Hitachi High-Tech Corporation

Hitachi-High-Technologies Corporation

Takushi Miyakawa

Tetsuji Kawahara

Yukinori Sakashita

Masaki Hara

Kazuhiro Noda

Yuichi Iwase

Katsuhiro Kambara

Takahiro Kumagai

Yoshihiro Yamashita

Takamichi Mori

Masafumi Miyake

Ryota Watanabe

Haruyoshi Yamamoto

Mitsuhiro Matsuzawa

Kohei Nonaka

Gorou Yoshida

Mariko Miyazaki

Yuto Tanaka

Akinao Fujita

Natsumi Isobe

Kawahara Tetsuji

Problem Provided is an electrolyte analyzer that allows reducing a load of a user in a replacement work compared with conventional one. Solution An electrolyte analyzer includes an ISE electrodethat includes at least one electrode, a reference electrodethat includes at least one electrode different from the ISE electrode, and a housingthat houses the electrodes of the ISE electrodeand the reference electrode. The housingincludes a pressing unit that presses the electrodes to one another, a first press switching unitthat switches the ISE electrodebetween a secured state and a released state, and a second press switching unitthat switches the reference electrodebetween a secured state and a released state. The ISE electrodeand the reference electrodeare each switched between the secured state and the released state.

Electrolyte analyzer

Provided is an electrolyte analysis apparatus capable of diluting and preparing a reagent with higher accuracy with a simpler device configuration, comprising a first flow path configured to send a high-concentration reagent from a high-concentration reagent bottle, a second flow path configured to send a reagent diluent from a reagent diluent bottle that stores the reagent diluent for diluting the high-concentration reagent, a junction unit configured to join the first flow path and the second flow path, a third flow path configured to send a mixed liquid, a dilution tank configured to store the prepared reagent, a prepared reagent discharge nozzle configured to discharge the prepared reagent, a liquid sending mechanism configured to send the reagent and the reagent diluent to the junction unit at a predetermined ratio so that the prepared reagent has a predetermined concentration, and an analysis unit configured to perform analysis with the prepared reagent.

Electrolyte analysis apparatus

Provided is an electrolyte analyzing device that prevents contamination caused by contacting different reagents by a suction nozzle when reagent replacement is performed. The electrolyte analyzing device includes a nozzle support partcoupled to a suction nozzleand movable between a reagent container replacement position and a reagent suction position; a locking mechanismfitted with the nozzle support partmoved to the reagent container replacement position and fixes the nozzle support partat the reagent container replacement position; and an unlocking mechanismthat releases fitting of the nozzle support partand the locking mechanismin a power-on state. When a reagent containersatisfies a predetermined condition, the unlocking mechanismis controlled to release the fitting between the nozzle support partand the locking mechanism, so that the nozzle support partmoves to the reagent suction position.

Electrolyte analyzing device

There is provided an electrolyte analyzer that can appropriately replace consumable items while more exerting analysis processing performances than a conventional electrolyte analyzer does. An electrolyte analyzer includes a plurality of analysis chambershaving ISE electrodesconfigured to measure the concentration of the electrolyte of a sample and a controllerconfigured to control operations in the electrolyte analyzerincluding the analysis chambers. The ISE electrodesof the plurality of analysis chambersanalyze the same analysis items. The controllerselects an analysis chamberused for measurement from the plurality of analysis chamberscorresponding to the remaining measurable numbers of a plurality of ISE electrodesand measurement request status.

An electrolyte analyzing device with which an electrical effect does not occur has a housing to which a reference potential is applied and a flow passage which is electrically insulated from the housing. The analyzing device delivers a sample solution to a first electrode, and delivers a reference electrode solution to a second electrode. A reagent vessel placement unit which is electrically connected to the housing, has placed thereon a diluent bottle accommodating a diluent, an internal standard solution bottle accommodating the internal standard solution, and a reference electrode solution bottle accommodating the reference electrode solution. The reagent vessel placement unit includes a suction nozzle comprising an electrical conductor which is joined to the flow passage, and which can be inserted into and removed from each of the diluent, internal standard solution and reference electrode solution bottles. And, an insulator electrically insulates the suction nozzle and the housing.

