Radiofrequency ablation with phase sensitive power detection
CA 2106409 A1 · Owner: Stern, Roger A. · Inventors: Edwards, Stuart D.; Stern, Roger A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Systems for ablating tissue control radiofrequency power to an ablation electrode (16) by relying upon actual phase sensitive power measurements (72), unaffected by phase shifts between radiofrequency voltage and current. The systems also detect these phase differences (70), if they develop and integrate this factor (30) in making their control decisions.
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 November 5, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 5, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 5, 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.