Device and method of reducing bias flow in oscillatory ventilators
CA 2474428 A1 · Owner: Dowhy, Mark S. · Inventors: Fuhrman, Bradley P.; Dowhy, Mark S.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A device and method of ventilating a patient reduces the bias flow relative to existing oscillatory ventilators. The device has a gas flow circuit comprising an oscillating line (14), a patient line (25) and an exhalation or a return line (67). A gas supply line (18) and an outlet valve (52) are in pneumatic communication with the gas flow circuit. One or more carbon dioxide scrubbers (38, 68) and one or more check valves (20 42) are provided in the circuit. A , method of ventilating using such a device is also disclosed.
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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 3, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended February 3, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 3, 2025.
- 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.