JPH06142191A - Abnormality diagnosing method for dialysis monitoring device - Google Patents

Abstract

PURPOSE:To easily and quickly detect the function abnormality and fault of internal components of a dialysis monitoring device by operating the component to be inspect in the monitoring device compulsorily, and diagnosing the presence/absence of the function abnormality by measuring the operating state of dialysis solution changing corresponding to a compulsory operation and deciding whether or not a normal operating response can be obtained. CONSTITUTION:For example, in the test of the opening of an electromagnetic valve 1, a personal computer 32 transmits a compulsory operating instruction to close electromagnetic valves 6, 10 and to open electromagnetic valves 11, 27, and 15. then, a compulsory operating instruction to turn on the electromagnetic valve 1 and a pump 12. Then, the liquid pressure data of a pipeline detected at a pressure detection terminal P1 is acquired from a computer 30 for control, and the personal computer 32 compares pressure in the test with the one in a normal operation, and judges that abnormality occurs when difference, for example, of several % is recognized, and displays an abnormality comment, also, outputs comment display of normalcy when no difference exists, and records the test result of the opening of the electromagnetic valve 1 on an external memory device.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for diagnosing an abnormality in a dialysis monitor which can easily and quickly detect a functional abnormality or failure of an internal component of the dialysis monitor used when performing dialysis treatment using an artificial kidney. Regarding

[0002]

2. Description of the Related Art A dialysis monitor used for dialysis treatment is an important device for controlling and monitoring the flow state of blood and dialysate of a patient during dialysis. The dialysis monitor device measures, for example, the pressure of the dialysate, and when the measurement result exceeds a normal range, an alarm is generated and parts in the dialysis monitor device are automatically controlled so as to reduce the pressure of the dialysate. Ideally, this device should always work properly, but in reality it can fail during use. It is the technician who actually operates the dialysis monitor device first to actually operate the device at the treatment site. However, as the types and degrees of failures have diversified with the recent advances in performance and complexity of dialysis monitor devices, the number of cases that are out of the control of technicians is increasing, and maintenance personnel must arrive during treatment. Sometimes. Moreover, it is hard to say that the training of the maintenance staff itself is sufficiently compatible with the progress of the equipment. Further, the number of dialysis patients is also increasing, and there is a demand for an attempt to quickly deal with troubles of the dialysis monitor device.

[0003]

SUMMARY OF THE INVENTION In view of the above circumstances, the present invention is directed to a dialysis monitor device for rapidly and accurately detecting an abnormal circuit of the dialysis monitor device in order to remarkably reduce the burden on an engineer or a maintenance man. The purpose of the present invention is to provide a method for diagnosing abnormalities.

[0004]

In order to achieve such an object, the invention of claim 1 measures the operating state of the dialysate with a monitor, and based on the measurement result, the operating state is obtained by the monitor. In a method for diagnosing an abnormality in a dialysis monitor that monitors and controls the operation, a component to be inspected in the monitor is forcibly operated, and the operating state of the dialysate that changes according to the forced operation is measured, and the measurement is performed. It is characterized in that whether or not there is a functional abnormality in the component to be inspected is diagnosed by determining whether or not the result is a normal operation response.

According to a second aspect of the present invention, in the method for diagnosing an abnormality in a dialysis monitor apparatus, the operating state of dialysate is measured by a monitor apparatus, and the operating state is monitored and controlled by the monitor apparatus based on the measurement result. By forming a closed circuit for inspection in the dialysis fluid circulation system in the monitoring device, flowing the dialysate in the closed circuit, and comparing the operating state in the closed circuit with a predetermined normal state. It is characterized by diagnosing whether or not there is an abnormality in a component in the closed circuit.

According to a third aspect of the present invention, in addition to the second aspect, an external device instructs the monitor device to form the closed circuit, and the external device relates to the closed circuit obtained by the monitor device. It is characterized in that the presence or absence of the abnormality is diagnosed by using the measurement result as an operating state.

[0007]

According to the first aspect of the invention, the specific operation state of the component of the monitor device is forcibly created and the response result is measured to confirm the operation of the component.

