Portable Oxygen Concentrator
Comparisons
TECHNOLOGY
8/11
All oxygen conserving technologies
are not created equal.
This book will help you understand the differences in conserving
technologies and point out the advantages of EasyPulse POC.
There are significant differences in how oxygen conserving systems
function and perform. What is most important is how well they saturate
the patient’s blood oxygen level without inhibiting ambulation. The
ability of a conserving technology to sense, react and deliver oxygen
within the first half of the patient’s inspiration is directly related to its
clinical benefit and efficiency.
2
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Theory & Operation
Section 1
TECHNOLOGY
Continuous Oxygen Administration
Flow
Useful O2
O2 Wasted
0
Pooling
Dead Space
O2 Flow
Patient Flow
Exhale
Inhale
Exhale
Typical Patient Breath
4
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Calculation of FIO2
2L/min = 33 mL/s (2000 mL/60s)
17 mL of 100% oxygen form the anatomic reservoir
(0.5 s end-expiratory pause x 33 mL’s)
17 mL of 100% oxygen during inspiration
(0.5 s Ti-Tdead x 33 mL’s)
316 mL of 21% oxygen (room air)
= 66 ml of 100% oxygen
17 + 17 + 66 = 100 mL 100% oxygen
FIO2 = 100 mL oxygen/350 mL V T useful = 28%
5
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Continuous Oxygen Administration
100% Oxygen
Flow Rate
1 L/min
2 L/min
3 L/min
4 L/min
5 L/min
6 L/min
FIO2 (0/0)
24
28
32
36
40
44
FIO2 = fraction of inspired oxygen.
6
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Terms & Definitions
Pulse Volume:
Peak Flow:
Nasal Pressure:
Trigger Delay Time:
Trigger Sensitivity:
Pulse Delivery Time:
Minute Volume:
7
This is the size of the pulse (bolus) of oxygen the
conserving technology delivers to the patient on
each breath.
The maximum (highest) flow achieved during the
delivery of oxygen.
The monitored pressure in the patient’s nasal cavity
while connected via a nasal cannula.
The response time (delay) of a conserving
technology from the onset of patient inhalation to
start the of the oxygen delivery.
The level of negative pressure (inspiratory effort)
required to activate a conserving technology to
deliver the oxygen.
The elapsed time from the start of oxygen flow to
the end of oxygen flow resulting in the delivery of
the pulse.
Total amount of oxygen delivered to the patient over
a minute’s time, calculated by multiplying breath rate
by the pulse volume.
8/11
Pulse Delivery with
Minute Volume Control
mLPulse
STP Volume
EasyPulse POC
19
mL STP
slpm
EasyPulse POC
Peak Flow
8.7
slpm
Patient Nasal Pressure
TECH
NOL
OGY
0.36 cm H2O
9
1.5
8
1.0
7
6
0.5
5
0.0
4
CM H2O
2.0
SLPM
10
-0.5
3
-1.0
2
-1.5
1
0
0.0
0.2
0.4
0.6
0.8
Setting 2 @ Breath Rate of 20 bpm
1.0
Time (seconds)
1.2
1.4
1.6
1.8
-2.00
2.0
Nasal Pressure
Pulse Volume/Flow
Patient Breath
EasyPulse 5
Delivers a high peak flow during the first 33% (or 1/3) of the Inspiratory Phase with minimal
trigger delay. The pulse (bolus) volume varies with patient breath rate. Over time the sum of the
boluses (controlled minute volume) will be consistent.
8
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Precision Medical’s
Controlled Minute Volume (
) Technology
Controlled Minute Volume (
) technology utilizes a pulse waveform algorithm, superior
trigger sensitivity and fast delivery time. All this is accomplished with a single lumen cannula.
technology is the most efficient, reliable and clinically sound available today.
