Seal member for surgical trocar
CA 2312801 A1 · Owner: Phillips Plastics Corporation · Inventors: Peterson, Francis
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention is directed to an apparatus for use in internal surgical procedures, more particularly, an apparatus for use in laparoscopic surgical procedures providing a simple and cost effective sealing mechanism within a cannula which readily accepts the repeated insertion and removal of surgical instruments through the seal without permitting escape of gases through the seal. In one particular embodiment, the apparatus consists of a rigid tube having an inner surface defining a hollow channel and a flexible sleeve located within the hollow channel forming an inner channel within the hollow channel where the flexible sleeve is sufficiently elastic to close the inner …
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 December 9, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 9, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 9, 2020.
- 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.