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Automatic analysis device

An automatic analysis device, electromotive force technology, applied in the direction of measurement device, analysis of materials, material analysis by electromagnetic means, etc., can solve the problem that the influence of measurement accuracy cannot be ignored.

Active Publication Date: 2020-12-01
HITACHI HIGH-TECH CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in the case of meeting the new requirements for the minimization of the liquid volume of the sample and the reagent, even if the residual liquid volume is the same, the ratio to the measured liquid volume also increases, so that the measurement accuracy cannot be ignored. Influenced new subjects

Method used

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Experimental program
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Embodiment 2

[0123] The structure of the automatic electrolyte analysis device of this embodiment is basically the same as that of the first embodiment. The dilution tank 1010c of this embodiment is basically the same as the dilution tank 1010 of the first embodiment, but differs in the following points.

[0124] In embodiment one, adopt ellipse (referring to image 3 ), parabolic (refer to Figure 4 ) and other shapes (specifically refer to Figure 10), and the combination of various materials such as UA, glass, PCTFE, etc. was also studied comparatively. In addition, in some experiments, even with respect to UA's elliptical products ( Figure 10F type) was also evaluated ( Figure 11 line 4 of the ).

[0125] In addition, in the first embodiment, from the viewpoint of the influence of the position of the waste liquid nozzle 1204a, only the ellipse made of PCTFE ( Figure 10G type) studied in detail the liquid residue ( Figure 15 , Figure 16 ). On the other hand, in this embodime...

Embodiment 3

[0138] Figure 19 and Figure 20 The schematic structure of the automatic electrolyte analyzer 1000b of the third embodiment is shown. The structure of the automatic electrolyte analysis device 1000b of this embodiment is basically the same as that of the automatic electrolyte analysis device 1000 of the first embodiment, but the following aspects are different. That is, the waste liquid nozzle 1204a of the waste liquid mechanism 1200 for the dilution tank does not have a nozzle-shaped opening, and the front end thereof is directly connected to the opening 1013 provided at the bottom of the dilution tank 1010d, and communicates with the deepest part 1012 inside the dilution tank. In addition, the automatic electrolyte analyzer 1000b does not have a vertical direction driving mechanism for the waste liquid nozzle. The opening of the measurement solution suction nozzle 1052 is disposed on the rotation axis of the dilution tank 1010d near the deepest portion 1012, and the cente...

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Abstract

PROBLEM TO BE SOLVED: To provide an automatic analyzer which satisfies both of a reduction in amount of sample liquid and high measurement accuracy.SOLUTION: An automatic analyzer includes: an electrolyte sensor; a dilution tank having an inner wall, the inner wall being monotonically inclined to a point-like deepest part; a first tube for feeding sample liquid from the dilution tank to the electrolyte sensor; and a second tube for discharging the sample liquid from the dilution tank to the outside. Both one end of the first tube and one end of the second tube can be arranged in the vicinity of the deepest part of the dilution tank.SELECTED DRAWING: Figure 1

Description

technical field [0001] The present invention relates to an automatic analysis device. Background technique [0002] An ion selective electrode (Ion Selective Electrode: ISE) is widely used as a sensor for quickly and easily measuring the concentrations of potassium, sodium, chloride, and other ions (electrolytes) in biological samples represented by blood and the like. [0003] The ISE is composed of an ion-selective sensing membrane (hereinafter also referred to as "sensing membrane"), an internal electrolyte solution (hereinafter also referred to as "internal liquid"), internal electrodes (such as silver silver chloride), and the like. The flow cell type ISE has a flow channel for supplying a sample to be measured inside the housing. One side of the sensing membrane is in contact with the flow channel, and the back side (the other side) of the sensing membrane is in contact with the internal liquid. Part of the internal electrodes is in contact with the internal liquid. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N27/416
Inventor 小泽理石毛悠本间智子岸冈淳史小原贤信小野哲义
Owner HITACHI HIGH-TECH CORP