Invivo Escort M8 User manual

Revised October 2004 3800 Vital Signs Monitor Service Manual i
Invivo Research, Incorporated
Orlando, FL 32826
Escort M8 Vital Signs Monitor Service Manual
Part Number 9566, Release 1.
Invivo Research 2004 All Rights Reserved
Printed in the United States of America
The information in this document is subject to change without notice.
This document contains proprietary information that is protected by copyright. No part of this
document may be reproduced in any manner, in whole or in part (except for brief excerpts in
reviews and scientific papers) without the prior written consent of Invivo Research.
Invivo Research makes no warranty of any kind on this material, including but not limited to, the
implied warranties of merchantability and fitness for a particular purpose. Invivo Research shall
not be liable for errors contained herein or for incidental or consequential damages concerning the
furnishing, performance or use of this material.
Invivo Research monitoring devices are intended for use only by qualified medical personnel.
Before using any Invivo Research monitoring device, be sure to read carefully and understand all
manuals provided with the device.
Manufactured by:
InvivoMDE
12601 Research Parkway
Orlando, FL 32826
CAUTION - United States Federal law restricts this device to sale by or on the order of a
physician.

ii 3800 Vital Signs Monitor Service Manual Revised October 2004
User Assistance
If you have a question or need help operating the Escort M8 Vital Signs Monitor, please contact
InvivoMDE Technical Service:
US: [phone]
Int’l: [phone]
For the latest information about InvivoMDE products, please consult out web site:
www.intermagnetics.com

Revised October 2004 3800 Vital Signs Monitor Service Manual iii
Table of Contents
Paragraph Number Page Number
General Information....................................................................................................................... vi
Precautions..................................................................................................................................... ix
Patents and Licensing .................................................................................................................. xiv
1. OVERVIEW................................................................................................................... 1-1
1.1 Escort M8 Vital Signs Monitor Diagrams ....................................................................... 1-1
1.2 Escort M8 Vital Signs Monitor User Interface................................................................ 1-4
1.3 Main Features of the Escort M8 Vital Signs Monitor ..................................................... 1-5
2. INSTALLATION AND CHECKOUT......................................................................... 2-1
2.1 Preinstallation .................................................................................................................. 2-1
2.2 How to Connect the Escort M8 Vital Signs Monitor to Power ....................................... 2-1
2.2.1 Operational Checkout Procedure ..................................................................................... 2-2
3. CONFIGURING THE MONITOR.............................................................................. 3-1
3.1 System Setup.................................................................................................................... 3-1
3.1.1 Setup Menu ...................................................................................................................... 3-1
3.1.2 Setup Biomedical Menu................................................................................................... 3-1
4. BATTERY OPERATION............................................................................................. 4-1
5. FUNCTIONAL VERIFICATION................................................................................ 5-1
6. TROUBLESHOOTING ................................................................................................ 6-1
6.1 Power-up Malfunctions.................................................................................................... 6-1
6.1.1 Display Is Blank At Power-Up (No Power LED Illuminated) ........................................ 6-1
6.1.2 Display Is Blank At Power-Up (with Power LED Illuminated)...................................... 6-1
6.1.3 Monitor Only Displays the Power-Up (“Invivo)MDE M8”) Banner .............................. 6-2
6.1.4 Power-Up Banner Is Followed by A Blank Screen ......................................................... 6-3
6.1.5 Monitor Does Not Run on Battery Power ....................................................................... 6-3
6.2 Physiological Monitoring Malfunctions .......................................................................... 6-3
6.2.1 Monitor Won’t Display an ECG or Respiration Signal................................................... 6-3
6.2.2 Monitor Displays Constant ECG Pacer Annotations....................................................... 6-4
6.2.3 Monitor Displays an “SPO2 Replace Sensor” Message.................................................. 6-4
6.2.4 Monitor Displays a “Temp Needs Service” Message...................................................... 6-4
6.2.5 Monitor Displays an “NBP Needs Service” Message ..................................................... 6-4
6.3 Non-Physiological Monitoring Malfunctions.................................................................. 6-5
6.3.1 Optional Recorder Not Working...................................................................................... 6-5
6.3.2 Missing Rows or Sections of Display Pixels ................................................................... 6-6
6.3.3 Other Technical Messages ............................................................................................... 6-6
6.4 Reducing EMI.................................................................................................................. 6-6
7. REPAIR .......................................................................................................................... 7-1
7.1 External Chassis Components ......................................................................................... 7-2
7.2 Functional Block Diagram............................................................................................... 7-3
7.3 Cable Interconnection/Wiring Diagram........................................................................... 7-4

