Mixing device for automatic analyzer

摘要

In order to provide an automatic analyzer capable of ensuring an effective agitation of the reagent and specimen, multiple piezoelectric elements (35) are arranged in a row along the height of liquid level in the reaction vessel (11), and an ultrasonic reflecting material (38) is installed on the bottom of the portion of the heat insulating bath (12) where heat insulating medium (13) is stored. Swirling flow by agitation (36), with specimen liquid level as a starting point, is produced by the acoustic radiation pressure of the ultrasonic wave. The specimen and reagent are mixed and agitated by said swirling flow by agitation (36). This rise of the part of the liquid level is obtained by controlling a position and an angle of the lower ultrasonic wave (8).