Flow controller

Details Flow controller Flow controller

1986-12-04

1988-11-15

Coven, Edward M.

Surgery

Respiratory method or device

Means for supplying respiratory gas under positive pressure

12820423, 12820426, A61M 1600

Patent

active

047841303

ABSTRACT:
An oxygen flow controller for use in administering oxygen from a pressure-regulated source on demand to a patient through a nasal cannula is disclosed. A flow path is opened by a solenoid valve in response to the negative pressure created in the nasal canula by the patient's inhalation. The valve is opened for the interval needed to maintain an inhalation to exhalation ration of one-to-two, and the timing cycle and the open and closed duration times of the valve are made to automatically match the patient's breathing.

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Vario Sonic AG-Automatic Flow Control Device (O2-Cannula Controller)-Advertisement Photo's of a Demand Valve by Djon Biermar, which corresponds to the Vario Sonic AG advertisement.

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