Endometrial ablation apparatus and method
CA 2117900 C · Owner: Vesta Medical, Inc. · Inventors: Stern, Roger A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An endometrial ablation method comprising passing sufficient RF current having a frequency of from 250 kHz to about 100 MHz through substantially the entire surface of the endometrium to heat the endometrium in a single, operation, to a temperature within the range of from 45°C to 90°C and preferably not above 70°C for a time sufficient to destroy the cells of the lining while maintaining the average temperature of the myometrium at a temperature below 42°C. The apparatus comprises an electroconductive expandable member such as a balloon (14) for extending the organ and effecting electrical contact with the endometrial lining to be destroyed. The balloon is connected to power source (30) …
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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 April 22, 1993 and granted August 17, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 22, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 22, 2015.
- 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.