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CN102793594B - A kind of artificial knee joint - Google Patents

A kind of artificial knee joint Download PDF

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Publication number
CN102793594B
CN102793594B CN201210294103.4A CN201210294103A CN102793594B CN 102793594 B CN102793594 B CN 102793594B CN 201210294103 A CN201210294103 A CN 201210294103A CN 102793594 B CN102793594 B CN 102793594B
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CN
China
Prior art keywords
joint
condyle
face
spacer
prosthesis
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN201210294103.4A
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Chinese (zh)
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CN102793594A (en
Inventor
尚鹏
白雪岭
卢俊哲
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Shenzhen Research Institute Tsinghua University
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Shenzhen Research Institute Tsinghua University
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Priority to CN201210294103.4A priority Critical patent/CN102793594B/en
Publication of CN102793594A publication Critical patent/CN102793594A/en
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Expired - Fee Related legal-status Critical Current
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Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F2/00Filters 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
    • A61F2/02Prostheses implantable into the body
    • A61F2/30Joints
    • A61F2/38Joints for elbows or knees
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F2/00Filters 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
    • A61F2/02Prostheses implantable into the body
    • A61F2/30Joints
    • A61F2002/30001Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof

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  • Health & Medical Sciences (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • Physical Education & Sports Medicine (AREA)
  • Cardiology (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Transplantation (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Vascular Medicine (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Prostheses (AREA)

Abstract

The present invention relates to a kind of artificial knee joint.It includes lateral femoral condyle prosthesis, tibial plateau prosthese, joint spacer, after assembling, lateral femoral condyle prosthesis is placed on the tibial prosthesis face of joint spacer by the activity of femoral joint face, and the projection in the middle part of described joint spacer puts in the square hole in the middle of lateral femoral condyle prosthesis to limit knee articulation degree and to prevent joint dislocation; The convex configuration activity of joint spacer is installed on the type groove of tibial plateau prosthese, and the dome configuration activity of joint spacer is installed on the described middle circular groove of tibial plateau prosthese.After adopting said structure, artificial knee joint of the present invention, solves east ethnic group knee-joint anatomy form and the existing artificial knee joint product that cause and east ethnic group knee-joint anatomy form unmatched technical problem not consistent with west ethnic group knee-joint anatomy form.Artificial knee joint of the present invention is applicable to the east ethnic group or the east ethnic group patient that need Total knee arthroplasty.