According to the second aspect of the present invention, the abnormal portion is detected by limiting the specific range of the dialysate circulation system and monitoring the operating state. In addition, it is possible to prevent the influence on other normal parts due to the occurrence of abnormality.

According to the third aspect of the present invention, the preparation process for the abnormality diagnosis (instruction for forming the closed circuit) and the abnormality diagnosis are executed by the external device, so that the operation content of the monitor device is not complicated.

[0010]

[Examples] Artificial kidney dialysis machines have a method of removing water from blood by applying positive or negative pressure to the artificial kidney. Further, the negative pressure method regulates the inflow and outflow of dialysate into the artificial kidney. The volume formula is used as a general method.
Although the present invention can be applied to both of them, an embodiment of the present invention will be described in detail below with reference to the drawings by taking a chamber volume type as an example.

FIG. 1 shows the system configuration of an embodiment of the present invention.

The example of FIG. 1 shows a processing flow called a bedside monitor in a system in which a dialysate is separately prepared and supplied with the dialysate. Explaining the water removal of this dialysis system, the dialysate produced outside is operated by the manual valve 2
It controls the passage of dialysate feed water through the solenoid valve 1 through the solenoid valve 8. Whether or not water is supplied is determined by monitoring whether or not there is liquid pressure with the pressure switch PS.

Next, the throttle 2, the pump 3, the liquid heating heater 4, the degassing tank 5, and the relief valve 13 are used to remove the air in the dialysate sent. Make up. The throttle 2 may have an orifice in the flow path, or may simply have a manual valve. As the pump 3, a gear pump or the like having a quantitative property is used. The liquid heating heater 4 uses a heater in which the dialysate is indirectly heated by converting external electric energy into heat to the same degree as the human body temperature.

Then, the temperature of the pipe is detected at the temperature detecting end of T2, and control is performed via an input / output interface 33 including an A / D converter (not shown) for converting an analog signal converted into an electric signal into a digital signal. Computer 3
Lead to zero. The control computer 30 controls the electric power of the liquid heating heater 4 to keep the temperature of the pipeline constant until the temperature reaches a given set value according to a program prepared in advance. Here, a platinum resistor, a thermistor, a thermocouple, or the like is used as the temperature detecting end T2 and the temperature detecting end T1 for monitoring the temperature at the point F of the conduit. The control computer 30 sequentially reads and executes the program code written in the PROM (Read Only Memory) with 8 or 16 bits. A general microcomputer set is used for the control computer 30.

The deaeration tank 5 separates liquid from air bubbles, and when a certain amount of air is accumulated, the float with valve of the closed tank lowers to release air, and the float with valve rises to be a closed tank. The relief valve 13 may be of a type that is located in a bypass line that returns from the pipe line A to the water supply side of the throttle 2 and whose return amount can be adjusted by adjusting a spring inside the relief valve 13. With the above configuration, the dialysate supply water is heated to the body temperature and deaerated here.

Then, this dialysate is supplied to the liquid supply metering unit 18, and a fixed amount is supplied to the dialyzer 8 via the electromagnetic valve 6. The solenoid valve 27 is used for bypassing the liquid supply metering unit 18. The drainage from the dialyzer 8 is passed through the solenoid valve 10 to give a negative pressure to the dialyzer 8 so that the pump 1
Lead to 2. In addition, a throttle valve 16 is provided in the return line of the bypass from the pump 12, the deaeration tank 14, and the line H to adjust the return amount of the dialysate and to return the liquid to the liquid supply portion of the pump 12. The air contained in is removed.

The degassing tank 5 is usually a closed tank. The deaeration tank 5 is provided with a float switch 29. When the air is accumulated in the tank, the float position of the float switch 29 is lowered, and the float switch 29 is turned on in conjunction with this. As a result, the solenoid valve 15 is opened to release the air in the tank. When there is no air in the tank, the float rises and the switch is turned off to close the electromagnetic valve 15 and close the deaeration tank 14.

The drainage of the conduit H that has been deaerated is the drainage determination unit 17
The fixed amount becomes wastewater. Here, if the fixed amount of the discharged liquid fixed amount part 17 is larger than the fixed amount of the liquid supplied fixed amount part 18, the difference will be
Water is removed from the blood of the human body 9 via the.

