Improved apparatus and method for cryosurgery
CA 2493726 A1 · Owner: Lewis, James D. · Inventors: Lewis, James D.; Myers, David J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An improved apparatus for delivery of cryosurgery fluid in a surgical or other medical environment is disclosed. The preferred apparatus comprises a multiplelayered expanded polytetrafluoroethylene conduit that has a low profile has , low thermal conductivity, and provides exceptional flexibility. A wide variety of treatment instrumentalities may be employed on the end of the conduit to provide medical treatments ranging from direct topical application of cryosurgery fluid to open or closed-system surgical or endosurgical uses.
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 July 31, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 31, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 31, 2025.
- 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.