Catheter with electrosurgical cutter
CA 2103593 C · Owner: Clayman, Ralph V. · Inventors: Clayman, Ralph V.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A catheter assembly (10) which permits simultaneous dilatation and incision of tissue whereby trauma and damage to the tissue due to uncontrolled tearing is reduced or eliminated comprising an elongated tubular body (13) having a distal end that carries a dilatation balloon (15) and cutting element (17) carried on the exterior of the balloon and that moves radially in concert with the exterior of the bladder as the bladder is inflated and deflated. A radiofrequency current is directed through the cutting element (17) to incise proximate tissue. Pressure can be applied to the tissue prior to cutting to facilitate separation and subsequent to cutting to inhibit bleeding.
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 January 28, 1992 and granted July 30, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 28, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 28, 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.