Artificial disc

Details Artificial disc Artificial disc

1990-11-21

1991-12-10

Isabella, David J.

Prosthesis (i.e., artificial body members), parts thereof, or ai

Implantable prosthesis

Bone

606 61, A61F 244

Patent

active

050714376

ABSTRACT:
A spinal disc prosthesis comprises an upper flat rigid plate, a lower flat rigid plate, and a flat elastomeric core interposed between said plates and adhered to the plates. A plurality of spaced-apart protuberances extend outwardly from the exposed faces of the plates for engagement with vertebrae above and below the plates. A porous coating covers the exposed surfaces of the plates. The elastomeric core is made of a polyolefin rubber having mechanical properites similar to a natural spinal disc.

REFERENCES:
patent: 3867728, Substad et al.
patent: 4309777 (1982-01-01), Patil
patent: 4714469 (1987-12-01), Kenna
patent: 4743256 (1988-05-01), Brantigan
patent: 4759766 (1988-07-01), Buettner-Janz et al.
patent: 4874389 (1989-10-01), Downey
patent: 4911718 (1990-03-01), Lee et al.
patent: 4917704 (1990-04-01), Frey et al.
McMillin, PHD, "Characterization of Hexsyn, a Polyolefin Rubber", Jul. 1987, vol. 2, Journal of Biomaterials Applications.
Journal of Biomaterials Applications Article.

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