Patent EP0600806B1 successfully refreshed from Google Patents.
EP0600806B1
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EP
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Tricompartimental knee prosthesis
Assignee: Medinov SA
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Filing: 1993-11-25
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Granted: 1997-06-04
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Expires: 2013-11-25
Abstract
No abstract record available.
Inventors
- 👤 Michel Colombier
- 👤 Jacques Dr. Delfosse
- 👤 Jean Claude Dr. Moati
- 👤 Jean Christophe Dr. Chatelet
- 👤 André Dr. Ferreira
- 👤 Pierre Dr. Brugere
- 👤 Rémy Dr. Charpenet
- 👤 Marc Dr. Paulin
- 👤 Jacques Dr. Preaut
- 👤 Brahim Dr. Khenifar
- 👤 Jean Michel Dr. Huc De Bat
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-08 21:11
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/30; A61F2/38; A61F2/3877
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
177 words
Three-compartment knee prosthesis comprising a femoral implant (1) and a tibial implant (2), the femoral implant having a cutout which delimits two divergent condylar support pads (1b) (1c) joined by a trochlea (1d), characterised in that the shape of the femoral implant is a result of a combination of the following characteristics: - the internal (1b) and external (1c) condylar pads have different radii of curvature in the sagittal plane, - the bearing and wearing surfaces (1b2) (1c2) of the internal (1b) and external (1c) condylar pads are of different width and cross section in the frontal plane, - the internal (1b) and external (1c) condylar pads have different rolling amplitudes in the posterior part, - the trochlea (1d) delimits a surface having a geometrical toroidal section (1d1) in the frontal and sagittal planes and is raised in an anatomical manner on its outer side, - the spread of the bearing and wearing surfaces of the condylar pads is increased in relation to the anatomy, - the condylar pads are flattened to improve the distribution of pressure.
Claim 2
Dependent Claim
32 words
Prosthesis as claimed in claim 1, characterised in that the radius of curvature of the internal condylar pad (1b) is less than the radius of curvature of the external condylar pad (1c).
Claim 3
Dependent Claim
44 words
Prosthesis as claimed in claims 1 and 2, characterised in that the lateral edges (1b3) of the anterior part of the internal condylar pad (1b) has a radius of curvature that corresponds to the obliquity of the bony internal condyle in the horizontal plane.
Claim 4
Dependent Claim
33 words
Prosthesis as claimed in claim 1, characterised in that the internal condylar pad (1b) has a transverse bearing and wearing surface (1b2) that is narrower than that of the external condylar pad (1c).
Claim 5
Dependent Claim
22 words
Prosthesis as claimed in claim 1, characterised in that the internal (1b) and external (1c) condylar pads have flattened transverse bearing surfaces.
Claim 6
Dependent Claim
49 words
Prosthesis as claimed in claim 1, characterised in that the length of the posterior curve (1c3) of the external condylar pad (1c) exceeds that of the internal condylar pad (1b) with the thicknesses of the condylar pads (1b) and (1c) being increased at the level of the posterior part.
Claim 7
Dependent Claim
58 words
Prosthesis as claimed in claim 1, characterised in that, in the sagittal plane and in the frontal plane, the trochlea (1d) is in the shape of a torus of which the cross section is offset relative to the main axis by an angle (α) on the inner side and, essentially, by an angle (2α) on the outer side.
Claim 8
Dependent Claim
49 words
Prosthesis as claimed in claim 1, characterised in that the distance between the bearing and wearing surfaces (1b2) (1c2) of the condylar pads is increased relative to the anatomy of the knee in order to offset those parts that are in contact with the tibial element towards the outside.
Claim 9
Dependent Claim
30 words
Prosthesis as claimed in claim 1, characterised in that the tibial implant (2) has an asymmetric base (2a) having an anterior posterior length that is greater on the outer side.
Claim 10
Dependent Claim
20 words
Prosthesis as claimed in claim 9, characterised in that the tibial base is flat and has a posterior anti-luxation edge.
References Cited (Backward Citations)
No citation records indexed.
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