Abstract: An object of the present invention is to provide an automatic analyzer capable of individually identifying a channel in which an abnormality has occurred while suppressing complication of the analyzer. The automatic analyzer, comprises: a channel through which liquid flows; a sensor that monitors the channel; and a control unit that determines abnormality in the liquid flowing through the channel based on measurement results of the sensor. In the automatic analyzer, one of the sensors monitors, as monitoring objects, the plurality of channels having different properties, and the control unit determines that which of the channels an abnormality has occurred based on analogue monitoring data continuously measured by the sensor during monitoring and analogue reference data continuously measured by the sensor beforehand before monitoring.

Abstract: Provided is an automatic analyzer capable of detecting a specimen vessel even when a barcode label is not attached to the specimen vessel. Included are a reagent specimen disk including a mounting unit for mounting a specimen vessel that stores a specimen to be analyzed on an outer peripheral portion thereof, a two-dimensional code arranged on the reagent specimen disk at a back position of the mounting unit, a barcode arranged on a side surface of the specimen vessel, a sensor arranged at a front position of the mounting unit and capable of reading the two-dimensional code and the barcode, and a control unit for determining whether the specimen vessel is mounted on the mounting unit based on whether a contrast value of the light reflected from the two-dimensional code is equal to or greater than a threshold set in advance, by using an output signal of the sensor.

Abstract: The present invention provides a chemical analyzer with highly reliable agitation performance, said chemical analyzer not only diagnosing the deterioration of a piezoelectric element, but also diagnosing the deformation and displacement of a reaction container and diagnosing the normality of the liquid quantity of a substance to be agitated in the reaction container. This chemical analyzer is characterized by comprising: an agitating mechanism that uses acoustic waves to agitate a sample and a reagent within a reaction container, generates acoustic waves using a piezoelectric element, and has an acoustic wave sensor for detecting the acoustic waves; and a controller that controls the agitating mechanism.

Abstract: The automatic analysis device is provided with (1) a measurement mechanism having a light measuring unit having a reaction container in which the sample is dispensed, a light source which emits light to the reaction container, and a detection unit that detects scattered light from the sample in the reaction container, (2) an amplifier circuit unit having an adder-subtractor that adds or subtracts a correction signal to or from a first measurement signal from the detection unit, and an amplifier circuit which amplifies the output signal by the adder-subtractor at a fixed amplification rate to output a second measurement signal, and (3) an arithmetic operation unit which calculates the correction signal on the basis of a difference between the signal level of the second measurement signal and a target value, and which executes an analysis action based on the second measurement signal after correction by means of the correction signal.

Abstract: In blood coagulation time measurement, the reaction time relies on the blood coagulation ability of a specimen and is not fixed. In particular, in module-type devices, errors may occur in the specimen processing, measurement number, and measurement time between a plurality of blood coagulation analysis units, leading to the risk of lowering the processing capability of the device as a whole.

Abstract: In blood coagulation time measurement, the reaction time relies on the blood coagulation ability of a specimen and is not fixed. In particular, in module-type devices, errors may occur in the specimen processing, measurement number, and measurement time between a plurality of blood coagulation analysis units, leading to the risk of lowering the processing capability of the device as a whole.

Abstract: The automatic analysis device is provided with (1) a measurement mechanism having a light measuring unit having a reaction container in which the sample is dispensed, a light source which emits light to the reaction container, and a detection unit that detects scattered light from the sample in the reaction container, (2) an amplifier circuit unit having an adder-subtractor that adds or subtracts a correction signal to or from a first measurement signal from the detection unit, and an amplifier circuit which amplifies the output signal by the adder-subtractor at a fixed amplification rate to output a second measurement signal, and (3) an arithmetic operation unit which calculates the correction signal on the basis of a difference between the signal level of the second measurement signal and a target value, and which executes an analysis action based on the second measurement signal after correction by means of the correction signal.

Abstract: An analysis device using scattering light is provided capable of, when a foreign substance such as a bubble is mixed in a measurement target or is attached in a reaction container, reducing the influence by the foreign substance while improving the S/N ratio characteristics. Two or more detectors are disposed on a plane orthogonal to an optical axis of light applied to the measurement target and on a circumference around the optical axis. A change in outputs from the detectors is observed, and a detector influenced by noise due to a foreign substance such as a bubble is specified for rejection, and outputs from the detectors are averaged.