Electrosurgical electrode
CA 2082622 C · Owner: Applied Urology, Inc. · Inventors: Buelna, Terrence J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In accordance with an embodiment of the present invention an improvement is set forth in an electcosurgical electrode having a conductor (20) From which a radio frequency electrical signal is generated which signal sparks to and performs a surgical procedure upon the tissue adjacent the conductor (20) and is received by a receiver: The improvement comprises a dielectric sheath (22) surrounding the conductor (20) in the region where the surgical procedure is being performed, the sheath (22) having a slit (24) extending longitudinally along it in the region exposing only a portion of the lateral surface (26) of the conductor (20).
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 April 25, 1991 and granted May 1, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 25, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 25, 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.