Device for sealing acetabular cup holes

Details Device for sealing acetabular cup holes Device for sealing acetabular cup holes

1996-10-01

1999-03-30

Weiss, John G.

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

Implantable prosthesis

Bone

A61F 234

Patent

active

058882057

ABSTRACT:
The metal shell of an acetabular cup has holes that allow a surgeon to screw the shell to pelvic bone. To prevent the debris of ultra-high molecular weight polyethylene ("UHMWPE") or other plastic liner in the shell from migrating through the holes, the present invention seals each screw-receiving hole with a thin UHMWPE disc. The disc snaps into an annular groove in the hole. With the disc in place, debris from the liner does not pass through the screw holes.

REFERENCES:
patent: 5041141 (1991-08-01), Ypma et al.
patent: 5314487 (1994-05-01), Schryver et al.
patent: 5571198 (1996-11-01), Drucker et al.
Kinamed ATH System; The Exact-Fit Factor; Surgical Technique Reference Chart.

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