Bard CritiCore 000002 User manual

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Bardº	CritiCore” Monitor
Service Manual
Model	Number: 000002

Issued: June 1, 1997

Pl 3336

[BANA	C.R. Bard, Inc.
Covington, GA 30014

Notice to Service Personnel

РР

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.

the

Monitor

fails

any

test

within

the checkout,

the CBET

will

referred

the

necessary

sections

this

manual

for

turther testing.

After repair

is made

(by

either Bard

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

Product Description	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.

Fluid Ouput

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

then

converted

into

container

volume.

Temperature Measurement

Bladder

Temperature

measured

temperature-sensing Foley catheter.

The

temperature sensor integral to the

disposable

catheter

is a “400-Series”

thermistor.

the

Bladder Temperature

changes,

does

the

resistance of

the

thermistor.

Sensitive

electronics

the Bard

CritiCore

Monitor

will detect

any

change

the

resistance

the

thermistor.

The resistive vaiue of

the

400-Series thermistor is converted into

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

Figure 1

Bard CritiCore Monitor Service Manual

Page 4

i	i
i
/ fee	ο i

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

permit

communications

between

computer or

patient

data

management

system

and the

CritiCore Monitor.

Note:

Consult

the

CCM

Operator's

Manual

for

details

all

CCM

functions.

With

the

CCM,

the user

may

configure the CritiCore

Monitor

transmit data

in one

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

Figure 2

mode.

Standard

mode—This

mode

designed

access

all

of the

information

-available from the Bard CritiCore

Monitor.

Flow

rate,

bladder

temperature

and

container

volume

data are

transmitted

in this

mode.

FlexPort”

mode—Allows

the

user

to set

communication

between the

Bard CritiCore Monitor and a

SpaceLabs

Medical

Patient Care

Management

System

(PCMS°)

Monitor.

Page

Bard CritiCore Monitor Service Manual

Figure 3—CritiCore Monitor with CCM Installed

Bard CritiCore Monitor Service Manual

Page 6

Functional

Chec t

Product

Identification

Self Test

The Functional Checkout procedure is designed to verify that the CritiCore

Monitor

functioning

properly

before

placed

into

service.

This

procedure

is available

the

Operator's

Manual,

which

supplied

with every

Monitor purchased. The Operator's Manual can also be purchased

separately

(see

the

Replacement

Parts

List

page

68).

The

Functional

Checkout

procedure is repeated here for

reference.

addition

the

Functional

Checkout

procedure

are

the

use

the

- T, Monitor test modes.

The

use

of these

test

modes

will

discussed

the

Additional

Testing

Modes

section

on page

12.

the

Bard CritiCore Monitor has been turned on

recently, be sure it has

been

turned

off

for

least

minutes

before

initiating the

self

test.

Hang

the Monitor from a stable levet bracket or set

on a

stable level

surface.

Clean

both the cavity that holds the collection container and the silicone

rubber

transducer cap located at the

bottom

of the

cavity.

Note:

Use a soft non-abrasive cloth dampened

with

warm

water and

mild

detergent,

alcohol

non-staining

disinfectant.

Open

the

rear

control

panel

door

reveal

the

rear

panel

switches

5. Setthe toggle and rotary switches as follows:

Set Format				Set Value	Test Switch
CLOCK			42 Hr.	Normal Operation	Normal Operation
TEMPERATURE			°F
BACKLIGHT			Of
FLOW	RATE	DISPLAY	Off
FLOW	RATE	ALARM	Disabled
TEMP.	ALARM		Disabled
BEEPER			Audible

Press the

ON/OFF

switch

the

membrane switch

turn the Monitor

ON.

The

Monitor

will emit

a short

“beep” and

perform

self test.

This

self test

should take about 4 seconds.

After the self test the Monitor will

automatically enter the normal operation mode.

Note:

the

Monitor

fails

the

self

test,

an error

code

“PPPP”

will

appear

the top

display.

Once the self test is completed and successful, the display should resemble Figure 4 with the exception of Not Level Indicator.

Note:	The	current time of day, time of the previously selected interval
	and	interval length may differ from Figure 4.

Bard CritiCore Monitor Service Manual

”

Раде?


Check Container Status	1.	Lift	the	display		assembly		and install	an empty disposable container into
		the	Monitors			front	cavity.		`
	2.	Lower		the	iid ensuring that it completely closes and traps the container
		within		the	Monitor.
	3.	Verify		that	the Check Container status indicator on the display is not lit,
		and	“O	ML"	appears		in the	Present	Interval Output display.

Temperature	1. Install	a temperature-sensing		Foley	catheter or	a temperature		calibration
	plug into the temperature jack on the				left side of the display		assembly.
	Note:	A precision	(0.1% or better)		decade box set to 1954.70 and
		connected	to a 3.6mm	mono	mini-phone plug may be			used
		instead of a	calibration	plug.	See page	59 for table	of	calibration

plug resistances.

2.Verify that the Check Probe status indicator disappears and that a temperature reading appears in the Bladder Temperature display. If

employing a temperature calibration plug the value should be 98.6°F + 02Ε.

3.Remove the temperature calibration plug or temperature-sensing Foley

catheter	and	verify that the Bladder Temperature window displays “--.-”
and that	the	Check Probe status indicator is lit.

System Clock

Tur

the

SET

VALUE

rotary switch on the rear

control

panel to

the

HOUR

position.

Verify that

the hour segment,

PM/AM

and

Set

Value

status

indicators

are

flashing.

Use

the

switches

the

membrane

switch

set the

system

clock to

the

correct

hour..

Turn

the

SET

VALUE

rotary switch on the rear

control

panel

the

MINUTE

position.

Verify

that the minute segment

and

Set

Value status

indicator

are

flashing.