iv 3800 Vital Signs Monitor Service Manual Revised October 2004
Table of Contents (Continued)
Paragraph Number Page Number
7.4 Major Assembly Views ................................................................................................... 7-5
7.4.1 Assembly/Subassembly Views ........................................................................................ 7-7
7.5 Monitor Disassembly Procedure.................................................................................... 7-14
7.6 Monitor Reassembly Procedure..................................................................................... 7-14
7.7 Replacing the Display.................................................................................................... 7-14
7.8 Replacing the Optional Recorder Assembly.................................................................. 7-14
7.9 Replacing the SPO2 Masimo Board .............................................................................. 7-15
7.10 Replacing the Power Supply Board ............................................................................... 7-15
7.11 Replacing the Battery Charger Board............................................................................ 7-15
7.12 Replacing Cracked Case Pieces..................................................................................... 7-15
8. ACCESSORIES ............................................................................................................. 8-1
9. SPARE PARTS .............................................................................................................. 9-1
10. CLEANING.................................................................................................................. 10-1
11. MAINTENANCE AND STORAGE........................................................................... 11-1
11.1 Battery Replacement...................................................................................................... 11-3
11.2 Storage ........................................................................................................................... 11-4
11.3 Warranty ........................................................................................................................ 11-4
11.4 Password Control........................................................................................................... 11-4
12. DISPOSAL ................................................................................................................... 12-1
13. TECHNICAL DATA................................................................................................... 13-1

Revised October 2004 3800 Vital Signs Monitor Service Manual v
List of Figures
Figure Number Page Number
1-1 Escort M8 Vital Signs Monitor - Front View .................................................................. 1-1
1-2 Escort M8 Vital Signs Monitor - Left Rear View ........................................................... 1-2
1-3 Escort M8 Vital Signs Monitor - Right Rear View ......................................................... 1-2
1-4 Escort M8 Vital Signs Monitor - Left Side View............................................................ 1-3
1-5 Front Panel Keypad ......................................................................................................... 1-4
1-6 Example of Escort M8 Vital Signs Monitor Normal Screen ........................................... 1-5
2-1 Escort M8 Vital Signs Monitor Normal Screen............................................................... 2-2
3-1 Setup Menu ...................................................................................................................... 3-1
3-2 Setup Biomedical Menu................................................................................................... 3-1
3-3 Setup Configuration Menu............................................................................................... 3-2
3-4 Enter Password Menu ...................................................................................................... 3-2
3-5 Setup Alarm System Menu .............................................................................................. 3-3
3-6 Setup System Menu ......................................................................................................... 3-4
3-7 Setup Service Menu ......................................................................................................... 3-4
4-1 Normal Screen Showing Battery Icon ............................................................................. 4-1
7-1 External Chassis Components ......................................................................................... 7-2
7-2 M8 Overall Functional Block Diagram ........................................................................... 7-3
7-3 M8 Cable Interconnection/Wiring Diagram .................................................................... 7-4
7-4 Monitor Major Assembly View....................................................................................... 7-5
7-5 Battery Cover Major Assembly View ............................................................................. 7-6
7-6 Battery Cover Assembly View ........................................................................................ 7-7
7-7 Monitor Front Bezel Assembly View A (Rear)............................................................... 7-8
7-8 Monitor Front Bezel Assembly View B (Front).............................................................. 7-9
7-9 Monitor Rear Case Assembly View .............................................................................. 7-10
7-10 Input Panel Assembly View .......................................................................................... 7-11
7-11 Recorder Subassembly View ......................................................................................... 7-12
7-12 Input Panel Subassembly View ..................................................................................... 7-13