Continuous flow oxygen therapy which in itself is a minute volume dose has been the “gold
standard” since oxygen was first prescribed for patient use.
is the only conserving
technology that mimics continuous flow oxygen therapy, pneumatically or electronically.
technology achieves this by delivering a consistent amount of oxygen per minute
regardless of patient breath rate.
delivers a true pulse of oxygen upon each breath within
the first 1/3 of inhalation. The volume of the pulse automatically adjusts to the patient’s breath
rate, maintaining minute volume.
The patented
technology is available only from Precision Medical, Inc.
The benefits for the provider and patient are:
Predictable use time
Excellent patient saturation
Reduced operation costs
Easy to use
Efficient oxygen delivery
Durable and reliable
Single lumen cannula
9
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Precision Medical’s
Conserving
Technology Performance Characteristics
Pulse Volume:
Delivered every breath; it’s volume is
dependent on breath rate and pulse setting.
(See product charts for specific volumes)
Peak Flow:
Between 6 and 11 lpm depending on breath
rate and pulse setting.
Trigger Delay Time:
Between 75 and 85 milliseconds depending
on breath rate and pulse setting.
Trigger Sensitivity:
Between -0.25 and -0.35 cm H2O negative
pressure depending on breath rate
and pulse setting.
Pulse Delivery Time: Between 0.15 and 0.35 seconds depending
breath rate and pulse setting.
Minute Volume:
10
Consistent between 15 and 35 breaths per
minute. (See product charts for specific volumes)
8/11
Performance & Comparison
Section 2
TECHNOLOGY
General Performance Specifications
12
Dimensions
Height
10.1” (25.7 cm)
Width
6.5” (16.5 cm)
Depth
4.4” (11.4 cm)
Weight
Device only
Power
Requirements
Battery Duration
100 - 240 VAC (1.0 A @ 120 VAC)
11 - 16 VDC (5.0 A @ 12 VDC)
Setting: 1
4.5 Hrs.
6.78 lbs. (3.08 kg)
2
3.2 Hrs.
in Carry Bag
7.29 lbs. (3.31 kg)
3
2.5 Hrs.
Extra Battery
1.23 lbs. (0.56 kg)
4
1.8 Hrs.
5
1.5 Hrs.
Operating
41° - 104° F (5° - 40° C)
Temperature Range
O2 Concentration
87% To 95%
Altitude
Sea Level to 9000 ft (2743 m)
Trigger Sensitivity
0.30 Seconds Typical
Sound Level
44 dBa (at Setting 2)
Trigger Delay
0.11 Seconds Typical
8/11
Pulse Volumes & Delivered Minute Volumes
15
20
25
30
Minute
Volume
1
16ml
12ml
10ml
8ml
240ml/min
2
25ml
19ml
15ml
13ml
380ml/min
3
35ml
26ml
21ml
17ml
520ml/min
4
44ml
33ml
26ml
22ml
660ml/min
Setting
5
13
Pulse Volume @ Breath Rate of:
52ml
39ml
31ml
26ml
780ml/min
Minute Volume Consistent @ 15 - 35 BPM
8/11
2 lpm Continuous Flow
vs
at
20 Breaths per Minute
2 lpm, 1st 1/2 of Insp. Volume
17
2 lpm Continuous Peak Flow
2
.36
Patient Nasal Pressure
10
mL STP
EasyPulse POC Pulse Volume
19
mL STP
slpm
EasyPulse POC Peak Flow
8.7
slpm
cm H2O
FiO2
95
%
1st ½ of Inspiration
9
2nd ½ of Inspiration
of
Exhalation
Patient’s Nasal
Pressure
7
6
1.0
0.5
0.0
5
4
EasyPulse POC
3
-0.5
2 LPM Continuous Flow
2
-1.0
Trigger Delay
1
0
0.0
0.2
0.4
0.6
-1.5
0.8
Setting 2 @ Breath Rate of 20 bpm
14
1.5
CM H 2O
SLPM
8
Start
2.0
1.0
Time (seconds)
1.2
1.4
Nasal Pressure
Patient Breath
1.6
1.8
-2.00
2.0
Pulse Volume/Flow
2 lpm Cont.
