Hip joint prosthesis

Details Hip joint prosthesis Hip joint prosthesis

1991-09-30

1992-04-28

Frinks, Ronald

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

Implantable prosthesis

Bone

623 18, A61F 232, A61F 230

Patent

active

051084465

ABSTRACT:
The hip joint prosthesis consists of two cups which are anchored together in the direction of the polar axes by a snap connection. The inner cup is made of cobalt alloy and outer cup of titanium. The outer cup carries a straddling dowel which projects into the bone tissue and which is subdivided into radially deflectable segments having sharp edges thereon. The inner cup has a shaped body which projects into the dowel and which is shaped so as to expand the deflectable segments upon rotation of the inner cup within the outer cup. Each dowel segment is provided with a notch to receive a corner of the shaped body so as to hold the body in a holding position in a snap-fit manner.

REFERENCES:
patent: 4828565 (1989-05-01), Duthoit et al.
patent: 4955917 (1990-09-01), Karpf

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