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Holding device for a pipetting needle

A holding device and holder technology, applied in the direction of instruments, laboratory utensils, analytical materials, etc., can solve the problems of sampling process errors, needle wear, and subsequent sample evaluation errors, and achieve the effect of good support

Active Publication Date: 2014-09-17
SIEMENS HEALTHCARE DIAGNOSTICS PRODS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Here, the displacement of the needle can cause an error in the sampling process and a corresponding error in the subsequent sample evaluation
Furthermore, with a large number of lancing operations, the needles wear out, and therefore the hollow needles need to be replaced periodically

Method used

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  • Holding device for a pipetting needle
  • Holding device for a pipetting needle
  • Holding device for a pipetting needle

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0031] figure 1 A holding device 1 with a first holding part 2 and a second holding part 4 is shown. The first holder 2 has a substantially rectangular and flat basic shape, the protrusion 6 of the blood sample tube extending in the direction of the receiving position (not shown). A groove 10 extends centrally from the protruding part 6 up to the edge 8 of the first holder 2 , which is opposite the protruding part 6 , in which a cylindrical hollow needle 12 is guided. The terms axial and radial used hereinafter both relate to the cylindrical shape of the hollow needle.

[0032] The hollow needle 12 is mounted in two bearing bushes 14 which are arranged in the region of the edge 8 and on the protrusion 6 . A hollow needle 12 extends out of the slot 10 . On one side of the edge 8 there is a connection 15 for a hose to apply pressure or negative pressure into the cavity of the hollow needle 12 . On one side of the protruding portion 6, a hollow needle 12 extends to its end (n...

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PUM

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Abstract

The invention relates to a retaining device (1) for a hollow needle (12) of a pipetting device in an automatic analysis apparatus. The retaining device (1) comprises a first retaining element (2), which can be secured releasably on a base plate that is movable in an automated manner, and a second retaining element (4), which is connected to the first retaining element (2), wherein at least one bearing bushing (14) is provided, which is fixed between the retaining elements (2, 4) and in which the hollow needle (12) is mounted.

Description

technical field [0001] The invention relates to a holding device for a hollow needle used to puncture the cover of a sampling tube in an automatic analysis device. Background technique [0002] Currently, in automatic analysis equipment, also known as in vitro diagnostic system, a large number of detection and analysis methods are carried out automatically in order to determine the physiological parameters of body fluid samples or other physiological samples. [0003] In order to be able to carry out multiple detections in an automated manner, various devices for the spatial transfer of sample containers, reaction containers and reagent containers are required, for example transfer arms with gripping functions, conveyor belts or rotating transfer wheels. In addition, a pipetting device for liquid transfer is provided. The analysis device also includes a control unit, which, with the aid of suitable software, can plan and execute the required analysis work steps in a sequenc...

Claims

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Application Information

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IPC IPC(8): G01N35/00
CPCG01N35/1079B01L3/50825
Inventor 雨果·维尔梅斯
Owner SIEMENS HEALTHCARE DIAGNOSTICS PRODS
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