Hitachi High-tech Corporation

Hitachi-high-technologies Corporation

Eiichiro Takada

Yuya Matsuoka

Yasuhiro Keta

Kazumichi Imai

Ai Masuda

Sadamitsu Aso

Yudai Fukushi

Akihiro Shimase

Fuka Matsudaira

Takuya Takahashi

Sakuichiro Adachi

Masashi Fukaya

Toshinari Sakurai

Shin Imamura

Masako Kawarai

Masaaki Hirano

Akihisa Makino

Tomoto Kawamura

Yoshihiro Yamashita

Takahiro Ando

Makoto Arai

Yoshifumi Sekiguchi

Hitoshi Tokieda

Koshin Hamasaki

Nobuhiro Tsukada

Hidetsugu Tanoue

Kei Shioya

Masafumi Shimada

Mariko Miyazaki

Fumiya Nehashi

Norihiro Hayashida

Takanori Nishiyama

Hiromitsu Mori

Yuka Miyake

Shunsuke Hosono

Provided is an automatic analysis device capable of obtaining a stable light intensity over a wide wavelength band by multiplexing a plurality of LED lights and adjusting the temperature characteristics of each LED element. The automatic analysis device according to the present disclosure is configured such that light emitted from a second LED is reflected to be multiplexed on the same optical axis as the light emitted from a first LED, and the first LED and the second LED are in contact with the same temperature adjustment member.

Automatic analysis device

An object of the present invention is to provide a dispensing device capable of preventing bubbles from jumping out of a nozzle and realizing highly accurate dispensing even though the nozzle is moved at a high speed toward a liquid level and is decelerated and stopped at a high acceleration. The dispensing device according to the present invention starts suction of a liquid in a period from when a nozzle starts to be lowered toward a liquid level of the liquid to when an end portion of the nozzle comes into contact with the liquid level of the liquid and the lowering of the nozzle is stopped (see FIG.).

Dispensing device, automated analysis device, and dispensing method

Cuvette

A reaction vessel capable of measuring a light amount from a reaction liquid without degrading a function of maintaining the reaction vessel at a predetermined temperature is provided. A reaction vessel including a cylindrical shape centered on a first axis, in which an overall length in a first axis direction is longer than an overall length in a second axis direction and an overall length in a third axis direction, the second axis being perpendicular to the first axis and the third axis being perpendicular to the first axis and the second axis. The reaction vessel includes: an opening part which dispenses a liquid at a portion on one end side in the first axis direction; a first flat surface and a second flat surface which is substantially parallel to the first flat surface.

Reaction vessel for automatic analyzer

This invention is capable of improving performance of a biochemical analyzer and facilitating the maintenance. A light source includes: a first LED that emits ultraviolet light and a second LED that has a light emission spectrum different from that of the first LED, the first LED and the second LED being disposed in parallel; a reflection surface that is opposite to the first LED and reflects light of the first LED; and a dichroic surface that is opposite to the second LED, reflects light of the first LED, and allows light of the second LED to penetrate. When an optical member including the dichroic surface is made to be the dichroic prism, the reflection surface reflects light of the first LED to the second LED side, and by using light source of a configuration having a light shielding unit between a light emission surface of the second LED and a dichroic prism, entering of a light emitted from the plural LEDs as a one light beam (beam) to an optical system of latter stage of the biochemical analyzer is enabled.

Light source and biochemical analyzer

Sample rack

Reagent rack

A cleaning water flow velocity during nozzle cleaning is momentarily changed by using a pressure changing mechanism, for example, a syringe. That is, after the start of cleaning, a solenoid valve is opened, and an aspirating operation of the syringe is momentarily performed by a fixed amount in a state where a flow of cleaning water in a nozzle is developed, whereby a nozzle flow velocity is momentarily decelerated. Immediately thereafter, the syringe is pushed back to a home position again, and the flow velocity in the nozzle is accelerated again. A cleaning effect can be improved by performing transition of velocity distribution to various states. Flow velocity control by the pressure changing mechanism can be realized without inhibiting a dispensing cycle, and the cleaning effect of the nozzle can be improved without changing the pressure of a liquid feeding pump or extending the cleaning time.

Automatic analyzer

An automatic analyzer capable of controlling an interval between the tip of a sample nozzle and the bottom of a reaction container regardless of individual differences between reaction containers and sample nozzles and suppressing adhesion of a sample to the sample nozzle is disclosed. Sample nozzlesandare moved toward the bottom surface of a reaction container, the movement of the sample nozzles is stopped at a point in time when a stop position detectordetects a stop position detection plate, the sample nozzles are ascended from the stop position to a position where the stop position detection plateseparates from a detection range of the stop position detector, and an armis moved upward by a moving distance stored in a memory.

Growing community of inventors

Tokyo, Japan

Eiichiro Takada