Malleable cryosurgical probe
CA 2460739 C · Owner: Eum, Jay J. · Inventors: Eum, Jay J.; Battles, David J.; Yu, Xiaoyu
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The malleable cryosurgical probe (10) includes a cryostat assembly and a cryoprobe assembly. The cryostat assembly includes an elongated shaft assembly (12) having at least one malleable segment (28) thereof and a closed distal end (34). The shaft assembly includes at least one freezing portion at least , one thermally insulated portion and a thermally insulating element positioned about the thermally insulated portion. A cryostat (14) is operably associated with the elongated shaft assembly. It includes a cryostat inlet (42) for receiving gas entering the cryostat, a cryostat outlet (44) and a heat exchanger (40) positioned between the cryostat outlet and the cryostat inlet. The …
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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 September 19, 2002 and granted January 28, 2014. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 19, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 19, 2024.
- 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.