The blood of the human body 9 is pressurized by a blood pump 19 (a tube ironing type is used), guided to the dialyzer 8 via the conduit I, and returned to the human body 9 via the conduit J.

FIG. 2 shows the details of the fixed quantity unit commonly used for the liquid supply fixed quantity unit 18 and the discharged liquid fixed quantity unit 17. Explaining this, the three-way solenoid valves 20, 2 are provided at the respective entrances and exits of the chamber container 23 partitioned by the movable partition wall 22.
One end of 1 is connected and the ports of the other two solenoid valves are respectively connected to be used as a metering part inlet 24 and a metering part outlet 25. When the solenoid valve 20 communicates with the L-shaped passage, the solenoid valve 2
The flow paths of the solenoid valves 20 and 21 are set to be opposite to each other so that 1 is a straight flow path.

First, the liquid from the inlet 24 of the metering portion is pushed into the right side of the chamber 23 (in the figure) through the straight flow passage of the solenoid valve 21. On the contrary, the liquid pushed by the movable partition 22 is discharged from the left side of the chamber 23 (on the drawing) through the L-shaped passage of the electromagnetic valve 20. Reference numeral 26 denotes a flow sensor, which is an optical type switch, a magnetic type switch, or an electrostatic capacitance type switch that is not turned on by being pushed by the fluid if there is a fluid in the pipe. Here, when the movable partition wall 22 in the chamber 23 is pushed by the fluid and pushed to the left side (upper side in the drawing), the chamber 23 becomes full and the fluid in the straight flow passage of the solenoid valve 21 is stopped. Then, the flow sensor 26 is turned on and it can be detected that the chamber 23 is full.

Therefore, by switching the L-side passage of the solenoid valve 20 to the straight passage and the straight passage of the solenoid valve 21 to the L-shaped passage at the boundary of the detected ON signal of the flow sensor 26, the chamber is changed. In 23, the fluid is pumped from the left side (upper side in the figure), and the movable partition 22 is pushed to discharge the liquid on the right side (upper side in the figure). As a result, a constant flow rate proportional to the capacity of the chamber and the pressure of the pipeline flows in the pipeline.

For monitoring, a pressure detecting end P1 (pressure-electric signal converter) for detecting fluid pressure in the conduit and a pressure detecting end P2 (pressure-electric signal converter) for detecting venous pressure in the blood circuit are usually semiconductor strain gauges. used. Then, an analog value is converted into a digital value by an A / D converter included in the input / output interface 33 outlined, and is guided to the control computer 30 to be supervised and controlled.

The target of input / output control such as the sensor and solenoid valve described above is the control computer 30.
In accordance with the instruction of, the overall control is performed through the input / output driver in the input / output interface 33. The control computer 30 checks the input signal received via the input / output interface 33 and outputs an output signal corresponding to the input signal to the input / output interface 33. These controls are implemented by a program built in the control computer 30.

A description will be given below of the auxiliary device for maintenance, which has been described so far, for the purpose of finding a malfunction in the operation of each part of the input / output control target and identifying the abnormal part.

One dialysis (monitor) device for artificial kidney
Since it is necessary to have a table, it is necessary to reduce the cost as much as possible, so it is a good idea to provide system control processing that is not normally required for dialysis as much as possible. Therefore, only the control monitoring program described above is registered in the control computer 30.
The control computer 30 of FIG. 1 is connected to an external computer 32 via a communication interface 31. The external computer 32 incorporates the program of FIG. 4 for testing the malfunction of the parts, and the computer 30 for controlling the dialysis machine sets each control target (solenoid valve etc.) by a forced operation command from the external computer 32. Manipulate. The measurement result input to the control computer 30 is transferred to the external computer 32.

The external computer 32, as an external device of the present invention, determines whether there is an abnormality based on the measurement result, displays the result on a display, and stores it in a floppy disk or the like.

Therefore, the external computer 32 is preferably a personal computer having a display or an external storage device.

An example of a method of testing each part using such a system will be described with reference to FIGS.

