Drug delivery ptca catheter and method
CA 2176753 C · Owner: Schneider (Usa) Inc. · Inventors: Goodin, Richard L.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An intravascular material delivery dilation catheter ( 10) having a pair of longitudinally spaced inflatable balloons (20 22) with a drug, delivery region (26) defined therebetween. The catheter is ideally suited for use after a PTCA procedure wherein the proximate balloon (20), seals the blood vessel while the distal balloon (22) is uniquely contoured when inflated to define fluid communication paths (60) therepast and proximate a blood vessel (54) to be treated. The distal balloon (22) when inflated, has four lobes but could also be textured. Each lobe is separated from the next by a groove which groove in combination with the blood vessel inner wall forms a fluid communication path …
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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 October 14, 1994 and granted October 3, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 14, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 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.