Collapsible solution container

Claim 1

A flexible, collapsible container for medical fluids composed of a flexible, inert, plastic material, said container comprising: a body section of generally flat tubular configuration when empty having a longitudinal axis and a transverse axis shorter than said longitudinal axis, said body section when filled with said medical fluid having a generally transverse oval configuration, said body section further defining front, back, side and opposing side wall portions which are substantially smooth and unencumbered within the confines of said body section, said end wall portions defining a hanger section at one end and a tubular passageway extending from the opposing end, the side wall portions at said one end of said body section tapering in a uniform manner from the outermost dimension of the body section to said hanger section to define shoulder portions with weakened corners between said outermost dimensions at said hanger section, said body section being blow molded from a plastic resinous material with the thickness of the shoulder portions and the side wall portions throughout the longitudinal axis being of a smaller dimension than the front and back wall portions, so that when said container is filled with said medical fluid and supported by said hanger section and the medical fluid is allowed to flow from the opposing tubular passageway, at least one of the side wall portions in the body section adjacent the corners of said hanger section end will assume an opposing inwardly extending pleated configuration which pleated configuration will continue to be formed longitudinally along the body section in the direction of the tubular passageway as the medical fluid is continued to be drained from said container.