FIG. 3 shows a control procedure executed by the control computer 30, and FIG. 4 shows a control procedure executed by an external computer (hereinafter referred to as a personal computer) 32.

A) Test of solenoid valve 1 The operator instructs a test mode from an operation panel (not shown) connected to the control computer 30 (S1 in FIG. 3).
0). In response to this mode instruction, the control computer 3
0 shifts to the test mode (S20 → S30 in FIG. 3),
A specific component is operated by the forced operation command of the personal computer 32 (S100 in FIG. 3). Next, the measurement instructed by the personal computer 30 is performed, and the measurement result is transmitted to the personal computer 32 (FIG. 3).
S120).

On the other hand, in the personal computer 32,
Test the parts to be tested in the dialysis machine according to a predetermined order.

A-1) Test for opening solenoid valve 1 The personal computer 32 uses a solenoid valve 6, solenoid valve 10 is closed, solenoid valve 11, solenoid valve 27, solenoid valve 15 is opened, and a forced operation command is issued. A forced operation command to turn on the solenoid valve 1 and the pumps 1 and 2 is transmitted (S210 in FIG. 4). Such an instruction forms a closed circuit in the dialysate circulation system of FIG. Next, after waiting for 3 minutes, the hydraulic pressure data of the pipeline in which the hydraulic pressure of the pipeline is detected at the pressure detection end P1 is acquired from the control computer 30 (S220 → S230 in FIG. 4). The pressure data for normal operation is the personal computer 3
It is stored in advance in 2. Next, the personal computer 32 compares the pressure at the time of test with the pressure at the time of normal operation,
For example, if there is a difference of about several percent, it is judged to be abnormal and an abnormal comment is displayed. If there is no difference, a comment is displayed as normal (S240 → S250 in FIG. 4).

Further, the test result of the opening of the solenoid valve 1 is recorded in the external storage device.

FIG. 3 for the test items described below.
The processing procedure of FIG. 4 is the same as the above-described test processing procedure, and therefore the description related to FIGS. 3 and 4 will be omitted.

A-2) Test for closing the solenoid valve 1 After completion of the above-mentioned open test, the personal computer 32 issues a command for closing the solenoid valve 1, and then the pumps 3, 12
Command to turn off, and the main valve 2 for liquid supply outside the device
Display a comment to close 8 manually. Then, after inputting the fact that the main valve is closed from the keyboard, the personal computer 32 acquires the on / off data of the pressure switch PS for supplying liquid every tens of seconds and stores it in the internal memory. The on / off data is checked for several minutes, and if the pressure switch PS is not turned on, the solenoid valve 1 displays a normal message, and if it is turned on, the solenoid valve 1 is displayed as a comment message.

B) Closing test of solenoid valve 27: The solenoid valve 1, the solenoid valve 27, the solenoid valve 11, and the solenoid valve 15 are opened according to an instruction from the personal computer 32, and the three-way solenoid valves 20, 3 directions of the liquid supply metering portion are opened. A command to close the solenoid valve 21, 3-way solenoid valve 20, 3-way solenoid valve 21, 3-way solenoid valve 6 and solenoid valve 10 of the drainage fixed amount section, and a command to turn on the pump 3 and pump 12 are issued. Wait for a minute to drive. Next, a command to close the solenoid valve 1, the solenoid valve 27, and the solenoid valve 15 is issued, and then a command to stop the pump 3 and the pump 12 is issued. At this point, a message is displayed from the personal computer to manually close the water supply source valve 28, and a comment is displayed so that the connecting pipe between the source valve 28 and the solenoid valve 1 is removed. From that point on, the personal computer 32 stores the dialysate pressure data at the pressure detection end P1. Further, a command to open the solenoid valve 1 is issued, the dialysate pressure data is acquired again after a few minutes, and the solenoid valve 27 is closed if there is no difference compared with the measured pressure data before the solenoid valve 1 was opened. Is judged to be good. If there is no abnormality in other parts, it is commented that the closing operation of the solenoid valve 27 is normal.

