Femur head prosthesis

Details Femur head prosthesis Femur head prosthesis

1991-09-06

1992-04-28

Frinks, Ronald

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

Implantable prosthesis

Bone

623 18, A61F 236

Patent

active

051084503

ABSTRACT:
A femur head prosthesis consists of a shaft having several plate springs fixed unilaterally, which are enclosed by a thin-walled and deformable shell body. The shell body is connected to the shaft edge and seals the enclosed volume so as to be impermeable to air. The plate springs are laminated springs, which are separated by slits. The depth of the slits towards the proximal end leaves a narrow unslit yoke part. When an intermittent load occurs, a slight bending of the yoke part results and, within the yoke part, a slight displacement of the plate springs with respect to one another to result in a damping and a non-linear increase in the compressive force.

REFERENCES:
patent: 4266302 (1981-05-01), Tornier
patent: 4690489 (1987-03-01), Thompson
patent: 4919665 (1990-04-01), Homsy
patent: 4938770 (1990-07-01), Frey et al.

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