Multi-parameter monitors are common medical equipment in hospitals and health teams. They are precision emergency instruments that can detect multiple physiological parameters of patients in real time. Common monitoring parameters include electrocardiogram, respiration, body temperature, blood pressure, blood oxygen saturation, and pulse rate.

In addition, there are other optional monitoring parameters such as end-tidal carbon dioxide, respiratory mechanics, anesthetic gas, cardiac output, bispectral index, etc. The monitor can automatically track and capture the patient's dynamic, changing data with clinical value based on the patient's current physiological basic data and automatically store it without manual settings, effectively reducing the workload of medical staff.

Maintenance methods

1. Do not use the monitor in places with flammable gases.
2. When the patient's body is connected to other devices, it should be noted that the total leakage current may exceed the allowable limit and cause danger to the patient.
3. Set the alarm limit correctly. It is not recommended to turn off the alarm sound of the monitor.
4. Regularly observe the patient's skin where the electrode is adhered, and regularly change the electrode and the position of the electrode to prevent skin damage.
5. Fix the electrodes and wires to avoid the electrodes falling off or the wires being bent, twisted, or entangled to avoid interference. Please make sure to connect the ground wire.
6. If the monitor is equipped with batteries, the batteries should be removed when they are not used for more than 3 months.
7. When the battery is used or stored for more than 3 months, the battery should be optimized. The optimization process is: uninterrupted charging, then discharging until the monitor is turned off, and then uninterrupted charging.
8. The performance of disposable accessories equipped with the monitor will be reduced or may cause contamination after use, so it is prohibited to use them again.
9. If liquid flows into the monitor, stop working immediately and restart it after inspection by a technician.
10. If the accuracy of the values displayed on the monitor screen is questionable, other methods should be used to reconfirm the patient's vital signs and confirm whether the device is performing properly.
11. After the monitor has been used for 6-12 months continuously, or after repair or upgrade, it should be quality inspected by a maintenance technician and can only be used after passing the inspection.

Precautions for use

1. The monitor should be cleaned and disinfected twice a week, using a clean, soft cloth, sponge, or cotton ball;
2. Before cleaning the equipment, the machine must be turned off, and the power supply must be disconnected;
3. Do not immerse the device in water or any cleaning agent, and do not sprinkle water or cleaning agents on the surface of the device;
4. High-pressure or high-temperature disinfection of the monitor and its accessories is not allowed.
5. Do not use gas or formaldehyde for disinfection;
6. Do not use batteries other than those specified by the manufacturer to avoid damaging the machine;
7. After cleaning the power cord and other wires of the monitor, wind them neatly and do not fold them to avoid damaging the cables.
8. Recommended disinfectants include 75% ethanol, 70% isopropyl alcohol, and 2% glutaraldehyde solution.

Common troubleshooting

Fault phenomenon: When the machine is turned on, there is no display on the screen, and the panel indicator light is off.

Solution: When the power is off, first check whether the rechargeable battery is exhausted or damaged. If the battery is exhausted, charge it. If the battery is damaged, replace it. When the machine is connected to AC power, check whether the power cable is in good contact and whether the fuse is intact.

Fault phenomenon: No ECG waveform or significant interference in the ECG.

Solution: Check whether the lead wire is detached, whether the lead wire electrode is in good contact with the human body, whether the machine is reliably grounded, and whether the ECG module is damaged or in poor contact.

Fault phenomenon: The measured blood pressure value deviates greatly from the actual value.

Treatment: Check whether the blood pressure cuff is leaking, whether the pipe interface connected to the instrument is leaking, and whether the cuff is in the correct position. Solution: Replace the cuff and connector and readjust the cuff position.

Fault phenomenon: The blood oxygen value cannot be measured.

Treatment method: Check whether there is a red indicator flashing in the finger probe, check whether the wiring is in poor contact, whether the blood oxygen probe is too loose or too tight, and whether the patient's arm is pressed by foreign objects. Solution: If there is no red indicator flashing in the finger probe, it is generally caused by poor contact or breakage of the wire interface. Reconnect the wire, re-clamp the blood oxygen probe, and observe whether the blood oxygen recovers after removing the foreign object in the patient's arm.

As an important part of medical equipment, the normal operation of multi-parameter monitors is crucial to the life safety of patients. Regular maintenance and timely troubleshooting can effectively extend the service life of the equipment and ensure the accuracy and reliability of monitoring data.

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