System and method of treating abnormal tissue in the human esophagus
CA 2825425 C · Owner: Covidien Lp · Inventors: Stern, Roger A.; Ganz, Robert A.; Zelickson, Brian D.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An ablation catheter system and it's use is provided to endoscopically access portions of the human esophagus experiencing undesired growth of columnar epithelium. The ablation catheter system and method includes controlled depth of ablation features and use of either radio frequency spectrum non-ionizing ultraviolet radiation, warm fluid or microwave radiation which may also be accompanied by improved sensitizer agents.
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 16, 2000 and granted March 22, 2016. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 16, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 16, 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.