JP2008209329A - Automatic analyzer - Google Patents

Abstract

【Task】
Providing an automatic analyzer that can contribute to the planned and efficient operation of a laboratory by predicting when reagent replacement or addition is necessary based on past analysis results for reagents used in each analysis item For the purpose.
[Solution]
From the past analysis results, the reagent consumption for each analysis item is linked to information such as date and time, analysis group, etc., and the time when each reagent should be replaced in the analysis at that date and time Automatic analyzer with the main feature of predicting and presenting trends
[Selection] Figure 1

Description

  The present invention relates to an automatic analyzer that performs qualitative / quantitative analysis of biological samples such as blood and urine, and more particularly, an automatic apparatus that can predict from the past analysis results when reagent analysis or addition of each analysis item is required. The present invention relates to an analyzer.

  In the conventional automatic analyzer, as described in Patent Document 1, the reagent amount necessary for the analysis of the day is registered in advance for each analysis item, and the required amount of the reagent is required at the start of the analysis of the day. There is a function to check whether an appropriate amount of reagent is installed and to display an alarm.

JP-A-8-262031

  However, with this method, for example, when the number of requests for analysis items varies greatly depending on the day of the week or time, a correct check cannot be performed. Further, even if a function that enables registration for each day of the week or time is provided, the input becomes complicated and the work efficiency is lowered.

  In particular, in recent automatic analyzers, with the improvement of processing capability, reagent replacement and addition are frequently performed, and it is desired to reduce the burden on these operations.

  An object of the present invention is that there is no complicated input, and more accurate prediction of actual reagent replacement / addition time is possible, and the function of presenting the time to the operator is effective for efficient laboratory operation. The object is to provide an automatic analyzer with merit.

  In the present invention, the past analysis history is stored by linking the reagent consumption amount for each analysis item with information such as date, time zone and test type, and statistically processing them, thereby determining a judgment rule used for prediction. create. This judgment rule allows you to make more realistic judgments by accumulating daily analysis status and constantly updating it, but you want to exclude it from the data for creating judgment rules, such as when a unique test situation occurs. In some cases, it is desirable to allow the user to specify the analysis period for which the decision rule is adopted. Further, instead of creating a rule from the daily inspection results of the apparatus, a method may be adopted in which data created outside the apparatus can be registered.

  The created determination rule is stored in a non-volatile storage medium in the apparatus, and is executed according to the timing at which the reagent management screen is displayed and the timing at which the user gives a determination instruction. Judgment uses the specified day of the week, time zone, measurement item name, and current reagent remaining amount of the relevant reagent as input values for the judgment rule based on the stored data. The number of analysis items and the total amount of reagent used, and the amount of time the reagent that is currently in use is exhausted and must be replaced or added are output results. Multiple reagents for the same test item can be installed on the reagent disk, and when the remaining amount of one reagent container runs out, the automatic function that automatically dispenses from another reagent container of the same item In the analyzer, the total value of the reagent container remaining amount of the analysis item is managed as the reagent remaining amount, thereby enabling management in units of reagents.

  The predicted result of the reagent replacement time derived by the above determination is displayed on the screen. At this time, a method of displaying the time required for replacement on the screen or displaying the time required for replacement is conceivable. In addition, this display method is useful information for the user to make a plan for reagent replacement by displaying the reagent list displayed on the screen in the order of the time when replacement is necessary.

  Since the automatic analyzer of the present invention can accurately predict the reagent replacement time, the operator can perform the reagent preparation and replacement work in a planned manner, and there is an advantage that the work efficiency can be improved.

  DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, preferred embodiments of the invention will be described with reference to the drawings.

  FIG. 1 is a configuration diagram of an embodiment of the apparatus of the present invention, and is a schematic diagram showing an overall configuration of a multi-item chemical analyzer that analyzes a plurality of analysis items of a specimen sample by a photometric method.

  In FIG. 1, reagent containers 26 corresponding to a plurality of analysis items are installed on the reagent disk 31. The amount of reagent dispensed by the reagent dispenser 25 is processed by the computer 1 and stored in the hard disk drive 2 together with information such as date, day of the week, and time. The computer 1 stores reagent consumption transition data for each analysis item in the hard disk drive 2 according to each day of the week and time zone based on such information.

  The reagent remaining amount is calculated from the reagent consumption prediction data of each item stored in the hard disk drive 2 for each day and time period, the current date (day of the week), the time period, and the reagent remaining amount of the measurement item. A determination rule for calculating the time required for replacing and adding reagent containers is created.

