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

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:
• 1. a pair of inner spaced apart side walls,
• 2. a pair of inner spaced apart end walls,
• 3. an inner top wall,
• 4. an inner bottom wall all joined together with said drain tube extending outwardly therefrom, and
• j. said outer receptacle includes:
• 5. a pair of spaced apart outer side walls in overlapping relationship to said inner side walls,
• 6. a pair of spaced apart outer end walls in overlapping relationship to said inner end walls,
• 7. an outer top wall extending in overlapping relationship to said inner top wall with said supporting means extending through said outer top wall, and
• 8. an outer bottom wall extending in partially overlapping relationship to said inner bottom wall and connected thereto by a peripheral terminal wall portion surrounding said outlet tube.