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Pipetting needle cleaning method and device and sample analyzer

A technology for cleaning devices and pipetting needles, applied in cleaning methods and utensils, chemical instruments and methods, cleaning hollow objects, etc., can solve problems such as affecting test results, incomplete cleaning, etc., to avoid cross-contamination, cleaning thoroughly, and large Effect of cleaning range

Active Publication Date: 2019-11-08
MACCURA MEDICAL INSTR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to prevent carryover contamination, the pipetting needle needs to be cleaned after each suction and discharge of the target liquid. However, the pipetting needles in the prior art often have problems of incomplete cleaning, which may affect the detection results due to cross-contamination.

Method used

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  • Pipetting needle cleaning method and device and sample analyzer
  • Pipetting needle cleaning method and device and sample analyzer
  • Pipetting needle cleaning method and device and sample analyzer

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Embodiment Construction

[0042] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0043] refer to figure 1 and figure 2 As shown, when performing fluid simulation for the cleaning process of the pipette needle, it is found that the waterfall cleaning has the problem of incomplete cleaning of part A of the front surface, such as figure 1 As shown, there are cleaning liquid dead angles in the front end face A part and the side wall part where the water flow meets. refer to figure 2 As shown, it can also be seen that in the part of the fr...

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PUM

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Abstract

The invention discloses a pipetting needle cleaning method and device and a sample analyzer. The pipetting needle cleaning method comprises the steps that a cleaning fluid is guided into a pipetting needle to clean the inner wall of the pipetting needle; a cleaning fluid is sprayed to the outer wall of the pipetting needle through liquid spraying holes in a cleaning tank to clean the outer wall ofthe pipetting needle; and the pipetting needle performs reciprocating motion in the washing range of the cleaning fluid to clean the front end surface of the pipetting needle. The pipetting needle cleaning method can be applied to a reagent needle with a repeated puncturing function, adopts waterfall type cleaning, can effectively prevent the front end surface of the pipetting needle from forminga cleaning dead angle while having the large cleaning range, ensures thorough cleaning, avoids cross contamination, and ensures the accuracy and reliability of a sample analyzer detection result.

Description

technical field [0001] The invention relates to the technical field of in vitro diagnosis, and more specifically relates to a cleaning method, device and sample analyzer for a pipetting needle. Background technique [0002] In the field of in vitro diagnostics, pipetting needles for aspirating samples or reagents are commonly used parts. In order to prevent carryover contamination, the pipetting needle needs to be cleaned after each suction and discharge of the target liquid. However, the pipetting needles in the prior art often have incomplete cleaning, which affects the detection results due to cross-contamination. [0003] To sum up, how to clean the pipetting needle to ensure thorough cleaning, avoid cross-contamination, and ensure the detection accuracy of the sample analyzer is an urgent problem to be solved by those skilled in the art. Contents of the invention [0004] The object of the present invention is to provide a method for cleaning a pipette needle, so as ...

Claims

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Application Information

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IPC IPC(8): B08B9/02B08B9/023B08B9/032
CPCB08B9/02B08B9/021B08B9/023B08B9/0321
Inventor 张业祥王炼陈佳
Owner MACCURA MEDICAL INSTR CO LTD
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