公开(公告)号：US20200249249A1

公开(公告)日：2020-08-06

申请号：US16477221

申请日：2018-02-15

Applicant: Hitachi High-Technologies Corporation

Inventor： Hiroya UMEKI ,  Kenta IMAI ,  Yoshihiro YAMASHITA ,  Shunsuke SASAKI ,  Akihiro ENDOU

IPC: G01N35/00 ,  G01N35/10

Abstract: An automatic analysis device includes a probe that performs a dispensing operation including a suction process and a discharge process with respect to liquid; a syringe that generates a pressure change for dispensing liquid at the probe; a flow path that connects the probe and the syringe with each other; a pressure sensor that measures the pressure change in the flow path at the time of liquid dispensing; a storage portion that stores a pressure change of time-series when reference fluid is discharged as a reference discharge pressure waveform; and a determination portion that determines whether or not there is an abnormality in the suction process of the sample from a relationship between a value of difference or a ratio between the reference discharge pressure waveform and the pressure waveform of a determination target at the time of discharge of liquid and normal range.