VENTILATORY SUPPORT DEVICES FOR USERS WITH RESPIRATORY DISTRESS

Abstract: a device for delivering at least one gas to a user is described herein. the device includes a body defining: a chamber to receive the gas, an inlet leading into the chamber and an outlet for the user to draw the gas from the chamber. the device also includes a demand valve assembly configured to supply the gas to the chamber. the demand valve assembly includes an intake block, at least one demand valve coupled to the intake block and an actuator positioned within the chamber and coupled to the demand valve. the actuator is configured to move the demand valve into an open position to supply gas to the chamber. the device also includes a diaphragm assembly. the diaphragm assembly includes a diaphragm membrane abutting the actuator and movable downwardly relative to the body when the user draws the gas from the chamber to supply gas to the chamber.

Inventor(s): Neil David Wainwright, Erik Kolbjorn Lloyd, Shafique Keshavjee, Marcelo Cypel, Raymond Paul Joseph Janisse

CPC Classification: A61M16/12 (by mixing different gases)

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