Hitachi, Ltd.

Kazuhiro Sano

Norio Oowada

Hideki Asai

Hideyuki Horiuchi

Susumu Kai

Yasuaki Kojima

Hatsue Katahira

Shigeru Yonekawa

A particle image analyzing apparatus of high classifying accuracy and high efficiency in which a criterion for determining whether fine classification is required or not can be set for every facility such as hospital, or the like. A rough classification unit executes rough classification of particles and supplies results of the rough classification to a fine classification necessity determination unit. The necessity determination unit compares the results of the rough classification with reference values stored in a reference value storage unit and determines from the comparison whether every sample is normal or abnormal to thereby determine whether fine classification is required or not. The reference values stored in the storage unit can be changed in accordance with the subject of examination through an input/output control unit from a keyboard. When the determination unit makes a decision that fine classification is required, the determination unit gives an instruction to an image processing control circuit to execute fine classification. Characteristic parameters for fine classification are supplied to a fine classification unit on the basis of the control instruction of the control circuit. Then, fine classification is executed, so that results of the fine classification are supplied to the determination unit.

Particle image analyzing apparatus

A flow type particle image analytical method for feeding a particles-suspended sample by surrounding it by a cleaning solution, imaging particles in the sample by irradiating light to it, and automatically classifying the particles in the sample by analyzing the picked-up particle images, wherein the method comprises a means for designating the kind of particles to be reviewed beforehand among the classified particles, a means for storing only particles which are automatically classified to the designated particle kind in a review image memory, a means for displaying particles of the same kind on a CRT display in batch so as to review particle images, and a means for classifying each of the displayed particles finally by an operator or for changing the particle name.

Flow type particle image analyzing method and apparatus for displaying

A liquid sample automatic analyzer is achieved in which if any test strip is not placed at a photometric position for such a reason that a test strip automatic supply device has failed to supply the test strip, this failure is detected to enable automatic judgment on that the measured results of examination correspond to which samples. A presence/absence detector is provided in the test strip automatic supply device, and a pressure detector for detecting whether the test strip is gripped or not is provided in a grip device. Detection signals from the presence/absence detector and the pressure detector are supplied to a control unit. Based on those detection signals, the control unit determines a failure in taking out or gripping the test strip, if occurs. Accordingly, even when the test strip is not placed at the photometric position in the measuring device and a vacant position occurs, this occurrence of the vacant position is detected to enable the analyzer to automatically and correctly judge that the measured results of examination correspond to which samples.

Liquid sample automatic analyzer

Growing community of inventors

Ibaraki-ken, Japan

Kazuhiro Sano