Apparatus for providing enhanced tissue fragmentation and/or hemostasis
CA 2075902 C · Owner: Kuhl, Peter Joseph · Inventors: Broadwin, Alan; Kuhl, Peter Joseph; Logan, Joseph Nicholas
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An improved devices for delivering RF current to the operating tool (6) of an ultrasonic surgical apparatus which comprises a switch module for selecting said RF current an electrically conducting metal band (18) connected to the switch module and an electrically conductive O-ring (19) in electrical contact with the metal band and located around the acoustic connecting member (5) of the apparatus.
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 March 27, 1991 and granted March 31, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 27, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 27, 2013.
- 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.