EasyPulse POC
8/11
2 lpm Continuous Flow
vs
at
30 Breaths per Minute
2 lpm, 1st 1/2 of Insp. Volume
11
2 lpm Continuous Peak Flow
2
.36
Patient Nasal Pressure
10
mL STP
EasyPulse POC Pulse Volume
13
mL STP
slpm
EasyPulse POC Peak Flow
8.1
slpm
cm H2O
FiO2
95
%
1st ½ of
9
8
2.0
Start of Exhalation
1.0
Patient’s Nasal
Pressure
7
6
0.5
0.0
5
4
EasyPulse POC
3
-0.5
2 LPM Continuous Flow
2
-1.0
Trigger Delay
1
0
0.0
0.2
0.4
0.6
-1.5
0.8
Setting 2 @ Breath Rate of 30 bpm
15
1.5
CM H 2O
SLPM
Inspiration
2nd ½ of
Inspiration
1.0
Time (seconds)
1.2
1.4
Nasal Pressure
Patient Breath
1.6
1.8
-2.00
2.0
Pulse Volume/Flow
2 lpm Cont.
EasyPulse POC
8/11
Inogen One G2
vs
Inogen One Pulse Volume
15
mL STP
EasyPulse POC Pulse Volume
19
mL STP
Inogen One Peak Flow
6.4
slpm
EasyPulse POC Peak Flow
8.7
slpm
Inogen One O2 Purity
96
%
EasyPulse POC O2 Purity
95
%
9
1.5
8
1.0
7
6
0.5
5
0.0
4
-0.5
3
-1.0
2
-1.5
1
0
0.0
0.2
0.4
0.6
0.8
Setting 2 @ Breath Rate of 20 bpm
16
CM H 2O
2.0
SLPM
10
1.0
Time (seconds)
1.2
1.4
Nasal Pressure
Patient Breath
1.6
1.8
-2.00
2.0
Pulse Volume/Flow
Inogen One
EasyPulse POC
8/11
Inogen One G2
vs
Inogen One Pulse Volume
10
mL STP
EasyPulse POC Pulse Volume
13
mL STP
Inogen One Peak Flow
6.5
slpm
EasyPulse POC Peak Flow
8.1
slpm
Inogen One O2 Purity
96
%
EasyPulse POC O2 Purity
95
%
9
1.5
8
1.0
7
6
0.5
5
0.0
4
-0.5
3
-1.0
2
-1.5
1
0
0.0
0.2
0.4
0.6
0.8
Setting 2 @ Breath Rate of 30 bpm
17
CM H 2O
2.0
SLPM
10
1.0
Time (seconds)
1.2
1.4
Nasal Pressure
Patient Breath
1.6
1.8
-2.00
2.0
Pulse Volume/Flow
Inogen One
EasyPulse POC
8/11
Invacare XPO2
vs
XPO2 Pulse Volume
18
mL STP
EasyPulse POC Pulse Volume
19
mL STP
XPO2 Peak Flow
9.0
slpm
EasyPulse POC Peak Flow
8.7
slpm
XPO2 O2 Purity
91
%
EasyPulse POC O2 Purity
95
%
9
1.5
8
1.0
7
6
0.5
5
0.0
4
-0.5
3
-1.0
2
-1.5
1
0
0.0
0.2
0.4
0.6
0.8
Setting 2 @ Breath Rate of 20 bpm
18
CM H 2O
2.0
SLPM
10
1.0
Time (seconds)
1.2
1.4
Nasal Pressure
Patient Breath
1.6
1.8
-2.00
2.0
Pulse Volume/Flow
XPO2
EasyPulse POC
8/11
Invacare XPO2
vs
XPO2 Pulse Volume
12
mL STP
EasyPulse POC Pulse Volume
13
mL STP
XPO2 Peak Flow
8.8
slpm
EasyPulse POC Peak Flow
8.1
slpm
XPO2 O2 Purity
91
%
EasyPulse POC O2 Purity
95
%
9
1.5
8
1.0
