A thermodilution catheter having a safe, flexible heating element
CA 2129551 C · Owner: Interflo Medical, Inc. · Inventors: Quinn, Michael D.; Yelderman, Mark L.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A thermodilution catheter (100) having a heating filament (400) which is fabricated so as to be thin and flexible enough to avoid contact with the patient's blood. The heating filament is either inserted in a preformed catheter lumen incorporated into a, wall of the catheter body itself or wrapped around the catheter body wall and surrounded by an external sheath (404). Generally the covering of the heating filament is minimally thin so as to allow the heat from the heating filament (400) to be transferred to the surrounding blood and to minimally increase the overal cross-sectional area. Since the heating filament (400) does not directly touch the patient's blood, the outer surface …
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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 February 7, 1992 and granted October 2, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 7, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 7, 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.