Abstract: A flow controller can include a conduit wall and a membrane coupled to the conduit wall. The membrane is configured to obstruct gas flow through the conduit. The flow controller includes a membrane controller, positioned adjacent to the membrane, wherein the membrane is positioned on one side of the membrane controller, such that the membrane controller impedes bending of the membrane in a second direction different from the first direction, thereby restricting gas flow through the conduit.

Abstract: A gas flow regulating device including a housing assembly, an inlet tube assembly, and a biasing device. The housing assembly has a main housing, a valve seat body, and a distal plate forming an outlet orifice. The inlet tube assembly includes a proximal inlet end, a tube forming a lumen, and a flange, and is slidably disposed within the main housing, biased to an open state by the biasing device. The flange separates middle and constant pressure chambers within the housing assembly. The inlet tube assembly is transitionable to a closed state in response to pressure in the constant pressure chamber to generate a relatively constant flow rate of air exiting the device via the outlet orifice.

Abstract: A fluid tube is disclosed herein. The breathing circuit tube has a wall which comprises a hollow geometry. The wall defines a passageway with a central longitudinal axis therethrough. The wall is expandable and contractible to adjust a diameter and a length of the passageway. The wall includes one or more corrugations that expand and contract to adjust the diameter and length of the passageway. The corrugations extend between terminal end portions of the wall.

Abstract: A nebulizer dispenser has a T-piece, a body sealingly coupled to the T-piece and configured to contain a liquid medication, and a breathing piece sealingly coupled to the T-piece. The dispenser also has a ball-and-socket joint coupled between the T-piece and either the breathing piece or the body. The ball-and-socket joint allows relative rotational motion of the T-piece in a pitch axis, a yaw axis, and a roll axis.