Blood oxygenator with heat exchanger
CA 2241366 C · Owner: Medtronic, Inc. · Inventors: Elgas, Roger J.; Gremel, Robert F.; Hamlen, Robert C.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A generally cylindrical membrane-type fiber bundle blood oxygenator (10) concentrically surrounds a generally cylindrical blood heat exchanger. Heat transfer fluid flows downwardly from the upper end of the heat exchanger around outside surfaces of the fiber bundle (26). A blood inlet manifold (18) at the lower end of the heat exchanger includes an inlet nozzle (30) and a generally conical wall (60). A transition manifold (24) at the upper end of the heat exchanger directs blood to the upper end of the oxygenator fiber bundle (28). The transition manifold (24) includes a generally conical wall (96) defining a surface which spreads the blood substantially uniformly around the upper …
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 January 7, 1997 and granted January 1, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 7, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 7, 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.