C) Test of three-way solenoid valve 20, 3 way solenoid valve 21 of liquid supply fixed quantity part, 3 way solenoid valve 20, 3 way solenoid valve 21 of drainage fixed quantity part From dialyzer 8 at the time of normal dialysis execution The interval at which the signal of the flow sensor 26 turns off when the water removal is zero is measured from several times to a dozen times for both the liquid supply fixed quantity part and the discharged liquid fixed quantity part, and the values are averaged to obtain a personal value as a reference value. It is stored in the computer 32. Then, at the time of the test, the interval at which the flow sensor 26 is turned on is measured, and compared with the reference value that has already been measured and stored. If there is no difference, a comment display indicating that there is no abnormality such as each solenoid valve is displayed. The difference is, for example, 0. If more than a few percent, an error and a comment will be displayed.

D) Test for poor closing of solenoid valve 15 When the water removal from the dialyzer 8 during normal dialysis is zero, the signal from the flow sensor 26 is switched from ON to ON at intervals of several to ten or more times. The measured value is averaged and the reference value is stored in the personal computer, for example, 15 seconds when the flow rate is 500 ml / min.
Then, at the time of executing the test of the solenoid valve 15 before dialysis or the like, the interval average value from ON to ON of the flow sensor 26 is acquired and compared with the reference value in the personal computer 32. If the difference is small, a comment is displayed indicating that the closure is not recognized as being poor. At this time, for example, 0. If there is a difference of several% or more, it is judged that there is something wrong in the interval value measuring circuit, and a comment prompting a check of this circuit including the improper closing of the solenoid valve 15 is issued.

E) Test for opening failure of solenoid valve 5 A needle (not shown) that bypasses the dialyzer 8 is attached to create a reference value, and the needle at the base of the liquid outlet side silicon tube of the holder is filled with about 30 ml of air. Display a comment as if you are sticking a syringe.
Further, the solenoid valve 1, the solenoid valve 27, the solenoid valve 6, and the solenoid valve 10 are opened according to an instruction from the personal computer 32.
Next, a command to close the solenoid valves 11 and 15 is given, then a command to turn on the pumps 3 and 12 is issued, and then a command to wait for operation for about 2 minutes is given, and then the air in the syringe is dialyzed. Instruct to fill all liquid circuit.

Then, the fact that the operation has been carried out is made to be recognized by the personal computer 32 by key input or the like, and from this time, the float switch 29 is pushed to the personal computer 32.
Float switch 2 by repeatedly acquiring the on / off signal of
The response until 9 is turned on is measured, and the response until the float switch 29 is turned off is acquired and stored in the personal computer 32 as a reference value. At the same time, the personal computer causes the operator to confirm that the solenoid valve 5 is opened and closed by displaying a comment by sound or feel. Next, when the condition of the solenoid valve 15 is abnormal, this test is performed again, the response of response until the float switch 29 is turned on and off is measured, and the difference is compared with the stored response at normal time. It is configured to output a comment as to whether it is normal or abnormal.

This test also serves as a test for the float switch 29.

F) Preparation for Closing Test of Solenoid Valve 6, Solenoid Valve 10 and Solenoid Valve 11 The dialysate inlet / outlet was connected to the dialyzer 8 and the blood side was closed with forceps, or connected to the bypass holder of the dialyzer. After displaying a comment confirming that there is on the personal computer 32, and the personal computer 32 side recognizing the comment manually by the operator,
Furthermore, solenoid valve 6, solenoid valve 1, solenoid valve 27, solenoid valve 15,
The personal computer 3 issues an instruction to open the solenoid valve 11.
Then, a command to turn on the pump 3 and the pump 12 is issued. The opening and closing of the three-way solenoid valves of the liquid supply fixed amount part and the drained liquid fixed amount part are not held, and the pressure detection end P
In step 1, data is acquired at 30-second intervals to confirm that the fluid pressure is stable from ± 5 mmHg to several tens of mmHg (no fluctuation), and then the next test is performed.

