Autoperfusion dilatation catheter
CA 2131376 C · Owner: Medtronic, Inc. · Inventors: Anderson, R. David; Gurbel, Paul A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An autoperfusion dilatation balloon catheter useful in angioplasty comprises a catheter shaft (1) and mounted on said, shaft (1), an inflatable non-elastomeric balloon (2) having proximal and distal ends disposed along the length of said catheter shaft (1), said balloon (2) when inflated having an outer surface relief-structure whereby when said balloon (2) is fully inflated and exerts pressure on the inner surface of a blood vessel (4) in which blood is flowing blood continues flowing between said, outer surface of said balloon (2) and said inner surface of said blood vessel (4).
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 March 12, 1993 and granted May 5, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 12, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 12, 2015.
- 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.