Electrosurgical stapling device
CA 2128136 C · Owner: Mersch, Steven H. · Inventors: Kuhns, Jesse J.; Mersch, Steven H.; Yates, David C.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An surgical stapling instrument is provided which uses a thermogenic energy preferably bipolar radiofrequency energy for cauterization and/or welding tissue. The instrument compresses tissue between one pole of a bipolar energy sources contained on a first interfacing surface and a second pole of a bipolar energy source contained on a second interfacing surface. Staples and thermogenic energy are applied to the compressed tissue. In a preferred embodiment a cutting means for cutting tissue is incorporated into the instrument.
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 July 15, 1994 and granted October 26, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 15, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 15, 2016.
- 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.