CN105640673B - A kind of artificial elbow joint surface replacement prosthesis - Google Patents
A kind of artificial elbow joint surface replacement prosthesis Download PDFInfo
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- CN105640673B CN105640673B CN201610142857.6A CN201610142857A CN105640673B CN 105640673 B CN105640673 B CN 105640673B CN 201610142857 A CN201610142857 A CN 201610142857A CN 105640673 B CN105640673 B CN 105640673B
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- steel plate
- fixation steel
- humerus
- elbow joint
- connecting portion
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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
- A61F2/38—Joints for elbows or knees
- A61F2/3804—Joints for elbows or knees for elbows
-
- 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
- A61F2/30721—Accessories
- A61F2/30749—Fixation appliances for connecting prostheses to the body
-
- 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
- A61F2/30767—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth
-
- 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
- A61F2002/30003—Material related properties of the prosthesis or of a coating on the prosthesis
-
- 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
- A61F2002/30108—Shapes
- A61F2002/30199—Three-dimensional shapes
- A61F2002/30224—Three-dimensional shapes cylindrical
-
- 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
- A61F2002/30316—The prosthesis having different structural features at different locations within the same prosthesis; Connections between prosthetic parts; Special structural features of bone or joint prostheses not otherwise provided for
- A61F2002/30329—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
-
- 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
- A61F2/38—Joints for elbows or knees
- A61F2/3804—Joints for elbows or knees for elbows
- A61F2002/3809—Joints for elbows or knees for elbows for radio-humeral joints
-
- 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
- A61F2/38—Joints for elbows or knees
- A61F2/3804—Joints for elbows or knees for elbows
- A61F2002/3822—Humeral components
Landscapes
- Health & Medical Sciences (AREA)
- Orthopedic Medicine & Surgery (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)
- Physical Education & Sports Medicine (AREA)
- Prostheses (AREA)
Abstract
The invention discloses a kind of artificial elbow joint surface replacement prosthesis, including：Its part that is matching with distal humerus shape and being placed in distal humerus, and be connected with its part and be separately fixed at the internal fixation steel plate of humerus columnae medialis and humerus mixed lateral column and outer fixation steel plate；Its part is hollow class cylindrical-shaped structure, and the outer shape of its part is identical with the articular surface shape of distal humerus, and external contacting surface contacts for lubricious surface and with proximal ulna articular surface；One end that internal fixation steel plate connects its part has first connecting portion and second connecting portion, and first connecting portion and second connecting portion are located in two orthogonal planes respectively.The present invention can be avoided during prosthetic replacement to the bone loss caused by operation such as the extensive stripping of elbow joint surrounding soft tissue and osteotomy, expansion marrow, the prosthetic loosening that plug-in type prosthese can be avoided to occur, moreover it is possible to reduce the incidence of the deep infection caused by marrow transluminal operation.
Description
Technical field
The present invention relates to artificial elbow joint prosthese technical field, and in particular to a kind of artificial elbow joint surface replacement prosthesis.
Background technology
Elbow joint is human body complexity joint, it bends and stretches and rotating biological function is to the movable significant of people.Elbow joint is false
Body displacement technique is suitable for joint structure heavy damage, and the limited operation for retaining autologous tissue's structure is difficult to reach and preferably entangles
During plus effect, the design of elbow joint prosthese must take into account the functional anatomy and biomethanics of ancon.Chinese patent
CN1121847C, CN2659380Y and CN201879868U individually disclose the artificial prosthesis of several elbow joints.This few class prosthese
Main to include humeral component and ulna component, said modules are formed by handle body part and articular portion, the handle body of prosthesis handle
The ossis of humerus and ulna is inserted into part respectively, and articular portion is then nested by casing with crankshaft structure to be formed joint and connect knot
Structure.
