Patent EP0298235B1 successfully refreshed from Google Patents.
EP0298235B1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Spinal disc prosthesis
Assignee: Sulzer AG
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Filing: 1988-05-21
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Granted: 1991-12-04
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Expires: 2008-05-21
Abstract
Abstract The intervertebral prosthesis provides a replacement for a damaged disk. The prosthesis is formed as a solid body of kidney-shape and is provided with a metal mesh covering for the ingrowth of tissue. Raised parts are formed on the opposite surfaces of the kidney-shaped body impart lateral stability when in situ.
Inventors
- 👤 Otto Frey
- 👤 Rudolf Koch
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-23 22:34
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/30; A61F2/44; A61F2/442; A61F2002/30001; A61F2002/30108; A61F2002/3011; A61F2002/30112; A61F2002/30133; A61F2002/30316; A61F2002/30535; A61F2002/30576; A61F2002/30578; A61F2/30767; A61F2/30907; A61F2002/30909; A61F2230/00; A61F2230/0002; A61F2230/0004; A61F2230/0015; Y; Y10; Y10S; Y10S606/00; Y10S606/907; Y10S606/91
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
55 words
An intervertebral prosthesis for an arthrodesis in the form of a discoid prosthesis body (1) introducible as an intervertebral disc replacement from the ventral direction between two vertebrae (9), bead-like protuberances (2) being present on its disc surfaces, characterised in that the bead-like protuberances take the form of cylinder segments which include an acute angle.
Claim 2
Dependent Claim
15 words
A prosthesis according to claim 1, characterised in that the prosthesis body (1) is reniform.
Claim 3
Dependent Claim
21 words
A prosthesis according to claim 1, characterised in that the thickness of the prosthesis body (1) narrows conically ventrally to dorsally.
Claim 4
Dependent Claim
18 words
A prosthesis according to claim 1, characterised in that the angle included by the protuberances (2) is π/2.
Claim 5
Dependent Claim
27 words
A prosthesis according to claim 1, characterised in that the prosthesis body (1) is made of plastics and its surfaces are covered by a metal mesh (4).
Claim 6
Dependent Claim
32 words
A prosthesis according to claim 1, characterised in that the prosthesis body (1) is made of titanium or a titanium alloy and its surfaces have a structure promoting the ongrowth of tissue.
Claim 7
Dependent Claim
36 words
A prosthesis according to claim 1, characterised in that the ventral edge (5) of the prosthesis body (1) is covered at least to some extent by tabs (6, 7) formed with apertures (8) for bone screws.
References Cited (Backward Citations)
No citation records indexed.
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