunnel gust simulation device |
| CN113465870A (en) * | 2021-08-20 | 2021-10-01 | 中国空气动力研究与发展中心高速空气动力研究所 | Single-side parallel blade grid high-speed wind tunnel gust simulation device |
| CN113567085A (en) * | 2021-08-20 | 2021-10-29 | 中国空气动力研究与发展中心高速空气动力研究所 | Binary cascade high-speed wind tunnel gust simulation device |
| CN114166677A (en) * | 2021-12-06 | 2022-03-11 | 安徽农业大学 | Two-axis artificial femoral head friction testing machine simulating human body environment |
| CN115844600A (en) * | 2023-01-17 | 2023-03-28 | 山东省医疗器械和药品包装检验研究院 | Device and method for measuring relative angular movement of knee joint prosthesis |
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Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102680344B (en) * | 2012-05-07 | 2014-03-12 | 北京航空航天大学 | Six-degree-of-freedom parallel and oscillating guide bar mechanism combined knee-replacing prosthesis abrasion tester |
| CN102680344A (en) * | 2012-05-07 | 2012-09-19 | 北京航空航天大学 | Six-degree-of-freedom parallel and oscillating guide bar mechanism combined knee-replacing prosthesis abrasion tester |
| CN103315832A (en) * | 2013-07-11 | 2013-09-25 | 山东英才学院 | Artificial bone joint friction and abrasion test device |
| CN103315832B (en) * | 2013-07-11 | 2015-04-01 | 山东英才学院 | Artificial bone joint friction and abrasion test 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 |
| CN106448400A (en) * | 2016-10-12 | 2017-02-22 | 中南大学 | Human knee (cap) joint bone friction simulation test device |
| CN109249248A (en) * | 2018-10-30 | 2019-01-22 | 浙江剑锋机械有限公司 | The control method of the circular arc face processing equipment of compressor valve plate |
| CN110024752B (en) * | 2019-05-22 | 2023-10-24 | 吉林大学 | Clamp for insect leg joint friction test |
| CN110024752A (en) * | 2019-05-22 | 2019-07-19 | 吉林大学 | A kind of fixture for insect leg joint friction test |
| CN113465869A (en) * | 2021-08-20 | 2021-10-01 | 中国空气动力研究与发展中心高速空气动力研究所 | High-speed wind tunnel gust simulation device with two side blade grids |
| CN113465868A (en) * | 2021-08-20 | 2021-10-01 | 中国空气动力研究与发展中心高速空气动力研究所 | High-speed wind tunnel gust simulation device with two parallel blade grids on two sides |
| CN113465867A (en) * | 2021-08-20 | 2021-10-01 | 中国空气动力研究与发展中心高速空气动力研究所 | Single-side single-blade-grid high-speed wind tunnel gust simulation device |
| CN113465870A (en) * | 2021-08-20 | 2021-10-01 | 中国空气动力研究与发展中心高速空气动力研究所 | Single-side parallel blade grid high-speed wind tunnel gust simulation device |
| CN113567085A (en) * | 2021-08-20 | 2021-10-29 | 中国空气动力研究与发展中心高速空气动力研究所 | Binary cascade high-speed wind tunnel gust simulation device |
| CN113465871A (en) * | 2021-08-20 | 2021-10-01 | 中国空气动力研究与发展中心高速空气动力研究所 | Parallel binary cascade high-speed wind tunnel gust simulation device |
| CN114166677A (en) * | 2021-12-06 | 2022-03-11 | 安徽农业大学 | Two-axis artificial femoral head friction testing machine simulating human body environment |
| CN115844600A (en) * | 2023-01-17 | 2023-03-28 | 山东省医疗器械和药品包装检验研究院 | Device and method for measuring relative angular movement of knee joint prosthesis |
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