Terumo Kabushiki Kaisha

Shigeaki Fuke

Masaomi Imai

Masafumi Takemoto

Manabu Arinobe

Yasuaki Higuchi

Aiko Horiuchi

Kenji Handa

Yoshihisa Moriyama

Kazunori Goto

A liquid administration device includes: a structure that includes: a cylindrical body including a bottom part in a distal portion and an opening in a proximal portion, a needle tube positioned in the distal portion of the cylindrical body, the needle tube having a sharp needle tip at a distal end, wherein a proximal end of the needle tube is communicable with an inside of the cylindrical body, and a gasket installed in the cylindrical body, the gasket being slidable in an axial direction of the cylindrical body; an operation member configured to perform a pressing operation by pressing the gasket such that a liquid is discharged from the needle tube; a pressing mechanism configured to generate a pressing force for pressing the gasket; and a pressing force transmission inhibiting mechanism configured to inhibit transmission of the pressing force to the gasket during the pressing operation.

Liquid administration device

A liquid administration device includes an inner structure that includes a cylindrical body that has a bottom part in a distal portion thereof and an opening portion in a proximal portion thereof, a needle tube that is mounted in the distal portion of the cylindrical body and has a sharp needle tip at a distal end and a proximal end of which is communicatable with an inside of the cylindrical body, and a gasket that is located in the cylindrical body; an operation member that includes a plunger, the operation member being configured to perform a pressing operation in which the plunger is moved relative to the cylindrical body in a distal direction while being pressed; an engagement portion that includes: a first engagement portion and a second engagement portion.

A liquid administration device includes: a cylindrical body filled with liquid; a needle tube configured to communicate or be communicable with the cylindrical body at its tip side, and to have a sharp needle tip; a gasket configured to slide within the cylindrical body; an operation member configured to to discharge the liquid by pressing the gasket toward the tip direction; a cover member configured to be capable of moving to a first position, in which at least the needle tip is covered, to a second position, in which the needle tip is exposed, and to a third position, in which at least the needle tip is re-covered; and a cover member that can move from the first position to the second position to a third position to re-cover the needle tip.

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Fujinomiya, Japan

Shigeaki Fuke