Trocar with universal seal protection
CA 2177830 C · Owner: Applied Medical Resources Corporation · Inventors: Gadberry, Donald L.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A trocar (10) is adapted to provide a working channel (30) across a body wall (12) to accommodate a surgical instrument (41) having a sharp or puncture prone configuration. The trocar (10) includes a cannula (16) and a housing (25) which encloses at least one septum valve (45). A valve adjuster (114) is movable by the instrument (41) from a first position and a relaxed state (Figs. 2 4), to a second, position and an expanded state (Fig. 3) wherein the valve adjuster (114) is disposed at least partially between the instrument (41) and the valve (45). In this second position axial friction is reduced and the valve (45) is protected from the sharp or puncture prone configuration of the …
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 1, 1993 and granted December 30, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 1, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 1, 2015.
- 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.