Bard CritiCore 000002 User manual

Bardº
CritiCore”
Monitor
Service Manual
Model Number: 000002
Issued: June 1, 1997
Pl 3336
[BANA C.R. Bard, Inc.
Covington, GA 30014

Copyright
Notice to Service Personnel
РР
© 1997 C. R. Bard, inc. All rights reserved. Printed in the U.S.A.
Bard and CritiCore are registered trademarks of C.R. Bard, Inc.
or an affiliate.
This document and subject matter enclosed herein are proprietary
information to which C.R. Bard, Inc. retains the exclusive right of
dissemination, reproduction, manufacture, and sale. Any party accepting
this document agrees it shail not be duplicated in whole or in part, nor
disclosed to others without written consent of C.R. Bard, Inc.
U.S. Patent Nos. 4,448,207, 4,658,834. Other patents applied for.
This manual will help you troubleshoot and service the Bard CritiCore
Monitor. Use this manual in conjunction with the Bard CritiCore Monitor
Operators Manual.
Be sure to read these Manuais and become familiar with their contents
before attempting to disassemble or repair the Bard CritiCore Monitor.
Please consult product labels and inserts for any indications,
contraindications, hazards, warnings, cautions and directions for use.
The Bard CritiCore Monitor should be serviced by individuals with the
credentials of a Certified Biomedical Equipment Technician (CBET) or
equivalent only.
Caution: Federal (USA) law restricts this device to sale by or on the order
of physician.
Caution: - The Bard CritiCore Monitor contains static sensitive electronic
devices. Do not attempt to disassemble the Monitor without the
proper personal and work station grounding apparatus. Failure
to properly ground both your body and your work station could
result in damage to the Bard CritiCore Monitor.

Tabie of
Contents
NOS NY 2
Product Description
Communications Module.
Functional Checkout...
Troubleshooting information „13
Mechanical Testing and Repair Procedures......... mens 20
Bezel Enclosure . … 20
Bezel Top
Membrane Switch..
Display PCB
Temperature Jack
Liquid Crystal Display (LCD) ..
Front Enclosure Assembly
Attraction Plates and Magnets ..
Rear Enclosure
Battery Assembly... seen
Details of Electrical Operation.
Fluid Output Electronics
Temperature Measurement Electronics
Microcontroller Details
Display Electronics
Keyboard Electronics ..
Power Management sie
Electronic Testing and Calibration Procedures...
Power Modules
Transducer .
Phototransistor ..
Tilt Sensor
Temperature Electronics ....
Main PCB.
CritiCore Communications Module
Main PCB Component Map ......
Replacement Parts List.
Product Specifications ..
Measurement Ranges and Limits.
Instrument Specifications ...
index
CritiCore Monitor Schematics.…….... "eos 73
Bard CritiCore Monitor Service Manual Page 1

Introduction
Warranty Repairs
This manual provides the technical service information necessary to maintain
satisfactory operation of the Bard CritiCore Monitor. It is intended for use by
qualified personnel who are familiar with electro-mechanical devices, and in
particular, microprocessor-controlled patient monitors. Use this manual in
conjunction with the Bard CrítiCore Monitor Operator's Manual.
The
contents of this manual are summarized below.
1. Product Description—Description ot Bard CritiCore Monitor functions,
specifications, and product information.
2. Functional Checkout—Use this test procedure to verify correct
* operation of the Monitor. If the Monitor fails any test within the checkout,
the CBET will be referred to the necessary sections of this manual for
turther testing. After repair is made (by either Bard or the CBET), use
the Functional Checkout procedure to verify correct operation before
returning the Bard CritiCore Monitor for general use.
3. Troubleshooting Information—For monitors with an obvious or
predetermined failure, use this guide to identify the necessary tests to
isolate the problem.
4. Mechanical Testing and Repair Procedures—Use these procedures
to test, disassemble and reassemble the Monitor. After repair is made
(by either Bard or the CBET), use the Functional Checkout procedure to
verify correct operation before returning the Bard CritiCore Monitor for
general use,
5. Electronic Testing and Calibration Procedures—Use these
procedures to test and calibrate the electronics of the Monitor. After
repair is made, use the Functional Checkout procedure to verify correct
operation before returning the Bard CritiCore Monitor for general use.
6. Replacement Parts Kit List—Listing of available Bard replacement
parts.
Note: The Bard CritiCore Monitor contains many custom mechanical
and electronic components. To ensure safe and proper
operation of the Monitor, use only Bard replacement parts as
specified in the replacement parts kit list.
7. Product Specifications—Measurement ranges and limits along with
instrument specifications.
8. Schematics—Schematic diagrams for the CritiCore Monitor. Includes
control block diagrams and timing charts. ・
Bard provides a 90-day limited warranty on each Bard CritiCore Monitor. All
repairs on products under warranty must be performed at a Bard designated
repair facility. If there is any evidence of unauthorized service the customer
may forfeit any warranty provisions and may be billed for the repairs required
to return the Monitor to its original condition.
To obtain technical support, product information, and for placing orders
contact Bard Customer Service at 1-800-526-4455.
Bard CritiCore Monitor Service Manual Page 2

