Interventional catheters having differential cutting surfaces
CA 2518497 C · Owner: Youmans, Scott · Inventors: Torrance, Casey; Youmans, Scott; Nistal, Brent
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An interventional catheter incorporates an advanceable rotatable operating , head or cutter assembly (50 72, 80, 120, 140) having one or more distally located differential cutting surfaces (52 74, 82, 124, 145, 154, 164) having , a cant angle of less than 90~ the cant angle being an angle of intersection of the cutting surface and a line tangent to the circumference of the cutter assembly. A fixed blade cutter assembly (50 72, 80, 120, 140) has a plurality , of differential cutting surfaces (52 74, 82, 124, 145, 147, 154, 164) with large ports (68, 125, 143) provided between neighboring differential cutting blades providing access to a sealed lumen and aspiration system. A dual cutter …
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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 March 10, 2004 and granted August 7, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 10, 2024.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 10, 2026.
- 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
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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.