Improved cannula
CA 2517876 C · Owner: Thoratec Corp. · Inventors: Alder, Anthony Philip; Woodard, John Campbell; Ayre, Peter Joseph
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A cannula (3) for the transport of blood; wherein the cannula comprises an elongate, flexible tubular shank (2) defining a blood channel (5) therethrough between a first end and a second end. The shank adapted to be clamped to occlude said blood channel (5) without substantially damaging the shank. The shank being resistant to kinking stresses.
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 19, 2004 and granted January 3, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 19, 2024.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 19, 2026.
- 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.