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Gas replacement type trace quantity micro sampling-fetching pump

A micro-injection pump and gas replacement technology, applied in the direction of liquid variable volume machinery, pumps, machines/engines, etc., can solve the problems of complex flushing pipelines and cross-contamination, avoid the possibility of cross-contamination, and reduce sample errors. the effect of reducing the chance of being infected

Inactive Publication Date: 2007-10-31
JIAXING QUEST LIFE SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to avoid the shortcomings of the above-mentioned several methods and provide an air-displacing micro-sampling pump using a disposable suction head as a liquid transmission medium. This solution solves the problems of complex flushing pipelines and cross-contamination

Method used

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  • Gas replacement type trace quantity micro sampling-fetching pump

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Embodiment Construction

[0019] As shown in Figure 1, the gas displacement type micro-sampling pump with automatic tip removal device according to the present invention includes a pump body 10, a linear motor 3, a transmission screw 4, and a piston 9, which are connected sequentially from top to bottom as An integral sliding sleeve 8, a cylinder 11, a gun head 16, and a suction head removal sleeve 15, wherein the suction head removal sleeve 15 is fixed on the pump body 10 near the gun head.

[0020] Micro-pressure sensor 14 can also be set at the middle position of piston 9 bottoms and gun head 16, cooperates amplifier circuit again, can detect liquid level height sensitively and be enclosed within the suction head on the gun head whether cooperate closely etc. according to pressure change in cylinder.

[0021] The invention adopts a high-precision motor, and composes a zero-point reset device through a photoelectric sensor and a block connected to the transmission screw, which can control the movement...

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PUM

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Abstract

The invention relates to a micro-scale sampling pump art sphere for transferring microliter liquid as using in medical devices and laboratory automatic devices, which is a gas replacing type and with an auto-removing suction nozzle device and comprises a pump body, a linear motor, a driving guide screw, a piston, a sliding sleeve, a cylinder, a gun end and a suction nozzle removing sleeve, wherein the sliding sleeve, the cylinder and the gun end are connected together one by one, and the suction nozzle removing sleeve is fixed on the pump where is close to the gun end. The one-time suction nozzle of the invention is used as the air replacing type micro-scale sampling pump for transferring liquid medium, which resolves the questions of the requirement of complicated washing pipe and cross contamination, and also can acutely detect height of the liquor and the suction nozzle fitting tightly or not and being caught or not. Compared with the expensive huge-scale liquid working stations abroad, the invention has the superiority in cost and avoids the cross contamination between specimens.

Description

technical field [0001] The invention relates to the technical field of a micro-injection pump for micro-level liquid transfer used in medical equipment and laboratory automation equipment. Background technique [0002] At present, the common method of adding samples by hand is adopted in laboratories of scientific research institutions and hospital inspection departments in China. This method has high requirements for operators, and the error of adding samples is large. Moreover, there is the possibility of adding wrong hole positions. Another important problem is that the sample adding personnel may be infected when handling infectious diseases or toxic and harmful substances. Even if some units have purchased expensive large-scale liquid workstations from abroad, they still use syringe pumps in liquid replacement mode as their core components. Such pumps require relatively complicated pipeline systems and probe flushing devices, and their applications are limited. In addit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04B17/03
Inventor 黄鹤周宋兵王家达
Owner JIAXING QUEST LIFE SCI
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