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N-6000
User manual
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Nellcor N-6000 User manual

SERVICE
MANUAL
PULSE
Caution:
NELLCOR®
OXIMETER
to
sale
by
MODEL
law
or
on
the
ULTRA
AND
N-6000
(U.S.)
order
CAP™
CAPNOGRAPH,
restricts
of a physician.
this
device
©
1993
Nellcor
Incorporated
25495
Hayward,
Incorporated
Whitesell
California
510
887-5858
1-800-NELLCOR
.
Street
94545
U.S.A.
028065A-0193
Corporate
Headquarters
European
Office
Asia/Pacific
Headquarters
Whitesell
USA
Tel
510-887-5858
Incorporated
Street
California
94545
Tel.
European
Northwest Nellcor
Hambakenwetering 5231 The
Tel.
Middle Nelleor
Black-&-Decker-Strasse W-6270
|
Tel.
Southern Nellcor
3,
78353
France Tel.
BV
DD
’s-Hertogenbosch
Netherlands
+31.73.426565
Regional
Europe
Europe
DD
‘s-Hertogenbosch
Netherlands
+31.73.426565
and
GmbH
+49
6126.5930
Sarl
rue
du
Petit
Jouy-en-Josas
+33.1.39.46.96.58
BV
Europe
Robinson
1
1
Europe
.
28
Cedex
Suite
Admiralty
18
Hong Kong
Tel.
1204C
Harcourt
+852.529.0363
Road
Tower
1
European
University
Coventry
United
Tel.
Interleuvenlann B-3001 Belgium
Tel.
Local
(UK)
of
Park
CV4
7EZ
+44.203.690220
(Belgium)
Leuven
+32.16.400467
NV/SA
62/8
.
ii
TABLE
OF
CONTENTS
11 12 13
2.1
2.2
2.3
2.4
2.5
3.1
3.2
3.3
3.4
Introduction.........................
Warnings,
Description..................,..,............,...
1.8.1
13.2
13.3
13.4
1.3.5
1.3.6
1.3.7
18.8
1.3.9
1.3.10
1.3.11
13.12 Principles
Overview.........................
PulseOximetrySubsystem.......................
2.2.1
2.2.2
2.2.8
2.2.4 - Measured Capnography N20/02
24.1
2.4.2
2.4.3.
2.4.4
2.4.5
2.4.6
2.4.7
.
Introduction.................
CO2
3.2.1
3.2.2
3.2.3
8.2.4
3.2.5
3.2.6
3.2.7
8.2.8
3.2.9
3.2.10 Oximetry
©
8.8.1 Detailed
3.4.1
AAA
Cautions,
StatusMessages..............................
Automatic
On-Screen
N-6000 Trend Automatic
Noninvasive
C-LOCK
Automatic
Functional
Standard
Pressure
N20 O2
Water
BTPS/ATPS Summary:
Calibrated
Analysis
Module
Sensor CO2
Memory......:...,...............,,,,,......
of
Subsystem
Compensation
Collision Collision
Module
bDigital.....................
Motor
Signal
Heater
Source....
Barometer...
StatusLEDs....................
Status
OximetryModule........................
Oximetry
Control........
Module
Oximetry
and Notes
and
Indicator.......................
and
Operation
Broadening
Vapor
Operation.........
22220
Self-Test
Menus..................,...,,,.......
and
Calibration..…..............,........,.,.......ss
..................
Oximetry
ECG
Synchronization
Operation.
ECG
Calibration..................
versus
versus
Gas
Reported
Amplifier..
LED
Module
Calculated
............................
............
Conditions
Broadening...........
Broadening.........................,.,...........ss
Effect...
Compensation.
Sensor
Details.
Hardware
Summary............
Block
Module
...
Indicators.
and
Custom
Synchronization
Fractional
CO2
μμ
Sensors.........................
Saturation
Compensation...
Values...
ΕΟΟ
....
Analysis
Analysis
Time..
Set-Up
for
Pulse
Saturation...
...
…
.
.
Oximetry..
....
...
...
レレ
くく
レト
issues
ニュ
レッ
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と ャ
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..
.
..
..
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..
..
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.
.
1-1 1-1 1-2
1-2 12
1-2
1-3
13 13 13 13 13 1-4
2-1 21 2-1
2-3 2-5 25
2-5
2-6 2-6 2-6 2-6 2-6 2-7
3-1 3-2 3-2 3-2
3-2
3-3 3-8
3-8
3-3
3-3 BA 3-4
3-4 3-6 3-6
TABLE
OF
CONTENTS
(continued)
3.5
3.6
4.1
4.2
4.3
4.4
5.1
5.2
5.3
6.1
6.2
”Disassempbly
7.1
7.2
7.3
8.1
8.2
8.3
9.1
Main
8.5.1
8.5.2
3.5.3
3.5.4
8.5.5
8.5.6
3.5.7
8.5.8
8.5.9
3.5.10
3.5.11
3.5.12
3.5.13 Power
3.6.1
3.6.2
3.6.3
3.6.4 Routine
Introduction............
Cleaning Changing Replacing Packing
Överview...........................
Repacking
Repacking Disassembly
Introduction............
6.2.1
6.2.2
6.2.3
6.2.4
6.2.5
6.2.6
6.2.7
6.2.8
6.2.9
Description.....................
COs
7.2.1
7.2.2 Calibration
Troubleshooting........................
Introduction.......
Advisory
Status Spare In
Processor Microprocessor Power. Reset Battery Internal Graphical
BEPROM..............
FLASH Real
Time
Audio
Charging Patient Front
Supply-Charger Power AC
Rectifier
+5
Volt
C-LOCK
Maintenance
Instructions............
Mains
or
Changing
and
PCB
Control.........
and
Watehdog......................
