Patent · US Expired

Articular prosthesis and its preparation process

US4888019A · kind A · utility

3Cited by

6References

6Claims

0Family size

Assignee

Compagnie Oris Industrie, SA · FR

Inventors

Gilbert Gauneus · Meudon, FR
Maryvonne Nicaise · Le Puy-en-Velay, FR
Kifu O. Tran · Les Ulis, FR

Key dates

Filing date	Sep 9, 1982
Grant date	Dec 19, 1989
Priority date	—
Expiry date	Sep 9, 2002

Classification

Technology area (CPC A)Human Necessities
CPC primaryA61F2002/30934
WIPO fieldMedical technology
WIPO sectorInstruments

Abstract

A polymer articular prosthesis having a sliding surface, wherein the latter is constituted by a thin layer of said polymer grafted with tetrafluoro-ethylene. The process for preparing the articular prosthesis comprises coating with a protective varnish the outer surface of a polymer articular prosthesis having a sliding surface, except in the areas constituting this sliding surface irradiating the prosthesis with ionizing rays, contacting the prosthesis with the tetrafluoroethylene vapour for adequate time to bring about tetrafluoroethylene grafting over a limited thickness of the polymer forming the sliding surface and then removing the protective varnish.

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