vi 3800 Vital Signs Monitor Service Manual Revised October 2004
General Information
This Service Guide provides information for the Invivo Research Escort M8 Vital Signs Monitor.
The Escort M8 Vital Signs Monitor is a small, lightweight patient monitor designed to acquire
and display physiological waveforms and parameters.
Before using the Escort M8 Vital Signs Monitor, be sure to read carefully and understand all
sections of this Service Guide. Failure to read and understand the instructions may lead to misuse
of the Escort M8 Vital Signs Monitor, which could result in harm to the patients.

Revised October 2004 3800 Vital Signs Monitor Service Manual vii
Typographical Conventions in this Service Guide
This guide contains warnings, cautions and notes to help call your attention to the most important
safety and operational aspects of the system. To help identify these items when they occur in the
text, they are shown using the following typographical conventions:
WARNING - Statements that call attention to the possibility of injury, death or other
serious adverse reactions associated with the use or misuse of the device.
CAUTION - Statements that call attention to the possibility of a problem with the device
associated with its use or misuse. Such problems include device malfunction, device failure,
damage to the device or damage to other property.
NOTE - Statements that provide supplemental information.

viii 3800 Vital Signs Monitor Service Manual Revised October 2004
Indications for Use
The Escort M8 Vital Signs Monitor is indicated for use in adult and pediatric patient populations
in an environment where patient care is provided by healthcare professionals (e.g. Physician,
Nurse, Technician) when:
1. The professional determines that a device is required to measure any or all of the
following patient parameters:
• Heart Rate
• Respiration Rate
•Temperature
• Systolic, Mean and Diastolic Blood Pressure
• Functional Oxygen Saturation of Arterial Hemoglobin (SpO2)
• Pulse Rate
And,
2. The professional determines that a device is required to issue visible and audible
alarms when any or all of the following parameters exceed preset limits:
• Heart Rate
• Respiration Rate
•Temperature
• Systolic, Mean and Diastolic Blood Pressure
• Functional Oxygen Saturation of Arterial Hemoglobin (SpO2)
• Pulse Rate

Revised October 2004 3800 Vital Signs Monitor Service Manual ix
Precautions
General
Electrosurgery. The Escort M8 Vital Signs Monitor is suitable for use in the presence of
electrosurgical (ESU) equipment. The following precautions should be taken:
• To minimize the risk of patient burns, only use ESU equipment that monitors the
impedance of the ESU return wires.
• Users should be properly trained in the operation of the ESU equipment.
• Keep patient applied cables (e.g. ECG lead wires) off of earth ground and away
from the ESU knife and return wires.
• Only use Invivo Research recommended accessories.
• While cutting, use the SpO2 parameter instead of the ECG parameter to determine
heart rate.
Alarm Monitoring. Failure to respond to alarms that are annunciated by the Escort M8 Vital
Signs Monitor will cause a lapse in patient monitoring. Always respond promptly to alarms.
Flammable Anesthetics. An explosion hazard exists if the monitor is used in the presence of
flammable anesthetics.
Anesthesia Patients. Constant attention by a qualified individual is needed whenever a patient is
under anesthesia or connected to a ventilator.
Device Interconnections. Through its Network Connector port, the Escort M8 Vital Signs
Monitor can be connected to external devices. The following precautions should be taken:
• The Network Connector cable should not be applied to the patient.
• Connected devices should be located outside of the patient vicinity (greater than
1.5 meters) if they do no comply with IEC 60601-1.
• The Escort M8 Vital Signs Monitor should not be connected to devices that are not
described in this manual.
• The over-all system leakage current should be tested and should comply with IEC
60601-1-1.
Do not operate the Escort M8 Vital Signs Monitor near high frequency emissions (e.g.
microwaves).
Single use devices should not be reused.
The accuracy of the measurements can be affected by the position of the patient, the patient’s
physiological condition, and other factors. Always consult a physician for interpretation of
measurements made by this monitor.
If any system failure occurs (e.g. an unexplained continuous audible alarm) remove the monitor
from use, and refer it to qualified service personnel.
Perform operational checkout before each use. If monitor fails to function properly, refer to
qualified service personnel.
For safe and accurate operation, use only recommended Invivo Research patient cable, lead wires,
cuffs, hoses, sensors, tubing, etc. A listing of these can be found in the Accessory Listing within
this manual, or by contacting Invivo Research directly.
The system may not conform to all performance specifications if stored or used outside the
environmental specifications identified in Section 12.
For proper equipment maintenance, perform the service procedures at the recommended intervals
as described in the monitor’s service manual.

