Apparatus for use in central vein cannulation
CA 2081993 C · Owner: Henry, Richard Anthony · Inventors: Henry, Richard Anthony; Shelley, Stevenson
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Apparatus for central vein cannulation that includes a valved Y-connector for use between a conventional syringe and introducer needle. The valve is in an auxiliary arm and removably receives an end portion of a length of flexible tubing so that venous pressure can be visually observed during the medical procedure and then removed for insertion of a J-wire through the same valve by a conventional J-wire dispensing system.
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 November 3, 1992 and granted July 29, 1997. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 3, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 3, 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.