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. A method of connecting a respiratory device to an artificial airway, the method comprising:
providing a valve seat in an access port of a manifold, the valve seat having an upper circumferential surface and a lower circumferential surface; retaining a valve assembly via the valve seat, the valve assembly including:
a base with a substantially planar upper surface contacting the upper circumferential surface of the valve seat and a lower surface contacting 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 upper surface, the circumferentially discontinuous portions contacting the upper circumferential surface of the valve seat and forcing the opposing sealing edges into engagement; connecting the manifold within a breathing circuit that fluidly connects a respiratory device to an artificial airway.