Backup
and
Clock....
Generation
Indicator................
Isolation
Panel
Supply
and
Logic
QRS
Shipping......
Section.......,...............,....,......,
and
Memory
External
..................,....,,.....,..,.
....
Power
and
Sync
Controller..
PCB Charger +12
volt
Input
......................
Input
the
Details.
Retention............
Serial
Supply...
Communications..
Theory
Power
Circuit...
....
In
Original
In
New
Guide........
Procedure
RemovinginstrumentCover...........................
Removing
Removing
Removing Removing Removing Removing Removing Removing
and
Calibration
Carton..
Carton
Front Panel
Power
Transformer..........
了
Oximetry
Main
Pull-Out
Speaker............................
............
and
C02
Processor
Assembly
Card
Supply-Charger
ConventionS Service Breath
and
Screen
Detection
Accuracy
and
and
Check
Conventions...................
of
Messages.
Messages.....
Parts........
го
ас
sise
ーー
...
essences
Details.........
of
Charger...........
Supply
Subassembly..
PCB...........................
.............................,................,.....
Assembly.
0
End-Tidal
Operation..
....
…
<
scccrcre*
CO2
ui
iii
Values..
…
ees
enten
ennen
eker
0040000400000
000000e0
..
„
en
… .. .
. .. .. ..
72 7-6 8-1 8-1 8-6 8-7 9-1 9-1
iv
TABLE
OF
CONTENTS
(continued)
10
10.1 1
11.1
11.2 113 114 185
11.6.
11.7.
¡ACA
Overview.........
Specifications.............
Physical/Environmental.........
Components Controls
Connectors................
Performance.
Calibration.....
Airway
and
11.8 再 jectrical.
2
12.1
2-1 2-2 3-1 3-2 3-3 3-4 3-5 8-6
8-7 4-1 4-2
6-1 7-1
Schematic
Introduction...................,......,.................
Oxyhemoglobin Nondispersive Overall Oximetry LRD Input
Input
A:D
North
European Disassembly Failed
Block
Module
Driver
Signal
Amplifier,
Conversion
American
LED
essences
and
User
Interface..
Indicators...........
EP O KO KO R O R K
0
0000
Koh
OK S KO
RS O O
Diagrams..
see
LIST
OF
FIGURES
Dissociation
Infrared
Diagram..........................
Cireuit に し に
Processing.
Synchronous
Circuits.......................,.......,,,...........
Circuits...................
Fuse
Аттапветейв.............
Fuse
Diagram..............
Атгапретейф...............
Digits
Curve..........................................
CO2
Block
に に に レート
Analyzer..
Diagram...
ーーー・
Detector,
and
Filter/Amplifier
линии
нии
ини
тни
KOK
KK P KKK
низине
ss
KK O RR
oP P een
K R
0.0000
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PK O v
нение
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6
εως
Kone
..
.
7-1 8-1
The
United
OXISENSOR;;
The
4,770,179;
following
States
N-6000
Screen
are
trademarks
and
other
and
is
covered
4,802,486;
IndicatiomS
Guide
countries;
ULTRA
by
4,869,254; 4,928,692;
the
following
CAP,
of
Nellcor
which
レレ
ーー
patents:
トレ
ーー
トト
ーー
Incorporated:
which
is a
commercial
U.S.
4,934,372;
NELLCOR,
is
registered
Patent
and
スー
スト
ドー
くに
トー
which
in
the
trademark.
No.
4,621,643;
corresponding
トト
トト
トス
is
United
4,653,498;
スレ
(レレ に レレ に トス
registered
4,700,708;
in
other
countries,
レト
in
ストー
the
て
SYMBOLS
O/O
Sc
nx
el
On/Standby
Pulse
tone
volume
C-LOCK
Low
alarm
signal
off
lost
FRONT
PANEL
eke
MENU
A
+
ni
Freeze
Menu
C-LOCK
alarm
in
in
use
on
use
κ
220/240V~ FRONT
PANEL
A
Battery
INSTRUMENT
Attention: manual!
charging
ONLY
Refer
to
operator’s
Type
BF
equipment,
(patient
electrically
isolated)
vi
SYMBOLS
AS
=
MO
À
ECG
fuse
input
On/Off
BF
Type
(patient
equipment,
electrically
isolated)
BACK
PANEL
O
<>
RS232
Fuse
replacement
Eguipotential
RS232inputoutput
ground
port
VOLT
PANEL
INSTRUMENTS
Instrument proof.
ONLY
not
anesthetic
VAN
Attention:
Refer
manual!
to
operator’s
vii
WARNINGS
The
N-6000 contains
.
[For
The from
connection,
must
be
protection
N-6000
is a patient-connected
potentially
the
no
performed
fire
dangerous
procedures
user-serviceable
by
qualified
personnel.
electrical
and
potentials
part
specifications
parts.
fuses
For
protection
only
Isolated
or
ground
contained
with
the
same
paths.
in
this
electrical
type
and
connectors
To
manual
the
integrity
must
the
be
adhered
all
of
this
to.
viii
1.1
INTRODUCTION
This
manual
and
capnograph,
personnel,
Note: service
language
screen,
and
then
who
This
screens.
option
press
press “LANGUAGE” from
the
left.
or
“ENGLISCH.”
ㆍ
The
N-6000
time
monitoring
carbon
.
