Improved multiple cannula systems and methods
CA 2524857 C · Owner: Horton, Duane L. · Inventors: Brackney, Steven M.; Horton, Duane L.; Thomas, Ralph
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A multiple cannula assembly for insertion into a patient comprise a flexible outer cannula having a proximal head including a connector and at least one ridge , and having a stiffer tip portion and a stepped portion configured to reduce an outward , bulge of a cuff. A flexible inner cannula having a proximal hub includes at least one , protrusion engageable with the at least one ridge. The inner cannula is longitudinally , insertable into the outer cannula to an insertion position with the hub proximate the , head. The flexible inner cannula is made with PTFE and the inner cannula hub is , rotatable to a locked position with the at least one protrusion under the at least one , ridge …
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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 May 6, 2004 and granted October 14, 2014. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 6, 2024.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 6, 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.