Non-Warranty Repairs
Contacting Bard
Monitors no longer under warranty may be repaired within the following
constraints:
1. Only components included in the replacement parts list are used to make
the repair.
2. No component has been removed from the Monitor unless that
component is specified in the replacement paris list.
3. Each repaired Bard CritiCore Monitor passes the Functional Checkout
(see page 7) before it is returned for general use.
Call Bard Customer Service Department (1-800-526-4455) to order
components necessary to complete a repair.
For orders and technical support, contact Bard Customer Service at
1-800-526-4455 between 8:30AM and 4:30PM eastern time, Monday
through Friday. When calling for technical support, please be prepared to
supply the following information:
* Your Name
* Hospital Name
«+ Address
* Telephone Number
+ Unit Model Number
* Unit serial number
* Description of the reported problem
+ Was ihe Monitor used on a patient when the problem occurred?
‚ Paiient status and type of intervention required (if applicable).
If you are advised to return the Monitor to a Bard-designated repair facility, a
Return Authorization Label or detailed mailing instructions, with the name
and address of the repair facility, will be supplied to you by your Bard
Customer Service Representative.
To return the Bard CritiCore Monitor for service:
1. Remove and dispose of 6 D-cell batteries.
2. Package the Monitor with adequate protection. if available, use the
original materials in which the Monitor was shipped.
8. Include a brief description of the problem as well as the name and phone
number of the person to be contacted for additional information.
Note: Apply a label with the return authorization number to the
shipping carton.
3. Ship the Monitor Transportation Prepaid to the location specified by
your Bard Customer Service Representative.
4. If requested, Bard will evaluate the Monitor and provide an estimate
before any repairs are made.
’ Bard CritiCore Monitor Service Manual Page 3

Figure 1
Product Description
Fluid Ouput
Temperature Measurement
The Bard CritiCore System consists of a fluid output and core temperature
monitor, a disposable collection system, and disposable temperature probes
(temperature-sensing Foley catheters).
Note: Consult the Operators Manual for details on all Bard CritiCore
Monitor functions. -
The Bard CritiCore Monitor electronically measures fluid output volume
utilizing ultrasound technology. During operation, the disposable container
rests within the Monitor and sits on top of a silicone rubber transducer cap.
Underneath the silicone rubber cap is the transducer element, which will
periodically transmit a controlled burst of ultrasonic energy up through the
container. Ultrasonic energy will travel through the fluid and reflect back
towards the transducer at the fluid/air interface. The transducer also
functions as receiver, detecting the return of the transmitted burst. The
microcontroller within the CritiCore Monitor will measure the time the energy
burst took to make the round-trip. This information is then converted into
container volume.
Bladder Temperature is measured by a temperature-sensing Foley catheter.
The temperature sensor integral to the disposable catheter is a “400-Series”
thermistor. As the Bladder Temperature changes, so does the resistance of
the thermistor. Sensitive electronics in the Bard CritiCore Monitor will detect
any change in the resistance of the thermistor. The resistive vaiue of the
400-Series thermistor is converted into a corresponding relative temperature
reading.
The CritiCore Monitor incorporates the following features:
+ | Present Interval Output Calculation
+ © Prior Interval Output Calculation
+ Cumulative Output Calculation
» Container Volume Measurement
* Flow Rate Calculation
Bard CritiCore Monitor Service Manual Page 4

i i
i
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Communications Module
The Bard CritiCore Monitor was designed to accommodate the Bard
CritiCore Communications Module (highlighted area in Figure 2). The
function of the CritiCore Communications Module (CCM) is to permit
communications between a computer or patient data management system
and the CritiCore Monitor.
Note: Consult the CCM Operator's Manual for details on all CCM
functions.
With the CCM, the user may configure the CritiCore Monitor to transmit data
in one of four modes (see Figure 3):
* 210 Emulation mode—Emulates the manner in which the Bard
Urotrack® Model 210 Monitor communicates its data. Flow rate and
container volume are transmitted in this mode.
+ 220 Emulation mode—Emulates the manner in which the Bard Urotrack
Model 220 and Urotrack Model 224 Monitors communicate their data.
Bladder temperature and container volume data are transmitted in this
mode.
* Standard mode—This mode is designed to access all of the information
-available from the Bard CritiCore Monitor. Flow rate, bladder
temperature and container volume data are transmitted in this mode.
Figure 2
+ FlexPort” mode—Allows the user to set up communication between the
Bard CritiCore Monitor and a SpaceLabs Medical Patient Care
Management System (PCMS°) Monitor. у
Page
5
Bard
CritiCore
Monitor
Service
Manual

Figure 3—CritiCore Monitor with CCM Installed
Bard CritiCore Monitor Service Manual Page 6