Pivoting multiple loop bipolar cutting device
CA 2074431 A1 · Owner: Parins, David J. · Inventors: Parins, David J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An electrosurgical cutting instrument with bipolar electrodes integrally formed into a pivoting ceramic working head. The ceramic head is pivotable about a pivot point by selectively retracting a substantially rigid wire internal to a working element which is slidably and rotatably received within an introducer and connected to a point on the ceramic head offset from a longitudinal axis. Radial incisions are induced into a prostate gland during a transurethral resectioning of the prostate gland (TURP) by applying an RF energy across the bipolar electrodes from an external power source and drawing the electrodes across prostate gland tissue. The pivotal head can be selectively reciprocated …
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 22, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 22, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 22, 2014.
- 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.