GE Corometrics 170 Series User manual

Corometrics®170 Series
SERVICE MANUAL MANUAL P/N 2000947-004 REV. C

Corometrics® 170 Series
SERVICE MANUAL MANUAL P/N 2000947-004 REV. C

Corometrics and Marquette are registered trademarks of GE Medical Systems Information Technologies. GE is a registered
trademark of General Electric Company. All other product and brand names are trademarks or registered trademarks of their
respective companies. ©2002-2004 GE Medical Systems Information Technologies. All rights reserved. No part of this
manual may be reproduced without the permission of GE Medical Systems Information Technologies.
GUARANTEE
All equipment sold by GE Medical Systems Information Technologies, is fully guaranteed as to
materials and workmanship for a period of 1 year. Information Technologies reserves the right to
perform guarantee service operations in its own factory, at an authorized repair station, or in the
customer’s installation.
Our obligation under this guarantee is limited to repairing, or, at our option, replacing any
defective parts of our equipment, except fuses or batteries, without charge, if such defects occur in
normal service.
Claims for damage in shipment should be filed promptly with the transportation company. All
correspondence covering the instrument should specify the model and serial numbers.
GE Medical Systems Information Technologies
A GE Medical Systems Company
GE Medical Systems Information Technologies will make available on request such circuit
diagrams, component diagrams, component parts lists, descriptions, calibration instructions, or
other information which will assist the users or appropriately qualified technical personnel to
repair those parts of the equipment which are classified by GE Medical Systems Information
Technologies as repairable. Refer to the service manual for further information.
CAUTION: In the United States of America, Federal Law restricts this device to sale by or
on the order of a physician.
!

Revision C Corometrics 170 Series 5
2000947-004
Contents
1Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
General Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
Definitions of Terminology . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
Monitor Contraindications, Warnings, and Precautions . . . . . . . . . . . . . . . . . . . . 1-4
Equipment Symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-9
2Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
Indications for Use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
Monitoring Methods . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4
About Your Monitor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5
3Controls, Indicators, and Connectors . . . . . . . . . . . . . . . 3-1
Front Panel Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2
Front Panel Displays and Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6
Front Panel Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-8
Strip Chart Recorder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-12
Rear Panel Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-14
4Setup Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
Loading Strip Chart Paper . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2
Turning the Monitor On . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-7

6 Corometrics 170 Series Revision C
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Monitor Self-Test Routines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-8
Customizing the Monitor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-10
Quick Reference Card . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-18
Flasher Software Utility Upgrade . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-20
5Theory of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1
Functional Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2
Main Board Theory of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-17
FECG/IUP Board Theory of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-36
6Functional Checkout Procedure . . . . . . . . . . . . . . . . . . . 6-1
Equipment Required . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-3
Monitor Self-Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-4
Front Panel Pushbutton Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-5
Connecting the Simulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-6
FECG Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-7
Legplate Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-12
Ultrasound Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-13
Fetal Movement Detection Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-16
Ultrasound Transducer Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-18
Uterine Activity Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-19
Tocotransducer Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-21
Strain Gauge Transducer Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-22
Pattern Memory Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-23
Dual Heart Rate Test (Non-Pattern) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-24

Revision C Corometrics 170 Series 7
2000947-004
Alarm Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-28
7Serviceable Assemblies . . . . . . . . . . . . . . . . . . . . . . . . . . 7-1
General Anti-Static Handling Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-2
Transducer Plug Replacement Kits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-3
Nautilus Transducer Cable Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-15
Removing the Monitor Top Cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-19
Tocotransducer Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-20
Nautilus Ultrasound Transducer Top Cover Replacement . . . . . . . . . . . . . . . . . 7-30
Nautilus Transducer Reassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-32
Testing a Repaired Transducer (TOCO or US) . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-34
Replacing the Main Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-35
Replacing the FECG/IUP Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-36
Replacing the Membrane Switch Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-37
Replacing a Front Panel Connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-40
Servicing the Recorder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-41
Boot ROM Error Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-49
8Peripheral Devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-1
Remote Marks Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-2
Telemetry Connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-3
RS-232 Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-4
9Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-1
Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-2
Preventative Maintenance Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-5