7
6
0.5
5
0.0
4
-0.5
3
-1.0
2
-1.5
1
0
0.0
0.2
0.4
0.6
0.8
Setting 2 @ Breath Rate of 30 bpm
19
CM H 2O
2.0
SLPM
10
1.0
Time (seconds)
1.2
1.4
Nasal Pressure
Patient Breath
1.6
1.8
-2.00
2.0
Pulse Volume/Flow
XPO2
EasyPulse POC
8/11
Life Choice
vs
Life Choice Pulse Volume
20
mL STP
EasyPulse POC Pulse Volume
19
mL STP
Life Choice Peak Flow
4.1
slpm
EasyPulse POC Peak Flow
8.7
slpm
Life Choice O2 Purity
82
%
EasyPulse POC O2 Purity
95
%
9
1.5
8
1.0
7
6
0.5
5
0.0
4
-0.5
3
-1.0
2
-1.5
1
0
0.0
0.2
0.4
0.6
0.8
Setting 2 @ Breath Rate of 20 bpm
20
CM H 2O
2.0
SLPM
10
1.0
Time (seconds)
1.2
1.4
Nasal Pressure
Patient Breath
1.6
1.8
-2.00
2.0
Pulse Volume/Flow
Life Choice
EasyPulse POC
8/11
Life Choice
vs
Life Choice Pulse Volume
20
mL STP
EasyPulse POC Pulse Volume
13
mL STP
Life Choice Peak Flow
3.8
slpm
EasyPulse POC Peak Flow
8.1
slpm
Life Choice O2 Purity
68
%
EasyPulse POC O2 Purity
95
%
9
1.5
8
1.0
7
6
0.5
5
0.0
4
-0.5
3
-1.0
2
-1.5
1
0
0.0
0.2
0.4
0.6
0.8
Setting 2 @ Breath Rate of 30 bpm
21
CM H 2O
2.0
SLPM
10
1.0
Time (seconds)
1.2
1.4
Nasal Pressure
Patient Breath
1.6
1.8
-2.00
2.0
Pulse Volume/Flow
Life Choice
EasyPulse POC
8/11
Phillips/Respironics EverGo
vs
EverGo Pulse Volume
16
mL STP
EasyPulse POC Pulse Volume
19
mL STP
EverGo Peak Flow
6.7
slpm
EasyPulse POC Peak Flow
8.7
slpm
EverGo O2 Purity
95
%
EasyPulse POC O2 Purity
95
%
9
1.5
8
1.0
7
6
0.5
5
0.0
4
-0.5
3
-1.0
2
-1.5
1
0
0.0
0.2
0.4
0.6
0.8
Setting 2 @ Breath Rate of 20 bpm
22
CM H 2O
2.0
SLPM
10
1.0
Time (seconds)
1.2
1.4
Nasal Pressure
Patient Breath
1.6
1.8
-2.00
2.0
Pulse Volume/Flow
EverGo
EasyPulse POC
8/11
Phillips/Respironics EverGo
vs
EverGo Pulse Volume
16
mL STP
EasyPulse POC Pulse Volume
13
mL STP
EverGo Peak Flow
7.3
slpm
EasyPulse POC Peak Flow
8.1
slpm
EverGo O2 Purity
94
%
EasyPulse POC O2 Purity
95
%
9
1.5
8
1.0
7
6
0.5
5
0.0
4
-0.5
3
-1.0
2
-1.5
1
0
0.0
0.2
0.4
0.6
0.8
Setting 2 @ Breath Rate of 30 bpm
23
CM H 2O
2.0
SLPM
10
1.0
Time (seconds)
1.2
1.4
Nasal Pressure
Patient Breath
1.6
1.8
-2.00
2.0
Pulse Volume/Flow
EverGo
EasyPulse POC
8/11
AirSep FreeStyle
vs
FreeStyle Pulse Volume
18
mL STP
EasyPulse POC Pulse Volume
19
mL STP
FreeStyle Peak Flow
4.7
slpm
