Corometrics 145 User manual

Model 145
FETAL MONITOR OPERATOR'S MANUAL P/N 1133AA-08
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COROMETRICS
MEDICAL SYSTEMS, INC.

GUARANTEE
All equipment sold by Corometrics Medical Systems, Inc., is fully guaranteed as to
materials and workmanship for a period of 1 year. Corometrics 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 com-
pany. All correspondence covering the instrument should specify | the model and serial
numbers.
COROMETRICS MEDICAL SYSTEMS, INC.
61 Barnes Park Road North
Wallingford, Connecticut U.S.A. 06492
First Printing: 6/85
Revised 2/86
Revised 2/87
Revised 1/88
Revised 1/90
Revised 10/90
Revised 4/91
Revised 2/92
Reprinted 8/92
Revised 2/93
SERVICE DEPARTMENT
24-Hour Toll-Free Service
For Corometrics Factory Repair Service, Call 1-800-243-3952
In Connecticut, Call Collect 265-5631
/N CAUTION: Federal law restricts this device to sale by or on the order of a physician.
The Model 145 is not intended for home use.
Corometrics, the Corometrics Logo and SPECTRA 400 are registered trademarks of Corometrics
Medical Systems, Inc. All other products and company names are trademarks or registered trademarks
of their respective companies. © 1985, 1986, 1987, 1988, 1990, 1991, 1992, 1993 Corometrics Medical
Systems, Inc. All rights reserved. No part of this manual may be reproduced without the permission
of Corometrics Medical Systems, Inc.

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TABLE OF CONTENTS
UTERINE ACTIVITY RECORDING 一 TOCODYNAMOMETER ezine zione: 17
Equipment Needed urine 17
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Automatic Baseline “Zeroing” iii 18
SECTION 5
SET TIME/DATE 19
TO SET MINUTES enes sneen serene nere 人 19
TO SET HOURS. A иене tesen sr renser eee ns g anden ass see 20
TO SET DAY POV 20
KAIN IN 21
SECTION 6
MAINTENANCE 22
CLEANING THE FETALMONITOR sen rs nn rss n sg gense rere 22
CLEANING THE ULTRASOUND TRANSDUCER AND TOCOTRANSDUCER Ms 22
SECTION 7
TROUBLESHOOTING ...... 23
SECTION 8
SPECIFICATIONS 25
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¡AND ннитиииинининлинонлининининни 25
HeartRateScale..........................................eeee eee eeeereeasamem emare aemaeeeesemeneaesamaeaaraeese serme eanazen 25
Uterine Actvity Scale cirie cenci rivera vee nie nie rie re eee nen eeee nie ieri eee re iii iaia rie ieiniieviveeiiniaeeenionio 25
Chart DrYe n ENS s nere ns tee e ss seerne nende sse renser enes n rene 25
LINE VOLTAGE FREQUENCY AND POWER REQUIREMENTS essences 26
PHYSICAL CHARACTERISTICS ee kende ne rest esse snes ere nere testen nes sst a esse nee 26
SECTION 9
ACCESSORIES 27
Table of Contents « ii

FETAL MONITOR
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FEATURES
* Easy-to-use durable transducer connectors.
* Cleaner more accurate traces with fewer “dropouts” using ultrasound because of patented autocorrelation processing.
* Quiet, easy-to-load recorder with high-resolution dot matrix printhead. Prints out both trend curves and alphanumeric data
on one strip chart.
+ All functions controlled by pushbuttons—including audio volume, UA reference, time/date set, and paper advance.
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SECTION 1
INTRODUCTION
The Corometrics Model 145 Fetal Monitor is designed for fetal heart rate and maternal uterine contraction monitoring using
external methods. Simultaneous trends of fetal heart rate (FHR) and uterine activity (UA) are plotted continuously on the
built-in dual channel strip chart recorder. FHR is displayed continuously on the front-panel numeric display.
EXTERNAL MONITORING MODES
1. Continuous-Wave Doppler Ultrasound: A transducer placed on the abdomen is used to direct an ultrasonic beam
toward the fetal heart and to sense Doppler-shifted echoes created by moving cardiac structures. A patented
autocorrelation process is used to determine the timing of successive cardiac cycles.
2. Tocodynamometer: A tocotransducer placed on the maternal abdomen will record changes in abdominal tension. The
resulting tracings will reflect uterine contractions or fetal movement. The readings are recorded on the strip-chart paper in
a relative scale from 0 to 100.
Introduction * 1

