Inogen One G5 Technical Manual

CONFIDENTIAL
and PROPRIETARY
96-09302-00-01 revA DCR 19-030 21-Mar-2019 INOGEN ONE G5 TECHNICAL MANUAL
Page 5 of 18
For further information regarding the use of the Inogen One G5, 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 G5 does not contain a finite stored volume of
oxygen, such as with compressed gas or liquid cryogenic systems. The Inogen One G5
can provide oxygen to the patient as long as a source of electricity is available. Because
the oxygen is being produced as it is used, supply of oxygen is rate-limited. The Inogen
One G5 delivers up to 1260 ml/min of 90% (+6%/-3%) 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.
The following table summarizes the nominal bolus volumes (+/- 15%) delivered by the
Inogen One G5 at 20C and sea level:
Flow
Setting
Flow rate
(ml /min)
10 BPM
(ml/bolus)
17 BPM
(ml/bolus)
25 BPM
(ml/bolus)
30 BPM
(ml/bolus)
1
210
21
12
8
7
2
420
42
25
17
14
3
630
63
37
25
21
4
840
84
49
34
28
5
1050
105
62
42
35
6
1260
126
74
50
42
DESIGN
NOTE
Bolus Volume is tuned to provide the correct bolus volume when delivered
through a nasal cannula such as the Salter Labs 1600SOFT. If bolus volumes
are measured without a cannula or with a different type of nasal cannula, bolus
volumes will vary from values stated in the table above.

Inogen One G5 Specifications

General

Battery Life (single battery)	Up to 6.5 hours
Battery Life (double battery)	Up to 13 hours
Operating Temperature	41°F to 104°F (5°C to 40°C)
Storage Temperature	-4°F to 140°F (-20°C to 60°C)
Altitude Range	Up to 10, 000 feet (3, 048 meters)
Flow Settings	1-6
Weight (with single battery)	4.7 pounds (2.1 kg)
Power	AC: 100-240V, 50-60Hz
Humidity Range	0% to 95% non-condensing
Oxygen Flow	Pulse dose
Noise Level	38 dBA