Provided is an electrolyte analyzing device in which contamination caused by contacting different reagents with a suction nozzle is prevented when reagent replacement is performed by a user. The electrolyte analyzing device includes a reagent container setting unitthat sets a dilute solution bottle-which houses a dilute solution, an internal standard solution bottle-which houses an internal standard solution, and a reference electrode solution bottle-which houses a reference electrode solution. The reagent container setting unit includes a partition wall between the dilute solution bottle-and the internal standard solution bottle-, and the reference electrode solution bottle-when the dilute solution bottle-, the internal standard solution bottle-, and the reference electrode solution bottle-are set.

Provided is an automated analysis device capable of a more accurate determination of the sizes of bubbles included in a liquid. The automated analysis device includes a detection unit which detects bubbles included in a liquid, an internal standard solution syringe which executes a first liquid supply operation in which a liquid is supplied via the detection unit, a diluent syringe, a sipper syringe, solenoid valves, and a control device which determines whether the size of the bubbles detected during the first liquid supply operation is normal or not based on the operation speed of the liquid supply unit, and controls the operation of the liquid supply unit according to the determination.

Bubble detection in an automated analysis device

A nozzle cleaner includes: a cleaning tank which stores a cleaning solution; a first conductive member that is disposed to be immersed into the cleaning solution stored in the cleaning tank when the nozzle is cleaned; an ultrasonic wave generating mechanism which is disposed so that at least a part of a second conductive member is immersed into the cleaning solution stored in the cleaning tank when the nozzle is cleaned and generates an ultrasonic vibration in the cleaning solution stored in the cleaning tank; a first voltage control unit which controls a potential applied to the first conductive member; and a second voltage control unit which controls a potential applied to the second conductive member, wherein the first voltage control unit applies a second potential Vhigher than a first potential Vapplied to the nozzle when the nozzle is cleaned to the first conductive member.

Nozzle cleaner and automatic analyzer using the same

Provided is an automated analysis device equipped with a lid opening/closing mechanism with which it is possible to selectively open or close lids of a plurality of reagent containers, as well as to close all of the lids of the plurality of reagent containers, regardless of their current open/closed state. Each of a plurality of hooksrotatably linked to a hook base parthas: a claw portionwhich, when oriented to engage with a lid, causes force to act on the lidin the opening direction; a basal partwhich, when oriented to engage with the lid, causes force to act on the lid in the closing direction; and a closing protrusionwhich, when oriented not to engage with the lid, causes force to act on the lid in the closing direction.

Automated analysis device, and lid opening/closing mechanism

The purpose of the present invention is to stably hold the lid of a reagent container in an open state without being influenced by reagent container lid opening and closing operations. An automated analyzer is provided with reagent containers-, a cassette, a reagent container lid opening and closing mechanism, and a lid holding mechanism. The reagent containers-accommodate the reagent and have lids-that pivot about a pivot point. The reagent containers-are mounted on the cassette. The reagent container lid opening and closing mechanism opens and closes the lids-. The lid holding mechanismholds the lidsopened by the reagent container lid opening and closing mechanism.

Automated analyzer

The nozzle cleaning method includes the following steps: a first cleaning step in which a pre-pressurization liquid is discharged from a dispensing nozzle in a first cleaning position so as to clean the inside wall thereof and a first cleaning liquid is applied to the outside wall of the dispensing nozzle so as to clean said outside wall; a second cleaning step in which a second cleaning liquid is suctioned into the dispensing nozzle in a second cleaning position so as to clean the inside wall thereof; and a third cleaning step in which the second cleaning liquid is discharged from the dispensing nozzle in a third cleaning position so as to clean the inside wall thereof and a third cleaning liquid is applied to the outside wall of the dispensing nozzle so as to clean said outside wall.

Growing community of inventors

Tokyo, Japan

Takushi Miyakawa