System Safety Checks - CME BodyGuard 121 Twins Operator's Manual

System Safety Checks

The following details outline the safety checks designed into the BodyGuard 121 Twins infusion
system in order to minimize the possibility of under or over infusions.
Anti-Bolus Function
The anti-bolus function is designed to reduce the bolus that may occur upon the release of an
occlusion following a downstream occlusion alarm. Upon the detection of a downstream occlusion,
the alarm is activated and the pump returns the IV line pressure to neutral within 15 seconds.
Neutral line pressure is achieved by the reverse operation of the pumping mechanism, and
measurement of the IV line pressure through the in-line pressure detection system.
Air-in-Line Accumulation
To improve the detection of air in the IV line, the BodyGuard 121 Twins Infusion system utilizes an
air-in-line accumulation system in addition to the standard single bubble detection. This feature
monitors the volume of air that passes through the IV line by accumulating the volume of individual
bubbles of 1 ml over a moving window of 15 minutes. The limit is not configurable. Although an
individual bubble may not exceed the pre-programmed threshold, the cumulative volume of bubbles
of 1-milliliter volume may exceed the limit during the 15 minutes window and initiate an air-in-line
alarm. This accumulation feature is particularly useful with infusions for patients who are highly
sensitive to air (i.e. infants, neonates, children) or when infusing products that create significant
volumes of small air bubbles.
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