F-1) Test for closing solenoid valve 4 Solenoid valve 6, solenoid valve 10, solenoid valve 27 are closed and solenoid valve 11
A command is issued from the personal computer 32 that opens, the liquid pressure (negative pressure) is measured by the pressure detection end P1 after waiting for 30 seconds, and stored in the personal computer 32. Next, a command is issued to close the solenoid valve 11 and open the solenoid valve 27. After waiting for 60 seconds, the fluid pressure data after 1 minute is acquired again by the detection end P1 and the pressure difference of the difference is 10 m.
When the pressure is less than mHg, the data is acquired again after 30 seconds and compared with the initially stored pressure. If there is a difference of 5 mmHg or more, the solenoid valve 11 displays a comment of failure. Also the pressure difference is 1
Immediately, a comment of 0 mmHg or more is issued. In particular, if there is no pressure difference, a comment indicating no abnormality is displayed.

F-2) Closing Test of Solenoid Valve 6 and Solenoid Valve 10 After the test of the solenoid valve 11 is completed, the test is repeated from the first test preparation stage. A command for closing the solenoid valve 11, the solenoid valve 27, the solenoid valve 6, and the solenoid valve 10 is issued from the personal computer 32. After waiting for 20 seconds, pressure detection end P1
The hydraulic pressure data is acquired by and is stored in the personal computer 32 (first hydraulic pressure). Next, the solenoid valve 27 is opened, then the solenoid valve 10 is opened, and 20 seconds later, the hydraulic pressure is acquired again at the pressure detection end P1 (second hydraulic pressure), then the solenoid valve 10 is closed and the solenoid valve 6 is then closed. Is opened and 20 seconds later, the third hydraulic pressure is acquired and stored. And personal computer 3
In step 2, the measured liquid pressure and the reference value are compared, and the following is displayed as a comment corresponding to the following comparison result.

Result: If the difference between the first and second times is zero or minute, the solenoid valve 2 is completely closed. If the difference between the second and third times is zero or minute, the solenoid valve 3 is completely closed. If there is a large difference between the two, a comment will be displayed indicating that the closing is incomplete.

The above description has been made by taking the test of the solenoid valve as an example. However, for other parts such as around the deaeration tank and around the deaeration tank, various detection ends can be prepared if necessary. Needless to say, it is possible to confirm the operation and identify the defective portion as in the solenoid valve described above.

G) Test of pressure detection end P1 and comparison of drain side back pressure measurement At the time of the first installation of the dialysis device or when the device is operating normally, the personal computer 32 issues an instruction to open all solenoid valves and the pump 3 , 12 are stopped, and a comment is displayed so that the drain side dialyzer side is also open to the atmosphere. The personal computer 32 is entered by inputting information on the execution of this processing.
After that, the hydraulic pressure data is acquired at the pressure detection end P1 and stored in the personal computer 32 in advance as the initial drainage back pressure. Then, before performing dialysis, the liquid pressure is measured again by the above-mentioned method and compared with the initially stored initial drainage discharge pressure value, and if there is a difference of several%, an abnormal comment is displayed together with the measured value. If the difference is small, a normal comment is displayed. The pressure detecting end P2 can be tested in the same manner as the detecting end P1 by opening the detecting end to the atmosphere.

Similarly to the above, regarding the temperature detecting ends T1 and T2, the liquid temperature adjustment for the purpose of use and the check of the temperature monitor are compared with each other, and the normal value of the device is stored. It can be used in the same manner as the test of the other already-described parts by constructing it by the method of comparing with the value at the time of test.

As described above, by adopting the abnormality detecting method of the present invention, even if some operation abnormality occurs during use of the dialysis monitor, the technician can suspect that the abnormality diagnosing device is defective. Since you can immediately know the faulty part just by inputting about, you can immediately replace or repair parts, and you can take prompt and correct action without panic.

When applying the abnormality detecting method of the present invention, it is sufficient to prepare one abnormality diagnosing device for a plurality of dialysis monitor devices. Even if the plurality of dialysis monitor devices are of different models, it is sufficient to incorporate a program for checking the operation abnormality of each device component into one abnormality diagnosis device. Moreover, since each dialysis monitor device only needs to be provided with means for communicating with the abnormality diagnosis device, the size, structure complexity, and cost control of the device can be improved compared to the case where each abnormality diagnosis function is installed. Excellent in all aspects of sex.