Description

A kind of artificial knee joint
Technical field
The present invention relates to artificial joint replacement device, refer in particular to a kind of artificial knee joint.
Background technology
Artificial joint replacement is comprising China's popularity, has been widely used in the disease for the treatment of shoulder joint, elbow joint, carpal joint, interphalangeal joint, hip joint, knee joint and ankle joint etc., wherein with marrow joint and knee joint the most general.The main external manufacturer of a few family occupies the market share of whole artificial joint market more than 60%, and as Depuy, Zimmer, Smith & Nephew, the brand products such as Stryker are the products that in joint replacement surgery, doctor the most often uses.Domestic artificial joint product mostly is that the technical parameter of reference inlet port joint product is imitated to be formed, although also occupy certain market share, due to technique with lack Innovation Input, makes a lot of doctor and is not inclined to selection.
Knee joint is that human body is maximum, dissection is complicated, requires high joint to motor function.The object of TKA replaces with artificial prosthesis to be subjected to badly damaged and can not to exercise the knee joint of normal function, thus eliminate kneed pain, recovers its stability and mobility.TKA has become clinical conventional operation, the clinical acceptance rate of more than 15 years is more than 90%, achieve huge success in the treatment of and degenerative disorders scorching at knee joint endoprosthesis, be described as one of important milestone in 20th century orthopaedics development history.Artificial knee joint have references to the kneed anatomical shape of normal person completely, is a kind of Bionic Design goods.Imitate structure and the model of action of human body knee joint.Artificial knee joint, comprising: the rare joint spacer made of metal lateral femoral condyle prosthesis, tibial plateau prosthese and superhigh molecular weight polyethylene.
Knee joint anatomy and articular surface geometric features are artificial knee joint design basis, but the artificial knee joint product great majority of clinical practice are at present Depuy, Zimmer, Smith & Nephew, the product of Stryker tetra-company, be the prosthese carrying out seriation, standardized designs according to west ethnic group knee joint anatomy and articular surface geometric features, the anatomical features of deflection westerner and living habit, be difficult to the specific demand meeting the east ethnic groups such as east ethnic group.Such as: east ethnic group tibial plateau osteotomy area is less than westerner, and tibial plateau osteotomy area transverse diameter and anteroposterior diameter ratio are greater than westerner, more obvious in short and small east ethnic group women; In addition, due to different in daily behavior moves and be cultural of east ethnic group and Western patients, east ethnic group knee sprung degree is caused to be greater than westerner; Medical circle generally reflects that existing USA and Europe artificial joint product can not adapt to the needs of domestic patient well.
The present invention is based on east ethnic group knee-joint anatomy parameter measurements, a kind of artificial knee joint matched with east ethnic group knee-joint anatomy form (knee-joint anatomy feature, articular surface geometric features) of design.
Summary of the invention
Object of the present invention is exactly the artificial knee joint of a kind of applicable east ethnic group provided for the deficiencies in the prior art part.
For achieving the above object, technical scheme of the present invention is: a kind of artificial knee joint, includes lateral femoral condyle prosthesis, tibial plateau prosthese, joint spacer,
Lateral femoral condyle prosthesis, comprise: the femoral joint face of matching with joint spacer, faying face, location wing, square hole between the condyle faying face of fixation, condyle has been combined with sclerotin, femoral joint face is positioned at the both sides, the back side of lateral femoral condyle prosthesis, have a platform in the middle of the front of lateral femoral condyle prosthesis, platform has square hole, and the two sides of platform are faying face between condyle, the both sides of platform are condyle faying face, the side of condyle faying face be provided with for the condyle of femur of patient outside combine auxiliary fixing location wing; Described femoral joint face and east ethnic group knee-joint anatomy characteristic match and realize larger range of flexion, femur end between described condyle faying face and condyle after faying face formation structure encirclement osteotomy, between described condyle faying face and condyle, faying face has the hydroxyapatite coating layer for inducing bone cell growth to realize biological fixation;
Tibial plateau prosthese, comprise: platform body, tibia faying face, for insert proximal tibia pulp cavity tibia marrow in handle, described platform body upper surface is have the type groove and middle circular groove of receiving joint spacer, described tibia faying face and east ethnic group tibial plateau osteotomy anatomical structure match, and in described tibia faying face and tibia marrow, handle has the hydroxyapatite coating layer for inducing bone cell growth to realize biological fixation;
Joint spacer, both sides, described joint spacer top have the tibial prosthesis face of matching with the femoral joint face on lateral femoral condyle prosthesis to realize motion of knee joint pair, have for limiting knee articulation degree and preventing the projection of joint dislocation in the middle of described joint spacer top, the bottom of joint spacer has the convex configuration that mates with described type groove and has the dome configuration mated with described middle circular groove;
After assembling, lateral femoral condyle prosthesis is placed on the tibial prosthesis face of joint spacer by the activity of femoral joint face, and the projection in the middle part of described joint spacer puts in the square hole in the middle of lateral femoral condyle prosthesis to limit knee articulation degree and to prevent joint dislocation; The convex configuration activity of joint spacer is installed on the type groove of tibial plateau prosthese, and the dome configuration activity of joint spacer is installed on the described middle circular groove of tibial plateau prosthese.
Femoral joint face coordinates to form the joint motions realizing larger range of flexion secondary with human tibia articular surface; What tibia faying face and east ethnic group tibial plateau osteotomy anatomical structure matched to realize maximum match area plays carrying effect, reduces the stress that sclerotin is subject to prosthese.
Condyle faying face has five connected faces in order to combine closely with the condyle of femur sclerotin of patient.
The prismatic structure of rotating is limited for being used for bottom handle in described tibia marrow.
Described femoral joint face is the high burnishing surface of the coefficient of friction for reducing and between joint spacer.
Tibial prosthesis face is the high burnishing surface of the coefficient of friction for reducing and between lateral femoral condyle prosthesis.
Described joint spacer polythene material is made.