SpO2 SpO2 numerically, shows
contains
information
model
have a technical
manual
the
If
to
Freeze
the
the
is
unit
English.
second
Press
this
is a compact,
of
is
noninvasively
(ETCO2),
which
while
the
patient’s
for
is
configured
To
reach
button
key
and
in
to
on
fourth
French
gain
oxygen
and
and
are
available
the
plethysmograph
relative
SECTION
I
Introduction
for
servicing
of
this
background
an
N-6000
for
the
language
the
front
soft
keys
and
access
microprocessor-controlled
saturation
respiratory
continuously
for a variety
pulse
strength
the
in
analog
configured
French
panel
from
to
the
language
rate
measured
is
displayed as
NELLCOR®
must
and
for
or
selection
while
the
the
left
in
pulse
(RR).
of
measured
ULTRA
be
done
by
electronics.
CAP™
qualified
English-language
the
technician
menu
main
at
selection
instrument
rate
using
from
monitoring
the
same
(PR),
Nellcor's
sites.
the
time.
above
menu
and
used
for
inspired
reusable
SpO2
values
main
screen
The
CO2
as a waveform, A bar
by
the
pulse
oximetry
pulse
displays
must
and
change
monitoring
is
displayed,
legend
the
fourth
select
“ANGLAIS”
continuous
or
adhesive
are
displayed
graph
circuits.
oximeter
the
soft
key
real-
end-tidal
indicator
ㆍ
ETCOs intubated exhalation
This
manual digital N-6000
maintenance
12
Before These proper
WARNING:
Caution: always
operator’s
WARNINGS,
you
terms
operation
technician.
Cautions
in
boldface
Note: A note
is
determined
patient’s
is
is
intended
monitoring
or
repair.
read
the
identify
A
gives
by
positioning
airway
displayed
for
(15
mm
numerically,
use
by
equipment.
manual
CAUTIONS,
N-6000
of
this
and
be
AND
information
instrument.
familiar
that
describes a condition
WARNINGS
are
describes a condition
type.
information
that
an
diameter).
while
authorized
with
NOTES
it
pertains
that
always
warrants
that
in
may
infrared
The
CO2
is
personnel
instrument
is
important
to
technician
may
result
boldface
result
attention.
mainstream amount
of
displayed
personnel,
must
have
operation
to
understand
and
in
injury
type
and boxed.
in
damage
CO2
sensor
CO2
as a waveform.
read
to
in
ahd
before
the
to the
the
instrument.
servicing
understood
attempting
following
patient,
across
at
the
and
an
end
of
analog
the
terms.
indicates
operator
Cautions
and
or
are
1-1
1.3
DESCRIPTION
The
following
1.3.1
The
N-6000
.
C02
*
provides a qualitative
9
Trends
paragraphs
and
features
and
plethysmographic
are displayed: respiratory
ㆍ
When
the
switch, a battery
1.3.2
Indicator
describe
Indicators
numeric
displays
indication
acquired
SpO2
rate
for
trend
alone;
all
SpOz,
operator connects
charging
the
N-6000
of
SpO2,
waveform
of
pulse
parameters,
CO2
trend
CO2,
pulse
the
indicator
and
list
PR,
RR,
displays:
strength
and
the
alone;
rate,
to
AC
SpO2
and
power
important
and
ETCO2:
and a pulse
at
the
oximetry
following
and
CO2
respiratory
and turns
features.
amplitude
five
trend
rate
on
the
bar
pulse
rear-panel
graph,
can
rate
and
which
be
on/off
Pulse pitch decreases. can
1.3.3
The moves apnea, priority the button
ALARM
function
Note:
Note:
rate
of
this
watch
or
of
alarm
alerts
SILENCE
disabled.
are
always
The
When
1.3.4
A
Status
status
alarm
identified
and
tone
This. early
the
and
has
when a sensor
the
alarm
temporarily. A flashing
the
operational.
SpO2
the
Messages
by a module
troubleshooting
oxygen
and
both
an
adjustable
state.
operator
indicator
and
ETCO2
French
function
is
displayed
the
problem.
saturation
with
listen
are
indicated variation system
for
encourages
SpO2
in
Alarms
and
limit
gets
disconnected.
Pressing
that
the
warns
alarms
language
the
ALARM
alarm
that
appear
is
chosen
The
ALARM
tone
one
on
indicators
and
disabled, a single tone
in
case
an
error
identifier
and
(See
an
error
VIII
SpO2,
tone
has
or
more
the
change
one
occurs
condition
code
for
with a tone
rising
prompt
as
saturation
corrective
simultaneously.
These
when
and
alarms
the
button
indicator
been
silenced
parameters
temporarily. A steady
from
green
or
more
of
the
every
three
number
more
that
information.)
that
increases
action
are
activated
of
the
turns
adjacent
have
had
and
unlike
to
red
parameters
minutes.
An
error
since
off
the
to
the
their
when
condition
each
and
the
pulse. falling
The
as
clinician
when a variable
loss
of
pulse
or
alarm
ALARM
audible
depend
ON
of
alarm
on
the
an
alarm
have
had
personnel
the
will
error
be
in
it
the
of
they
1.3.5
Automatic
The
test
takes
that
the allowing 45
seconds.
approximately
the
Self-Test
automatically
mainstream
If
an
error
“Troubleshooting,”
1.8.6
On-Screen
The
on-screen
at
the
bottom
function
MENU
1.8.7
The Once
1.3.8
The
button
N-6000
N-6000
configured,
Trend
N-6000 memory the
memory
memory
continues
key
can
can
while
Menus
menu
of
the
is
pressed,
to
power-on
Memory
stores
be
viewed
is
full,
be
viewed
the
is
for
more
guides
screen
and
the
custom
up
to
in
the
oldest
on
trend
and
performs a series
15
data
COz
after
sensor
to
detected, a status
information.)
the
operator
just
above
the
the
screen
the
top level
Custom
24
hours
30-minute,
the
data
displays a new
settings
alarm
data
of
trend
are
limits
sereen
are
being
menu,
can
2-hour, 4-hour,
automatically
and
Time
of
the
operator
and
internal
warm.
