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Chapter 2 Operating Principle
2.1 Overall Structure
The overall structure of the monitor is shown in Fig. 2.1.
Figure 2.1
PC-900 Vital Signs Monitor is module designed product; it consists of ECG/TEMP module
(optional), NIBP module (optional), SpO
2
module (optional), main control unit, printer module
(optional), display panel, and power supply block etc.
1. ECG/TEMP module measures ECG signal and detects heart rate with ECG lead wires and
electrodes, it also measures temperature with temperature probe.
2. The SpO
2
module detects and calculates pulse rate and oxygen saturation (SpO
2
), and
provides plethysmogram and perfusion index as well.
3. The NIBP module performs the measurement of blood pressure by non-invasive way of
oscillometric technology, including the diastolic, systolic and mean arterial pressure. The
cuffs are designed for adult, pediatric and neonate respectively.
4. The main control unit is in charge of LED and LCD display, keyboard input, data storage,
printing, and networking function.