After adopting said structure, artificial knee joint of the present invention, solves east ethnic group knee-joint anatomy form and the existing artificial knee joint product that cause and east ethnic group knee-joint anatomy form unmatched technical problem not consistent with west ethnic group knee-joint anatomy form.Wherein, space structure design and the east ethnic group knee-joint anatomy characteristic in femoral joint face, tibial prosthesis face match, femoral joint face coordinates the joint motions that can form the larger range of flexion of realization secondary with tibial prosthesis face, meet the daily behavior kinetic characteristic of east ethnic group; Tibia faying face has the shape matched with east ethnic group tibial plateau osteotomy anatomical structure, selects to be applicable to the model of personalized patient during tibia die trial, can maximum match area play carrying effect, reduce the stress that sclerotin is subject to prosthese; Dual-inlaid between tibial plateau body and joint spacer makes to combine more tight, reduces joint spacer deformation, increases service life; Artificial knee joint of the present invention is applicable to the east ethnic group patient needing Total knee arthroplasty.
Accompanying drawing explanation
Fig. 1 is the stereo decomposing structural representation of the embodiment of the present invention.
Fig. 2 is the perspective view of the embodiment of the present invention.
Fig. 3 is the perspective view one of the lateral femoral condyle prosthesis in the embodiment of the present invention.
Fig. 4 is the perspective view two of the lateral femoral condyle prosthesis in the embodiment of the present invention.
Fig. 5 is the perspective view one of the tibial plateau prosthese in the embodiment of the present invention.
Fig. 6 is the perspective view two of the tibial plateau prosthese in the embodiment of the present invention.
Fig. 7 is the perspective view one of the joint spacer in the embodiment of the present invention.
Fig. 8 is the perspective view two of the joint spacer in the embodiment of the present invention.
Detailed description of the invention
As shown in figures 1-8, a kind of artificial knee joint of the present invention, includes lateral femoral condyle prosthesis 10, tibial plateau prosthese 20, joint spacer 30,
Lateral femoral condyle prosthesis 10 includes faying face 13, location wing 14, square hole 15 between femoral joint face 11, condyle faying face 12, condyle, femoral joint face 11 is positioned at the both sides, the back side of lateral femoral condyle prosthesis 10, the front of lateral femoral condyle prosthesis 10 is a platform, platform has square hole 15, the two sides of platform are faying face 13 between condyle, the both sides of platform are condyle faying face 12, the side of condyle faying face 12 have location wing 14;
Femoral joint face 11 is high polishing curved surface with the coefficient of friction reduced and between joint spacer 30, and the shape in femoral joint face 11 and size match with east ethnic group knee-joint anatomy characteristic, femoral joint face 11 coordinates to form the joint motions pair realizing larger range of flexion with human tibia articular surface;
What tibia faying face 22 and east ethnic group tibial plateau osteotomy anatomical structure matched to realize maximum match area plays carrying effect, reduces the stress that sclerotin is subject to prosthese.
Condyle faying face 12 has five connected faces in order to combine closely with the condyle of femur sclerotin of patient;
Between condyle faying face 13 be two planes of symmetry for the condyle of femur of patient inside combine closely;
Between described condyle faying face 12 and condyle, faying face 13 has the hydroxyapatite coating layer for inducing bone cell growth to realize biological fixation;
Location wing 14 for the condyle of femur of patient outside combine auxiliary fixing;
Square hole 15 in the middle of lateral femoral condyle prosthesis 10 limits knee articulation degree for receiving joint spacer 30 projection 32 and prevents joint dislocation;
Described tibial plateau prosthese 20 comprises: platform body 21 has the type groove 24 and circular groove 25 of receiving joint spacer 30, dual-inlaid makes combination tightr, described tibia faying face 22 has the shape that matches with east ethnic group tibial plateau osteotomy anatomical structure in order to combine closely with the condyle of femur sclerotin of patient, described tibia faying face 22 has hydroxyapatite coating layer and realizes biological fixation for inducing bone cell growth, in described tibia marrow, handle 23 realizes fixing for inserting proximal tibia pulp cavity, is prismatic restriction rotation in described tibia marrow bottom handle 23;
Joint spacer 30 has tibial prosthesis face 31 and realizes motion of knee joint pair for coordinating with femoral joint face, tibial prosthesis face 31 is high polishing, there is projection 32 for limiting knee articulation degree and preventing joint dislocation in the middle part of described joint spacer 30, described joint spacer 30 has configuration 33 and 34 for coordinating with tibial plateau prosthese 20, and described joint spacer 30 is made with polythene material;
After assembling, lateral femoral condyle prosthesis 10 is placed on the tibial prosthesis face 31 of joint spacer 30 by femoral joint face 11 activity, and the projection 32 in the middle part of described joint spacer 30 puts in the square hole 15 in the middle of lateral femoral condyle prosthesis 10 to limit knee articulation degree and to prevent joint dislocation; Convex configuration 33 activity of joint spacer 30 is installed on the type groove 24 of tibial plateau prosthese 20, and dome configuration 34 activity of joint spacer 30 is installed on the described middle circular groove 25 of tibial plateau prosthese 20.
During operation is implemented, after osteotomy, after tibia die trial, joint spacer die trial and femur die trial, first tibial plateau prosthese 20 is installed, then joint spacer 30 is installed, install together with after also can in advance joint spacer 30 being assembled with tibial plateau prosthese 20; Then lateral femoral condyle prosthesis 10 is installed;
Natural kneed motor pattern be one have concurrently bend and stretch, roll, slide, the multivariant motor pattern of complexity that sidesway and axle position rotate.Artificial complete knee joint of the present invention is intended to emulation reconstruction of knee motor function.Perform the operation in implementing, tibial plateau prosthese 20, joint spacer 30 move relative to nothing with tibia after installing, and lateral femoral condyle prosthesis 10 moves relative to nothing with femur after installing, and complete tibial plateau prosthese 20, joint spacer 30, lateral femoral condyle prosthesis 10 3 parts assemblings; What form five degree of freedom between femoral joint face 11 and tibial prosthesis face 31 has the compound motion pattern of sliding and roll concurrently, wherein, the square hole 15 of lateral femoral condyle prosthesis 10 and the projection 32 restraint degree of joint spacer 30 also prevent joint dislocation, the motion of emulation reconstruction of knee, finally realizes the kneed flexing of specified campaign degree, interior abduction, interior outward turning motor function.
Space structure design and the east ethnic group knee-joint anatomy characteristic in femoral joint face 11, tibial prosthesis face 31 match, femoral joint face 11 coordinates the joint motions that can form the larger range of flexion of realization secondary with tibial prosthesis face 31, meet the daily behavior kinetic characteristic of east ethnic group; Tibia faying face 31 has the shape matched with east ethnic group tibial plateau osteotomy anatomical structure, selects to be applicable to the model of personalized patient during tibia die trial, can maximum match area play carrying effect, reduce the stress that sclerotin is subject to prosthese; Dual-inlaid between tibial plateau body 31 and joint spacer 30 makes to combine more tight, reduces joint spacer deformation, increases service life.
Above operational version is only one of embodiments of the invention, not as limiting the scope of the invention.For the various structure simple transformation described in the claims in the present invention all within scope.

