Vessel sealer and divider for use with small trocars and cannulas
CA 2528919 C · Owner: Sherwood Services Ag · Inventors: Garrison, David Mcmurray
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A bipolar forceps for sealing and dividing tissue includes a housing having a shaft affixed thereto. The shaft includes first and second jaw members attached to the distal end thereof which are movable relative to one another from a first spaced apart position to a second position for grasping tissue. At least one of the jaw members includes a knife channel disposed substantially along the length thereof. The knife channel has a depth a width , and an aspect ratio which is defined as the depth of the knife channel divided by the width of the knife channel. Preferably the aspect ratio of the knife channel is at least 1.3. The forceps is connected to a source of electrosurgical energy …
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 June 13, 2003 and granted February 28, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 13, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 13, 2025.
- 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.