Existing artificial elbow joint prosthese is full Elbow replacement prosthese, is understood during prosthetic replacement around to elbow joint
Soft tissue is peeled off extensively, and wound is larger, and osteotomy is carried out in art and expands marrow, causes the loss of bone amount.In addition, in prosthese
It is high easily to occur complication, the revision rate such as prosthetic loosening, unstable, prosthetic component failure after displacement technique.And prosthetic replacement it is postoperative go out
Existing severe infections, can cause operative failure, cause to be difficult to the influence retrieved to suffering from elbow.
The content of the invention
The technical problems to be solved by the invention are：A kind of artificial elbow joint surface replacement prosthesis is provided, prosthese is solved and puts
To the bone loss caused by operation such as the extensive stripping of elbow joint surrounding soft tissue and osteotomy, expansion marrow during changing；Avoid plug-in type
The prosthetic loosening that prosthese occurs；Reduce the incidence of the deep infection caused by marrow transluminal operation.
In order to solve the above technical problems, the technical scheme is that：
The present invention provides a kind of artificial elbow joint surface replacement prosthesis, including：Match with distal humerus shape and peace
Its part of distal humerus is placed on, and is connected with its part and is separately fixed on the outside of humerus columnae medialis and humerus
The internal fixation steel plate of column and outer fixation steel plate；Its part is hollow class cylindrical-shaped structure, its part it is outer
Portion's shape is identical with the articular surface shape of distal humerus, and external contacting surface connects for lubricious surface and with proximal ulna articular surface
Touch, the inside contact surface of its part is frosted fine particulate surface；The internal fixation steel plate connects its part
One end there is first connecting portion and second connecting portion, the first connecting portion and second connecting portion are mutually hung down positioned at two respectively
In straight plane.
Wherein, in above-mentioned artificial elbow joint surface replacement prosthesis, on the internal fixation steel plate and outer fixation steel plate
It is provided with multiple mounting holes.
Wherein, in above-mentioned artificial elbow joint surface replacement prosthesis, further include：Connector, for being inserted into the fixation
Hole, its part, internal fixation steel plate and outer fixation steel plate are fixed on humerus.
Wherein, in above-mentioned artificial elbow joint surface replacement prosthesis, the connector is fixing screws, the mounting hole
For the screw hole to match with the fixing screws.
Wherein, in above-mentioned artificial elbow joint surface replacement prosthesis, its part, internal fixation steel plate and outer fixation
Steel plate is that pure titanium material is made.
Above-mentioned technical proposal is employed, beneficial effects of the present invention are：
(1) artificial elbow joint surface replacement prosthesis provided by the present invention is compared with existing full Elbow replacement prosthese,
Elbow joint surrounding ligaments, and limb preservation bone to greatest extent only are retained into line replacement to the joint part of distal humerus
The integrality of structure, avoids the destruction of Elbow Stability, and reduces the possibility of fracture of humerus；
(2) present invention is placed in its part of distal humerus, passes through fixation steel plate and the distal humerus mixed lateral column of both sides
Fixed with columnae medialis, its part effectively can be fixed on distal humerus, and the interior contact surface of prosthesis sleeve is frosted fine grained
Shape surface, can increase prosthesis sleeve and the contact area of distal humerus, reduce the possibility at a specified future date that prosthetic loosening occurs；
(3) artificial elbow joint surface replacement prosthesis of the invention is in use without marrow transluminal operation, so that
Effectively reduce the probability of happening of deep infection.
Brief description of the drawings
Fig. 1 is the structure diagram of the artificial elbow joint surface replacement prosthesis of the embodiment of the present invention；
Wherein：1 is its part；2 be internal fixation steel plate；3 be outer fixation steel plate；4 be first connecting portion；5 connect for second
Socket part；6 be mounting hole.
Embodiment
With reference to the accompanying drawings and examples, the embodiment of the present invention is described in further detail.Implement below
Example is used to illustrate the present invention, but cannot be used for limiting the scope of the invention.
As shown in Figure 1, a kind of artificial elbow joint surface replacement prosthesis of the embodiment of the present invention includes：With distal humerus shape
Its part 1 that is matching and being placed in distal humerus, and be connected with its part 1 and be separately fixed at humerus columnae medialis
With the internal fixation steel plate 2 and outer fixation steel plate 3 of humerus mixed lateral column.
