Tissue separation cannula with dissection probe and method
CA 2244164 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
A cannula (100) includes a tubular body (102) having a proximal end (104) and distal blunt end (106), at least one lumen (108) extending the length of the body (102), an endoscope (110) having a lighted viewing end (112) disposed in , the lumen (109) near the distal end (106) of the body (102) and a , transparent, tissue separating tip (122) substantially covering the distal end of the body. The tissue separating tip (122) is slightly blunted to inhibit avulsion of tissue and lateral vessels along the dissected cavity formed thereby. Endoscopic viewing through the tip is enhanced by tapering the inner walls thereof to a cusp (120) adjacent the blunt tip in order to reduce visual …
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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 January 24, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended January 24, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 24, 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.