Patent · US Active

Prosthesis for part of a joint, with an anti-twist element

US8491663B2 · kind B2 · utility

3Cited by

14References

2Claims

0Family size

Assignee

Zrinski AG · DE

Inventors

Nicola Lindner · Wurmlingen, DE
Stephan Eckhof · Tuttlingen, DE
Thomas Feldhaus · Poquoson, US

Key dates

Filing date	May 9, 2008
Grant date	Jul 23, 2013
Priority date	—
Expiry date	May 9, 2028

Classification

Technology area (CPC A)Human Necessities
CPC primaryA61F2002/4251
WIPO fieldMedical technology
WIPO sectorInstruments

Abstract

The invention relates to a joint part prosthesis, particularly for a finger joint, consisting of either a proximal or a distal component, as well as a shaft that extends away from this component, to be mounted in a bone, which shaft is configured with a fin-like anti-twist device. According to the invention, it is provided that as an anti-twist device (7), at least two anti-twist elements (8) are disposed on the mantle surface (6) of the shaft (4), with rotation symmetry, and extend radially away from this mantle surface (6) and in the longitudinal direction of the shaft (4), whereby the distance of the anti-twist elements (8) from the mantle surface (6) decreases slightly in the direction toward the free end (5) of the shaft (4).

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