Valve assembly for respiratory systems

摘要

An adapter assembly including a manifold and a valve assembly. The valve assembly includes a seat and a valve body having a circular base and a wall. The wall extends from a trailing side of the base to form a dome-like shape terminating at an end at which a slit is formed, with the wall defining opposing sealing edges at the slit. The seat has an upper circumferential surface and a lower circumferential surface. The upper surface engages a leading side of the base, whereas the lower surface engages a trailing side. At least one of the upper and lower surfaces forms a segment of increased height. Upon final assembly, the valve body is disposed across a passageway of the manifold, with the slit providing a selectively openable path. A force imparted by the segment of increased height flexes the base and biases the sealing edges into engagement.

主权项

1. An adapter assembly comprising:
a manifold comprising and fluidly interconnecting a ventilator port, a respiratory port, and an access port having a circumferential cross section, the access port comprising a valve seat that has an upper circumferential surface and a lower circumferential surface; and a valve assembly coupled to the access port, the valve assembly comprising a circular base with a substantially planar upper surface in contact with the upper circumferential surface of the valve seat and a lower surface in contact with the lower circumferential surface of the valve seat and a wall extending from the base with a slit that is formed through the wall with opposing sealing edges, wherein two circumferentially discontinuous portions are on the upper surface at opposing sides of the slit, each forming a segment of increased height from the planar surface, the discontinuous portions contact the upper circumferential surface of the valve seat and bias the opposing sealing edges into engagement.