The
—
four
function keys
or
to
Set-Up
be
customized
will
always
data
for
can
be
printed.
diagnostic
turns
circuitry
CO2
sensor
appears.
all
system
menu
return
with
to
according
be
CO2,
SpO2,
erased
with a printer.
tests
when
on
the
are
(Refer
functions.
that
are
additional
the
main
in
place,
pulse
12-hour,
as
new
turned
monitor.
These
functioning
time
to
Menu
used
to
select
functions.
monitoring
to
institutional
even
after
rate,
and
or
data
are
on.
The
system
tests
properly,
is
approximately
8,
items
an
are item.
Press
requirements,
power-down.
respiratory
segments.
Data
monitoring
self-
while
displayed
When
the
rate.
Trend
When
stored
a
in
1.3.9
Automatic
The
SpO2
subsystem
the
system
is
turned
whenever a new
calibrated.
1.3.10
If
external
90
ㆍ
by
By
choosing
power
on
using
(including w/BATTERY displays
.
When AC
the
the
life.
the
MAINS
MENU
operator
Calibration
of
on
oximetry
Operation
is
lost
its
rechargeable
the
GRAPHICS
GRAPHICS
all
waveforms,
OFF,
only
the
numerical
GRAPHICS
power,
button
reapplies
the
N-6000
and
periodically
sensor
or
transportable
is
internal
w/BATTERY
messages,
the
values
w/BATTERY
the
to
turn
the
AC power
is
fully
thereafter.
connected.
operation
battery.
w/BATTERY
of
option
will
only
to
the
self-calibrating.
It
Additionally,
The
capnography
is
necessary,
This
operating
power
ON
etc.)
will
blank
SpO2
is
blank
w/BATTERY
in
the
continue
during
and
ETCO2,
selected
when
saver
SYSTEM
to
the
option
is
calibrated
it
subsystem
the
N-6000
time
menu,
to
operate.
This
allows
be
OFF
unit
transfers
ON.
automatically
is
recalibrated
of
can
can
be
extended
the
By
choosing
operation.
up
to
and
the
to
The
automatically
the
N-6000
up
graphics
The
N-6000
180
unit
is
whenever
is
up
to
to
180
GRAPHICS
of
operating
power.
Press
when
on
1.3.11
Noninvasive
Oximetry
Noninvasive two
light-emitting
differences
infants,
1.3.12
children,
If a patient quality separate signal
for
from
synchronize
When
If SIGNAL N-6000
the
C-LOCK
ECG
LOST
is
not
diodes
in
tissue
is
moving
thickness
and
ECG
Synchronization
or
measurements
that
the
ECG.
The
the
SpOz
measurements.
ECG
synchronization
signal
is
lost
symbol
being
used.
oximetry
(LEDs)
or
Refer
has
poor
of
oxygen
N-6000
or
deteriorates
on
as
light
sources.
skin
pigmentation.
to
specific
for
perfusion,
saturation.
activity:
uses
the
ECG
is
used,
to
the
the
display.
obtain
sensor
Pulse
C-LOCK
When
an
QRS
the
point
No
measurements The
N-6000
Specific
directions
Oximetry
ECG
this
signal
C-LOCK
that symbol
it
IN
can
is
:
by
sensors
automatically
are
for
use
for
synchronization
is
used,
the
from
the
sensor
to
help
identify
USE
symbol
no
longer
displayed
be
if
used,
the
means
available
complete
can
N-6000
and
the
pulse
the
C-LOCK
C-LOCK
alone,
using
for
for
neonates,
information.
signal
receives
an
electrical
and
on
the
display.
of
two
the
2.1
OVERVIEW
This
2.2
PULSE
The
N-6000 plethysmography. sensor photodetector.
920
nm).
The
photodetector
absorption.
With
each hemoglobin The
N-6000
hemoglobin
In
principle, a pulse Absorption both
wavelengths
describes,
OXIMETRY
oximetry
has two
When
low-voltage
One
the light
heartbeat, a pulse
measures
that
is
also
in
subsystem
It
includes
LED
measures
from
red
is
saturated
oximeter
measured
SUBSYSTEM
light-emitting
emits
from
deoxygenated
and
in a value
terms,
is
based
an
‘electro-optical
red
light
the
LEDs
the
light
of
oxygenated
infrared
with
measures
when
pulsatile
SECTION
Principles
operating
on
the
diodes
(nominal
passes
that
hemoglobin absorption
for
the
passes
arterial.blood
the
light
arterial
arterial
II
of
Operation
principles
principles
sensor
(LEDs)
through,
absorption
and a microprocessor-based
as
660
nm)
the
flows
in
its
to
determine
blood
oxygen
for
the
of
spectrophotometry
light
sources,
and
the
other
sensor
which
relative
is
saturation
to
by
in
the
the
site,
part
indicates
the
sensor
red
and
percentage
and
and
and
one
photodiode
emits
infrared
of
the
light
red
and
infrared
site.
Oxygenated
infrared
of
functional
nonpulsatile
The
ratio
module. The
as
(nominal
is
absorbed.
absorption.
blood.
of
absorption
a
at
2.2.1
C-LOCK
When
an complex
with
length
relationship random
If
an optical C-LOCK
C-LOCK
provided
is
the
patient’s
of
the
ECG
pulse
ECG
signal
detected,
signal
ECG
Synchronization
ECG
the
pulse
and
movement
with
an
from
the
an
physiology
delay
is
relatively
is
used
to
identify
is
not
provided,
alone
is
used
synchronization
synchronization,
synchronizing
and
when
the
ECG
sensor
and
to
determine
pulse
the
and
an
is
with
the
“good”
or
if
that
detected
pulses
the
N-6000
SpO2
measurements.
patient’s
N-6000
electrical
at
location
and
signal
the
pulse
when
an
uses
an
perfusion
receives
signal
the
of
the
C-LOCK
reject
deteriorates
rate
adequate
is
two from
sensor
ECG
nonsynchronized
and
to
ECG
signal
This
poor.
the
site.
