Trio™ Operating Instructions
0070-10-0666-01
6 - 11
Appendix
Patient Parameter Specifications
6.2.6.5
NIBP Sub-System Functional Requirements
Maximum Cuff Pressure
The software controlled over pressure monitor will vent to atmosphere if the following cuff
pressures are detected:
Under single-fault conditions, the hardware controlled over pressure mechanism will vent the
cuff to atmosphere so that the pressure in the cuff does not exceed the following:
Cuff Inflation
The inflation source is capable of supplying sufficient air to bring a volume of 500 cc's to a
pressure of 300 mmHg in no more than 20 seconds.
If the cuff is not inflated 5 mmHg within 18 seconds then the cuff is vented and the
measurement is stopped.
Maximum Leakage
The maximum allowed pressure drop with the bleed valves closed is 6 mmHg in 60 seconds
as measured with a 500 cc volume at differential pressures of 250 mmHg, 150 mmHg and
50 mmHg.
Vent Rate
A volume of 500 cc, when vented, is reduced from a pressure of 260 mmHg to a pressure of
15 mmHg in a maximum of 10 seconds.
Initial Conditions
An NIBP Zero is performed automatically before the NIBP can be initiated.
An NIBP measurement will not initiate until the unit has been powered ON for 5 seconds in
order to allow time for the Zero.
NIBP Start Pressure Settings and Ranges
The Start Pressure is automatically adjusted based on the selected patient size and is set to
the following defaults:
ADULT MODE
PEDIATRIC MODE
≥
300 mmHg
≥
243 mmHg
ADULT MODE
PEDIATRIC MODE
300 (+10%) mmHg
300 (+10%) mmHg
PATIENT SIZE
PRESSURE INCREMENT
(DEPENDING ON ALGORITHM)
DEFAULT START PRESSURE
Adult Mode
30 – 60 mmHg
178 ±5 mmHg
Pediatric Mode
30 – 60 mmHg
133 ±5 mmHg
