18
Continuous Flow Mode
The user may set the Eclipse oxygen flow rate and 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.
Pulse Flow Mode
The Eclipse Pulse Flow Mode delivers a high flow 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 volume delivery rates at settings between 1 and 6. Regardless of setting, the pulse
profile is a simple square-wave pulse based on a 16-ml/liter volume. (Refer to “Pulse Profiles” table
below). Pulse durations are no less than 100 milli-seconds. Pulse durations do not exceed 450 milli-
seconds due to dead space considerations.
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
Table 1: Pulse Profiles
The fundamental approach to triggering and controlling the oxygen bolus in Pulse Flow mode is as
follows:
The user may select a pulse trigger sensitivity in settings ranging from 1 to 6. 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
cmH20)
• At least 1¼ seconds has passed since the last pulse began
To Next Page
Loading...