GE Healthcare TruSat User Manual
GE Healthcare
TruSat™ Pulse Oximeter
User’s Guide
GE Healthcare
TruSat™ Pulse Oximeter
User’s Guide
6050-0006-815
March 2005
Important
Rx Only (USA)
Attention! Consult the accompanying instructions, including all safety
precautions, before using this device.
Responsibility of the manufacturer
The safety, reliability, and performance of this device can be assured by the
manufacturer only under the following conditions:
• Assembly, extensions, readjustments, modifications, and repairs are carried out by
authorized personnel.
• The electrical installation complies with relevant standards and regulations.
• The device is used in accordance with this manual and is serviced and maintained in
accordance with the TruSat Technical Reference Manual.
Service and repair
Service and repair procedures must be performed by authorized service personnel.
Repair this device or its parts only in accordance with instructions provided by the
manufacturer. To order replacement parts or for assistance, contact an authorized
service office. When shipping the monitor for repair, clean the monitor, allow it to dry
completely, and pack it for shipment in the original shipping container, if possible.
Trademarks
Datex®, Ohmeda®, TruSat™ and other trademarks (ComWheel™, OxyTip®, PIr®,
TruSignal™, TruTrak®) are the property of GE Healthcare Finland Oy. All other product
and company names are the property of their respective owners.
0537
GE Healthcare Finland Oy
Helsinki, Finland
+358 10 394 11
www.gehealthcare.com
© 2005 General Electric Company. All rights reserved.
1. Overview
Monitor description...................................................................................................1–1
Trend Download option....................................................................................................................... 1–1
Intended use .............................................................................................................................................1–1
TruSat pulse oximetry .............................................................................................1–2
TruSignal Enhanced SpO2..................................................................................................................1–2
PIr pulsatile value ...................................................................................................................................1–2
Measurement characteristics ..........................................................................................................1–2
Interfering substances................................................................................................................1–3
Calibration ........................................................................................................................................1–3
Safety precautions ....................................................................................................1–4
Warnings.....................................................................................................................................................1–4
Cautions ......................................................................................................................................................1–4
Electromagnetic compatibility (EMC)............................................................................................ 1–4
Disposal....................................................................................................................................................... 1–4
2. Features and Use
Monitor features.........................................................................................................2–1
Connectors.................................................................................................................................................2–2
Information label and symbols .......................................................................................................2–2
Buttons and indicators ........................................................................................................................2–3
Power button and power LED................................................................................................. 2–3
Alarm Silence button and indicator ..................................................................................... 2–3
Alarm LED..........................................................................................................................................2–3
Battery indicator............................................................................................................................2–4
On-screen controls................................................................................................................................ 2–4
Using the monitor ......................................................................................................2–5
Monitor checkout....................................................................................................................................2–5
Choosing the sensor .............................................................................................................................2–6
Connecting the sensor.........................................................................................................................2–6
Monitoring the patient .........................................................................................................................2–7
Plethysmographic pulse bar (pleth bar).............................................................................2–7
Changing monitor settings...................................................................................2–8
Using the ComWheel............................................................................................................................ 2–8
Setting alarm limits................................................................................................................................ 2–8
Adjusting pulse beep and alarm volume....................................................................................2–9
Switching the backlight ON/OFF.....................................................................................................2–9
Locking/unlocking monitor settings..............................................................................................2–9
Displaying the perfusion index (PIr)............................................................................................ 2–10
Changing the line power filter....................................................................................................... 2–10
Contents
i
Contents
3. Alarms, Troubleshooting, & Maintenance
Alarms..............................................................................................................................3–1
Alarm priorities.........................................................................................................................................3–1
Alarm activation ......................................................................................................................................3–1
Alarm signals.............................................................................................................................................3–2
Signals for multiple alarms .......................................................................................................3–2
Signals for silenced alarms.......................................................................................................3–2
Troubleshooting..........................................................................................................3–3
Maintenance.................................................................................................................3–5
Battery..........................................................................................................................................................3–5
Cleaning.......................................................................................................................................................3–5
Monitor................................................................................................................................................3–5
Sensors ...............................................................................................................................................3–5
Supplies and accessories....................................................................................................................3–6
Sensors ...............................................................................................................................................3–6
