Closure device for sealing reagent containers in an automatic pipetting system
First Claim
1. A cap member for a reagent container for use in an analysis system with an automatic pipetting device having a pipetting needle for transferring small quantities of at least one reagent from the reagent container to a reaction cell, the cap comprisinga) an outer cylindrical side wall having an inner and an outer surface and having an axis of symmetry parallel to the side wall;
- b) an annular top wall adjacent to the side wall and having a circular aperture; and
c) an inner conical wall with an inner and outer surface adjacent to the top wall tapering inwardly from the aperture in the top wall and away from the side wall along the axis of symmetry, and ending at a tip configured and proportioned to be piercable by the pipetting needle,the cap member being formed as a single piece of plastic material wherein the inner conical wall has a first and second part, the first part forms a first angle with the axis of symmetry and the second part ending in the tip forms a second angle with the axis of symmetry, the second angle being greater than the first angle, wherein the first angle is about 5°
to about 30° and
the second angle is about 20°
to about 60°
with respect to the axis of symmetry.
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0 Petitions
Accused Products
Abstract
A closure or cap for a reagent container for use in an analysis system in which an automatic pipetting device is used for transferring small quantities of reagent from the reagent container to reaction cells. In order to simplify the process of handling the reagent container in an automatic analysis system, the closure is characterized in that it is formed in one piece from a plastic and it has a cylindrical side wall and an annular top wall adjacent the side wall and merging into a conical wall which extends inwards from the inner circle of the top wall and ends in a piercable tip situated on the axis of symmetry of the cylindrical wall.
190 Citations
13 Claims
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1. A cap member for a reagent container for use in an analysis system with an automatic pipetting device having a pipetting needle for transferring small quantities of at least one reagent from the reagent container to a reaction cell, the cap comprising
a) an outer cylindrical side wall having an inner and an outer surface and having an axis of symmetry parallel to the side wall; -
b) an annular top wall adjacent to the side wall and having a circular aperture; and c) an inner conical wall with an inner and outer surface adjacent to the top wall tapering inwardly from the aperture in the top wall and away from the side wall along the axis of symmetry, and ending at a tip configured and proportioned to be piercable by the pipetting needle, the cap member being formed as a single piece of plastic material wherein the inner conical wall has a first and second part, the first part forms a first angle with the axis of symmetry and the second part ending in the tip forms a second angle with the axis of symmetry, the second angle being greater than the first angle, wherein the first angle is about 5°
to about 30° and
the second angle is about 20°
to about 60°
with respect to the axis of symmetry. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A closure device for a reagent container for use in an analysis system with an automatic pipetting device having a pipetting needle for transferring small quantities of at least one reagent from the reagent container to a reaction cell, the closure device comprising
a) a cap member comprising an outer cylindrical side wall having an inner and an outer surface and having an axis of symmetry parallel to the side wall, an annular top wall adjacent to the side wall and having circular aperture, an inner conical wall with an inner and outer surface adjacent to the top wall tapering inwardly from the aperture in the top wall and away from the side wall along the axis of symmetry, and ending at a tip configured and proportioned to be piercable by the pipetting needle, the cap member being formed as a single piece of plastic material, and b) a first sealing means for forming a seal between the cap and the container wherein the inner conical wall of the cap has at least a first and second part, the first forms a first angle with the axis of symmetry and the second part ending in the tip forms a second angle with the axis of symmetry, the second angle being greater than the first angle, wherein the first angle is about 5° - to about 30° and
the second angle is about 20°
to about 60°
with respect to the axis of symmetry. - View Dependent Claims (9, 10, 11, 12, 13)
- to about 30° and
Specification