US 5,824,094 A · Spinal disc

Abstract

A spinal disc prosthesis (10) to replace a damaged spinal disc in a spinal column (16) of a human, includes an elastomeric core (200) having upper and lower surfaces (202, 212) which are parallel to each other. An upper rigid plate (20) has opposed first and second surfaces (42, 52). The first surface (42) is affixed to the upper surface (202) of the elastomeric core. The second surface (52) is inclined relative to the first surface (42). A lower rigid plate (120) has opposed third and fourth surfaces (142, 152). The third surface (142) is affixed to the lower surface (212) of the elastomeric core (200) and extends parallel to the first surface (42). The fourth surface (152) is inclined relative to the third surface (142). The second and fourth surfaces (52, 152) are inclined relative to each other.

Claims17

Dependent claims

A spinal disc prosthesis to replace a damaged spinal disc in a spinal column of a human, said spinal disc prosthesis comprising:

an elastomeric core having upper and lower surfaces which are parallel to each other;
an upper rigid plate, said upper rigid plate having opposed first and second surfaces, said first surface being affixed to said upper surface of said elastomeric core, said second surface being inclined relative to said first surface;
and
a lower rigid plate, said lower rigid plate having opposed third and fourth surfaces, said third surface being affixed to said lower surface of said elastomeric core and extending parallel to said first surface, said fourth surface being inclined relative to said third surface, said second and fourth surfaces being inclined relative to each other.

1 more element

Dependencies are inferred from the claim text.

Spinal disc

Life of this patent

Spinal disc

Life of this patent

Abstract

Claims17