The
However,
synchronization,
so
that
initiate
ECG
signal
as a reference
enhances
that
ECG. A short
length
it
can
saturation
is
signal
for a given
artifacts
no
time
of
this
that
such
longer
measurements.
available.
point
activity:
after a QRS
delay
varies patient, time
as
be
used,
for
the
-
the
2-1
2.2.2
Automatic
The
oximetry calibrated connected. differences
Each
sensor
determined
calibration
obtained
2.2.3
by
Functional
Calibration
subsystem
each time
Also,
the
in
tissue
is
calibrated
and
resistor
that
versus
incorporates
it
is
turned
intensity
of
thickness
when
into a calibration
to
determine
Fractional
automatic
on,
at
periodic
the
and
pigmentation.
manufactured:
resistor.
the
appropriate
Saturation
calibration
intervals
LEDs
is
the
effective
calibration
thereafter,
adjusted
The
instrument’s
mechanisms.
and
automatically
mean
wavelength
coefficients
It
is
automatically
whenever a new
to
compensate
of
the
software
for
reads
the
measurements
red
this
sensor
for
LED
is
is
functional
the
N-6000
of
instruments
as a percentage
uses
two
SaO2.
carboxyhemoglobin
In
contrast, Oximeter measured Measured
Consequently, other
measurements
some
report
hemoglobin,
dysfunctional
to
instrument
can
functional
2.2.4
Measured
When oxygen
saturation
relationship
carbon
the
versus
the
calculated
(PaCO2),
measures
that
of wavelengths, It
does
not
or
methemoglobin.
laboratory
fractional
SaQ2-—~oxygenated
hemoglobins
directly
must
be
converted
saturation
Calculated
is
calculated
calculated
saturation
PO2 the
functional
the
hemoglobin
it
measures
detect
instruments
or
not
N-6000
functional
using
=
100 — (%carboxyhemoglobin + %methemogiobin
SaO2,
fractional
SaO2.
that
oxygenated
significant
such
that
hemoglobin
are
included.
measurements
SaO2.
the
following
it
may
Functional
is
and
as
the
of
Instrumentation
hemoglobin
is
If
it
measures
equation:
fractional
measurements
SaQ2
of
transporting
deoxygenated.
dysfunctional
expressed
available
with
those
fractional
saturation
Saturation
from a blood
value
may
may
and
saturation
concentrations
not
gas
measurement
differ
from
have
been corrected
of
the
N-6000
2-1):
temperature,
and
of
the
SpO2
for
fetal
is
oxygenated
hemoglobin,
hemoglobin,
Laboratory
as a percentage
for
oxygen
of
Sa02,
~
pressure
measurement.
the
pH,
of
the
hemoglobin.
that
differ
hemoglobin
yielding
such
282
CO-
of
all
transport.
instrument,
those
x
of
arterial
This
variables
that
pressure
from
the
as
that
is
shift
of
2-2
100
—
pH
t
Temperature
+
PCO2
+
+
2,3-DPG
= ο
я
504
5
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est
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PCO2
2,3-DPG
50
PO:
(mmHg)
=.
100
2.3
CAPNOGRAPHY
The
N-6000
present
sensor ventilator elbow into
Infrared
infrared
specific the versus
have
at
the
that
and
the
spectroscopy
light.
wavelengths
infrared
the
proportional
determined
The
CO2
detection
“optical
bench”),
wavelengths
During reaches
selectively second.
monitoring,
the
absorbed
Three
uses
nondispersive
end
of
exhalation
attaches
to a disposable
either
with
Of
the
respired
the
wye.
can
normally
of
spectrum
wavelength
to
by
that
the
concentration
comparing
mechanism
has
an
corresponding
light
narrow-band
by
measurements
Figure
2-1:
SUBSYSTEM
infrared
(ETCO2).
infrared
of a molecule
of
have
infrared
first
infrared
0602.
the
The
CO2
gases.
be
used
respired
is
overlapping
the
absorbance
used
to
an
passes
It
then
are
to
light
of
source
absorption
Oxyhemoglobin
spectroscopy
It
features a small
airway
adapter. endotracheal mainstream
measure
gases,
(i.e.,
have
(usually
unique
to.
absorption
the
absorbing
to
that
in
the
N-6000
that
peak
which
encounters
obtained
during
Dissociation
to
The
tube
sensor
the
concentration
only
CO2,
an
infrared displayed that
molecule.
molecule,
of a known
(commonly
is
optically
of
the
the
respiratory
was
selected
the
each
quantitatively
lightweight
airway
and
fits
as a graph
peaks.
filtered
CO2
rotation:
the
ventilator
on
top
N20,
and
spectrum).
However,
an
standard.
referred
spectrum
gas
wheel,
of
of
any
of
to
in
Curve
the
“mainstream”
is
inserted
the
molecule
water vapor
This
light
different the
to
as
provide a narrow
(see
the
airway
it
passes
which
or
and
that
selectively
absorption
absorbed
molecules
absorption
concentration
the
CO2
Figure
adapter.
wavelengths
many
amount
of
CO2
into
the
by a molecule
sensor
2-2).
does
not
absorbs
pattern,
may
of
light
can
band
Next
times
the
absorb
be
or
of
that
CO2
come
is
it
are
each
ο
wheel
A
sample
and
measurement
then
the
is
made when
detector
(i.e.,
light
the
light
passes
passes
the
the
open
respiratory
area
gas).
of
the
.
