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Sampling device and method

A technology of sampling equipment and sampling needles, applied in sampling devices, measuring devices, instruments, etc., can solve the problems of high cost, undetectable, large amount of remaining liquid, etc., and achieve the effect of reliable sampling

Active Publication Date: 2010-11-10
SHENZHEN MINDRAY BIO MEDICAL ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This method needs to add a whole set of pressure detection system, the cost is high, and it can only be detected during the process of absorbing liquid, and it cannot be detected when the amount of liquid absorbed is slightly less than the target value
[0008] 3. Set a certain height limit to ensure sufficient liquid absorption. This method will cause a large amount of remaining liquid, and put forward requirements for mechanical related design

Method used

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  • Sampling device and method

Examples

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Embodiment Construction

[0053]Below in conjunction with accompanying drawing, preferred embodiment of the present invention is described in further detail:

[0054] Such as figure 1 As shown, a sampling device includes: a sampling needle 400, an action module 300 for driving the action of the sampling needle 400, a control module 200 for controlling the action module 300, and a control module 200 for monitoring the sampling needle 400 related physical quantities change, and convert the physical quantities into corresponding electrical signals to the detection module 100 of the control module 200 .

[0055] Wherein, the control module 200 processes the electrical signal output by the detection module 100 and controls the action module 300 accordingly.

[0056] Such as figure 2 Shown is a more specific embodiment of the sampling device of the present invention.

[0057] Wherein, the sampling needle 400 is installed on the rocker arm 330 , and the rocker arm 330 is driven by the stepping motor 320 ....

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PUM

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Abstract

The invention relates to a sampling device and a method. The sampling method comprises the following steps that: preparation of sampling: a sampling pin (400) acts towards a liquid surface until relevant physical quantity of the sampling pin (400) is mutated, and the sampling pin is judged to whether contact the real liquid surface; if the real liquid surface is contacted, sampling steps is carried out: the sampling pin (400) absorbs the liquid, variation of relevant physical quantity of the sampling pin (400) is detected so as to judge whether the liquid absorbed by the sampling pin (00) is sufficient or not. Compared with the prior art, the sampling method has the advantages that: abnormal liquid absorption situation can be judged, the interference and insufficient liquid absorption can be eliminated, and reliable sampling of the liquid can be realized.

Description

technical field [0001] The invention relates to a sampling device and a method, in particular to a sampling device and a method in the medical field. Background technique [0002] In the sampling system, the sampling needle needs to ensure that the target liquid is absorbed enough. In this regard, in the prior art, an open-loop control system is often used, which only detects that the sampling needle touches the target liquid surface through the liquid level detection system and stops moving, and then performs subsequent actions, such as sucking liquid. [0003] However, interference often exists in actual operation, so that when the sampling needle does not actually touch the target liquid level, it is misjudged that it has touched the real liquid level. This will have a great impact on subsequent operations. For example, when there are air bubbles on the surface of the liquid to be tested and the sampling needle touches the air bubbles, the air bubbles themselves will ha...

Claims

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Application Information

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IPC IPC(8): G01N1/14
CPCG01N35/1011G01F23/00G01F25/0092G01N1/14G01N2035/1025
Inventor 翁彦雯
Owner SHENZHEN MINDRAY BIO MEDICAL ELECTRONICS CO LTD
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