x3800 Vital Signs Monitor Service Manual Revised October 2004
Precautions
Electrical Safety
If monitor becomes accidentally wet during use, discontinue operation of the monitor until all
affected components have been cleaned and permitted to dry completely. Contact your local
Invivo Research, Inc. representative if additional information is required.
Shock hazard exists if operated without chassis cover. Refer servicing to qualified service
personnel only.
For continued protection against fire hazard, replace fuses with same type and rating only.
Connect the monitor only to a three-wire, grounded, hospital-grade receptacle. The three-
conductor plug must be inserted into a properly wired three-wire receptacle; if a three-wire
receptacle is not available, a qualified electrician must install one in accordance with the
governing electrical code.
Do not under any circumstances remove the grounding conductor from the power plug.
Avoid use of electrical power extension cords. Electrical power extension cords may create a
safety hazard by compromising the grounding integrity of the monitor.
This monitor and its listed accessories may be safely powered by the voltages 110-120/220-240
VAC having a frequency of 50 or 60 Hz.
If the integrity of the earth ground conductor of the AC mains power cable is in doubt, operate the
monitor on internal battery power until proper earth ground connection is confirmed.
Patient Safety
As with all medical equipment, carefully route patient cabling to reduce the possibility of patient
entanglement or strangulation.
ECG
Pacemaker Patients. Rate meters may continue to count the pacemaker rate during occurrences
of cardiac arrest or some arrhythmias. Do not rely entirely upon rate meter alarms. Keep
pacemaker patients under close surveillance. See the Technical Data chapter for disclosure of the
pacemaker pulse rejection capability of this instrument.
Arrhythmia Patients. The Escort M8 Vital Signs Monitor is designed to operate in the presence
of cardiac arrhythmias. However, the heart rate meter may be adversely affected in some cases.
An inoperative ECG monitor is indicated by absence of an ECG waveform and a simultaneous
Lead Fail alarm.
For best ECG, Heart Rate, S-T Segment, and/or Respiration monitoring, always select the
optimum lead configuration which has the least artifact and largest waveform(s) being detected
for monitoring use.
NIBP
Always use recommended NIBP cuffs and hoses. Avoid compression or restriction of NIBP cuff
hose.
When using the NIBP portion of this instrument to measure blood pressure, remember that the
patient’s blood pressure readings are not continuous, but are updated each time a blood pressure
measurement is taken. Set a shorter interval for more frequent updating of the patient’s blood
pressure.
Do not attach the cuff to a limb being used for infusion. Cuff inflation can block infusion,
possibly causing harm to the patient.
Frequent NIBP measurements can cause pooling of the blood in the limb (hemostasis), and
peripheral tissue/nerve damage. Allow sufficient time between measurements for blood
recirculation to prevent pooling of the blood in the limb.

