Shock absorbing element for a load bearing prosthesis

Details Shock absorbing element for a load bearing prosthesis Shock absorbing element for a load bearing prosthesis

1996-05-22

1998-04-07

Weiss, John G.

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

Implantable prosthesis

Bone

623 18, A61F 236

Patent

active

057359059

ABSTRACT:
The present invention provides a method and structure for absorbing shock in a load bearing prosthesis, particularly in a load-bearing skeletal prosthesis. Where the prosthesis is a hip-joint replacement, the invention provides a method and structure for absorbing shock (1) at the interface between the femoral head and cup, and (2) at the interface between the femur and the stem of the prosthesis. Where the prosthesis is a femoral head prosthesis, the prosthesis is formed using two separate components which are mechanically connected using an elastomeric component. The connection permits relative motion between the structural components of the prosthesis, with the elastomeric component acting as a passive shock absorbing element.

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Robert H. Finney, et al. "Design of Elastomeric Components by using the Finite Element Technique." The Shock and Vibration Bulletin, 47:1 (Sep. 1977) 177-188.
P.B. Lindley, "Engineering Design with Natural Rubbers." NR Technical Bulletin5, (1970) 1-50.

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