公开(公告)号：US09933447B2

公开(公告)日：2018-04-03

申请号：US14784359

申请日：2014-04-03

Applicant: HITACHI HIGH-TECHNOLOGIES CORPORATION

Inventor： Hiroyuki Takayama ,  Kazuhiro Nakamura

IPC: G01N35/00 ,  G01N35/04 ,  B08B3/08 ,  G01N21/03

CPC classification number: G01N35/04 ,  B08B3/08 ,  G01N21/03 ,  G01N35/0092 ,  G01N2035/0437 ,  G01N2035/0453

Abstract: A rinse mechanism rinses reaction cuvettes with first and second detergents. An R1 reagent pipetting mechanism 8 rinses the reaction cuvettes that have been rinsed by the rinse mechanism with a special detergent. A counting unit counts and stores in a storage unit a use frequency of each reaction cuvette for a specific reagent item. A determining unit determines whether the counted use frequency exceeds a predetermined threshold N1. A control unit controls the R1 reagent pipetting mechanism such that, in a case where the counted use frequency exceeds the predetermined threshold N1, the reaction cuvettes, which have exceeded the predetermined threshold N1, are soaked with the special detergent only for a period equal to or less than a value derived by multiplying a pipetting cycle time, which indicates a period when a sample is pipetted, by the total number of reaction cuvettes and a predetermined integer.

公开(公告)号：US11131682B2

公开(公告)日：2021-09-28

申请号：US16331603

申请日：2017-08-07

Applicant: HITACHI HIGH-TECHNOLOGIES CORPORATION

Inventor： Masaki Hara ,  Tetsuji Kawahara ,  Hiroyuki Takayama

IPC: G01N1/14 ,  G01N35/10 ,  G01N35/02

Abstract: The automatic analyzer includes a gear pump that supplies cleaning water to reagent probes and sample probes; a cleaning flow path that feeds the cleaning water discharged from the gear pump to the respective probes; a pressure sensor that measures pressure of the cleaning flow path; a return flow path that is disposed in parallel to the gear pump and connects a discharging port side of the gear pump and an aspirating port side thereof; a throttling unit that is disposed in the return flow path and adjusts a flow rate of the cleaning water flowing through the return flow path; and a control unit that changes an opening and closing degree of the throttling unit according to a measurement result of the pressure sensor. Accordingly, it is unnecessary to control driving of a pump used for cleaning a probe while having a low cost and a small mounting size.

公开(公告)号：US10591498B2

公开(公告)日：2020-03-17

申请号：US15554086

申请日：2016-02-01

Applicant: Hitachi High-Technologies Corporation

Inventor： Koichi Nishimura ,  Hiroyuki Takayama

IPC: G01N35/00 ,  G01N35/10 ,  G01N35/02 ,  G01N33/50

Abstract: Provided is an automatic analyzer capable of replacing an insertion mechanism while suppressing occurrence of dispensing abnormality and analysis result abnormality accompanying deterioration of the insertion mechanism. Included are an insertion mechanism that is inserted into a closed container through a lid of the container; a storage unit that stores an insertion history count corresponding to a cumulative load of the insertion mechanism caused by inserting the insertion mechanism into a plurality of the containers, and an allowable insertion history count which is an allowable value of the insertion history count; and a control unit that compares the insertion history count with the allowable insertion history count and performs control to make a notification to an operator in a case where the insertion history count reaches the allowable insertion history count.

公开(公告)号：US10422808B2

公开(公告)日：2019-09-24

申请号：US15905881

申请日：2018-02-27

Applicant: HITACHI HIGH-TECHNOLOGIES CORPORATION

Inventor： Hiroyuki Takayama ,  Kazuhiro Nakamura

IPC: G01N35/00 ,  G01N35/04 ,  B08B3/08 ,  G01N21/03

Abstract: A rinse mechanism rinses reaction cuvettes with first and second detergents. An R1 reagent pipetting mechanism 8 rinses the reaction cuvettes that have been rinsed by the rinse mechanism with a special detergent. A counting unit counts and stores in a storage unit a use frequency of each reaction cuvette for a specific reagent item. A determining unit determines whether the counted use frequency exceeds a predetermined threshold N1. A control unit controls the R1 reagent pipetting mechanism such that, in a case where the counted use frequency exceeds the predetermined threshold N1, the reaction cuvettes, which have exceeded the predetermined threshold N1, are soaked with the special detergent only for a period equal to or less than a value derived by multiplying a pipetting cycle time, which indicates a period when a sample is pipetted, by the total number of reaction cuvettes and a predetermined integer.