8 Corometrics 170 Series Revision C
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10 Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-1
General Monitor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-2
Operating Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-3
Strip Chart Recorder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-4
11 Parts Lists . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-1
2000268-188, Model 171 Final Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-2
2000268-189, Model 172 Final Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-5
2001972-037, Model 173 Final Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-8
2001972-038, Model 174 Final Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-11
2264AAX, Button-Style Nautilus Tocotranducer Assembly Parts List . . . . . . . 11-14
5700GAX, Button-Style Nautilus Ultrasound Transducer Assembly Parts List 11-15
5700KAX, Loop-Style Nautilus Ultrasound Transducer Assembly Parts List . 11-16
2264DAX, Loop-Style Nautilus Tocotransducer Assembly Parts List (5-ft cord) 11-17
1509AAO/BAO, Qwik Connect Plus Legplate Assembly Parts List . . . . . . . . . 11-18
Block Diagrams. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-19

Revision C 170 Series Monitor 1-1
2000947-004
Chapter 1
Safety 1
The information presented in this section is important for the safety of both the
patient and operator and also serves to enhance equipment reliability. This chapter
describes how the terms Danger, Warning, Caution, Important, and Note are used
throughout the manual. In addition, standard equipment symbols are defined.
This section includes the following important information:
General Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
Definitions of Terminology . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
Monitor Contraindications, Warnings, and Precautions . . . . . . . . . . 1-4
Equipment Symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-9
!

1-2 170 Series Monitor Revision C
2000947-004
Safety: General Information
General Information
General Use
If the monitor is cold to the touch or below ambient temperature, allow it to stabilize
before use.
To ensure patient safety, use only parts and accessories manufactured or
recommended by GE Medical Systems Information Technologies. Parts and
accessories used shall meet the requirements of EN60601.1.1.
Disposable devices are intended for single use only. They should not be reused.
Periodically, and whenever the integrity of the monitor is in doubt, test all functions.
Refer to the “Maternal/Fetal Monitoring Operator’s Manual” for information
concerning the limitations of internal and external fetal heart rate monitoring
techniques.
Responsibility of the Manufacturer
GE is responsible for the effects on safety, reliability, and performance if:
assembly operations, extensions, readjustments, modifications, or repairs are
carried out by persons authorized by GE;
the electrical installation of the relevant room complies with the requirements of
appropriate regulations; and
the monitor is used in accordance with the instructions of use.
Responsibility of the User
This device is intended for use by clinical professionals who are expected to know
the medical procedures, practices, and terminology required to monitor obstetrical
patients. This manual documents all possible parameters available in the 170 Series
of monitors. It is the responsibility of each hospital to ensure that the Labor and
Delivery staff is trained in all aspects of the selected model.
The 170 Series Monitor is designed to assist the perinatal staff by providing
information regarding the clinical status of the fetus during labor. The monitor does
not replace observation and evaluation of the mother and fetus at regular intervals,
by a qualified care provider, who will make diagnoses and decide on treatments or
interventions. Visual assessment of the monitor display and strip chart must be
combined with knowledge of patient history and risk factors to properly care for the
mother and fetus.

Revision C 170 Series Monitor 1-3
2000947-004
Safety: Definitions of Terminology
Definitions of Terminology
Six types of special notices are used throughout this manual. They are: Danger,
Warning, Caution, Contraindication, Important, and Note. The warnings and
cautions in this Safety section relate to the equipment in general and apply to all
aspects of the monitor. Be sure to read the other chapters because there are
additional warnings and cautions which relate to specific features of the monitor.
When grouped, warnings and cautions are listed alphabetically and do not imply any
order of importance.
Table 1-1. Definitions of Terminology
Danger
A DANGER notice indicates an imminently
hazardous situation which, if not avoided, will result
in death or serious injury.
Warning
A WARNING indicates a potentially hazardous
situation which, if not avoided, could result in death
or serious injury.
Caution
A CAUTION indicates a potentially hazardous
situation which, if not avoided, may result in minor
or moderate injury. Cautions are also used to
avoid damage to equipment.
Contraindication
A CONTRAINDICATION describes any special
symptom or circumstance that renders the use of a
remedy or the carrying out of a procedure
inadvisable, usually because of a risk.
Important
An IMPORTANT notice indicates an emphasized
note. It is something you should be particularly
aware of; something not readily apparent.
Note A NOTE indicates a particular point of information;
something on which to focus your attention.