Its part 1 is hollow class cylindrical-shaped structure.The outer shape of its part 1 and the articular surface of distal humerus
Shape is identical, and external contacting surface contacts for lubricious surface and with proximal ulna articular surface, is conducive to joint motion.The prosthese
The inside contact surface of part 1 is frosted fine particulate surface, can increase the contact area of the contact surface and bone face.
One end that internal fixation steel plate 2 connects its part 1 has first connecting portion 4 and second connecting portion 5, first connection
Portion 4 and second connecting portion 5 are located in two orthogonal planes respectively, i.e. first connecting portion 4 and second connecting portion 5 is connected to
On the two sides being generally perpendicular to each other of 1 one end of its part.It is both provided with internal fixation steel plate 2 and outer fixation steel plate 3 multiple
Mounting hole 6, is inserted into mounting hole 6 by connector, its part 1, internal fixation steel plate 2 and outer fixation steel plate 3 can be fixed on the upper arm
On bone, which is but is not limited only to fixing screws, and mounting hole 6 is but is not limited only to the screw hole to match with fixing screws,
Certainly, fixing screws and screw hole may be designed as locking nail, with the fastness that increase is fixed.
Its part 1, internal fixation steel plate 2 and outer fixation steel plate 3 in this implementation are that pure titanium material is made.
During operation, distal humerus osteotomy is first carried out, its part 1 of artificial elbow joint surface replacement prosthesis is embedded in osteotomy
Distal humerus bone face afterwards, equivalent to the articular surface part that substituted for distal humerus, so elbow joint biomechanics characteristic is basic
Remain unchanged.The interior contact surface that its part 1 is contacted with bone face is frosted fine particulate surface, adds the contact surface and bone face
Contact area, while increase skin-friction force, make prosthese be not easy to slip.By internal fixation steel plate 2 and outer fixation steel plate 3 edge respectively
Humerus columnae medialis and the progress bending of humerus mixed lateral column are moulding, bone edges can be bonded, to internal fixation steel plate 2 and outer fixation
The mounting hole 6 of steel plate 3 drills, and squeezes into fixing screws, make its part 1 by internal fixation steel plate 2, internal fixation steel plate 3 with
Distal humerus fixation.
As described above, a kind of artificial elbow joint surface replacement prosthesis of the present invention, is provided with fixed part and supporting part, can keep away
Exempt from postoperative protective device not to be bonded, wear the problems such as uncomfortable, at the same the device thickness is thin, small, morphosis with face
Soft tissue form is consistent, face appearance will not be produced and seriously affected, favourable patient is postoperative to adhere to wearing.
The present invention is not limited to above-mentioned specific embodiment, those of ordinary skill in the art from above-mentioned design,
Without performing creative labour, made a variety of conversion, are within the scope of the present invention.
Claims (5)
- A kind of 1. artificial elbow joint surface replacement prosthesis, it is characterised in that including：Match with distal humerus shape and placement In its part (1) of distal humerus, and it is connected with its part (1) and is separately fixed at humerus columnae medialis and humerus The internal fixation steel plate (2) and outer fixation steel plate (3) of mixed lateral column；Its part (1) is hollow class cylindrical-shaped structure, described The outer shape of its part (1) is identical with the articular surface shape of distal humerus, and external contacting surface for lubricious surface and with Proximal ulna articular surface contacts, and the inside contact surface of its part (1) is frosted fine particulate surface；The interior fixed steel One end that plate (2) connects its part (1) has first connecting portion (4) and second connecting portion (5), the first connecting portion (4) it is located at respectively in two orthogonal planes with second connecting portion (5).
- 2. artificial elbow joint surface replacement prosthesis according to claim 1, it is characterised in that the internal fixation steel plate (2) With multiple mounting holes (6) are both provided with outer fixation steel plate (3).
- 3. artificial elbow joint surface replacement prosthesis according to claim 2, it is characterised in that further include：Connector, is used for The mounting hole (5) is inserted into, its part (1), internal fixation steel plate (2) and outer fixation steel plate (3) are fixed on humerus.