Revised October 2004 3800 Vital Signs Monitor Service Manual xi
Precautions
NIBP (Continued)
Arrhythmic and/or erratic heart beats (or severe motion artifact, such as tremors or convulsions)
can result in inaccurate readings and/or prolonged measurements. If questionable readings are
obtained, re-check patient’s vital signs by alternate means before administering medication.
To prevent possible nerve damage to the limb, apply the NIBP cuff as recommended by current
American Heart Association (AHA) guidelines for blood pressure monitoring.
To ensure accurate and reliable measurements, use only recommended patient cuffs/hoses. For
best accuracy, use the appropriate cuff size for each patient as recommended by the current AHA
guidelines for blood pressure monitoring.
Some reusable NIBP cuffs contain a medical-grade latex rubber. Patients sensitized to latex
rubber can have an allergic reaction when exposed to this material. Avoid the use of cuffs which
contain latex rubber on patients who are allergic to this material.
Routinely inspect the cuff and hose assemblies for proper attachment and orientation. Replace
cuff and/or hose assemblies with cracks, holes, tears, cuts, etc. that could cause leaks in the
system. If cuff and/or hose assemblies with damage which could result in leaks are used,
prolonged and/or inaccurate patient readings could result.
SpO2
Avoid placement of the SpO2 sensor on the same limb with an inflated blood pressure cuff. Cuff
inflation could result in inaccurate readings and false alarm violations.
SpO2 monitoring requires the detection of valid pulses to correctly determine SpO2 and Heart
Rate values. During conditions of gross artifact, or in the absence of valid pulses, the SpO2 /rate
values may not be correct.
The SpO2 monitoring portion of this monitor is intended to measure arterial hemoglobin oxygen
saturation of functional hemoglobin (saturation of hemoglobin functionally available for
transporting oxygen in the arteries). Significant levels of dysfunctional hemoglobins, such as
carboxyhemoglobin or methemoglobin, may affect the accuracy of the measurement. Also,
Cardiogreen and other intravascular dyes may, depending on their concentration, affect the
accuracy of the SpO2 measurement.
Always shield the SpO2 sensor from extraneous incident light sources. Such extraneous light can
cause SpO2 reading or pulse detection errors.
The numeric measurement values are updated every 1 second on the monitor display.
A pulse oximeter should be considered an early warning device. As a trend towards patient
deoxygenation is indicated, blood samples should be analyzed by a laboratory co-oximeter to
completely understand the patient’s condition.
Use of this monitor may interfere with magnetic resonance imaging (MRI) procedures.
The pulse oximeter feature in this monitor is designed to display functional SpO2 values.
The pulse oximeter pulsatile waveform is not proportional to the pulse volume, but adjusts the
waveform amplitude as needed for proper viewing.
Arrhythmic and/or erratic heart beats (or severe motion artifact, such as tremors or convulsions)
can result in inaccurate readings and/or prolonged measurements. If questionable readings are
obtained, re-check patient’s vital signs by alternate means before administering medication.

xii 3800 Vital Signs Monitor Service Manual Revised October 2004
Precautions
Temperature (SureTemp®PLUS)
To obtain accurate and reliable temperature measurements and to ensure patient safety, it is
important that this manual be read thoroughly prior to use of the module, probe and accessories.
Use single-use Welch Allyn disposable probe covers to limit patient cross-contamination. The use
of any other probe cover may produce temperature measurement errors or may result in
inaccurate readings.
Do not take a patient’s temperature without using a Welch Allyn disposable probe cover. Doing
so can cause patient discomfort, patient cross-contamination, and erroneous temperature readings.
Long-term continuous monitoring (beyond five minutes) is not recommended.
Biting the probe tip while taking a temperature may result in damage to the probe.
To ensure patient safety and accurate temperature measurement, use only Welch Allyn
accessories and supplies.
This equipment is not suitable for use in the presence of a flammable anesthetic mixture with air,
oxygen, or nitrous oxide. The probe and connector are not waterproof. Do not immerse or drip
fluids on these items. Should immersion or wetting occur, dry the device with warm air and then
check all functions for proper operation.
The Welch Allyn SureTemp®PLUS probe consists of high-quality precision parts. Protect it from
severe impact and shock. A qualified service technician must check any SureTemp®PLUS probe
which is dropped or damaged to ensure proper operation prior to further use. Do not use the probe
if you notice any signs of damage.
Do not autoclave. To prevent damage to the module, probe, and accessories, refer to the cleaning
procedures described in Section 10.

