Heart failure mask and methods for increasing negative intrathor

Details Heart failure mask and methods for increasing negative intrathor Heart failure mask and methods for increasing negative intrathor

1996-11-12

1998-03-24

Asher, Kimberly L.

Surgery

Respiratory method or device

Face mask covering a breathing passage

12820525, 12820621, A62B 1810, A62B 1802

Patent

active

057301220

ABSTRACT:
The invention provides methods and devices for treating a patient suffering from heart failure. According to one exemplary method, a facial mask is sealed around the patient's mouth and nose, with the mask including a one-way expiration valve and an inspiratory threshold valve. The threshold valve is biased to open when a threshold pressure within the mask is in the range from about -3 cm H.sub.2 O to about -25 cm H.sub.2 O. With this arrangement, the patient breathes while the mask is sealed to the face, with the respiratory gasses being prevented from entering the patient's lungs during inhalation until the patient produces a pressure within the mask that is within the range from about -3 cm H.sub.2 O to about -25 cm H.sub.2 O. At this point, the inspiratory valve opens to allow respiratory gasses into the lungs.

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