Service manual

2-10 DINAMAP
®
ProCare Monitor Revision D
2009381-001
Equipment Overview: Overall Principles of Operation
Monitor is unable to find any pulse within several seconds, it will deflate to the
next step. The process of finding two matched pulses at each step provides
artifact rejection due to patient movement and greatly enhances the accuracy
of the Monitor. The figure shows the NIBP determination sequence.
NIBP Determination Sequence
At each step the microprocessor stores cuff pressure, the matched pulse
amplitude, and the time between successive pulses. The stepped deflation and
matched pulse detection continues until diastolic pressure is determined or total
cuff pressure falls below 7 mmHg. The Monitor then deflates the cuff (to zero
detected pressure), analyzes the stored data, and updates the screen.
The operating cycle is composed of four parts: inflation time, deflation time,
evaluation time, and wait time. Wait time, which varies from mode to mode, is
affected by the cycle time (auto mode) or operator intervention (manual mode).
The figure shows the basic operating cycle.
NIBP Operating Cycle