Bipolar electrosurgical instruments
CA 2121194 A1 · Owner: United States Surgical Corporation · Inventors: Stone, Corbett
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A bipolar electrosurgical instrument is provided having a handle assembly, an elongated body portion and a tool, mechanism. The body portion comprises an outer tubular member and an inner rod member coaxially slidable within the outer tubular member. Attached to a distal end of the body portion is a tool mechanism. The tool mechanism includes pivotally connected jaw members operatively connected to the inner rod member for movement by the handle assembly between open and closed positions. Each jaw member is fabricated from insulating material and is provided with a conductive pathway. The conductive pathways are positioned to permit sparking between the pathways when the jaw members are …
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 13, 1994. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended April 13, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 13, 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.