Self-inflating liquid container for keeping I.V. fluid or blood plasma

Claim 1

A self-inflating liquid container, comprising: a. an inner flexible plastic receptacle for the retention of a liquid such as blood or the like, b. a drain tube connected to the lower end of said inner receptacle, so as to permit the outward flow of the liquid from said inner receptacle, c. supporting means connected to the upper end of said inner receptacle so as to permit the liquid contained therein to exit through said drain tube, d. an outer flexible plastic receptacle substantially surrounding and enclosing said inner flexible receptacle so as to form a chamber therebetween, e. a first unidirectional valve on said outer receptacle for permitting the inward flow of gas into said chamber such that said outer receptacle can be inflated, so as to obtain a force applied to said inner receptacle to air in the outward flow of the liquid from said inner receptacle through said drain tube, f. said supporting means includes a hanger fastened at one end thereof to said inner receptacle and having a portion thereof extending beyond said outer receptacle and in sealed relationship thereto, g. said chamber is initially at or below atmospheric pressure and is inflated by the flow of gas therein to apply a compressive force to said inner receptacle, h. a second unidirectional valve on said outer receptacle for permitting the inward flow of gas into said chamber, i. said inner receptacle includes: