CN219266167U

CN219266167U - Electrolyte analyzer

Info

Publication number: CN219266167U
Application number: CN202320067822.6U
Authority: CN
Inventors: 庄雷; 庄东宁
Original assignee: JIANGSU AUDICOM MEDICAL TECHNOLOGY CO LTD
Current assignee: JIANGSU AUDICOM MEDICAL TECHNOLOGY CO LTD
Priority date: 2023-01-10
Filing date: 2023-01-10
Publication date: 2023-06-27
Anticipated expiration: 2033-01-10

Abstract

The utility model discloses an electrolyte analyzer, which comprises a shell, wherein the upper part of the shell is a control area and is used for controlling the electrolyte analyzer and displaying an analysis result; one side of the lower part of the shell is a sample injection area, and the other side is a test analysis area; a manual sample injection system is arranged in the sample injection area, and samples to be measured are sucked through the manual sample injection system; the device is characterized in that an electrode assembly, a pump assembly and an electromagnetic valve assembly are arranged in the test analysis area, and the electrode assembly, the pump assembly and the electromagnetic valve assembly are sequentially connected through pipelines and form a closed flow path system with the manual sample injection system. The flow path design of the electrolyte analyzer adopts the micropore pipe diameter, and adopts a bubble detection sensor to detect bubbles, and the pipeline is flushed in the whole process. The method combining full-automatic calibration and manual calibration is used, and an intelligent end point judging program is adopted on an analysis method, so that an analysis result is more accurate.

Description

Electrolyte analyzer

Technical Field

The utility model relates to the technical field of medical detection instruments, in particular to an electrolyte analyzer.

Background

Electrolyte analyzers are indispensable in clinical tests, where they are mainly tested to maintain the balance of osmotic pressure in human blood, body fluids. The electrolyte analyzer is used as an instrument for detecting the concentration of electrolyte ions, and provides a powerful basis for clinical diagnosis.

Currently, electrolyte analyzers commonly employ ion selective electrode methods to measure the concentration of electrolyte ions in a sample. The core of the method is an electrochemical sensor, namely an ion selective electrode. When the sample to be measured flows through the electrode, different ions in the sample to be measured penetrate through the corresponding selective dialysis membrane and chemically react with the electrode internal liquid, and potential difference is formed at two ends of the selective dialysis membrane, so that the ion concentration of the sample is measured.

Disclosure of Invention

The utility model aims to provide an electrolyte analyzer, which adopts a manual sample injection system, and has the advantages of reasonable structure, low failure rate, convenient use and easy maintenance.

In order to solve the technical problems, the utility model provides an electrolyte analyzer, which comprises a shell, wherein the upper part of the shell is a control area and is used for controlling the electrolyte analyzer and displaying analysis results;

one side of the lower part of the shell is a sample injection area, and the other side is a test analysis area;

a manual sample injection system is arranged in the sample injection area, and samples to be measured are sucked through the manual sample injection system;

the device is characterized in that an electrode assembly, a pump assembly and an electromagnetic valve assembly are arranged in the test analysis area, and the electrode assembly, the pump assembly and the electromagnetic valve assembly are sequentially connected through pipelines and form a closed flow path system with the manual sample injection system.

Preferably, the manual sample injection system comprises a sample injection needle and a sample injection needle seat, wherein the sample injection needle seat is rotationally connected with the casing through a rotating shaft, the sample injection needle is installed on the sample injection needle seat and rotates along with the sample injection needle seat, one end of the sample injection needle is communicated with the electrode assembly through a pipeline, and the other end of the sample injection needle is communicated with the liquid supply port.

Preferably, a bubble detection sensor is arranged on a pipeline between the sample injection needle and the electrode assembly, so that bubbles in the pipeline can be detected.

Preferably, the electrode assembly is disposed in an aluminum alloy electrode shield and a sample ground electrode is added.

Preferably, one end of the pump assembly is communicated with a pipeline of the electrode assembly, and the other end of the pump assembly is connected with a waste liquid bottle through the pipeline.

Preferably, the electromagnetic valve assembly comprises an A/B valve and a liquid-air valve, and the A/B valve and the liquid-air valve are sequentially arranged along the flowing direction of the reagent.

Preferably, the liquid inlet end of the A/B valve is respectively connected with the A reagent bottle and the B reagent bottle.

Preferably, the back of the shell is detachably connected with a back cover, and a power switch, a power socket, a reagent connector, a supercharger, a USB and an RS232 interface are arranged on the back cover.

Preferably, a main board assembly and a power supply assembly for supplying power to the main board assembly are arranged in the casing on the inner side of the rear cover, and the main board assembly is used for controlling the electrode assembly, the pump assembly and the electromagnetic valve assembly.

Preferably, the control area is provided with a film key panel and a display screen, the film key panel is used for manually setting parameters, and the display screen is used for displaying the parameters and analysis results of the sample to be measured; the electrolyte analyzer is also provided with a thermal printer for printing the analysis result of the sample to be measured.

Compared with the prior art, the utility model has the beneficial effects that:

1. the electrode component of the electrolyte analyzer adopts a leadless and combined ion selective electrode manufactured by an inlet material, and excessive silver chloride is adopted in the electrode, so that the phenomenon of early failure is avoided, and meanwhile, all the electrodes adopt a unique full-sealing technology, so that the stability of the electrode is improved;

2. the flow path design of the electrolyte analyzer adopts the micropore pipe diameter, and adopts a bubble detection sensor to detect bubbles, so that the pipeline is flushed in the whole process. The method combining full-automatic calibration and manual calibration is used, and an intelligent end point judging program is adopted on an analysis method, so that an analysis result is more accurate.

Drawings

FIG. 1 is a front view of an electrolyte analyzer provided by the present utility model;

FIG. 2 is a side cross-sectional view of an electrolyte analyzer provided by the present utility model;

FIG. 3 is a state diagram of an electrolyte analyzer according to the present utility model;

FIG. 4 is a schematic view showing the internal structure of a test analysis area of an electrolyte analyzer according to the present utility model;

FIG. 5 is a schematic diagram of the operation of an electrolyte analyzer according to the present utility model;

FIG. 6 is a rear view of an electrolyte analyzer provided by the present utility model;

fig. 7 is a schematic view showing an internal structure of a removed lid of an electrolyte analyzer according to the present utility model.

In the figure: 1. a housing; 2. a control area; 3. a sample injection area; 4. testing the analysis area; 5. an electrode assembly; 6. a bubble detection sensor; 7. a pump assembly; 8. a waste liquid bottle; 9. an A/B valve; 10. a liquid-air valve; 11. a, a reagent bottle; 12. a reagent bottle B; 13. a main board assembly; 14. a power supply assembly; 101. a rear cover; 301. a sample injection needle; 302. a sample injection needle seat; 303. a liquid supply port.

Detailed Description

The utility model is described in further detail below with reference to the attached drawings and specific examples. Advantages and features of the utility model will become more apparent from the following description and from the claims. It should be noted that the drawings are in a very simplified form and are all to a non-precise scale, merely for convenience and clarity in aiding in the description of embodiments of the utility model.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", etc. may explicitly or implicitly include one or more such feature. In the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art in a specific case.

Example 1

The utility model provides an electrolyte analyzer, please refer to fig. 1, which comprises a machine shell 1, wherein the upper part of the machine shell 1 is provided with a control area 2 for controlling the electrolyte analyzer and displaying analysis results; one side of the lower part of the shell 1 is a sample injection area 3, and the other side is a test analysis area 4; a manual sample injection system is arranged in the sample injection area 3, and samples to be measured are sucked through the manual sample injection system; the test analysis area 4 is internally provided with an electrode assembly, a pump assembly and an electromagnetic valve assembly, the electrode assembly, the pump assembly and the electromagnetic valve assembly are sequentially connected through pipelines, and a closed flow path system is formed by the electrode assembly, the pump assembly and the electromagnetic valve assembly and the manual sample injection system, the flow path design adopts a micropore pipe diameter, a bubble detection sensor is adopted to detect bubbles, and the pipelines are flushed in the whole process. The method combining full-automatic calibration and manual calibration is used, and an intelligent end point judging program is adopted on an analysis method, so that an analysis result is more accurate.

