CONFIDENTIAL and
PROPRIETARY
96-03996-00-01 revF
DCR-15-284
INOGEN ONE G3 OXYGEN CONCENTRATOR
TECHNICAL MANUAL
Page 6 of 17
4.
Plug into closest AC outlet
5.
Turn on the Inogen One G3 by pressing the on/off button.
6.
Set the Inogen One G3 to correct flow setting prescribed by
the physician or clinician by pressing the + (increase flow)
or – (decrease flow) button.
7.
Attach cannula to the metal hose barb located next to the
handle of the Inogen One G3.
For further information regarding the use of the Inogen One G3,
please consult the User Manual.
2.4.
Selecting the Proper Flow Setting
2.4.1.
Bolus Volumes Specification
All oxygen conserving devices (OCD’s) function differently,
and therefore it is prudent to titrate patients for any new
conserving device. Delivery timing, bolus volume, and oxygen
concentration all contribute to a patient’s fraction of
inspired oxygen (FiO
2
), and therefore to the OCD’s efficacy at
maintaining the patient’s blood oxygen saturation.
As an oxygen concentrator, the Inogen One G3 does not contain
a finite stored volume of oxygen, such as with compressed gas
or liquid cryogenic systems. The Inogen One G3 can provide
oxygen to the patient as long as a source of electricity is
available. However, because the oxygen is being produced as
it is used, supply of oxygen is
rate-limited
. The Inogen One
G3 delivers up to 1050 ml/min of 90% oxygen (earlier models
deliver up to 840 ml/min of 90% oxygen).
At each flow setting, the Inogen One generates a specific
amount of oxygen (210ml per setting), and the on-board OCD
attempts to deliver all of this product to the patient. This
is equivalent to a conserving ratio of 4.76 at all flow
settings and breathing rates. Slower breathing patients will
receive larger boluses, and faster breathing patients will
receive smaller boluses.
DESIGN
NOTE
This method of bolus volume determination is similar to
what is experienced by a patient using a continuous flow
concentrator – actual alveolar oxygen inspiration is more
closely linked to flow setting than to breathing rate.
In general, the Inogen One G3 delivers 14ml per bolus per flow
setting at 15 breaths per minute (210ml/min per flow setting).
The following table summarizes the bolus volumes delivered by
the Inogen One OCD at 20C and Sea Level: