Bearing and seal-free blood pump
CA 2271833 C · Owner: Izraelev, Valentin M. · Inventors: Izraelev, Valentin M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A pump (10) for transferring fragile and aggressive liquids such as human blood and comprising a pumping chamber (12) along with a pair of fluid inlet ports (16, 17) arranged in oppositely disposed relationship on the chamber and one or more outlet ports (18, 19) arranged transversely and medially of the inlet ports. A rotor (20) is positioned within the pumping chamber having a dual-conical configuration converging toward opposed polar end regions (21 22) and with an axis of rotation extending between the polar regions. The rotor includes magnets (24) which are arranged at radially spaced locations and with a magnetic drive positioned to deliver rotational driving energy to the …
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 April 14, 1997 and granted December 2, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 14, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 14, 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.