Prosthesis (i.e. – artificial body members) – parts thereof – or ai – Implantable prosthesis – Bone
Patent
1998-06-04
2000-10-17
Millin, V.
Prosthesis (i.e., artificial body members), parts thereof, or ai
Implantable prosthesis
Bone
A61F 244
Patent
active
061324655
ABSTRACT:
A wedge-shaped prosthetic spinal disc nucleus including a hydrogel core surrounded by a constraining jacket. The hydrogel core is preshaped to form the wedge shape in a hydrated state. The constraining jacket is flexible, but substantially inelastic and is configured to prevent the hydrogel core from conforming to an anulus upon hydration. The prosthetic spinal disc nucleus corresponds generally to anatomical variations in disc space geometry, generally defined by separable areas or compartments, thus improving performance. In one preferred embodiment, the prosthetic spinal disc nucleus includes a radiopaque marker for indicating a location and orientation following implant.
REFERENCES:
patent: 3867728 (1975-02-01), Stubstad et al.
patent: 3875595 (1975-04-01), Froning
patent: 3883902 (1975-05-01), Lynch
patent: 4349921 (1982-09-01), Kuntz
patent: 4772287 (1988-09-01), Ray et al.
patent: 4863477 (1989-09-01), Monson
patent: 4904260 (1990-02-01), Ray et al.
patent: 4911718 (1990-03-01), Lee et al.
patent: 5047055 (1991-09-01), Bao et al.
patent: 5171280 (1992-12-01), Baumgartner
patent: 5192326 (1993-03-01), Bao et al.
patent: 5306309 (1994-04-01), Wagner et al.
patent: 5314478 (1994-05-01), Oka et al.
patent: 5443514 (1995-08-01), Steffee
patent: 5458642 (1995-10-01), Beer et al.
patent: 5458643 (1995-10-01), Oka et al.
patent: 5514180 (1996-05-01), Heggeness et al.
patent: 5534028 (1996-07-01), Bao et al.
patent: 5534030 (1996-07-01), Navarro et al.
patent: 5571189 (1996-11-01), Kuslich
patent: 5645597 (1997-07-01), Krapiva
patent: 5653762 (1997-08-01), Pisharodi
patent: 5674295 (1997-10-01), Ray et al.
patent: 5705780 (1998-01-01), Bao
patent: 5824093 (1998-10-01), Ray et al.
Article entitled, The Artificial Disc Introduction, History and Socioeconomics, by Charles Dean Ray; pp. 205-225; dated 1992.
Assell Robert L.
Ray Charles D.
Millin V.
Nguyen Tram A.
RayMedica, Inc.
LandOfFree
Tapered prosthetic spinal disc nucleus does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Tapered prosthetic spinal disc nucleus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Tapered prosthetic spinal disc nucleus will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-464088