Cryopreserved homografts and other stentless bioprosthetic heart valves having natural tissue sewing rings
CA 2360559 A1 · Owner: The Brigham & Women'S Hospital, Inc. · Inventors: Adams, David H.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
This invention is a pre-trimmed, cryo-preserved homografts and other non-stent bio-prosthetic heart valves having natural tissue sewing rings (14A) formed thereon. The sewing ring (14A) may be formed of a strip of pericardium or other suitable tissue. Material may be captured between the natural tissue sewing ring, and a sub-valvular lip formed on the valve to impart a desired size or shape to the sewing ring. In the case of cryo-preserved embodiments of the invention (e.g. cryo-preserved human homografts) the sewing ring (14A) is attached to the valve by way of a natural tissue suture (34) biological glue , or other attachment component that is capable of undergoing …
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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 18, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended January 18, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 18, 2022.
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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.