TruSat pulse oximeters ...............................................................................................................3–6
Miscellaneous..................................................................................................................................3–6
Trend Download option..............................................................................................................3–7
TruSat manuals ..............................................................................................................................3–7
4. Compliance and Specifications
Compliance....................................................................................................................4–1
Specifications ...............................................................................................................4–2
Measurement............................................................................................................................................4–2
General................................................................................................................................................4–2
SpO2.....................................................................................................................................................4–2
Pulse rate...........................................................................................................................................4–2
PIr pulsatile value...........................................................................................................................4–2
Monitor.........................................................................................................................................................4–3
General................................................................................................................................................4–3
Display ................................................................................................................................................4–3
Alarms .................................................................................................................................................4–3
Audio....................................................................................................................................................4–3
External power................................................................................................................................4–4
Internal battery power................................................................................................................4–4
Trend Download option..............................................................................................................4–4
Environmental conditions..........................................................................................................4–4
Dimensions and weight..............................................................................................................4–4
ii
A. Trend Download Option
Trend data collection .............................................................................................. A–1
Patient identification number...........................................................................................................A–1
Alarm annunciation capability.......................................................................... A–2
Setting the clock ........................................................................................................ A–2
Printing to the portable printer......................................................................... A–3
Connecting the printer.........................................................................................................................A–3
Printing summary statistics for one or more patients.........................................................A–4
Sample printout: Summary statistics ................................................................................A–4
Printing real-time data.........................................................................................................................A–5
Sample printout: Real-time data..........................................................................................A–5
Trend Download PC software............................................................................. A–6
PC requirements......................................................................................................................................A–6
Software installation.............................................................................................................................A–6
Setup.............................................................................................................................................................A–7
Starting the Trend Download program .......................................................................................A–7
Trend Download program options.......................................................................................A–7
Contents
B. Warranty
Warranty ........................................................................................................................B-1
iii
1. OVERVIEW
This chapter contains:
• A preview of the pulse oximetry features and measurement.
• General safety precautions to consider when using the monitor.
• A brief description of the monitor.
Monitor description
The TruSat™ pulse oximeter is a durable, reliable, and portable monitor. It features
TruSignal™ Enhanced SpO
by an internal battery, which is charged through an external power supply.
Important: When using the monitor for the first time or after removing it from
extended storage, charge the battery for three hours BEFORE you power ON.
The monitor contains an easy-to-read display with a backlight for low-light conditions.
Information that appears on the display includes the following:
and PIr®, a relative perfusion index. The monitor is powered
2
• SpO
, pulse rate, and PIr measurements.
2
• All alarm limit settings.
• Indicators for plethysmographic pulse, battery capacity, and silenced alarms.
The monitor also contains on-screen controls for changing monitor settings, such as
alarm limits, volume, and the backlight. A lock function, when activated, protects against
unintended changes to settings.
The alarm system generates audible and visual signals that vary according to the
priority of the alarm.
Trend Download option
The Trend Download option allows you to set the monitor clock, print, and download
trends to a computer. Monitors can be factory-configured with this option. An upgrade
kit is also available.
NOTE: If your monitor is configured with the Trend Download option, be sure to set the
monitor clock before monitoring patients.
Intended use
The TruSat pulse oximeter is indicated for spot-checking and continuous monitoring of
functional oxygen saturation and pulse rate, including monitoring during conditions of
clinical patient motion
pediatric, and neonatal patients in both hospital and non-hospital environments.
1
or low perfusion. This device is intended for use with adult,
Important: Only OxyTip®+ sensors can be used with this monitor.
1
Anesthesia & Analgesia. 2002;94,1S, S54-S60
1–1
TruSat User’s Guide
TruSat pulse oximetry
TruSignal Enhanced SpO
TruSignal Enhanced SpO2 offers improved performance, especially during challenging
conditions of clinical motion and low perfusion. With ultra-low-noise technology,
TruSignal selects the appropriate clinically-developed algorithm to compensate for
weak or motion-induced signals and generate reliable saturation readings.
2
PIr pulsatile value
The perfusion index measurement—the PIr pulsatile value—is a quick and easy-to-use
clinical tool that provides a dynamic numeric reflection of perfusion at the sensor site.
PI
is a relative value that varies from patient to patient.
r
The PI
pulsatile value indicates the strength of the pulse signal at the sensor site—the
r
higher the PI
validity of SpO
strength of the pulse signal at different sites on a patient in order to locate the best site
for the sensor—the site with the strongest pulse signal.
value, the stronger the pulse signal. A strong pulse signal increases the
r
and pulse rate data. Clinicians can use the PIr value to compare the
2
Measurement characteristics
The pulse oximetry measurement uses a two-wavelength pulsatile system—red and
infrared light—to distinguish between oxyhemoglobin (O
(HHb). The light is emitted from the oximeter sensor, which contains the light source and
a photodetector.
• The light source consists of red and infrared light-emitting diodes (LEDs).
Hb) and reduced hemoglobin
2
• The photodetector is an electronic device that produces an electrical current
proportional to incident light intensity.
