Patent ID: 8157783

Claim:
A medical liquid container having a plurality of communicatably partitioned medical liquid-housing chambers and a discharge reserve chamber having formed therein a discharge port for a liquid medicament, the medical liquid container comprising liquidtightly partitioning portion for liquidtightly separating said liquid medicament-housing chambers from each other, and non-liquidtightly partitioning portion for non-liquidtightly separating between at least one of said liquid medicament-housing chambers and said discharge reserve chamber, and wherein said non-liquidtightly partitioning portion is a peelable seal, an isolation membrane rupturable by a pressure rise in a liquid medicament-housing chamber, or a blocking plug capable of blocking or unblocking the communication opening, each having a pore hole allowing for leaking and flowing of a slight amount of said liquid medicament into said discharge reserve chamber, and wherein a leakage rate for the slight amount of said liquid medicament has an upper limit, which is a leakage rate insufficient as a dosage per hour for the administration of the mixed liquid medicament to the patient, and a lower limit, which is a leakage rate of giving a liquid amount large enough to put the discharge reserve chamber and the discharge port into a sterility assurance level equal to the sterility assurance level of a first liquid medicament-housing chamber or a second liquid medicament-housing chamber when high-pressure steam sterilization is performed under conditions of guaranteeing a sterile state of the first liquid medicament-housing chamber and the second liquid medicament-housing chamber, wherein when the second liquid medicament-housing chamber is pressed, said non-liquidtightly partitioning portion does not yield a communicated state by such a pressure rise in the liquid medicament-housing chamber as causes said liquidtightly partitioning portion to start allowing for communication.