Use

the

switches

the

membrane

switch

set the

minutes

of the

clock

the

correct time

day.

5.Return the SET VALUE rotary switch to the NORMAL OPERATION

position	and	verify	that the correct	time	appears on the display. Verify
that the	Set	Value	status indicator	is not	lit.

Intervals	1.	Turn	the	SET VALUE	rotary switch		to	the	INTERVAL position. Verify
		that	the	interval segment,		HA/MIN	and	Set	Value	status	indicators are
		flashing.
	2.	Use	the	Tl switches	onthe	membrane		switch to		display	the following

intervals: 5 MIN; 10 MIN, 15 MIN, 20 MIN; 30 MIN; 1HR; 2HR.

3. Set the	interval length to the preferred	interval and	return the SET
VALUE	rotary switch to the NORMAL	OPERATION	position.

Page 8

Bard CritiCore Monitor Service Manual

Patient Data Heset/Present

Interval Output/Container

Volume

Figure 5

Flow Rate

1. Filla disposable container with water (approximately 2100mi) and hang it so that it is higher than the Monitor.

Note:	A 60cc irrigation			syringe can be used to fill the collection
	container		or two	CritiCore disposable containers can be used for
	this	procedure.		These	containers	should	be	dedicated	for test
	use	only.
tf an irrigation syringe is				used,	proceed to	step 5,	otherwise continue			with
step	2.
2. Cut	the inlet	tubing	of a	second	disposable	container		one inch	below	the
urine sample		port	connector.

jnstall ihe modified second empty container into the Monitor.

tnser

the

plastic

molded

Control

Fit

connector at

the end of the drain

tube on the filled container into the soft plastic tubing on the second

container

extending

from

the

Monitor

(see Figure

5).

Press

the

ON/OFF

switch

tum

the

Monitor

ON.

Using

either the

irrigation

syringe

second

disposable container,

allow approximately 100ML of water

drain

into

the container in the

Monitor.

7. Wait approximately 10 seconds after the water has drained into the Monitor and the surface of the water is steady. The Monitor should read approximately “100 ML" in the Present Interval Output display.

8.Press the Container Volume switch. The display should read

approximately

“100

ml"

Verify that

the container volume disappears 30

seconds

after the container

volume

switch

pressed.

9. Press and

hold

the

Patient

Data Reset

switch

until

a short “beep”

heard.

10. Press the Container Volume switch

second

time.

The

Container

Volume

display

should

read

within

3mi of the value noted in Step 8 and

the Present

Interval

Output

display

should

read between

“0” and

“3 ML”.

1. Set the FLOW RATE toggle switch to the ON position.

2.Set the Interval length to “1 HR.”

Note:

at least

minutes

remain

the

current

hour,

proceed

with

step

less than

minutes

remain

in the current hour, wait

until

the

beginning

the

hour

before

proceeding

with

step 3.

Press

and

hold

the

Patient

Data

Reset

switch

until

a short

“beep”

heard.

Verify

that

“0

ML”

appears

the

Present Interval

Output

display

and

that

dashes

“----”

appear

in the

Flow Rate

display.

Allow

small

amount

water

drain

into

the

container

the

Monitor.

The

Present

Interval

Output

should

display a new

reading

within

seconds

after

the

water

flow has

stopped

and

the

water

surface

steady.

Bard CritiCore Monitor Service Manual

Page 9

Not Level Indicator

5. Repeat step 4 after each minute increment for 10 consecutive minutes,

adding only a small amount	of water	each	time.
After exactly 10 minutes the	current	Flow	Rate	display	should change
from dashes *---” to a value	that is 6	times	the	value in	the Present
Interval Output display.

~	With the Monitor ON, tilt	the	Monitor.
	Verify that the Not Level	status indicator		becomes lit.
3.	Return the Monitor to a	level	position and	verify that the Not Level
	indicator disappears.

Full Container Alarm	1.	Open	the	drain	clamp		on	the	upper container or use an irrigation syringe
		to fill	the	container		in	the	Monitor to 2050 mi of		water.
	2.	Verify	that the		Full	Container			status indicator flashes and an audible
		alarm	is	heard.	Note		that	the	BEEPER toggle	switch should be in the
		AUDIBLE		position.

3.Press the Container Volume switch and verify that the Container Volume

displayed is greater than 2000mi and is flashing.

4.Drain about 200ml from the Monitor container and verify that the Full

Container status indicator is not lit and the audible alarm stops beeping.

5.Press the. Container Volume switch and verify that the Container Volume

	displayed is	less	than	2000ml	and is	not flashing.
High Temperature Alarm	Before performing this procedure,				remove	any temperature probes or
	calibration plugs	and	reset	the Monitor.		'

1.Set the TEMP ALARM toggle switch to the ENABLED position and the BEEPER toggle switch to the AUDIBLE position.

Verify that the bell icon appears in the upper right corer of the Bladder

Temperature display.

Turn

the

SET

VALUE

rotary

switch

to the

HIGH

TEMP.

ALARM

position.

Verify

that the Set

Value

status

indicator

and 101.0°F flashes

the

display.

The

High

Alarm

and

Check

Probe

status indicators should also

be lit.

Note:

The

101.0°F

will

appear only if the temperature

alarm

default

limit

has not

been

reset

both

battery

packs

have

been

removed

for

an extended

period

time.

4. Use the Tl switches on the membrane switch to set the alarm limit to 98.4°F.

5.Turn the SET VALUE rotary switch to the NORMAL OPERATION

position.		Insert	a	98.6°F		calibration		plug. Verify that		the High Alarm
status	indicator		is	lit,	the	value in	the	Bladder	Temperature display is
98.6+	0.2	°F,:and		is	flashing and		the	audible	alarm is	beeping.

Page 10

Bard CritiCore Monitor Service Manual

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