Hitachi-high-technologies Corporation

Masafumi Shimada

Taku Sakazume

Yoshihiro Yamashita

Shinya Matsuoka

Toru Inaba

Osamu Kogi

Yushi Harada

This invention provides a sample analyzing device and sample analyzing method designed to suppress nonuniform capture of magnetic particles () and detect a desired substance with higher accuracy. The sample analyzing device includes a flow channel () that conducts thereinto a sample which contains the magnetic particles (), and magnetic field generating means () that generates magnetic fields for capturing the magnetic particles () in a magnetic particles capturing region of the flow channel (); wherein the flow channel has at least one of structural characteristics that a cross-sectional area of the flow channel, at a downstream end of the magnetic particles capturing region, is larger than a cross-sectional area of the flow channel, at an upstream end of the magnetic particles capturing region, and that the magnetic fields generated by the magnetic field generating means () have a greater magnitude at a downstream side of the magnetic particles capturing region than at an upstream side thereof.

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Hitachinaka, Japan

Masafumi Shimada