Patent ID: 8534284
Filing Date: 2013-09-17
Classification: A61M,F01C

Abstract:
1. A device for providing respiratory therapy to a patient during at least a portion of a patient breathing cycle including an inspiratory phase and an expiratory phase, the device comprising: a housing including a patient inlet, an exhaust outlet, a first chamber fluidly disposed between the patient inlet and the exhaust outlet, a second chamber adjacent the first chamber, a first pressurized fluid supply inlet fluidly coupled to the first chamber and a second pressurized fluid supply inlet fluidly coupled to the second chamber; and an interrupter valve assembly associated with the housing and disposed within the first chamber, the interrupter valve assembly including a control port fluidly connecting the patient inlet and the first chamber, and a valve body adapted to selectively obstruct fluid flow through the control port, wherein the interrupter valve assembly further includes a drive shaft carrying the valve body such that with movement of the drive shaft, the valve body selectively covers the control port, and a drive mechanism for moving the drive shaft; and wherein the device is adapted such that fluid flow from the second pressurized fluid supply inlet to the second chamber drives the drive mechanism.