  FIG. 2 shows an example of the transition of reagent consumption according to the time period of the number of analysis items on Monday of analysis item [AST]. As described above, the number of analyzes differs from time to time, and in the morning, a sample measurement request for an in-patient is generated, which is very large and decreases with time. In addition, when analysis of an outpatient is started in the afternoon, a peak of the number of analysis occurs again. Thus, the number of examinations is not constant depending on the time zone. There is also a tendency depending on the day of the week. For example, since there are many in-patient samples collected on Saturdays and Sundays, the number of analyzes is very large compared to other days of the week. Therefore, it is obvious that it is difficult to predict the time zone in which reagent replacement is necessary in the method of checking with one threshold value for each analysis item as in the method described in JP-A-8-262031. .

  FIG. 3 shows an example of a screen for displaying the determination result according to the present invention. Generally, on the reagent management screen of the automatic analyzer, the analysis item name, remaining amount, production lot, production serial number, expiration date, etc. are displayed for each position in the reagent disk. The device has been devised to attract the user's attention by displaying it at the top of the screen. In the present invention, in addition to such information, the predicted usage amount calculated by the computer 1 in the above description and the time when reagent replacement is required are displayed for each analysis item.

  For example, in the example of FIG. 3, AST analysis reagents are installed at two positions 1-1 and 1-2 in the reagent disk. Of these, the position 1-2 already has a remaining amount of 0, indicating that the position 1-1 has been used and the remaining amount is 100. On the other hand, based on today's analysis conditions, the predicted use amount calculated by the computer from the change in the use amount as shown in FIG. 2 is 200, and the predicted value that the reagent needs to be replaced near 14:30. Presenting. Similarly, ALT presents a predicted value that needs to be replaced at 15:00 and LD at 17:55. The list display on the screen is a user-friendly function by using means such as displaying from the top in the order in which reagent replacement is required, or changing the color depending on the time until the predicted replacement time.

  As described in the first embodiment, data and determination rules for predicting the reagent replacement time are registered on the hard disk drive 2. In the first embodiment, the data for predicting the reagent replacement time is created based on the day of the week and the time zone, while the consumption for each pre-registered analysis item described in claim 3 is used. A method of selecting from a combination of quantities will be described.

  This is an effective method when there is a characteristic in the type of examination regardless of the day of the week depending on the facility. For example, when regular medical examinations are performed, a large number of general test items are analyzed, and a set of test items characterized by diseases such as dialysis patients and infection patients may be analyzed in large quantities. Therefore, although not shown in the figure, a combination name indicating the tendency of the number of characteristic analysis items is registered on the screen displayed on the CRT 6, and when the combination is executed, a determination is made based on an instruction from the screen. The rule is updated, and the result is registered in the hard disk drive 2. The subsequent determination method and display method on the screen are the same as those in the first embodiment.

It is the schematic which shows the whole structure of the automatic analyzer which is one Example of this invention. It is the figure which showed transition of the number of analysis items at the time of taking the specific day [Monday] of a specific item [AST] as an example. It is the figure which showed the example which displays the prediction result of the replacement | exchange time of a reagent on a screen.

Explanation of symbols

1 microcomputer 2 memory area 3 hard disk drive 5 keyboard 6 CRT (display device)
7 Interface 19 Reaction container moving mechanism 20 Reaction container 21 Specimen container 22 Specimen moving mechanism 23 Specimen barcode reader 24 Specimen dispenser 25 Reagent dispenser 26 Reagent container 28 Reagent ID reader 29 Liquid level detector 30 Specimen container height Detector 31 Reagent disc

Claims (5)

Storage means for storing the amount of reagent consumption or the number of times of reagent consumption for each analysis item in time series;
An automatic analyzer comprising prediction means for predicting when replacement or addition of a reagent is required based on information stored in the storage means and information on a reagent remaining amount for each analysis item. The automatic analyzer according to claim 1,
An automatic analyzer characterized in that the prediction of the time when reagent replacement or addition is necessary is determined by at least one of the conditions of the month, day, day of the week, and time period when the analysis is performed. The automatic analyzer according to claim 1,
An automatic analyzer characterized in that the prediction of the time when reagent replacement or addition is required can be selected from a combination of consumption amounts for each analysis item registered in advance. The automatic analyzer according to claim 1,
An automatic analyzer having a function of displaying on a screen a reagent that needs to be replaced or added within a specified time by means different from other reagents. The automatic analyzer according to claim 4,
An automatic analyzer comprising means for displaying on a screen in order of a short time until replacement or addition is required.

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