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Cap piercing station for closed container sampling system

A container cover and container technology, applied in the field of piercing table, can solve problems such as unreliable liquid level detection, achieve the effect of reducing movement error and eliminating unreliable liquid level detection

Inactive Publication Date: 2003-09-24
BECKMAN COULTER INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the sampling probe then passes through the cap or bung to reach the sample, it often touches the metal foil and thus causes a volume change, which creates unreliable level detection, causing the system to think the sample is missing before the sampling probe has actually reached the fluid level. The fluid level has reached

Method used

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  • Cap piercing station for closed container sampling system
  • Cap piercing station for closed container sampling system
  • Cap piercing station for closed container sampling system

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Embodiment Construction

[0030] The present invention provides a piercing station for use in a closed container sampling system such as a clinical chemistry analyzer.

[0031] As shown in FIGS. 1 , 2 and 3 , three blades are assembled into a new piercing blade with an H-shaped cross-section, including a first traversing blade 1 , a central blade 2 and a second traversing blade 3 . The central blade 2 has two rows of parallel longitudinal slots for the insertion of two transverse blades 1 and 3, respectively. The crossing blades 1 and 3 are locked in the slot 4 of the central blade 2 to assemble a new piercing blade. When assembled, the central blade 2 lies in a plane perpendicular to the two transverse blades 1 and 3, so that the assembled piercing blade has a modified generally H-shaped cross-sectional configuration. In this configuration, the central blade 2 and the cross blades 1 and 3 are mutually reinforced to form a combined blade assembly which is hard and strong enough to pierce thick rubber ...

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Abstract

A piercing station for piercing sample container caps or thick stoppers. The piercing station has a structural frame with two vertical guide rods. A carriage assembly is slidably mounted on the guide rods and is further driven to move up and down along the guide rods. The carriage assembly carries a blade holder, which in turn holds a piercing blade assembly. The blade assembly includes a center blade and two cross blades interlocked together, such that the blade assembly has a generally modified "H"-shaped cross section for piercing a cap on the sample container. Lubricant left in or on the sample container cap by the piercing station reduces the force required by the sample probe to penetrate thick stoppers for sample aspiration and level sensing. The "H"-shaped cut helps to equalize the pressure in the sample container during sampling, so that clot detection is more effective.

Description

technical field [0001] The present invention relates generally to closed container sampling systems, such as clinical chemistry analyzers, and more particularly to piercing stations for closed container sampling systems. Background technique [0002] Clinical chemistry sampling and analysis systems often use closed containers to hold the samples to be analyzed. One of the main and essential functions of such sampling systems is to pierce the cap or plug on the closed container in which the sample is contained, forming an opening in the cap or plug for subsequent insertion of the sampling probe. The cap piercing function is often performed by the cap piercing station of the sampling system. [0003] In existing sampling systems, cap piercing stations often employ piercing blades having an X-shaped cross-section. Such prior piercing blades having an X-shaped cross-section have been shown to be able to pierce relatively thin caps or stoppers. However, such prior piercing bla...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N1/10G01N1/00G01N35/10
CPCG01N35/1079
Inventor 戴维·L·古德尔威廉·M·罗宾斯史蒂文·P·卡茨曼
Owner BECKMAN COULTER INC
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