Properitoneal mechanical retraction apparatus and methods of using
CA 2109795 C · Owner: Moll, Frederic H. · Inventors: Chin, Albert K.; Gresl, Charles Jr.; Kaufmann, Rick J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A fan retractor (100) has a pair of angle-shaped elements (102A, 102B) moveable relative to one another. The angle-shaped elements include first legs (101A 101B) dis-, posed in a generally parallel relationship and second legs that, extend laterally from the first legs and are adapted for engag-, ing with the abdominal wall. The second legs fan out upon rotation of the first legs relative to one another and have an ef festive thickness, measured in the direction defined by the first legs, that decreases distally from the first legs. The retractor also includes a lifting device (130) that applies a lifting force to the angle-shoped elements. In variations the second legs have, a stiffness …
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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 May 28, 1992 and granted February 11, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 28, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 28, 2014.
- 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.