Specifically, referring to fig. 2 and 3, the manual sample injection system includes a sample injection needle 301 and a sample injection needle seat 302, the sample injection needle seat 302 is rotatably connected with the casing 1 through a rotating shaft, the sample injection needle 301 is mounted on the sample injection needle seat 302 and rotates along with the sample injection needle seat 302, so as to sample a pseudobook in a test tube; and one end of the sample injection needle 301 is communicated with the electrode assembly 5 through a pipeline, and the other end is communicated with the liquid supply port 303.

Further, referring to fig. 4 and 5, a bubble detection sensor 6 is disposed on a pipeline between the sample injection needle 301 and the electrode assembly 5, so that bubbles in the pipeline can be detected, a sample to be detected can be sucked by the pump assembly each time of operation, and the pump assembly is calibrated by feeding back the bubbles in the pipeline through the bubble detection sensor 6.

Further, the electrode assembly 5 is arranged in an aluminum alloy electrode shielding cover, and a sample grounding electrode is added, so that the electrode group works stably; and the electrode assembly of the electrolyte analyzer adopts a leadless and combined ion selective electrode manufactured by an inlet material, and excessive silver chloride is adopted in the electrode, so that the phenomenon of early failure is avoided, and meanwhile, all the electrodes adopt a unique full-sealing technology, so that the stability of the electrode is further improved.

Further, the pump assembly 7 is a sample pump, one end of the pump assembly is communicated with a pipeline of the electrode assembly 5, and the other end of the pump assembly is connected with a waste liquid bottle 8 through the pipeline; the electromagnetic valve component is respectively connected with the reagent bottle A11 and the reagent bottle B12. The electromagnetic valve component sucks reagent under program control, and calibration is completed through the liquid supply port, the sample injection needle, the electrode component and the sample pump.

The ion selective electrode employed in the electrode assembly 5 is an electrochemical sensor that converts the activity change of the ions to be measured in solution into a change in electrode potential in accordance with the Nernst (Nernst) equation. I.e., the logarithm of the activity of ions in solution is linear with electrode potential.

In an electrolyte in which most of the salt exists in the form of ions, an electro-exchange reaction occurs between the electrode having selectivity and the associated ions, the potential of the ion-selective electrode varies with the concentration of ions in the sample, and the reference electrode does not vary with the concentration of ions in the sample, a constant reference potential is provided at all times, whereby a potential difference is formed between the ion-selective electrode and the reference electrode, and the potential difference varies with the concentration of ions in the sample solution, and the concentration of the corresponding ions can be calculated by measuring the potential difference by the Nernst equation.

The electrolyte analyzer of the utility model adopts a two-point calibration method to measure the concentration of K, na, cl, ca ions and the pH value in the sample. I.e. two solutions of known concentration were measured first: the method comprises the steps of measuring potentials of a calibration solution A (solution in a reagent bottle) and an inclined standard solution B (solution in a reagent bottle) by an electrode, establishing a calibration curve in an instrument through the two potentials, measuring the potential of a sample with unknown concentration, and obtaining the ion concentration of the sample from the established calibration curve.

Specifically, referring to fig. 6, the back of the casing 1 is detachably connected with a back cover 101, and a power switch, a power socket, a reagent connector, a booster, a USB and RS232 interface are installed on the back cover 101 for supplying power or connecting with an external device.