Revised October 2004 3800 Vital Signs Monitor Service Manual xiii
Precautions
Other
This product, or any of its parts, should not be repaired other than in accordance with written
instructions provided by InvivoMDE, or altered without prior written approval of Invivo Research
Inc.
The user of this product shall have the sole responsibility for any malfunction which results from
improper use, faulty maintenance, improper repair, damage, or alteration by anyone other than
Invivo Research Inc., or its authorized service personnel.
This monitor is equipped with a demonstration mode which displays simulated electronic patient
data for training or demonstration purposes. Do not attach a patient to the monitor whenever this
simulation is present on the monitor display (“Simulated data” can also be seen in the message
area of the normal screen). Failure to properly monitor the patient could result. Access is only
available with the use of the Service Passord. To exit this mode, the Simulation Mode is set to Off
in the Setup Service menu then the monitor must be powered off.
The patient connector inputs for all parameters are protected against the use of a defibrillator by
internal circuitry, and when the recommended patient cables or accessories are used. The use of
this circuitry and these recommended cables and accessories also protects against the hazards
resulting from use of high frequency surgical equipment.
There are no known electromagnetic or other hazardous interference between the monitor and
other devices. Medical equipment requires special precautions regarding EMC and must be
installed, and put into service, according to the EMC information provided in the Operations
Manual. However, care should be taken to avoid the use of cellular phones or other unintended
radio-frequency transmitters in the proximity of the monitoring system.
Portable and mobile RF communications equipment can affect medical electrical equipment.
This monitor uses rechargeable batteries that contain lithium. These batteries must be recycled or
disposed of properly. For proper disposal methods, contact your local InvivoMDE. representative
or distributor.
Dispose of the monitor and parts thereof according to local regulations.
Battery Handling. The Escort M8 Vital Signs Monitor contains a lithium ion coin cell battery
and a transport battery pack. The following precautions should be taken regarding these batteries:
• Do not immerse in water.
• Do not heat or throw in fire.
• Do not leave in conditions over 60 OC or in a heated car.
• Do not attempt to crush or drop.
• Follow the instructions in the disposal section of this manual when the Escort M8
Vital Signs Monitor is taken out of service.
For continued operation, always connect the monitor to a wall outlet when a Low Battery alarm
indication occurs. Failure to do this can lead to an interruption of monitoring.
The battery may need to be recharged if the Escort M8 Vital Signs Monitor has been powered off
for an extended period of time. See the Battery Operation section of this manual for details
regarding charging the battery.

xiv 3800 Vital Signs Monitor Service Manual Revised October 2004
Patents and Licensing
This device is covered under one or more of the following U.S. Patents: 5,482,036; 5,490,505;
5,632,272; 5,685,299; 5,758,644; 5,769,785; 6,002,952; 6,036,642; 6,067,462; 6,206,830;
6,157,850; 6,277,081 and international equivalents. U.S.A. and international patents pending.
Possession or purchase of this device does not convey any express or implied license to use the
device with replacement parts which would, alone, or in combination with this device, fall within
the scope of one or more of the patents relating to this device.

Overview
Revised October 2004 3800 Vital Signs Monitor Service Manual 1-1
1. Overview
This chapter provides a basic overview of the Escort M8 Vital Signs Monitor user interface and a
list of the Escort M8 Vital Signs Monitor’s main features.
1.1 Escort M8 Vital Signs Monitor Diagrams
Figure 1-1. Escort M8 Vital Signs Monitor - Front View

Overview
1-2 3800 Vital Signs Monitor Service Manual Revised October 2004
Figure 1-2. Escort M8 Vital Signs Monitor - Left Rear View
Figure 1-3. Escort M8 Vital Signs Monitor - Right Rear View

Overview
Revised October 2004 3800 Vital Signs Monitor Service Manual 1-3
Figure 1-4. Escort M8 Vital Signs Monitor - Left Side View