05458642 is referenced by 467 patents and cites 3 patents.

This invention comprises of a synthetic intervertebral disc for implantation in the human body. The disc, in its preferred embodiment, is comprised of disc-shaped plates 11(a&b) joined by springs along the inside of the outer perimeter. The plates have oval-like cutouts in their centers for a compressible polymeric core 12 to protrude from on top and bottom. The polymeric core 12 aids in the fitting of the device between the concave surfaces of two vertebrae. An elastomeric covering 14 encircles the area between the plates and is connected to the plates 11(a&b) on top and bottom to prevent body tissues from interfering with the movement of the springs 13(a-i). The spring system distributes forces acting on the disc between the springs and allows normal movement of the vertebrae during flexion and extension of the spine in any direction.

Title
Synthetic intervertebral disc
Application Number
8/183160
Publication Number
5458642
Application Date
January 18, 1994
Publication Date
October 17, 1995
Inventor
Jacqueline M Beer
820 Sycamore Ave. #185, Vista, 92083
CA, US
John C Beer
820 Sycamore Ave. #185, Vista, 92083
CA, US
Agent
Bruce Garlick
IPC
A61F 2/44
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