Personal Ambulatory Oxygen System
Provider Technical Manual
17
CONTINUOUS FLOW MODE
Continuous Flow Mode delivers a constant flow of oxygen to a patient by means of tubing and a nasal cannula at rates
between 0.5 LPM and 3.0 LPM. Within the Eclipse, concentrated oxygen is stored in a 500ml product tank at pressures in the
range of 5 to 9 psi. This pressure gives Continuous Flow Mode the capability to deliver the indicated flow rate to the patient
even if extension tubing is used, up to 50 feet long. In addition, the Eclipse Continuous Flow Mode is fully compatible with
humidifier use, with NC not exceeding 7 ft.
PULSE DOSE MODE
The Eclipse Pulse Dose Mode delivers a measured bolus of oxygen at the very beginning of each inspiration. The approach
is based on the manner in which gas is absorbed into a patient’s airway. Eclipse users may select pulse dose volume delivery
rates. Regardless of setting, the pulse profile is a simple square-wave pulse based on a 16 mL volume. (Refer to “Pulse Profiles”
table below). Pulse durations are no less than 100 milli-seconds at the beginning of the inspiration. There are three Rise Time
settings (Slow, Medium, and Fast). The table below is for the FAST Rise Time setting (factory default is Fast).
Flow
Setting
Pulse Peak Flow,
LPM (volumetric)
Pulse Duration
(milli-second)
Bolus
Volume (ml)
1
8
120
16
2
9
213
32
3
10
288
48
4
11
349
64
5
12
400
80
6
13
443
96
128
15
512
128
160
17
565
160
192
19
606
192
Pulse Profiles
The fundamental approach to triggering and controlling the oxygen bolus in Pulse Dose Mode is as follows:
The User may select a pulse trigger sensitivity in settings ranging from 1-3. Bolus volume should be prescribed by a physician
and may range from 16mL up to 192mL. The pulse will be triggered when the system meets all of the following criteria:
•
The cannula pressure has dropped below the trigger point (typically between 0.15 and 0.45 cm H
2
0)
•
At least 1¼ seconds has passed since the last pulse began
