Non-dislocatable low-wear hip prosthesis
CA 2245249 A1 · Owner: Voydeville, Gilles · Inventors: Voydeville, Gilles
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A hip prosthesis comprising a femoral stem (3) a spherical head (6) fitted over the neck (5) of the femoral stem and a metal socket (1) with which the head is pivotably engageable. A cup (7) is inserted between the head (6) and the socket the head and the cup are made of a ceramic or similar material having a low friction coefficient and the head is pivotable on the cup. Said cup is pivotably fitted in a plastic socket (8) that is in turn fitted in the metal socket (1). Said prosthesis thus comprises two joints one between the head (6) and the cup (7) and another between the cup (7) and the polyethylene socket (8) the first ceramic-ceramic joint being exposed to most stress. As a result the …
Read the whole patent
Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Filed February 3, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended February 3, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 3, 2019.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.