- 4. artificial elbow joint surface replacement prosthesis according to claim 3, it is characterised in that the connector is fixed spiral shell Nail, the mounting hole (6) are the screw hole to match with the fixing screws.
- 5. artificial elbow joint surface replacement prosthesis according to any one of claim 1 to 4, it is characterised in that the vacation Body portion (1), internal fixation steel plate (2) and outer fixation steel plate (3) are that pure titanium material is made.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610142857.6A CN105640673B (en) | 2016-03-14 | 2016-03-14 | A kind of artificial elbow joint surface replacement prosthesis |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610142857.6A CN105640673B (en) | 2016-03-14 | 2016-03-14 | A kind of artificial elbow joint surface replacement prosthesis |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105640673A CN105640673A (en) | 2016-06-08 |
| CN105640673B true CN105640673B (en) | 2018-05-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610142857.6A Active CN105640673B (en) | 2016-03-14 | 2016-03-14 | A kind of artificial elbow joint surface replacement prosthesis |
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| Country | Link |
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| CN (1) | CN105640673B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113730045A (en) * | 2021-10-18 | 2021-12-03 | 上海市第六人民医院 | Distal humerus prosthesis structure |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2806717A1 (en) * | 1978-02-14 | 1979-08-16 | Reinhard Dr Koelbel | Artificial elbow joint with seat and roller - has sloping roller sides and parallel jaws for joint restoration after movement |
| CN1416330A (en) * | 2000-01-30 | 2003-05-07 | 岱密克龙有限公司 | Component for prosthetic joint having diamond load bearing and articulation surface |
| CN201168071Y (en) * | 2008-03-13 | 2008-12-24 | 王友华 | Ulna coronal process prosthesis |
| CN205515046U (en) * | 2016-03-14 | 2016-08-31 | 范存义 | Artifical elbow joint surface replacement prosthesis |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012058448A2 (en) * | 2010-10-27 | 2012-05-03 | Toby Orthopaedics, Llc | System and method for fracture replacement of comminuted bone fractures or portions thereof adjacent bone joints |
| US9730797B2 (en) * | 2011-10-27 | 2017-08-15 | Toby Orthopaedics, Inc. | Bone joint replacement and repair assembly and method of repairing and replacing a bone joint |
-
2016
- 2016-03-14 CN CN201610142857.6A patent/CN105640673B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2806717A1 (en) * | 1978-02-14 | 1979-08-16 | Reinhard Dr Koelbel | Artificial elbow joint with seat and roller - has sloping roller sides and parallel jaws for joint restoration after movement |
| CN1416330A (en) * | 2000-01-30 | 2003-05-07 | 岱密克龙有限公司 | Component for prosthetic joint having diamond load bearing and articulation surface |
| CN201168071Y (en) * | 2008-03-13 | 2008-12-24 | 王友华 | Ulna coronal process prosthesis |
| CN205515046U (en) * | 2016-03-14 | 2016-08-31 | 范存义 | Artifical elbow joint surface replacement prosthesis |
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| Publication number | Publication date |
|---|---|
| CN105640673A (en) | 2016-06-08 |
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Effective date of registration: 20220707 Address after: 430073 area a of Lianying medical Wuhan headquarters base, No. 99, gaokeyuan Road, Donghu New Technology Development Zone, Wuhan, Hubei Province Patentee after: Wuhan Lianying Zhirong Medical Technology Co.,Ltd. Address before: 200233 No. 600, Xuhui District, Shanghai, Yishan Road Patentee before: SHANGHAI SIXTH PEOPLE'S Hospital |
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Application publication date: 20160608 Assignee: Shanghai Lianying Zhirong Medical Technology Co.,Ltd. Assignor: Wuhan Lianying Zhirong Medical Technology Co.,Ltd. Contract record no.: X2022980010709 Denomination of invention: An artificial elbow joint surface replacement prosthesis Granted publication date: 20180511 License type: Common License Record date: 20220720 |
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