An electrical insulation testing device and method for electrosurgical instruments
CA 2286044 C · Owner: Morris, James R. · Inventors: Morris, James R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A device (10) suitable for testing the integrity of insulation coating an electrosurgical instrument (30) is described. The device includes a test sleeve (14) and a fault detection unit (12). The test sleeve (14) is generally tubular and defines an open bore with a resilient conductive lining (52) mounted therein. The fault detection unit (12) is coupled to the conductive lining (52) such that establishment of an erroneous current path between the conductive lining (52) and an electrosurgical device (30) is detected.
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 8, 1998 and granted May 28, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 8, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 8, 2020.
- 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.