SECTION 2
Z\ SAFETY INFORMATION
The DANGERS, WARNINGS and CAUTIONS that appear throughout this manual are not only preventative measures
designed to uphold the safety of both patient and operator, but also enhance equipment reliability. The definitions of DAN-
GER, WARNING and CAUTION in this manual comply with ANSI Z535.2, American National Standard for Environmental
and Facility Safety Signs, and ANSI Z535.4, Product Safety Signs and Labels, issued by the American National Standards
Institute.
VAN DANGER indicates an imminently hazardous situation which, if not avoided, will result in death or
serious injury.
/N WARNING indicates a potentially hazardous situation which, if not avoided, could result in death
or serious injury.
A CAUTION indicates a hazardous situation which, if not avoided, may result in minor or moderate
injury.
个 IMPORTANT indicates an emphasized note. It is something you should be particularly aware of;
something not readily apparent.
DEFINITION OF SYMBOLS
/\ __ This symbol complies with IEC 601.1, and is described in IEC publication 348. The symbol prescribes the following
information to the equipment user: ATTENTION, CONSULT ACCOMPANYING DOCUMENTS
IPX1 This symbol complies with IEC 601.1, and is described in IEC publication 529. The symbol prescribes the following
information to the equipment user: DRIP-PROOF
y This symbol complies with IEC 601.1, and is described in IEC publication 417-5021. The symbol prescribes the
following information to the equipment user: EQUIPOTENTIALITY
0 This symbol complies with IEC 601.1. The symbol indicates the power is OFF.
1 This symbol complies with IEC 601.1. The symbol indicates the power is ON.
GENERAL USE
/\, DANGER: Do not use this equipment in the presence of flammable anesthetics or inside an
oxygen tent. Such use would present an explosion hazard.
Read this manual before operating the Model 145 Fetal Monitor. Keep this manual available*for future reference and for the
orientation of new personnel.
Refer to the supplementary Guide to Fetal Heart Rate Monitoring for information concerning the limitations of internal and
external fetal heart rate monitoring techniques.
It is recommended that this equipment be plugged into the same AC power circuit accommodating other equipment being used
on a specific patient.
2. /À Safety Information

SECTION 2
The equipment should be kept clean, dry, and free of transducer gel and other substances.
Direct monitoring should be used only under aseptic conditions,
Do not operate the unit if it is damp or wet due to condensation or spills. Avoid moving the equipment from a cold environ-
ment to a warm humid location. If the equipment is brought inside from outdoors, and is cold to the touch or below room
temperature, allow the unit to stabilize at room temperature before operating.
Use only Corometrics approved transducers with the monitor.
SAFETY PRECAUTIONS
Domestic (U.S.A.) equipment models are manufactured to operate from a hospital grade three-wire 120 volt AC electrical
outlet. Corometrics recommends the use of dedicated AC power lines. The equipment can be modified to accept other AC
line voltages and outlet types; however, only those personnel designated by Corometrics Medical Systems, Inc. are authorized
to make such modifications.
ЛА WARNING: Do not use adaptors or make AC plug modifications. Such changes could defeat the
three-wire safety ground of the AC power cord and result in a dangerous electrical shock hazard to
both operator and patient.
LEAKAGE CURRENT
Corometrics Fetal Monitors are designed to comply with Underwriters Laboratory (UL 544), CSA, IEC, and TUV standards
for leakage current in patient connected medical equipment. The system’s ultrasound and tocotransducers are electrically
isolated, and leakage current is limited to a few microamperes even when full power line voltage is applied to these devices.
However, for maximum patient safety, a leakage test should be conducted following any repair or servicing of the monitor.
When conducting a leakage test, conform to the UL 544 standards or similar ones such as the AAMI Safe Current Limits
Standard on Leakage Current.
A Safety Information + 3

SECTION 3
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Volum
UA
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SECTION 3
CONTROLS AND INDICATORS
FRONT PANEL DISPLAYS
Heart Rate Display
Heart rate, in beats per minute will be displayed in this window.
Heartbeat
Indicator
|
À heart-shaped symbol flashes with each detected valid heartbeat.
FRONT PANEL CONTROLS
Power
Pushbutton that activates the monitor. When depressed, the monitor performs a self test and a green light next to the pushbut-
ton illuminates. The recorder remains active following completion of power up self test.
UA Reference
Pushbutton that sets the pressure level on the UA channel at 10 for the tocodynamometer. To activate, depress and hold for 1
second. The chart paper will automatically be annotated. If pressure falls below 0, automatic UA reference will occur and
new baseline reference is set at 0.
In the SET TIME/DATE mode the successive depression of the UA Reference pushbutton permits selection of the time or
date parameter to be changed. o
Volume
Two pushbuttons used to change the volume of sound emitted by the speaker. Depressing the button with the arrow pointing
down causes the volume to decrease. Depressing the button with the arrow pointing up causes the volume to increase. Vol-
ume has no effect on the processing used to compute heart rate.
In the SET TIME/DATE mode, the arrows are used to increase or decrease the time/date parameter selected by the UA
Reference pushbutton.
Mark
When depressed, this pushbutton causes an arrow shaped mark to be printed on the strip chart recorder paper. The Mark
pushbutton is typically used to show where a specific event occurred on the strip chart paper.
Paper Advance
When depressed, chart paper will advance at a speed of 25 cm/min. The recorder will not print during this time.
Record
When depressed, this pushbutton activates the recorder. Once the recorder is activated, depressing Record again turns it off.
A yellow light next to the Record pushbutton will be illuminated when the recorder is activated and turned off when the
recorder is deactivated.
Controls and Indicators + 5