Endoprosthesis

Details Endoprosthesis Endoprosthesis

1985-06-27

1987-09-22

Apley, Richard J.

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

Implantable prosthesis

Bone

A61F 230

Patent

active

046952837

ABSTRACT:
An endoprosthesis insertable in a bone cavity comprises an anchoring shaft having circular steps at least in supporting regions (X,Y) of the anchoring shaft in which a support of said anchoring shaft in the bone takes place. The shaft has at a free end remote from a mouth of the bone opening a straight portion. The steps are formed in at least the straight portion one after another without undercuts. The shaft conically widens from said end towards an end opposite to said free end. The steps have contours which are at least in the region in which the steps are supported in the bone, individually adjusted to respective cross-sections of the bone hollow, which cross-sections exist at the positions of the individual steps when the endoprosthesis is inserted into the bone.

REFERENCES:
patent: 3894297 (1975-07-01), Mittelmeier
patent: 4064568 (1977-12-01), Grundei et al.
patent: 4068324 (1978-01-01), Townley et al.
patent: 4185383 (1980-01-01), Heimke et al.
patent: 4292695 (1981-10-01), Koeneman
"Individually Shaped Cementless Hip Endoprosthesis" by G. Aldinger.

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