AUTOMATIC ANALYSIS DEVICE AND SAMPLE-DISPENSING METHOD

WIPO Patent Application WO/2024/095646

A1

The present invention makes it possible to perform dispensing in an accurate and stable manner, regardless of the amount of sample contained in a sample container at a stage of being loaded into an automatic analysis device. This automatic analysis device has: a liquid surface height detection device 13 for detecting the liquid surface height of a sample contained in a sample container 11a; a dispensing device 21 for dispensing the sample by means of a dispensing probe 42; a liquid surface sensing unit 50 that outputs, on the basis of a change in capacitance between the dispensing probe and the sample contained in the sample container, a liquid surface sensing signal indicating that the dispensing probe has come into contact with the sample; and a dispensing control unit 44 for controlling the operation of the dispensing device. The liquid surface sensing unit is provided with a liquid surface sensing circuit that outputs a voltage that changes according to the capacitance between the dispensing probe and the sample contained in the sample container, and performs a comparison between the voltage outputted by the liquid surface sensing circuit and a threshold to generate a liquid surface sensing signal for stopping descent of the dispensing probe, the threshold being set on the basis of at least the liquid surface height of the sample detected by the liquid surface height detection device.

HASEGAWA TAKAFUMI (JP)

PCT/JP2023/035208

May 10, 2024

September 27, 2023

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HITACHI HIGH TECH CORP (JP)

G01N35/10

JP2012037236A	2012-02-23
JP2009180605A	2009-08-13
JP2018185145A	2018-11-22
JP2007303937A	2007-11-22
JP2016027309A	2016-02-18
JP2008256566A	2008-10-23

POLAIRE I.P.C. (JP)

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