Atherectomy cutter with a positive attack angle
CA 2077866 C · Owner: Interventional Technologies, Inc. · Inventors: Radisch, Herbert R. Jr.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A rotatable atherectomy cutter is provided with a body and a pair of blade elements. The blade elements are mounted on the periphery of the body and extend distally therefrom in a linearly convergent manner. Each blade element has a flat planar outer face with two linear longitudinally-exposed edges, one of which is defined as the cutting edge and the other of which is defined as the trailing edge. The cutting and trailing edges are positioned at a maximum radial distance from the axis relative to the remainder of the blade element to define the outermost rotation surface of the blade element. Accordingly contact between the blade element and the stenosis is limited to the edges during …
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 9, 1992 and granted June 1, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 9, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 9, 2014.
- 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.