Method and apparatus for cryosurgery
CA 2258619 A1 · Owner: Julian, Thomas Benjamin · Inventors: Wolmark, Norman; Julian, Thomas Benjamin; Rabin, Yoed
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention pertains to an apparatus for cryosurgery. The apparatus comprises a cryo-needle (1) having a diameter less than 3.2 mm. The apparatus is also comprised of a thermal insulation shell (5) disposed about a portion of the cryo-needle for reduction of heat transfer from surrounding tissues or , freezing prevention of surrounding tissues during application of the cryoneedle with the shell. The cryo-needle and shell are configured for insertion into a body of a patient. The present invention pertains to a method for freezing tissues. The method comprises the steps of bringing into contact a cryo-needle having a diameter of less than 3.2 mm with a patient's body. Next …
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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 June 20, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 20, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 20, 2019.
- 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.