A
reference+sample containing a known respiratory
ㆍ
A
The
ratio,
determine
from
the
The
N-6000 assumed N-6000. expressed are
is
being
to
fully
The
N-6000 dynamically several ETCO?
The
value obtainable simply value ETCO2.
patient.
gas
and
dark
measurement
the
detector).
“reference+sample/sample”, the
CO2
analysis
measures
conditions
When
displayed
saturated
spontaneous
value,
of
ETCO2
This
units
as % dry
to
be
from
the
of
ETCO2
from
the
all
seen
measurement
CO2
concentration
gas
in
the
is
concentration
of
the
CO2
the
of
33° C and
of % (by
gas.
By
convention,
measured
on
the
conditions
and
N-6000
that best
within
in a stable
from a patient
front
counts
with
accurately
during
together
the
is
obtained
and
reference
made when
in
waveform
airway
fully
panel
(BTPS ) before
and
low
estimates
last 8 seconds ETCO2
cell).
light
is
then
respiratory
(capnograph).
pressure
saturated.
are
displayed
all
readings
and
LED
in
when
ETCO2
the
forced
to-display
exhalations.
value
when
then
strikes a solid
used
in
gas.
Respiratory
of
CO2
Barometric
on
of
corrected
units
of
being
displayed.
the
COz2
level
CO2
values
and
true
the
and
that
followed
counts
alveolar
ETCO2
displays
best
light
passes
the
detector
area
the
sensor-specific
rate
in
the
pressure
the
front
panel
CO2
posted
to
body
mmHg
crosses a threshold,
Hence,
all
breaths.
CO2
Unlike
value,
that
approximates
on
temperature
or
kPa,
when a ventilated
by a mechanical
value
conventional
the
through a reference
(i.e.,
light
passes
of
the
is
determined
airway
is
measured
LEDs,
the
the
values
is
the
N-6000
the
arterial
wheel
front-panel
(1.9.,
calibration
the
measured
(37°
C).
are
which
breath
capnometers
looks
for
value
for
PaCO
gas
no
light
equation
by
the
N-6000
at
normal
directly
also
is
value
the
the
by value
LED
When
with a higher
PCO2
converted
set
has
that
true
value
in
cell
to
the
is
the
2-4
Light
source
Figure
2-2:
!
Airway
adapter
Nondispersive
Infrared
filter
Chopper
wheel
Infrared
Reference gas
cell
Open
area
Photodetector
CO2
Analyzer
24
N20/O2
COMPENSATION
Unless
affect
To
oxide
screen
The
oxide in 20%
for
The provides there
The provides there
Finally,
barometric
changes.
compensated
the
ensure
with
menu
N-6000
and
O2
beyond
of
increase
every
first
is
zero
second
is
zero
barometric
the
the
for,
measurement
accurate
oxygen; and
measurements,
selections.
is
calibrated
20%
the
reference
in
O2.
20%
increase
compensation
necessary
error
under
compensation
correction
error
under
pressure
pressure
elevated
of
the
concentration
(2)
high
for
low O2
This
is
the
state
An
increase
in
N20.
level
correction
these
level
factor
for
these
no
levels
the
N-6000
compensation,
decreases
in
N20
50%
factor
high
levels
also
user
intervention;
of
oxygen
of
Compensation
mode
the
increases
for
high
conditions,
0%
conditions.
affect
(O2)
CO2
by a collision
provides
which
where
displayed
oxide
levels
of
O2.
Once
measured
the
and
two
levels
levels
COMP. = OFF.
the
of
oxide
N-6000
are
CO2
value
displayed
and
50%
N20.
and
60%
again,
CO2
automatically
oxide
(N20)
broadening
of
compensation:
user
selectable
the
reference
In
the
by
1.5%
of
CO2
value
When
oxygen. Selecting
when
Selecting
this
correction
this
correction
However,
in
the
via
state
1.6%
airway
(1)
of
0%
an
increase
for
every
of
COMP. = N20
is
applied,
COMP. = O2
is
applied,
in
for
these
The
following
conditions,
2.4.1
Standard
The
accuracy
CO2
in
38
mmHg),
errors
2.4.2
CO2 additional
from
mmHg
are
Pressure
barometric
exchanged
values
the
standard
for
paragraphs
as
pertains
Gas
specifications
air
and a barometric
required
Broadening
pressure
reported
residual
every
to
Conditions
(21%
O2),
for
barometric
pressure
in
molecular
is
automatically
on
both
errors
reference
5000-foot
N-6000
for
Compensation
may
change
operation.
the
N-6000
at
airway
pressure
pressure
collisions
the
main
be
observed
state
of
in
in-depth
refer
conditions
of
760
(altitude),
measured
alters
measured
monitoring
when
760
mmHg
altitude.
discussion
to
the
following
of
33
°C,
fully
mmHg.
CO2
the
Additional
N20,
02,
by a “pressure
absorption
and a compensation
screen
(sea
spectrum
and
the
reference
These
of
compensation
standard
saturated
corrections
and
broadening”
service screen.
gases
amount
conditions:
(water
water
vapor.
of
is
automatically
at
to
and
standard
test
vapor
and/or
CO2.
pressures
approximately
residual
In
the
However,
gas
is
pressure
in
which
to
different
+0.5
of
2-5
2.4.3
N20
Collision
Broadening
absorption eliminate causes standard correct
both mixture
2.4.4
Oxygen exchanged causes a decrease
Oxide
an
(N2O)
broadening”
spectrum
any
direct
increase
in
can
affect
effect
in
of
CO2.