The present invention is also suitable for those which are originally installed in each dialysis machine and are tested before the dialysis of the patient to make a preliminary diagnosis of the operation of the parts of the machine and confirm the safety. Is. However, if parts for operating these are installed in the dialysis machine, the operation panel of the machine becomes complicated and the person who operates the machine, that is, the nurse, cannot handle it, and the cost of the dialysis machine is reduced. It is not preferable because it will be raised. Therefore, the system configuration as in the present invention solves these problems, and provides a useful means such as enabling failure diagnosis of parts of the apparatus even by a skilled engineer.

In addition to this embodiment, the following example can be carried out.

1) In this embodiment, the external computer (personal computer) 32 transmits a test forced operation command via the control computer 30 for operation control, but not the control computer 30. , The external computer 32 to the input / output interface 33 of FIG.
It can also be configured to be connected to.

2) In this embodiment, the control computer 3
Although the external computer 32 is made to execute the operation control for the test in order to reduce the size of 0, the control computer 30 may of course be made to execute the operation control for the test.

3) In the present embodiment, when the test is executed, the dialyzer parts which require manual operation and the operation contents are displayed as comments to the operator. However, in order to inform the operator of the test contents. The parts automatically operated by the external computer 32 can also be displayed.

4) The test target can include not only the control system such as the solenoid valve and the sensor but also the operation state of the switch on the operation panel. In this case, the operator operates the switch, and as a result, the operation response of the dialyzer obtained is confirmed by the external computer 32.

[0058]

As described above, according to the present invention, the abnormality of the dialysis monitor device and the cause of the abnormality can be automatically diagnosed, so that the operator's labor for detecting abnormality can be reduced.

[Brief description of drawings]

FIG. 1 is a block diagram showing a circuit configuration of a dialysis monitor device according to an embodiment of the present invention.

FIG. 2 is a structural diagram showing a detailed structure of a constant (flow) amount section of the present embodiment.

3 is a flowchart showing a processing procedure of a control computer 30 of FIG.

FIG. 4 is a flowchart showing an abnormality diagnosis procedure of the external computer 32 in FIG.

[Explanation of symbols]

 1 Solenoid valve 2 Throttle 3 Pump 4 Heater 5 Degassing tank 6 Solenoid valve 7 Connector 8 Dializer 9 Human body 10 Solenoid valve 11 Solenoid valve 12 Pump 13 Relief valve 14 Degassing tank 15 Solenoid valve 16 Throttle valve 17 Discharged liquid quantitative part 18 Liquid supply fixed amount part 19 Blood pump 20 Three-way electromagnetic valve 21 Three-way electromagnetic valve 22 Movable partition wall 23 Chamber 24 Fixed amount part inlet 25 Fixed amount part outlet 26 Flow sensor 27 Electromagnetic valve 28 Main valve 29 Float switch P1 Pressure detection end P2 Pressure detection End T1 Temperature detection end T2 Temperature detection end PS Pressure switch 30 Control computer 31 Communication interface 32 External computer 33 Input / output interface

Claims (3)

[Claims] 1. A method for diagnosing an abnormality in a dialysis monitor, wherein the operating state of dialysate is measured by a monitor, and the operating state is monitored and controlled by the monitor based on the measurement result. Forcibly operating the parts of the, the operating state of the dialysate that changes according to the forced operation is measured, and the measurement result determines whether or not a normal operation response is obtained. A method for diagnosing an abnormality in a dialysis monitor, which comprises diagnosing the presence or absence of functional abnormality in a part. 2. A method for diagnosing an abnormality in a dialysis monitor, wherein the operating state of dialysate is measured by a monitor and the operating state is monitored and controlled by the monitor based on the measurement result. In the liquid circulation system, a closed circuit for inspection is formed, dialysate is caused to flow in the closed circuit, and the operating state in the closed circuit is compared with a predetermined normal state, thereby A method for diagnosing an abnormality in a dialysis monitor, which comprises diagnosing whether or not there is an abnormality in a component of the above. 3. An external device instructs the monitor device to form the closed circuit, and the external device uses the closed circuit-related measurement result obtained by the monitor device as an operating state to determine whether the abnormality exists. The method for diagnosing an abnormality of a dialysis monitor device according to claim 2, wherein diagnosis is performed.