Replacement disc
OwnerErnest L. Downeyinventor
Life of this patent
Estimating the term…
Abstract
A replacement disc for use between adjacent vertebrae comprising: a body portion having substantially opposing first and second surfaces and being adapted to fit and be held between the adjacent vertebrae; first securement means extending out from the first surface and acting to secure the replacement disc to the first adjacent vertebrae; and second securement means extending out from the second surface and acting to secure the replacement disc to the second adjacent vertebrae.
Claims12
A replacement disc for use between adjacent vertebrae comprising:
- an outer portion;
- and
- an inner portion substantially completely surrounded by said outer portion, said inner portion being made of a flexible foamed polyethylene and being softer than said outer portion, said replacement disc being sized and shaped to fit the be held between said adjacent vertebrae.
A replacement disc for use between adjacent vertebrae comprising:
- an outer portion;
- and
- an inner portion substantially completely surrounded by said outer portion, said inner portion consisting essentially of a solid foamed material and being softer than said outer portion, said replacement disc being shaped in substantially the form of a natural disc which is normally present between said adjacent vertebrae, and being located between said adjacent vertebrae.
A replacement disc for use between adjacent vertebrae comprising:
- an outer portion;
- and
- an inner portion substantially completely surrounded by said outer portion, said inner portion being made of a foamed material and being softer than said outer portion, said replacement disc being sized and shaped in substantially the form of a natural disc which is present between adjacent vertebrae to fit and be held between said adjacent vertebrae.
Dependencies are inferred from the claim text.