Heart valve prosthesis
CA 2089081 C · Owner: Olin, Christian · Inventors: Olin, Christian
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A heart valve prosthesis (1) has a substantially annular valve body (2) and two leaflets (3) which are disposed in the valve body (2) and, by means of a hinge mechanism (4 5a, 5b), are pivotable between , an open position and a closed position. The leaflets (3) are substantially semicircular and evenly curved in two perpendicular directions, one direction being perpendicular to the diameter of the semicircle, so as to bulge outward as seen from the centre of , the annulus (2). The leaflet edges (6) closest to the diameter of the semicircle are so curved that they when the valve is closed, are applied against one another along their entire length. Further, two projections (7) are provided …
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 August 9, 1991 and granted May 6, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 9, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 9, 2013.
- 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.