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    Automatic analyzer
    2.
    发明授权
    Automatic analyzer 有权

    公开(公告)号：US11162965B2

    公开(公告)日：2021-11-02

    申请号：US16463965

    申请日：2017-11-08

    Applicant: Hitachi High-Technologies Corporation

    Inventor： Shinji Azuma ,  Isao Yamazaki ,  Masashi Fukaya ,  Takumi Ito

    IPC: G01N35/10 ,  G01N35/00

    Abstract: The object of the invention is to avoid a decrease in dispensing accuracy of a sample, a reagent, or the like as a temperature changes. In an automatic analyzer, a dispensing nozzle sucks the sample from a sample container holding the sample and discharges the sample to a reaction container. A syringe pump controls an amount of change in a volume of water. A first pipe connects the dispensing nozzle and the syringe pump. An electromagnetic valve flows or stops the water. A second pipe connects the electromagnetic valve and the syringe pump. A branch pipe branches the water. A third pipe connects the electromagnetic valve and the branch pipe. A case accommodates at least the syringe pump, the first pipe, the electromagnetic valve, the second pipe, the branch pipe, and the third pipe. Further, the third pipe includes a heat exchange unit that performs heat exchange of the water.

    Automatic analyzer and automatic analysis method
    4.
    发明授权
    Automatic analyzer and automatic analysis method 有权

    公开(公告)号：US11353473B2

    公开(公告)日：2022-06-07

    申请号：US16466215

    申请日：2017-11-07

    Applicant: Hitachi High-Technologies Corporation

    Inventor： Takumi Ito ,  Shinji Azuma ,  Masashi Fukaya

    IPC: G01N35/10 ,  G01N21/78 ,  G01N35/04

    Abstract: Provided is a technique related to an automatic analyzer and capable of ensuring cleaning performance of a reaction container by a cleaning process including a tip suction step, and preventing decrease in analysis accuracy or improving the analysis accuracy. The automatic analyzer includes a control apparatus, a block suction mechanism that moves a suction nozzle and a suction block for suctioning a liquid in the reaction container up and down and suctions the liquid, and a block cleaning mechanism for cleaning the suction block. After receiving an analysis request, the control apparatus causes, in a tip suction step that is provided before an analysis step and is a last step of a cleaning step, both suction of the liquid by the block suction mechanism and cleaning of the suction block by the block cleaning mechanism to be performed in a first step, and then only the suction of the liquid by the block suction mechanism to be performed in a second step including one or more cycles; and causes the analysis step to be performed using the reaction container in which the second step is performed.

    Automatic analyzer and automatic analysis method
    8.
    发明授权
    Automatic analyzer and automatic analysis method 有权

    公开(公告)号：US11262371B2

    公开(公告)日：2022-03-01

    申请号：US16465764

    申请日：2017-11-07

    Applicant: Hitachi High-Technologies Corporation

    Inventor： Masashi Fukaya ,  Shinji Azuma ,  Takuya Takahashi ,  Takumi Ito

    IPC: G01N35/02 ,  G01N35/10 ,  G01N1/28 ,  G01N35/04

    Abstract: An automatic analyzer controls a sequence including optical measurement and cleaning and includes a discharge mechanism including a discharge nozzle for discharging a liquid into a reaction vessel; and an overflow suction mechanism including an overflow suction nozzle for sucking an overflow amount of the liquid in the reaction vessel. In a liquid discharge step included in a cleaning process and interposed between a preceding step using a detergent and a succeeding blank value measurement step, the automatic analyzer establishes a first state where a lower end of the discharge nozzle is located in a height-wise lower part of the reaction vessel and a lower end of the overflow suction nozzle is located in an upper part of the reaction vessel, and provides control to carry out the discharge of liquid from the discharge nozzle and the suction of the overflow amount of liquid through the overflow suction nozzle.

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