Automatic Analyzer and Abnormality Determination Method for the Same

An automatic analyzer comprising:

• a stirring unit that stirs a sample and a reagent by irradiating a reaction container with ultrasonic waves;
• a reaction disk that can rotate with the reaction container arranged in a circumferential pattern;
• a power amplifier that applies a voltage to a piezoelectric element of the stirring unit;
• an impedance measuring unit that measures an electric impedance of the piezoelectric element of the stirring unit;
• an analyzing unit that makes component analysis of a reaction liquid of the sample and the reagent;
• and
• a control unit that controls the stirring unit, the reaction disk, the power amplifier, the impedance measuring unit, and the analyzing unit, wherein
• a plurality of the stirring units are provided, and
• the control unit rotates the reaction disk to move the reaction container into which deionized water is discharged to a stirring position of each of the stirring units, and determines a connection condition between the stirring unit and the power amplifier or the impedance measuring unit according to the electric impedance measured by the impedance measuring unit for each of the stirring units.

An abnormality determination method for an automatic analyzer,

• the automatic analyzer including
• a stirring unit that stirs a sample and a reagent by irradiating a reaction container with ultrasonic waves,
• a reaction disk that can rotate with the reaction container arranged in a circumferential pattern,
• a power amplifier that applies a voltage to a piezoelectric element of the stirring unit,
• an impedance measuring unit that measures an electric impedance of the piezoelectric element of the stirring unit, and
• an analyzing unit that makes component analysis of a reaction liquid of the sample and the reagent, the abnormality determination method comprising:
• rotating the reaction disk to move the reaction container into which deionized water is discharged to a stirring position of each of at least two of the stirring units, and determining a connection condition between the stirring unit and the power amplifier or the impedance measuring unit according to the electric impedance measured by the impedance measuring unit for each of the stirring units.