Patent · US Expired

Artificial acetabulum

US5080678A · kind A · utility

40Cited by

5References

15Claims

0Family size

Assignee

Sulzer Brothers Limited · CH

Inventors

Lorenzo Spotorno · Savona, IT
Rudolf Koch · Oberhaching, DE
Roland Willi · Neftenbach, CH

Key dates

Filing date	Feb 28, 1991
Grant date	Jan 14, 1992
Priority date	—
Expiry date	Feb 28, 2011

Classification

Technology area (CPC A)Human Necessities
CPC primaryA61F2310/00395
WIPO fieldMedical technology
WIPO sectorInstruments

Abstract

An artificial acetabulum is made with a metal inner shell, a thin outer shell which defines a cavity with the inner shell and an elastic force-transmitting member between the two shells to damp forces imposed on the shells. In addition, a metal gauze layer is disposed about the outer shell for the ingrowth of osseous tissue. The inner and outer shells are connected at the edges so as to impermeable to air so that no particles from the cavity between the shells can reach the surrounding environment. A beading is also provided on the outer shell and/or gauze so as to snap into an appropriate undercut in the osseous tissue during primary implantation.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.