The
absorption
measured
conditions. A software-selected
for
high
N20,
assuming a gas
the
N-6000
if
O2
Collision
(02)
the
02
can
in
molecular
main
monitoring
compensation
Broadening
affect
the
CO2
collisions
in
measured
conditions. A software-selected
high
O2,
assuming a gas
main
monitoring
compensation
2.4.5
Water
Water
vapor respiratory water
N-6000
are to
vapor
is
calibrated
automatically
verify
calibration,
sereen
option
Vapor
also
has
gas
is
(with a vapor
composition
and
the
is
selected.
Effect
an
effect
at
standard
pressure
to
include
compensated,
CO2
values
airway
the
CO2
measurement
which
of
CO2
energy
infrared
infrared
of
approximately
exchanged
narrow
energy
(user-selectable)
composition
screen
option
measurement
alters
CO2
and
on
is
selected.
the
absorption
of
approximately
by a “collision
(user-selectable)
of
60%
O2
(0%
on
CO2
sereen
measurements.
conditions
of
38
mmHg)
this
effect,
while those
reported
and
on
CO2
on
the
by
bandpass
by
of
50%
the
-0.75%
02
compensation
N20).
are
compensated
of
33°C,
causes
values
the
both
in
filter N20. +0.8%
N20
N20
screen
spectrum
CO2
In
normal fully
an
increase
reported
screen
screen
direct
absorption
molecular
used
in
However,
per
10%
increase
compensation
and
50%
are
compensated
broadening”
of
CO2.
per
10%
increase
option
values
for
use,
this
reported
it is
saturated.
in
on
the
are
not.
should
be
of
collisions
the
N-6000
N20
collision
in
option
O2.
CO2
values
effect O2
collision
in
is
provided
on
gas
Under
measured
main
If
applying a dry
used
for
infrared
alters
is
chosen
the
broadening
N20
from
is
provided
reported
for
this
in
which
broadening
O2
from
to
both
the
if
the
that
these
conditions,
CO2
of
6%.
monitoring
comparison.
and
by
to
on
gas
energy
standard
for
N-6000
O2
The
screen
test
gas
a
to
2.4.6
BTPS/ATPS
The
N-6000 temperature adapter barometric
conversion
fully
is
measured
pressure.
to
saturated
screen values
2.4.7
Summary:
CO2 water a
dry
also
CO2
water
values
test
values
reported
vapor
gas
reported
vapor,
Compensation
and
deep
that
measured
pressure
fully
at
33
°C,
By
convention,
lung conditions
with a water vapor
do
not
have
these
Reported
correction).
is
to
the
and,
if
CO2
on
the That
in
the screen
on
the
selected,
saturated
fully
saturated
of
pressure
corrections
Values
is,
CO2
airway
main
monitoring
N20
and
respiratory
with a water
CO2
values
body
temperature
of
47
applied.
on
the
Main
screen
are values adapter
reported
(at
screen
O2.
gases
are
That
is,
vapor
are
reported
and
mmHg,
at
Monitoring
uncorrected
on
the
25
°C).
Corrections
have
at
standard
it
is
pressure
on
the
pressure
and
for
BTPS/ATPS
all
corrections
airway
that
of
38
main
monitoring
fully
saturated
barometric
screen for
are
N20
applied:
conditions
the
gas
in
mmHg,
at
pressure.
conditions
accurate
and
Oz,
if
BTPS/ATPS,
of
airway
the
airway
screen
after
37
(including
assuming
selected,
°C,
are
2.5
Each
CO2
sensor
temperatures.
components calibrated automatically
and
over
CALIBRATED
is
individually
The
N-6000
electronics
multiple
compensated
temperatures,
SENSOR
factory-calibrated
sensor
is
at a known
by
temperature
over
temperature-regulated
constant
so
that
temperature.
any
deviation
calibration
coefficients
multiple
to
42
°C,
Additionally,
from
gas
concentrations
which
the
42
°C
stored
keeps
the
the
sensor
set-point
with each
and
sensor
is
is
sensor
multiple
factory-
unit.
3.1
INTRODUCTION
This
provides
of
SECTION
Circuit
operation.
Analysis
Refer
HI
to
Figure
3-1,
the
bleck
diagram.
i
Oximetry
Sensor
Heater/Motor/IR
CO,
Sensor
LED
Drive
Output
Sensor
Output
Drive
Source | Module
Sensor Analog
Oximetr
>
>
Mo.
tule.
CO»
Optical
Isolators
»
Serial
Data
isolated
DC
T
i
・
Serial
| 1
|
Power
1 1
I
.
Data
>
Charger
Power
Transformer
Main
Processor
Battery
and
Supply Å
AC
Isolated
Audio
isolated
Power
Signals
Keyboard
y
—|
Battery
>
>
speaker
|
Serial
Loud-
Port
3.2
CO2
MODULE
The
CO2
module information modes
The
thermistor,
and
mainstream
acquires
to
the
send
sensor
sensor
and
non-volatile
Figure
CIRCUIT
main
DETAILS
CO2
data
processor,
information/status.
has
six
basic
memory.
3-1:
from
the
The
module
components:
AC
Block
mainstream
an
IR
Mains
Power
CO2
sensor
commands
and
from
the
detector,
communicates
processor
motor,
the
to
change
3.2.1
Sensor
Operation
The
IR
source
based
on
components: a filter,
The
filter frequency, other
molecules
The
airway tube
and
within
The path The energy
The can third
The
the
as
second
to
detector
be
determined
(dark)
CO2
condensation
because
the
allows
the
gas
the
sensor's
wheel
the
wheel phase
pass
phase
sensor
the
sensor’s
amount
emits
energy
of
the
only
attenuation
normally
sample
ventilator
light
is
rotates.
is
an
to
the
detector.
output
is
by
provides a zero
temperature
from
output
that
is
energy
energy
it
receives.
airway
gas
of a wavelength
is a disposable
circuit.
