Stentless heart valve and holder
CA 2086515 C · Owner: Nguyen-Thien-Nhon, Diana · Inventors: Cosgrove, Delos M.; Quintero, Lillian J.; Nguyen-Thien-Nhon, Diana
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A stentless aortic heart valve(13) having a disposable holder(55) with removable handle(71) attached can be manually reversed by the physician during suturing to provide a relatively unobstructed view into the patient's aorta. A covering (32) applied to strategic regions on the exterior and interior of the device provides a firm ground for suturing the prosthetic heart valve into position and, for attaching the detachable holder.(55)
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 29, 1991 and granted December 2, 1997. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 29, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 29, 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.