Valved fenestrated tracheotomy tube having outer and inner cannulae
CA 2559804 C · Owner: Quinn, Bradley H. · Inventors: Quinn, Bradley H.; Blom, Eric D.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A tracheotomy tube apparatus includes an outer cannula having first and second ends and a fenestration along the length of the outer cannula between the first and second ends. The apparatus further includes a first inner cannula sized for insertion into the outer cannula. The first inner cannula has a raised region substantially to close the fenestration when the first inner cannula is inserted into the outer cannula. The apparatus further comprises a second inner cannula for insertion into the outer cannula when the first inner cannula is removed therefrom. The second inner cannula includes a resilient region which lies adjacent the fenestration when the second inner cannula is properly …
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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 September 15, 2006 and granted November 26, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 15, 2026.
- Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
- 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.