Abstract: A multiline check valve assembly has an elongated body which defines a fluid passageway and which is formed with a plurality of valve cavities that are in fluid communication with the fluid passageway. Each valve cavity has a resilient valve element disposed within the cavity and each valve element rests in the cavity with one end against a protrusion disposed in the cavity for centering the element within the cavity. The resilient valve element is biased to urge its other end against a valve seat that surrounds an opening to the valve cavity to create a fluid tight seal with the valve seat and close the opening. In addition, an access port is formed circumferentially around both the valve seat and opening to establish a fluid communication path through the access port to the fluid passageway in the body when the valve element is separated from the valve seat.

Abstract: A method for making a hollow fiber separation device including the steps of forming an integral structure which comprises at least one tubular housing portion and an elongated chamber portion extending in elongated relation to the tubular housing portion and communicating with the housing portion adjacent opposed ends thereof. One provides an aperture in a central area of the elongated chamber and inserts hollow fibers for diffusion into the housing portion. One then provides closed ends to the housing portion and spins the structure on an axis between the ends, adding potting compound to the chamber portion through the aperture. Accordingly, the potting compound migrates radially outwardly through the chamber to the closed ends of the housing portion, to encase the ends of the hollow fibers in the potting compound.

Abstract: A collapsible medical agent container (10) is disclosed having walls (34, 36, 38) defining a plurality of chambers (12, 14) for containing selected quantities of one or more medical fluids or a dry or encapsulated drug or other reagent in separate sealed condition. Opening means which communicates between adjacent chambers (12, 14) for passage of fluid from one chamber to another, is normally closed by frangible closure (18) which maintains the chambers (12, 14) in separate hermetically sealed condition until flow between the chambers (12, 14) is needed. The frangible closure (18) has an elongated relatively rigid portion (20) which extends into one of the chambers and is disposed within a protective retentive tube (24), and a relatively weakened portion (22) adjacent the opening means.