EasyPulse POC Peak Flow
8.7
slpm
FreeStyle O2 Purity
95
%
EasyPulse POC O2 Purity
95
%
9
1.5
8
1.0
7
6
0.5
5
0.0
4
-0.5
3
-1.0
2
-1.5
1
0
0.0
0.2
0.4
0.6
0.8
Setting 2 @ Breath Rate of 20 bpm
24
CM H 2O
2.0
SLPM
10
1.0
Time (seconds)
1.2
1.4
Nasal Pressure
Patient Breath
1.6
1.8
-2.00
2.0
Pulse Volume/Flow
FreeStyle
EasyPulse POC
8/11
AirSep FreeStyle
vs
FreeStyle Pulse Volume
11
mL STP
EasyPulse POC Pulse Volume
13
mL STP
FreeStyle Peak Flow
4.4
slpm
EasyPulse POC Peak Flow
8.1
slpm
FreeStyle O2 Purity
95
%
EasyPulse POC O2 Purity
95
%
9
1.5
8
1.0
7
6
0.5
5
0.0
4
-0.5
3
-1.0
2
-1.5
1
0
0.0
0.2
0.4
0.6
0.8
Setting 2 @ Breath Rate of 30 bpm
25
CM H 2O
2.0
SLPM
10
1.0
Time (seconds)
1.2
1.4
Nasal Pressure
Patient Breath
1.6
1.8
-2.00
2.0
Pulse Volume/Flow
FreeStyle
EasyPulse POC
8/11
PHYSICAL
SIZE
COMPAIRSON
777
800
700
600
500
396
400
300
26
XPO2
0
FreeStyle
100
Life
Choice
249
182
200
323
EverGo
299
Inogen
One
G2
Cubic
Inches
8/11
WEIGHT
COMPAIRSON
10
9.10
9
7.10
7.30
Inogen
One
G2
6.78
7
XPO2
8
6
lbs.
3
2
1
0
27
FreeStyle
4
Life
Choice
4.45
EverGo
5.00
5
8/11
Performance Comparison
20
PBM
Model
FreeStyle
Life
Choice
EasyPulsePOC
XPO2
Inogen
One
G2
EverGo
Device
Manufacture
Date
June
2011
Oct.
2011
May
2011
June
2009
June
2011
June
2011
1
2
Se=ng
3
95%/9ml
90%/10ml
95%/13ml
91%/12ml
95%/7ml
94%/7ml
95%/18ml
82%/20ml
955/19ML
91%/18ml
96%/15ml
95%/16ml
95%/20ml
62%/30ml
94%/26ML
90%/30ml
96%/24ml
94%/24ml
4
5
n/a
n/a
94%/33ML
86%/30ml
95%/33ml
94%/33ml
n/a
n/a
94%/39ML
84%/35ml
93%/41ml
94%/37ml
Minute
volume
@
se=ng
5
400
@
95%
600
@
68%
780
@
94%
700
@
85%
820
@
93%
740
@
94%
30
PBM
Model
Free
Style
Life
Choice
EasyPulsePOC
XPO2
Inogen
One
G2
EverGo
Device
Manufacture
Date
June
2011
Oct.
2011
May
2011
June
2009
June
2011
June
2011
1
2
Se=ng
3
95%/6ml
87%/10ml^
95%/8ml
93%/9ml
95%/5ml
94%/7ml
95%/11ml
68%/20ml^
95%/13ml
91%/12ml
95%/10ml
94%/16ml
95%/13ml
52%/30ml^
94%/17ml
89%/16ml
95%/16ml
94%/23ml
4
5
n/a
n/a
94%/22ml
88%/20ml
95%/22ml
94%/23ml
n/a
n/a
94%/26ml
78%/22ml
94%/27ml*
94%/23ml
Minute
volume
@
se=ng
5
390
@
95%
900
@
52%^
780
@
94%
660
@
78%
810
@
94%
690
@
94%
^
@
27
BPM,
device
could
not
sustain
30
BPM
*
Device
did
not
trigger
on
every
breath
28
8/11