Patent ID: 7935101

Claim:
A medical bag, comprising: a first flexible film; a second flexible film; at least one peripheral non-separable weld that welds a peripheral portion of the first flexible film to a peripheral portion of the second flexible film to define a chamber for holding a medical composition; an outlet port mounted to the medical bag for discharging the medical composition from the chamber; at least one separable weld that welds a first interior portion of the first flexible film to a first interior portion of the second flexible film to define at least a first partition, a second partition and a third partition within the chamber; and at least one interior non-separable weld that welds a second interior portion of the first flexible film to a second interior portion of the second flexible film; wherein: the first partition holds a first medical liquid; the second partition holds a second medical liquid; the outlet port communicates between the third partition and an exterior of the medical bag; the at least one separable weld comprises a first section separating the first partition from the second partition; the at least one separable weld comprises a second section separating the first partition from the third partition; the at least one separable weld comprises a third section separating the second partition from the third partition; the at least one interior non-separable weld is provided in proximity to the second and third sections of the at least one separable weld, so that when the medical bag is deformed, the first section of the at least one separable weld breaches before the second and third sections, allowing the first and second medical liquids to mix before contacting the outlet port; the first section of the at least one separable weld extends from a first location on the exterior separable weld to an interior location of the chamber opposite from the outlet port; the second section of the at least one separable weld extends from the interior location of the chamber opposite from the outlet port to a second location on the exterior separable weld adjacent to the outlet port; the third section of the at least one separable weld extends from the interior location of the chamber opposite from the outlet port to a third location on the exterior separable weld adjacent to the outlet port; the second and third locations on the exterior separable weld are astride the outlet port; and the at least one interior non-separable weld comprises a first interior non-separable weld adjacent to the second section of the at least one separable weld and a second interior non-separable weld adjacent to the third section of the at least one separable weld.