Calcification mitigation of bioprosthetic implants
CA 2046592 C · Owner: Carpentier, Alain · Inventors: Carpentier, Sophie; Nashef, Aws; Carpentier, Alain
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Calcification resistant bioprosthetic implants are made from tanned biological materials, such as porcine heart valves bovine pericardium, human dura mater or the like which has been, impregnated with a calcification-mitigating effective amount of a ferric and/or stannic salt, and having been treated with one or more diamines in combination with one or more activating factors. The impregnated biological materials and processes are particularly advantageous for the preparation of bioprosthetic heart valves. These implants have been found to be highly resistant to calcification in vivo.
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 1, 1990 and granted May 2, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 1, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 1, 2012.
- 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.