Tibial element for a replacement knee prosthesis
CA 2087586 C · Owner: Lawes, Peter · Inventors: Lawes, Peter; Ashby, Alan M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A prosthetic tibial component has a tibial tray having an underside for engaging a prepared tibial plateau. The tibial component has a stem having a tapered connection at one end. The stem has a non-symmetrically shaped bone engagement element extending therefrom. The tray includes a tapered connection element for mating with the tapered connection element on the stem. The tray includes an alignment element for locating and engaging the bone engagement element on the stem to locate the stem at a predetermined position relative to the tibial plateau.
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 January 19, 1993 and granted March 25, 1997. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 19, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 19, 2015.
- 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.