Santen Pharmaceutical Co., Ltd.

Yukio Kusu

Yoichi Kawashima

Hiroshi Yamada

An eyedropper including a container and a cap which can be screwed onto the container unit wherein a tubular fluid instilling portion is provided at a tip of the container. An outer circumferential region of the tubular fluid instilling portion is provided with a step portion where the outer diameter of the container is smaller and whose outer diameter is substantially not reduced or changed moving towards the tip. The cap is provided with a convex seal portion, which, in the mounted condition, is in close contact with the tip and the step portion.

Instillation container with level-difference portion

A bottomed conical hollowis formed in a tip end of the container body A formed of a thermoplastic material with a liquid filled and sealed therein simultaneously during the molding process, the hollow having an inside diameter enlarging toward the tip end, and a small-diameter instilling holeis penetrated through the bottom of the hollowfor controlling, at a set quantity, the liquid pushed out of the container body A.

Open instillation container and method of manufacturing the container

In an eye drops container, a barrel portionin the form of a flexible hollow cylinder defines a dent portionwhich can be gripped with two fingers.

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Osaka, Japan

Yukio Kusu