The two light wavelengths generated by the LEDs are transmitted through the tissue at
the sensor site and are modulated by arterial blood pulsation. Since other fluids and
tissues present generally don’t pulsate, they don’t modulate the light. The pulsatile
portion of the incoming signal is used to detect and isolate the attenuation of light
energy due to arterial blood flow.
Variable absorption
(due to arterial pulse)
Arterial blood absorption
Venous blood absorption
Absorption
Other tissue absorption
Time
Figure 1-1. Comparative light absorption
1–2
The photodetector in the sensor converts the light intensity information into an
electronic signal. Since O
emitted from the oximeter sensor, different amounts of light reach the photodetector at
the selected wavelengths. The electronic signal varies according to which light source is
“on” (red or infrared) and the oxygenation of the arterial hemoglobin. This information is
used to calculate the relative percentage of O
electronic signal it receives from the photodetector. The SpO
measurements are continuously calculated as a 12-second “moving” average.
Interfering substances
Increased patient carboxyhemoglobin may falsely increase SpO2 readings in all brands
of pulse oximeters. Therefore, saturation readings may be higher for smokers, victims of
smoke inhalation, and patients with carbon monoxide (CO) intoxication. The level of
increase is approximately equal to the amount of carboxyhemoglobin present.
Methemoglobin from certain therapies, dyes that change arterial pigmentation, and
substances at the sensor site that contain dyes ( fingernail polish, for example) may also
cause erroneous readings.
Calibration
The TruSat pulse oximeter uses the functional calibration method. Functional saturation
is represented mathematically as the percentage of hemoglobin capable of carrying
oxygen that is carrying oxygen.
Hb and HHb absorb different amounts of the light that is
2
Hb and HHb. The monitor processes the
2
and pulse rate
2
Overview
O2Hb
Functional SpO
The calculation of SpO
methemoglobin (MetHb), and no interfering dyes. These values are based on the DatexOhmeda Pulse Oximeter Empirical Calibration Study. Appreciable variation from these
values will influence SpO
NOTE: A hospital-grade CO-oximeter, which requires a sample of arterial blood and
typically uses four or more wavelengths of light, calculates carboxyhemoglobin (COHb)
and methemoglobin (MetHb) as well as O
oximeter readings will differ when COHb or MetHb is present.
=
2
( )
Hb
– COHb – MetHb
TOTAL
assumes 1.6% carboxyhemoglobin (COHb), 0.4%
2
accuracy.
2
x 100 =
Hb and HHb. CO-oximeter readings and pulse
2
O2Hb
()
O2Hb + HHb
x 100
1–3
TruSat User’s Guide
Safety precautions
Precautions associated with following safe practices while using the monitor appear
throughout this manual. General precautions are listed below. Carefully read all
precautions in this manual before using the monitor.
NOTE: For complete information about the safe and appropriate use of a sensor,
consult the instructions for that sensor.
Warnings
WARNINGS indicate potentially harmful situations that may cause injury to
a patient or operator.
• It is possible for any device to malfunction. Always verify unusual data by
performing a formal patient assessment.
• Do not use the monitor in the presence of any flammable anesthetic mixture.
• Use only hospital-grade, grounded power outlets.
• Use only sensors and cables specified for use with this monitor. Failure to do so may
cause interference with the measurement or result in increased emissions,
decreased immunity, or damage to the equipment or system.
• This monitor does not measure respiration and should never be used as a substitute
for an apnea monitor.
• This monitor is not intended for use in a magnetic resonance imaging (MRI)
environment.
Cautions
CAUTIONS indicate conditions that may lead to equipment damage or
malfunction.
• Do not store or use the monitor outside the temperature and humidity ranges stated
in the Specifications section of this manual.
Electromagnetic compatibility (EMC)
Electromagnetic interference, including interference from portable and mobile radio
frequency (RF) communications equipment, can affect this monitor.
When using this monitor, take precautions to ensure electromagnetic compatibility. For
more information, refer to the Technical Reference Manual.
Disposal
Recycle or dispose of this medical device, its components, and its packing materials in
accordance with local environmental and waste disposal regulations.
1–4
2. FEATURES AND USE
This chapter contains:
• Descriptions of the monitor’s features and controls.
• Instructions for using the monitor.
• Instructions for changing monitor settings.
Monitor features
NOTE: The monitor is shown without the handle.
Figure 2-1. Monitor features
1 Oxygen saturation (SpO
2 SpO
3 Pulse rate measurement value
4 Pulse rate high and low alarm limit settings, adjustable
5 Plethysmographic pulse bar (pleth bar)
6 Alarm LED
7 Alarm Silence button
8 ComWheel navigation and selection knob for changing monitor settings
9 Display area for on-screen control symbols
10 Battery indicator
11 Power button and external power LED
high and low alarm limit settings, adjustable
2
) measurement value
2
2–1
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