Composite prosthesis

Details Composite prosthesis Composite prosthesis

1992-05-11

1994-05-24

Isabella, David

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

Implantable prosthesis

Bone

623 16, A61F 232

Patent

active

053144929

ABSTRACT:
A composite stem for a prosthesis, particularly a hip prosthesis, including a metal core and a fiber reinforced composite shell surrounding the core to provide modulus values that are similar to bone. The composite shell is preferably composed of braided fibers and a thermoplastic resin. The stiffness of the prosthesis can be varied along the length of the stem. The metal core contributing between 5 and 25 percent of the total flexural stiffness of the stem.

REFERENCES:
patent: 3623164 (1971-11-01), Boknos
patent: 4662887 (1987-05-01), Turner et al.
patent: 4892552 (1990-01-01), Ainsworth et al.
patent: 4902297 (1990-02-01), Devanathan
patent: 4978358 (1990-12-01), Bobyn
patent: 4978360 (1990-12-01), Devanathan
Current Inderdisiplinary Res. 1985, pp. 371-376, M. Perren, et al.
NASA Tech Briefs, Mar. 1992, pp. 85 & 86.

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