The
path.
split
into
three
The
first
comparing
during
is
elevated
on
the
is
affected
providing
the
directed
due
to
the
in
respired
airway
sensor
sections
phase
each
change
reference
to
airway
by
toward
In
the
the
light
path
and a chopper
within
presence
the
of
gas.
clips
or
to
phases
the
that
airway
has a reference
no
attenuation.
phase.
in
42°
windows,
temperature.
The
detector
for
recalibrating
C.
There
and
detector.
The
between
the
wheel.
CO2
absorption
CO2
molecules
is
inserted
adapter,
that
are
presented
cell
filled
The
third
amount output
are
of
CO2
from
the
detector.
two
to
maintain a stable
detector
are
generates a voltage
source
band
and
to
much
the
sequentially
with a known
phase
phase
is
one
for
doing
dark,
in
to
detector
detector
pass.
At
the
endotracheal
respired
to
amount
allowing
the
gas
phase
this:
two.
to
temperature
are
this
than
for
gas
the
light
of
CO2.
no
sample
The
keep
three
The
sensor maximum sensor
requires
As
the
3.2.2
The
CO2
and
barometric
3.2.3
The
module
stored with EEPROM
waveform. its
internal
power-up
available
some
motor
CO2
Module
module
Digital
in
U600.
the
main
U608,
EEPROM
A/D
determination
sequence
heater
temperature,
current;
speed,
Hardware
has
six
pressure
is
controlled
The
microprocessor
processor.
and
the
U603
converter
in
other
is
optimized
output
by
disabling
main
the
heater
the
heater
sections:
can
the
be
is
heater,
is
digital,
transducer/amplifier.
by
U602,
an
80C552
uses
The
microprocessor
sensor
sections
stores
to
determine
of
calibration
sensor
the
hardware.
to
keep
power
varied
in
software
temporarily
the
demands
re-enabled,
motor
microprocessor,
its
on-board
communicates
The
external
constants
temperature,
©
supply
to
disabled,
followed
control,
serial
port
A/D
for
the
match
on
by
the
and
the
the
power
activation
signal
amplifier,
te
communicate
serially
to
converter
barometric
to a minimum.
power
motor
is
supply
of
the
available.
started.
IR
at
11
MHz.
A/D
converter
is
used
to
digitize
The
microprocessor
pressure, and
The
As
the
This
are
minimized.
source
The
asynchronously
U605,
the
sensor
uses
fault
is
3-2
3.2.4
Motor
The
sensor’s
The
sense
signal
processor
3.2.5
Signal
The
converter. A positive microprocessor to
the
3.2.6
Heater
The
heater The
FET the
sensor temperature regulate inhibited
active
processor’s
chopper
coil
is
This
signal
The
motor
to
regulate
via
the
Amplifier
hybrid
and
bias
to
sensor
which
output
signal
is
converted
by
it
to
42°
by a comparator
as
the
sensor
internal
motor
amplified
is
the
MTRGATE
the
detector
used
hybrid
speed
consists
to
generate a synchronized
by
to
U607
properly,
bias
set
the
operating
servos
consists
is
filtered by
the
of a PWM
L600
to a proportional
the
microprocessor. The
C.
As a safety
temperature
A/D
converter
of
two
the
processor
controls
the
equivalent
signal.
contains
so
that
is
point
sensor
signal
signal
and
C614
software
precaution,
monitoring
reaches
for
fault
fixed
coils
for
synchronizing
the
amplitude
of a 30
the
necessary
its
output
of
to
the
photodetector. A negative
to
be
from
before
by the
regulates
the
PWM
the
48°
C.
The
determination.
on
the
stator
drive
voltage,
of
the
ms
circuitry
is
zero-referenced
the
sensor
referenced
the
processor
being
to
bench
the
output
temperature
heater output
and
three
magnets
and
to
processor
drive The
to
activity
signal
motor
can
the
and
using a filtered
bias
zero
volts.
switching a FET
to
the
power
voltage,
This applied
the
heater
this
voltage
override
is
available
on
the
rotor.
generate a motor
to
the
from
the
sense
be
disabled
sensor
in
the
PWM
power
The
is
to
the
output
by
the
detector
range
for
the
output
is
from
also
transistor.
temperature
translated
sensor
can
will
to
to
be
become
the
clock
the
in
to
a
3.2.7
Source
A
source
regulator
in
the
determination.
3.2.8
Barometer
The
barometer achieved The the
3.2.9
On reset turns
by
transducers
processor's
Status
LEDs
power-up,
and
the
on,
indicating a sensor temperature, LED
is
turned
Ifthe
CO2
module
exists,
the
RED
formed
is
by
The
source
back
generates a voltage
differential
internal
the
initialization
allowing
off,
LED
green
and
is
not
will
A/D
LED
sequence
the
sensor
the
green
receiving
flash
U615
and
is
controlled
to
the
microprocessor's
variations
is
converter
five
is
to
start
LED
is
commands
at a rate
R645
provides constant
by the
proportional
at
the
pressure
amplified
for
translation
times
momentarily,
taking
place.
condition.
measuring.
turned
on.
from
of 2 Hz.
microprocessor
internal
to
the
transducer
and
zero-referenced to a barometric
After
the
The
light
When
the
main
the
processor,
A/D
of
via
Q608
converter
atmospheric
with a constant
before
pressure
indicating
green
sensor
LED
on
is
that
until
or a sensor
83.3
mA and for
pressure.
being
reading.
the
flashes,
the
ready
to
to
the
IR
Q606.
The
fault
This
is
presented
processor
the
red
sensor
measure,
fault
condition
source
applied.
to
has
LED
the
red
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