Improved method and apparatus for reducing friction and heat generation by an ultrasonic device during surgery
CA 2214566 C · Owner: Mackool, Richard · Inventors: Mackool, Richard
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A surgical instrument for removing tissue such as a cataract, from a , patient's body includes a hollow, vibrating needle surrounded by one or two hollow infusion sleeves. Reducing friction between the surfaces of the sleeves and the outer surface of the needle, and/or surrounding ocular tissue dramatically, reduces the amount of heat generated during surgery thus reducing the, possibility of thermal damage to tissue.
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 March 6, 1996 and granted August 14, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 6, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 6, 2018.
- 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.