dtertz's blog

The ECG monitor can continuously monitor the ekg monitor of the patient for 24 hours, providing the basis for the doctor to further diagnose and treat the emergency. However, due to the product characteristics of the device, the ECG monitor is prone to some problems in clinical use. Therefore, some problems may occur during the use of the small series of ECG monitors specially listed for you. helped.

Fault 1: Power supply or power supply system circuit failure

Fault phenomenon: The fault phenomenon of the monitor is usually that the power indicator light is not on, there is no response when pressing the power button, and it cannot be turned on.

Failure analysis and treatment: The reasons for the failure of the power supply or power circuit of the monitor are usually: (1) The damage of the power cord causes the monitor to fail to supply power. and (2) burnout of electrical components due to partial short circuit caused by excessive dust inside the power board. After the monitor reports that the power cannot be turned on, first check the power cord for damage. Use a multimeter to measure whether the two ends of the power cord are on or off, or judge whether the power cord is damaged by measuring whether the power supply voltage is as high as 220V. If both ends of the power cord are disconnected or the power supply voltage cannot reach 220V, the cause of the fault can be judged as the power cord damage. This problem can be solved by replacing the power cord. If the power cord is not damaged, remove the machine to check for a faulty power board, shorted or damaged components. Usually after disassembly, it will be found that some parts of the power board are burned out due to short circuit, and there will be obvious black marks on the power board. After measuring with a multimeter, further confirm the burned parts, and then replace the corresponding parts.

Fault 2: Heart failure

Fault phenomenon: ECG module faults often occur during the use of ECG monitors. Common faults include unexpected waveforms after wiring, "signal reception is not in place", "electrodes fall off", "signal interference is too large" and so on.

Fault analysis and processing: The ECG signal of the PM8000 type ECG monitor has two main sources: ECG and SPO2. If there is no ECG waveform after the ECG lead wire is connected, it is usually considered that the source of the ECG is adjusted to SPO2. When changing this development situation, these problems can be effectively solved by adjusting the ECG source to ECG or automatic file through the market. In addition, the ECG module of our current monitor is usually designed in three-lead mode. If the information system management mode is adjusted to five-lead, there will be no waveform data display after the lead is connected. If the electrode pads are not properly attached or the long-term use of the lead wire may affect the network signal interference too much. When this kind of environmental problem occurs, a new lead wire can be replaced by an alternative method to observe whether the ECG waveform is improved. If there is still too much signal interference, it can be used as a judgment to study the problem on the electrode pads. At this time, the electrode pads can be re-attached; if the signal input and output equipment is normal, it can usually be judged that the lead wire is worn out. At this time, the teacher needs to replace the heart. Electrical lead wires.