Takeda Chemical Industries, Inc.

Terumi Matsuda

Nobuo Tanaka

Tatsuo Kuwata

Yoshio Washizu

A syringe has a tubular body provided at its front end portion with a portion for mounting an injection needle thereon and opens at its rear end portion so as to have a rear end opening. A gasket for sealing the rear end opening of the tubular body is slidably inserted into the tubular body. A plunger rod is detachably coupled with a rear end portion of the gasket through the rear end opening of the tubular body. A male screw is formed at a front end portion of the plunger rod and is circumferentially alternately divided into at least one male screw portion and at least one first recess portion. A female screw is formed on a rear end face of the gasket and is circumferentially alternately divided into at least one female screw portion and at least one second recess portion. A state where the male screw portion and the first recess portion of the male screw are, respectively, fitted into the second recess portion and the female screw portion of the female screw, the male screw is rotated relative to the female screw so as to be brought into engagement with the female screw such that the plunger rod is coupled with the gasket.

Syringe

A top wall for closing an upper opening of a rectangular frame is formed continuously with an upper edge of a side wall disposed on one side of a row consisting of four side walls. An upper flap having a supporting wall is folded to form one article supporting section on an upper edge of a side wall adjacent to the side wall. A lower flap to which a bonding portion continuous with the upper flap is fixed is formed continuously with the lower edge of the side wall. An upper flap is formed continuously with an upper edge of a side wall disposed on the other side of the row and has a shorter supporting wall. The upper flap is folded to form another article supporting section opposed to the one article supporting section. A lower flap is formed continuously with a lower edge of the side wall. A bonding portion continuous with the supporting wall is bonded to the lower flap. At least one supporting window is defined on each of upper supporting portions and each of the supporting walls.

Growing community of inventors

Nishinomiya, Japan

Terumi Matsuda