Patent ID: 6415793
Filing Date: 2002-07-09
Classification: A61M

Abstract:
A dual directional valve for regulating peak inspiratory and expiratory pressures of gases delivered to patients, comprising:a housing fabricated from a material suitable for medical applications having a first leg portion, a second leg portion and a third leg portion, the first and second leg portions defining first and second flow openings respectively, the first and second flow openings defining a passage for gases; a wall sealing the third leg portion to define a chamber within the housing, the chamber being substantially divided from the passage; a valve seat disposed within the housing in communication with the first and second flow openings; a first sealing disc movably mounted within the chamber of the third leg portion and defining an outer periphery larger than the valve seat, said first sealing disc defining at least one venting aperture; a bias member coupled to the wall and the first sealing disc to sealingly engage the first sealing disc and positioned to overlie the valve seat in a rest position; and a second sealing disc sized and mounted to overlie the at least one venting aperture in a rest position, such that when sufficient pressure exists at the first flow opening the first sealing disc moves away from the valve seat to allow gases to exit the second flow opening and when sufficient pressure exists at the second flow opening the second sealing disc deflects away from the at least one venting aperture to allow gases to exit the first flow opening.