Patent ID: 8273070

Claim:
A port member for an infusion solution bag comprising a tubular body portion having one end plugged by a plug member structured to enable a hollow needle to be pierced into the plug member, and a tubular to-be-sealed portion continuously formed with an other end of the body portion and having an inner space communicated with the inside of the body portion, the to-be-sealed portion being held between and sealed to end portions of resin sheets overlapped together to form a bag body having an inner space for accommodation of at least a medicine, the tubular body portion comprising a to-be-plugged portion having a tube shape and being structured to be plugged by the plug member, a connection tube portion having a cylindrical tube shape continuously formed with the to-be-plugged portion and having an inner space communicated with the inside of the to-be-plugged portion, and a deformed tube portion for connection between the connection tube portion and the to-be-sealed portion in communication with each other, the deformed tube portion having a shape changing from a cylindrical shape to a flattened tube shape having a minor axis and a major axis as it advances from one end to the other end, in which the minor axis is smaller than the outer diameter of the connection tube portion, and the to-be-sealed portion thus sealed has a radially flattened shape.