Specifically, a main board assembly 13 and a power supply assembly 14 for supplying power to the main board assembly 13 are disposed in the casing 1 inside the rear cover 101, and the main board assembly 13 is used for controlling the electrode assembly, the pump assembly and the electromagnetic valve assembly; the main board assembly 13 adopts an embedded processor, all tests, calibration, electrode state monitoring and the like of the instrument are controlled by programs, all circuits adopt a single board design, all measuring components and flow path systems are combined into a unit to form an open structure, and the whole instrument adopts a modularized design.

Specifically, referring to fig. 7, the control area 2 is provided with a thin film key panel and a display screen, wherein the thin film key panel is used for manually setting parameters, and the display screen is used for displaying the parameters and the analysis result of the sample to be measured; meanwhile, the electrolyte analyzer is also provided with a thermal printer for printing the analysis result of the sample to be measured, when the printing paper is replaced, a cover opening button is pressed by a hand, the rest paper core is taken out, a new paper roll is put on and pulled out, and then the front cover is closed.

The above description is only illustrative of the preferred embodiments of the present utility model and is not intended to limit the scope of the present utility model, and any alterations and modifications made by those skilled in the art based on the above disclosure shall fall within the scope of the appended claims.

Claims

1. An electrolyte analyzer comprises a machine shell (1), and is characterized in that the upper part of the machine shell (1) is provided with a control area (2) for controlling the electrolyte analyzer and displaying analysis results;

one side of the lower part of the shell (1) is a sample injection area (3), and the other side is a test analysis area (4);

a manual sample injection system is arranged in the sample injection area (3), and samples to be measured are sucked through the manual sample injection system;

an electrode assembly, a pump assembly and an electromagnetic valve assembly are arranged in the test analysis area (4), and the electrode assembly, the pump assembly and the electromagnetic valve assembly are sequentially connected through pipelines and form a closed flow path system with the manual sample injection system.

2. The electrolyte analyzer according to claim 1, wherein the manual sample injection system comprises a sample injection needle (301) and a sample injection needle seat (302), the sample injection needle seat (302) is rotationally connected with the casing (1) through a rotating shaft, the sample injection needle (301) is mounted on the sample injection needle seat (302) and rotates along with the sample injection needle seat (302), one end of the sample injection needle (301) is communicated with the electrode assembly (5) through a pipeline, and the other end of the sample injection needle is communicated with a liquid supply port (303).

3. An electrolyte analyser according to claim 2 wherein a bubble detection sensor (6) is provided in the line between the sample injection needle (301) and the electrode assembly (5) to enable detection of bubbles in the line.

4. An electrolyte analyser according to claim 3 wherein the electrode assembly (5) is housed in an aluminium alloy electrode shield and a sample ground electrode is added.

5. An electrolyte analyser according to claim 1 wherein the pump assembly (7) is in communication with the tubing of the electrode assembly (5) at one end and is connected to a waste bottle (8) at the other end by tubing.

6. An electrolyte analyser according to claim 1 wherein the solenoid valve assembly comprises an a/B valve (9) and a liquid-air valve (10), the a/B valve (9) and the liquid-air valve (10) being arranged in sequence in the direction of flow of the reagent.

7. An electrolyte analyser according to claim 6 wherein the liquid inlet ends of the a/B valves (9) are connected to a reagent bottle (11) and a reagent bottle (12) respectively.

8. An electrolyte analyzer according to claim 1, wherein the back of the housing (1) is detachably connected with a back cover (101), and a power switch, a power socket, a reagent connector, a booster, a USB and an RS232 interface are mounted on the back cover (101).

9. An electrolyte analyser according to claim 8, wherein a main board assembly (13) and a power supply assembly (14) for supplying power to the main board assembly (13) are provided in the housing (1) inside the rear cover (101), the main board assembly (13) being adapted to control the electrode assembly, the pump assembly and the solenoid valve assembly.

10. An electrolyte analyser according to claim 1, wherein the control area (2) is provided with a membrane key panel for manually setting parameters and a display screen for displaying the parameters and the analysis result of the sample to be determined; the electrolyte analyzer is also provided with a thermal printer for printing the analysis result of the sample to be measured.