Resorbable vascular wound dressings
CA 2199951 A1 · Owner: Li, Shu-Tung · Inventors: Li, Shu-Tung
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention is related to prothese their methods of manufacture and , methods of repairing vascular lesions using such protheses. Natural polymers such as collagen are processed and fabricated to form tubular resorbable vascular wound dressings with unique physico-chemical and mechanical properties for repairing selected vascular segments and for delivering , therapeutic agents at selected sites within vessels and at the anastomoses. The resorbable vascular wound dressings of the present invention have low profile walls at the distal ends as shown in member (21) of the figure.
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 September 14, 1994. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended September 14, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 14, 2016.
- 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.