Swirling system for ionizable gas coagulator
CA 2320652 C · Owner: Sherwood Services Ag · Inventors: Platt, Robert
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An electrosurgical apparatus for coagulating tissue includes an elongated flexible tube having a proximal end a distal end, and at least one aperture located therein. The proximal end of the tube receives a supply of pressurized ionizable gas and is disposed within a working channel of the endoscope. At least one electrode ionizes the gas exiting the aperture of the tube and an agitator causes the gas to exit the tube with predetermined flow characteristics. In one embodiment the agitator includes a helically-shaped baffle disposed within the tube. In another embodiments the agitator can include a rotatable baffle having apertures disposed therethrough for causing the gas to exit the tube …
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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 September 25, 2000 and granted January 11, 2011. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 25, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 25, 2022.
- 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.