Ventricular assist device comprising enclosed-impeller axial flow blood pump
CA 2206644 A1 · Owner: Mongrain, Rosaire · Inventors: Pelletier, L. Conrad; Girard, Alain; Trudelle, Stephane
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to a Ventricular Assist Device (VAD) comprising an axial flow blood pump which can be used as bridge to heart transplantation and as a permanent implant. The pump of the present invention is of an enclosed-impeller axial flow design in, which the rotor comprises impeller blades that intersect at an axis of rotation to form a hub of a relatively small size. The minimization of the hub volume allows a larger internal volume of the rotor to be occupied by the fluid. The pump can also be viewed as a double casing axial flow blood pump in which the permanent magnets required for the DC motor can be embedded in the enclosing tube (rotor) and the motor windings can be …
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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 30, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 30, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 30, 2019.
- 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.