Claims (8)

1. an artificial knee joint, includes lateral femoral condyle prosthesis (10), tibial plateau prosthese (20), joint spacer (30), it is characterized in that:
Lateral femoral condyle prosthesis (10), comprise: the femoral joint face (11) of matching with joint spacer (30), the condyle faying face (12) of fixation has been combined with sclerotin, faying face (13) between condyle, location wing (14), square hole (15), femoral joint face (11) is positioned at the both sides, the back side of lateral femoral condyle prosthesis (10), a platform is had in the middle of the front of lateral femoral condyle prosthesis (10), platform has square hole (15), the two sides of platform are faying face (13) between condyle, the both sides of platform are condyle faying face (12), the side of condyle faying face (12) be provided with for the condyle of femur of patient outside combine auxiliary fixing location wing (14), described femoral joint face (11) and east ethnic group knee-joint anatomy characteristic match and realize larger range of flexion, femur end between described condyle faying face (12) and condyle after faying face (13) formation structure encirclement osteotomy, between described condyle faying face (12) and condyle, faying face (13) has the hydroxyapatite coating layer for inducing bone cell growth to realize biological fixation,
Tibial plateau prosthese (20), comprise: platform body (21), tibia faying face (22), for insert proximal tibia pulp cavity tibia marrow in handle (23), described platform body (21) upper surface is for having type groove (24) and the middle circular groove (25) of receiving joint spacer (30), described tibia faying face (22) and east ethnic group tibial plateau osteotomy anatomical structure match, and in described tibia faying face (22) and tibia marrow, handle (23) has the hydroxyapatite coating layer for inducing bone cell growth to realize biological fixation;
Joint spacer (30), described joint spacer (30) both sides, top have the tibial prosthesis face (31) of matching with the femoral joint face (11) on lateral femoral condyle prosthesis (10) to realize motion of knee joint pair, have in the middle of described joint spacer (30) top for limiting knee articulation degree and preventing the projection (32) of joint dislocation, the bottom of joint spacer (30) has the convex configuration (33) that mates with described type groove (24) and has the dome configuration (34) mated with described middle circular groove (25);
After assembling, lateral femoral condyle prosthesis (10) is placed on the tibial prosthesis face (31) of joint spacer (30) by femoral joint face (11) activity, and the square hole (15) that the projection (32) at described joint spacer (30) middle part puts in the middle of lateral femoral condyle prosthesis (10) is interior to limit knee articulation degree and to prevent joint dislocation; Convex configuration (33) activity of joint spacer (30) is installed on the type groove (24) of tibial plateau prosthese (20), and dome configuration (34) activity of joint spacer (30) is installed on the described middle circular groove (25) of tibial plateau prosthese (20).
2. want a kind of artificial knee joint described in 1 according to right, it is characterized in that: femoral joint face (11) coordinate with human tibia articular surface to form the joint motions realizing larger range of flexion secondary.
3. want a kind of artificial knee joint described in 2 according to right, it is characterized in that: what tibia faying face (22) and east ethnic group tibial plateau osteotomy anatomical structure matched to realize maximum match area plays carrying effect, reduces the stress that sclerotin is subject to prosthese.
4. want a kind of artificial knee joint described in 3 according to right, it is characterized in that: condyle faying face (12) has five connected faces in order to combine closely with the condyle of femur sclerotin of patient.
5. want a kind of artificial knee joint described in 4 according to right, it is characterized in that: in described tibia marrow, handle (23) bottom limits the prismatic structure of rotating for being used for.
6. want a kind of artificial knee joint described in 5 according to right, it is characterized in that: described femoral joint face (11) is the high burnishing surface for the coefficient of friction reduced and between joint spacer (30).
7. want a kind of artificial knee joint described in 6 according to right, it is characterized in that: tibial prosthesis face (31) are the high burnishing surface for the coefficient of friction reduced and between lateral femoral condyle prosthesis (10).
8. want a kind of artificial knee joint described in any one of 1-7 according to right, it is characterized in that: described joint spacer (30) is made with polythene material.
CN201210294103.4A 2012-08-18 2012-08-18 A kind of artificial knee joint Expired - Fee Related CN102793594B (en)