1-4 170 Series Monitor Revision C
2000947-004
Safety: Monitor Contraindications, Warnings, and Precautions
Monitor Contraindications, Warnings, and
Precautions
Warnings
WARNINGS
ACCIDENTAL SPILLS—In the event that fluids are accidentally
spilled on the monitor, take the monitor out of operation and
inspect for damage.
APPLICATION—This monitor is not designed for direct cardiac
connection.
CONDUCTIVE CONNECTIONS—Avoid making any
conductive connections to applied parts (patient connection)
which are likely to degrade safety.
CONDUCTIVE PARTS—Ensure that the conductive parts of the
lead electrodes and associated connectors do not contact other
conductive parts including earth.
DEFIBRILLATION—During defibrillation, all personnel must
avoid contact with the patient and monitor to avoid a dangerous
shock hazard. In addition, proper placement of the paddles in
relation to the electrodes is required to minimize harm to the
patient.
ELECTRICAL SHOCK—To reduce the risk of electrical shock,
do not remove monitor cover. Refer servicing to qualified
personnel.
ELECTROMAGNETIC INTERFERENCE—Be aware that
strong electromagnetic fields may interfere with monitor
operation. Interference prevents the clear reception of signals by
the monitor. If the hospital is close to a strong transmitter such as
TV, AM or FM radio, police or fire stations, a HAM radio
operator, an airport, or cellular phone, their signals could be
picked up as signals by the monitor. If you feel interference is
affecting the monitor, contact your Service Representative to
check the monitor in your environment. Refer to page 1-8 for
additional information.

Revision C 170 Series Monitor 1-5
2000947-004
Safety: Monitor Contraindications, Warnings, and Precautions
WARNINGS
ELECTROSURGERY—The monitor is not designed for use with
high-frequency surgical devices. In addition, measurements may
be affected in the presence of strong electromagnetic sources such
as electrosurgery equipment.
EXPLOSION HAZARD—Do not use this equipment in the
presence of flammable anesthetics or inside an oxygen tent.
GROUNDING—Do not defeat the three-wire grounding feature
of the power cord by means of adaptors, plug modifications, or
other methods. A dangerous shock hazard to both patient and
operator may result.
INSTRUCTIONS—For continued and safe use of this equipment,
it is necessary to follow all listed instructions. However, the
instructions provided in this manual in no way supersede
established medical procedures concerning patient care. The
monitor does not replace observation and evaluation of the
patient, at regular intervals, by a qualified care provider who will
make diagnoses and decide on treatments and interventions.
INTERFACING OTHER EQUIPMENT—Monitoring equipment
must be interfaced with other types of medical equipment by
qualified biomedical engineering personnel. Be certain to consult
manufacturers’ specifications to maintain safe operation.
LEAKAGE CURRENT TEST—The interconnection of auxiliary
equipment with this device may increase the total leakage current.
When interfacing with other equipment, a test for leakage current
must be performed by qualified biomedical engineering personnel
before using with patients. Serious injury or death could result if
the leakage current exceeds applicable standards. The use of
accessory equipment not complying with the equivalent safety
requirements of this equipment may lead to a reduced level of
safety of the resulting system. Consideration relating to the
choice shall include: use of the accessory in the patient vicinity;
and evidence that the safety certification of the accessory has been
performed in accordance with the appropriate EN60601.1 and/or
EN60601.1.1 harmonized national standard.

1-6 170 Series Monitor Revision C
2000947-004
Safety: Monitor Contraindications, Warnings, and Precautions
WARNINGS
LINE ISOLATION MONITOR TRANSIENTS—Line isolation
monitor transients may resemble actual cardiac waveforms, and
thus cause incorrect heart rate determinations and alarm activation
(or inhibition).
STRANGULATION—Make sure all patient cables, leadwires,
and tubing are positioned away from the patient’s head to
minimize the risk of accidental strangulation.
WATER BIRTHS—Do not use the monitor to directly monitor
patients during water births, in whirlpool or submersion water
baths, during showers, or in any other situation where the mother
is immersed in water. Doing so may result in electrical shock
hazard.

