Patent ID: 9393562
Filing Date: 2016-07-19
CPC Classification: B01L,C12Q,G01N

Claim Text:
1. An analyzer, comprising: a reagent rack installation part where a reagent rack holding a plurality of reagent containers is to be installed; a flow cell installation part where a flow cell including an internal passage as well as an injection port and a discharge port connected to the internal passage is to be installed; a sampling nozzle; a liquid level detection unit that detects the sampling nozzle coming into contact with a liquid level; a cleaning tank; a nozzle driving mechanism that drives the sampling nozzle among the reagent containers, the cleaning tank and the injection port of the flow cell; a detection unit that detects a change in a sample in the flow cell; a solution sending system including: a cleaning liquid tank containing cleaning liquid; a microsyringe connected to the sampling nozzle, the microsyringe being for suction and ejection of liquid to/from a tip end of the sampling nozzle; a first valve to send cleaning liquid from the cleaning liquid tank to the microsyringe; and a second valve to send cleaning liquid from the cleaning liquid tank to the cleaning tank; and a controller that controls various parts of the analyzer, wherein the controller controls the microsyringe while inserting the sampling nozzle into a reagent by a predetermined distance in response to detection by the liquid level detection unit of a surface of the reagent in the reagent container, thus sucking a required amount of the reagent from the reagent container ahead of a part of the sampling nozzle filled with cleaning liquid, controls the microsyringe while inserting the sampling nozzle into the injection port of the flow cell, thus injecting the sucked reagent into the flow cell through the injection port, or operates the first valve and/or the second valve while positioning the sampling nozzle in the cleaning tank, thus cleaning an inside and/or an outside of the sampling nozzle.