Prosthesis (i.e. – artificial body members) – parts thereof – or ai – Implantable prosthesis – Bone
Patent
1996-06-25
1999-11-02
Prebilic, Paul B.
Prosthesis (i.e., artificial body members), parts thereof, or ai
Implantable prosthesis
Bone
623 16, 623 18, 623 20, A61F 244
Patent
active
059761865
ABSTRACT:
An article for use in the preparation of a hydrogel prosthetic nucleus, for an intervertebral disc, having equilibrium water contents (EWCs) of from about 30 to about 90% and compressive strengths of at least 4 meganewtons per square meter (MNm.sup.-2), at their EWCs, when subjected to the same constraints as the normal nucleus, comprising one or more xerogel rods containing from zero to less than the EWC. A method for preparing a hydrogel prosthetic nucleus, for a vertebral disc, comprising one or more hydrogel rods containing from about 30 to about 90% water, and having compressive strengths of at least 1 MNm.sup.-2, at their EWCs, which comprises inserting one or more hydrophilic xerogel rods, which at their EWC will contain from about 30 to about 90% water and have compressive strengths of at least 1 MNm.sup.-2, containing water in an amount from about zero to less than their EWC, into the cavity of the disc through an opening in its annulus and allowing the rod, or rods, to absorb sufficient water from the body fluids to attain their EWCs and essentially fill the intervertebral nuclear disc cavity.
REFERENCES:
patent: 3607848 (1971-09-01), Stoy et al.
patent: 3867728 (1975-02-01), Stubstad et al.
patent: 3875595 (1975-04-01), Froning
patent: 4309777 (1982-01-01), Patil
patent: 4331783 (1982-05-01), Stoy
patent: 4337327 (1982-06-01), Stoy
patent: 4349921 (1982-09-01), Kunz
patent: 4369294 (1983-01-01), Stoy
patent: 4370451 (1983-01-01), Stoy
patent: 4379874 (1983-04-01), Stoy
patent: 4420589 (1983-12-01), Stoy
patent: 4631188 (1986-12-01), Stoy et al.
patent: 4663358 (1987-05-01), Hyon et al.
patent: 4714469 (1987-12-01), Kenna
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: 5314478 (1994-05-01), Oka et al.
patent: 5458643 (1995-10-01), Oka et al.
patent: 5534028 (1996-07-01), Bao et al.
patent: 5578086 (1996-11-01), Prescott
patent: 5645592 (1997-07-01), Nicolais et al.
patent: 5855619 (1999-01-01), Caplan et al.
Bao Qi-Bin
Higham Paul A.
Prebilic Paul B.
Stryker Technologies Corporation
LandOfFree
Hydrogel intervertebral 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 Hydrogel intervertebral disc nucleus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Hydrogel intervertebral disc nucleus will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2128722