Fragmentable ring applier
CA 2106932 A1 · Owner: Robertson, John Charles · Inventors: Vanleeuwen, Timothy O.; Robertson, John Charles; Gerry, Stephen W.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A novel surgical instrument suitable for insertion and assembly of multi-ring compression devices for circular anastomosis of tubular tissue sections including a body having means to support and align the rings means for, clamping the rings around the free ends of the tissue sections, means for coring away excess clamped tissue and the centers of the rings, separate means for releasing the clamped rings from the instrument and dwell means to delay releasing the rings until after the coring operation is complete. The dwell means consists of an external cap containing separate and coaxial elements for the coring means and the releasing means which are provided with a series of recesses and a …
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 September 24, 1993. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended September 24, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 24, 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.