Therapeutic Gas Delivery Device With Pulsed And Continuous Flow Control

摘要

Described are methods and devices for therapeutic or medical gas delivery that utilize at least one proportional control valve and at least one binary control valve. The proportional control valve may be in series with the binary control valve to provide a valve combination capable of pulsing therapeutic gas at different flow rates, depending on the setting of the proportional control valve. Alternatively, the proportional control valve and binary control valve may be in parallel flow paths.

主权项

1. A therapeutic gas delivery device comprising:
an inlet to connect to a source of therapeutic gas; an outlet to connect to a device that introduces the therapeutic gas to a patient; at least one binary control valve in fluid communication with the inlet and outlet that delivers a constant flow of the therapeutic gas; at least one proportional control valve in fluid communication with the inlet and outlet that delivers a variable flow of the therapeutic gas; and a control system that delivers the therapeutic gas through one or more of the binary control valve and the proportional control valve.