Patent · US Expired

Stem for a femoral hip-joint endoprosthesis

US5456717A · kind A · utility

37Cited by

12References

13Claims

0Family size

Assignee

Plus Endoprothetik AG · CH

Inventors

K. Zweymuller · Wien, AT
Andre Georges Deckner · Paris, FR

Key dates

Filing date	Dec 7, 1993
Grant date	Oct 10, 1995
Priority date	—
Expiry date	Dec 7, 2013

Classification

Technology area (CPC A)Human Necessities
CPC primaryA61F2230/0054
WIPO fieldMedical technology
WIPO sectorInstruments

Abstract

A stem for a femoral hip-joint endoprosthesis comprises a shaft which is substantially rectangular in cross section, with a distal and a proximal end. The distal end tapers substantially conically and the proximal end (16) comprises an insertion means and an extraction means for the insertion and for the extraction of the stem into a marrow space of a femur. A cone is provided to receive a joint ball, the cone being connected to the proximal end of the shaft by way of a neck. The insertion means and the extraction means at the proximal end of the shaft are positioned substantially on the median long axis of the stem so that force transmission during insertion and extraction is coaxial.

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