Tissue dissector apparatus and method
CA 2279661 A1 · Owner: Origin Medsystems, Inc. · Inventors: Chin, Albert K.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Surgical apparatus and method includes a cannula that houses an endoscope and supports a dilating element near a distal end of the cannula. The dilating element has a, dimension which is greater than the diameter of the cannula for enlarging a surgical, cavity in tissue as the cannula is advanced through tissue at a surgical site to provide, working space adjacent a target vessel within which surgical instruments may be, conveniently manipulated. The dilating element of oval sided shape permits surrounding, tissue to be pushed away or otherwise displaced away from the target vessel atraumatically. A locking mechanism is disposed on the cannula which accepts , a, succession of mating …
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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 August 5, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended August 5, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 5, 2021.
- 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.