Abstract: A flexible and restorable container main body for housing a medicinal solution. A stopper member is fixed in an inside of a medicinal solution passage that communicates with the container main body for discharging the medicinal solution when the container main body is pressed and deformed. A pressure valve is arranged in the medicinal solution passage at a downstream side in the medicinal solution discharge direction further than the stopper member and is formed with an opening having a circular cross section which contacts a tip portion of the stopper member. A biasing member is provided at a downstream side for biasing the pressure valve in a direction opposite to the medicinal solution discharge direction by abutting against a peripheral portion of the opening of the pressure valve.

Abstract: Provided are a flexible and restorable container main body (1) for housing a medicinal solution; a stopper member (4d; 14d) fixed in the inside of a medicinal solution passage (P) communicated with the container main body (1) for discharging the medicinal solution when the container main body (1) is pressed and deformed; a pressure valve (5) arranged in the medicinal solution passage (P) at a downstream side in the medicinal solution discharge direction further than the stopper member (4d; 14d) being formed with an opening having a circular cross section which contacts the tip portion (4e; 14e) of the stopper member (4d; 14d); and a biasing member (7; 7a) at a downstream side for biasing the pressure valve (5) in a direction opposite to the medicinal solution discharge direction by abutting against a peripheral portion (5b) of the opening of the pressure valve (5).

Abstract: A liquid delivery container comprises a bag 2 which is disposed in a container body 1 to contain a liquid and can expand and shrink or deform freely, a delivery port 3 communicating with the bag 2 and having an outlet hole 31 for discharging the liquid contained in the bag 2, a squeeze portion 6 which is disposed between the delivery port 3 and the bag 2 and is capable of deforming to discharge the liquid through the delivery port when pressed and is restorable, and the check valve 5 disposed on the upstream of the squeeze portion 6 in the discharging direction and regulating the flow of the liquid contained in the bag 2 in one way toward the squeeze portion. When the squeeze portion 6 is pressed, the liquid is discharged through the delivery port 3, and when the pressure is removed, the squeeze portion 6 restores the original shape and at the same time sucks up the liquid from the bag 2.