Principle Of Operation - Cardinal Health Alaris Directions For Use Manual

The t Module uses Oridion's patented Microstream
E CO
2
nondispersive infrared (
measure the amount of
of present at the end of exhalation (
CO
2
inhalation ( i ), and the Respiratory Rate. The
F CO
2
Module is a side stream capnograph.
The Microstream ® Disposables deliver a sample of the inhaled
and exhaled gases from the ventilator disposable or directly
from the patient (via an oral/nasal cannula) into the monitor
for measurement. Moisture and patient secretions are
CO
2
extracted from the sample by the Microstream
while maintaining the shape of the
The mL/min sampling flow rate reduces liquid and secretion
50
accumulation, decreasing the risk of obstruction in the sample
pathway in humid
ICU
eliminates the need for water traps and prevents excess fluid
accumulation.
The t Module draws a gas sample through a microsample
E CO
2
cell ( microliters). This extremely small volume is quickly
15
flushed, allowing for a rise time of approximately
accurate readings, even at high respiration rates.
CO
2
The Microbeam source illuminates the microsample cell
IR
and the reference channel. This proprietary
generates only the specific wavelengths characteristic of the
absorption spectrum. The
CO
2
the microsample cell and the
reference channel are measured by
The microcomputer in the
concentration by comparing the signals from both channels.
No operator intervention is required for routine moisture or
condensate.
®
All Microstream Disposables contain an inline hydrophobic
filter to extract condensate and/or patient secretions while
maintaining measurement and waveform integrity. For humid
conditions within the operating parameters of the
Module and Microstream
quantitative effect on the
mL/min sample size rate. In high humidity environments or
50
extended monitoring periods (
Disposables designed for those instances should be used.
®
Alaris System (with v9 Model 8000) DFU
EtCO Module Section
2

Principle of Operation

) spectroscopy to continuously
NDIR
during every breath, the amount
CO
2
t
E CO
waveform.
CO
2
environments. The small sample size
light that passes through
IR
light that passes through the
IR
detectors.
IR
t Module calculates the
E CO
2
®
Disposables, humidity has no
concentration, given the small
CO
2
- hours), only Microstream
24 72
®
) and during
2
t
E CO
2
®
inline filter
ms and
190
light source
IR
CO
2
t
E CO
2
®
5-25
General Information