No straw liquid pouch

Abstract

A flexible tube check valve is introduced within a fluid path for leakage protection from flexible liquid containers. The flexible check valve can be a crossbill valve comprising multiple flexible members that restrict the flow of fluid in a tubular member. The flexible check valve is preferably functionally integrated with the container itself to prevent liquid from exiting a container. Preferably, the flexible check valve is a crossbill valve that is encapsulated within a flexible tube and mechanically attached to the flexible container. Alternatively, the check valve is manufactured as part of the flexible container. Liquid is designed to only flow through when an external compressive force (e.g. users fingers or lips) is applied to the valve. When force is no longer applied to the valve section, the valve returns to its normally closed position and fluid is wholly or substantially prevented from exiting. An alternative medical embodiment uses a flexible tube extension between the flexible liquid container and the flexible tube valve. A coupling connector may be added between the flexible tube extension and flexible tube valve.

1 . A fluid retaining flexible pouch with leakage protection, said pouch comprising: 
 a flexible fluid retaining section;    a fluid withdrawing section, said fluid withdrawing section having a proximate and distal end, said distal end used as an exit for said fluid;    a functionally integrated flexible check valve encapsulated within said fluid withdrawing section, said flexible check valve comprising two or more flexible members oriented in a direction opposite said distal end that are pressed together in a normally closed configuration and prevent unwanted leakage of fluid from said distal end, and    a base section integrated at said proximate end of said fluid withdrawing section comprising a circumferentially extending section which is retained by one or more surfaces of said flexible fluid retaining section.    
   
   
       2 . A fluid retaining flexible pouch as per  claim 1 , wherein said flexible check valve is a crossbill.  
   
   
       3 . A fluid retaining flexible pouch as per  claim 1 , wherein said flexible check valve is a duckbill.  
   
   
       4 . A fluid retaining flexible pouch as per  claim 1 , wherein said flexible check valve is a silicone material.  
   
   
       5 . A fluid retaining flexible pouch as per  claim 1 , wherein said fluid retaining flexible pouch comprises a juice pouch.  
   
   
       6 . A fluid retaining flexible pouch as per  claim 1 , wherein said flexible fluid retaining section is formed by two heat sealed layers.  
   
   
       7 . A fluid retaining flexible pouch as per  claim 6 , wherein said one or more surfaces comprises a multiple layer reinforced section for retaining said base within one of said heat sealed layers.  
   
   
       8 . A fluid retaining flexible pouch as per  claim 6 , wherein said a base section is manufactured directly as part of one of said heat sealed layers.  
   
   
       9 . A fluid retaining flexible pouch as per  claim 6 , wherein said heat sealed layers comprise a foil material.  
   
   
       10 . A medical fluid retaining flexible pouch system with leakage protection, said flexible pouch system comprising: 
 a flexible medical fluid retaining section;    a fluid exit nozzle retained by said flexible medical fluid retaining section;    a fluid conduit having a proximate and distal end, said proximate end operatively attached to said fluid exit nozzle;    a fluid withdrawing section operatively connected to said distal end of said fluid conduit, said fluid withdrawing section having a proximate and distal end, said distal end used as an exit for said medical fluid;    a functionally integrated flexible check valve encapsulated within said fluid withdrawing section, said flexible check valve comprising two or more flexible members oriented in a direction opposite said flexible check valve distal end that are pressed together in a normally closed configuration and prevent unwanted leakage of said medical fluid from said flexible check valve distal end.    
   
   
       11 . A medical fluid retaining flexible pouch system as per  claim 10 , wherein said flexible check valve is a crossbill.  
   
   
       12 . A medical fluid retaining flexible pouch system as per  claim 10 , wherein said flexible check valve is a duckbill.  
   
   
       13 . A medical fluid retaining flexible pouch system as per  claim 10 , wherein said flexible check valve is a silicone material.  
   
   
       14 . A medical fluid retaining flexible pouch system as per  claim 10 , wherein said flexible medical fluid retaining section comprises a saline bag.  
   
   
       15 . A medical fluid retaining flexible pouch system as per  claim 10 , wherein said flexible medical fluid retaining section is formed by two heat sealed layers.  
   
   
       16 . A medical fluid retaining flexible pouch system as per  claim 10 , wherein said fluid withdrawing section is operatively connected by a connector inserted between the distal end of said fluid tube and said proximate end of said flexible check valve.