Revision C 170 Series Monitor 1-7
2000947-004
Safety: Monitor Contraindications, Warnings, and Precautions
Cautions
CAUTIONS
ANNUAL SERVICING—For continued safety and performance
of the monitor, it is recommended that the calibration, accuracy,
and electrical safety of the monitor be verified on an annual basis
by an GE Service Representative.
DAILY TESTING—It is essential that the monitor and
accessories be inspected every day. It is recommended practice to
initiate the monitor’s self-test feature at the beginning of each
monitoring session; follow the instructions in “Chapter 4, Setup
Procedures”.
ENVIRONMENT—The performance of the monitor has not been
tested in certain areas, such as x-ray and imaging suites. The
monitor is not recommended for use in these environments.
PERFORMANCE—Report all problems experienced with the
monitor. If the monitor is not working properly, contact your
Service Representative for service. The monitor should not be
used if it is not working properly.
PINCHING—Keep fingers clear of the paper roller because the
roller could pinch your fingers.
TRAPPING—Keep hands, hair, jewelry, and loose clothing away
from the paper roller because the roller could trap these items.
TRIPPING—Arrange monitoring equipment so that cords and
cables do not present a tripping hazard.

1-8 170 Series Monitor Revision C
2000947-004
Safety: Monitor Contraindications, Warnings, and Precautions
Electromagnetic Interference
This device has been tested and found to comply with the limits for medical devices
to the IEC 601-1-2:1993, EN60601-1-2:1994, Medical Device Directive 93/42/EEC.
These limits are designed to provide reasonable protection against harmful
interference in a typical medical installation.
However, because of the proliferation of radio-frequency transmitting equipment
and other sources of electrical noise in the health-care and home environments (for
example, cellular phones, mobile two-way radios, electrical appliances), it is
possible that high levels of such interference due to close proximity or strength of a
source, may result in disruption of performance of this device.
This equipment generates, uses, and can radiate radio frequency energy and, if not
installed and used in accordance with these instructions, may cause harmful
interference with other devices in the vicinity. Disruption or interference may be
evidenced by erratic readings, cessation of operation, or incorrect functioning. If this
occurs, the site of use should be surveyed to determine the source of this disruption,
and actions taken to eliminate the source.
The user is encouraged to try to correct the interference by one or more of the
following measures:
Turn equipment in the vicinity off and on to isolate the offending equipment.
Reorient or relocate the other receiving device.
Increase the separation between the interfering equipment and this equipment.
If assistance is required, contact your GE Service Representative.

Revision C 170 Series Monitor 1-9
2000947-004
Safety: Equipment Symbols
Equipment Symbols
The following is a list of symbols used on products manufactured by GE. Some
symbols may not appear on your unit.
CAUTION
AC MAINS—The On/Standby switch does not disconnect the
monitor from AC mains power. To completely remove power, you
must disconnect the power cord from the AC wall outlet.
Table 1-2. Equipment Symbols
ATTENTION: Consult accompanying documents.
TYPE B EQUIPMENT. Type B equipment is
suitable for intentional external and internal
application to the patient, excluding direct cardiac
application.
TYPE BF EQUIPMENT. Type BF equipment is
suitable for intentional external and internal
application to the patient, excluding direct cardiac
application. Type BF equipment has an F-type
applied part.
TYPE CF EQUIPMENT. Type CF equipment is
suitable for intentional external and internal
application to the patient, including direct cardiac
application. Type CF equipment has an F-type
applied part.
ALTERNATING CURRENT (AC).
EQUIPOTENTIALITY.
ON/STANDBY: button toggles between full power
and standby.
!

1-10 170 Series Monitor Revision C
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Safety: Equipment Symbols
For your notes

Revision C 170 Series Monitor 2-1
2000947-004
Chapter 2
Introduction 2
This section lists the indications for use for monitors in the 170 Series as well as
provides an explanation of the different patient monitoring modalities.
This section summarizes the clinical applications of monitors in the 170 Series:
Indications for Use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
Monitoring Methods. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4
About Your Monitor. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5

2-2 170 Series Monitor Revision C
2000947-004
Introduction: Indications for Use
Indications for Use
Models 171 and 172
Models 171 and 172 Fetal Monitors are indicated for use in the monitoring of the
fetus during the antepartum period as well as throughout labor and delivery. Each
monitor also has an optional monitoring mode to detect fetal body movements.
Models 173 and 174
Models 173 and 174 Fetal Monitors are indicated for use in the monitoring of the
fetus throughout labor and delivery. Each monitor also has an optional monitoring
mode to detect fetal body movements.