Instillation container with level-difference portion
The present invention relates to an eyedropper including a container unit (A) made of a thermoplastic material and a cap (B) which can be screwed onto the container unit, wherein a tubular fluid instilling portion ( 6 ), which is provided at a tip of the container unit, is depressed into a bottomed...
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| Main Authors | , |
|---|---|
| Format | Patent |
| Language | English |
| Published |
21.10.2004
|
| Online Access | Get full text |
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| Summary: | The present invention relates to an eyedropper including a container unit (A) made of a thermoplastic material and a cap (B) which can be screwed onto the container unit, wherein a tubular fluid instilling portion (
6
), which is provided at a tip of the container unit, is depressed into a bottomed conical concave portion (
6
b
) whose internal diameter expands towards its tip side, and a instilling hole (
6
c
) is formed or can be formed in the bottom portion of this concave portion, and wherein the cap (B) is provided with a first convex seal portion (
15
), which, in a mounted condition, seals the concave portion (
6
b
) of the container unit (A). It is an object of the present invention to provide an eyedropper that will improve further the sealability between the cap and the container unit when the cap is screwed onto the container unit, and with which an appropriate single drop delivery volume can be set. To solve this problem, according to the present invention, an outer circumferential region of the tubular fluid instilling portion (
6
) is provided with a step portion (
8
a
) where the outer diameter of the container unit (A) is smaller on the tip side, and, on the tip side of the step portion (
8
a
), with a tip protruding portion (
8
b
) whose outer diameter is substantially not reduced or changed towards the tip, and the cap (B) is provided with a second convex seal portion (
16
), which, in the mounted condition, is in close contact with the tip protruding portion (
8
b
) and the step portion (
8
a
). |
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