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CN103070739B (en) * 2013-01-10 2015-12-02 上海晟实医疗器械科技有限公司 Artificial knee-joint thighbone
CN104644290A (en) * 2013-11-18 2015-05-27 中国科学院深圳先进技术研究院 Porous total knee prosthesis
CN103705319A (en) * 2013-12-27 2014-04-09 北京爱康宜诚医疗器材股份有限公司 Biological fixation type tibia platform
CN104586544A (en) * 2015-01-15 2015-05-06 北京爱康宜诚医疗器材股份有限公司 High-flexion type knee joint prosthesis
CN104887354B (en) * 2015-02-10 2017-06-30 江苏奥康尼医疗科技发展有限公司 A kind of combined type high-molecular organic material artificial knee joint
CN105030383A (en) * 2015-05-08 2015-11-11 江苏奥康尼医疗科技发展有限公司 Combined type full-organic-polymer-material artificial unicondylar knee joint
CN105105888A (en) * 2015-09-28 2015-12-02 北京市春立正达医疗器械股份有限公司 Fixed platform knee joint prosthesis
CN107198598A (en) * 2016-03-18 2017-09-26 重庆润泽医药有限公司 A kind of artificial knee joint
CN106726016A (en) * 2017-03-03 2017-05-31 叶川 A kind of knee joint prosthesis system and human synovial repair system
CN107280812A (en) * 2017-07-18 2017-10-24 优适医疗科技(苏州)有限公司 A kind of artificial knee joint prosthesis
CN107616860B (en) * 2017-11-09 2024-05-28 北京安颂科技有限公司 Split type tibia support prosthesis and artificial knee joint
CN109662812B (en) * 2019-03-01 2024-05-17 安徽工程大学 Knee joint prosthesis
CN109662810A (en) * 2019-03-01 2019-04-23 安徽工程大学 A kind of artificial knee joint
CN109662811B (en) * 2019-03-01 2024-05-17 安徽工程大学 Artificial knee joint prosthesis
CN112274300B (en) * 2019-07-24 2025-01-10 青岛大学附属医院 Dual Sliding Field Tibial Plateau Base and Spacer System
CN112972069B (en) * 2019-12-02 2025-01-03 北京蒙太因医疗器械有限公司 Tibial prosthesis and knee joint prosthesis including the same
CN111528980B (en) * 2020-04-16 2023-06-20 上海市杨浦区中心医院(同济大学附属杨浦医院) A femur positioning device for unicondylar replacement of knee joint fixation platform
CN115227458A (en) * 2022-07-11 2022-10-25 广东省科学院新材料研究所 A kind of knee joint prosthesis and preparation method thereof

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