HEMOCHRON Jr. Signature Operators Manual

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INTENDED USE

The HEMOCHRON Jr. Signature Whole Blood Microcoagulation System is a battery-operated, hand-held

instrument that performs individual point-of-care coagulation tests on fresh or citrated whole blood. These

tests include: Activated Clotting Time (ACT+ and ACT-LR), Activated Partial Thromboplastin Time (APTT

and APTT Citrate), and Prothrombin Time (PT and PT Citrate). The system is intended to be used with test

cuvettes that are available from ITC.

Data management capabilities are included with the instrument. These capabilities include storage of up to

234 patient results and 85 quality control results, designation of quality control levels, tagging of test results

with date and time, entry of Patient ID and/or Operator ID, and printing of results.

HEMOCHRON ReportMaker™ software, provided separately, allows the user to connect a personal

computer to an instrument and perform various data management and data reporting functions.

For in vitro Diagnostic Use.

SUMMARY AND EXPLANATION

Events that lead to formation of a blood clot are simplified in coagulation theory into two interactive

coagulation cascades that are referred to as the intrinsic and the extrinsic pathways.

The clotting factors involved in these pathways are numbered I through V and VII through XIII. The intrinsic

pathway begins with the contact activation of factor XII and, through the interaction of several coagulation

factors, results in the conversion of soluble fibrinogen to insoluble fibrin strands. The extrinsic pathway is

initiated through the interaction of tissue factor with factor VII. Platelets, essential co-factors in this

reaction, provide the platelet phospholipid (PF3) surface on which coagulation reactions occur.

Heparin is used to maintain hemostasis during cardiac surgery and percutaneous coronary interventional

(PCI) procedures. However, its administration can pose significant risk to the patient since individual

patients can vary as much as twelve-fold in heparin sensitivity. Overdosing heparin can result in dangerous

bleeding, and underdosing heparin can lead to thrombosis. Therefore, monitoring heparin therapy is vital

in guarding against these undesirable side effects.

Activated Clotting Time (ACT+ and ACT-LR), Activated Partial Thromboplastin Time (APTT and APTT

Citrate), and Prothrombin Time (PT and PT Citrate) tests are general coagulation screening tests that are

used to measure the functionality of the blood coagulation cascade. The ACT test is the method of choice for

monitoring heparin therapy during cardiac surgery and PCI. Fresh whole blood is added to an activator

(Celite®, silica, kaolin, or glass particles), and then timed for the formation of a clot. The type of activator

used will affect the degree of prolongation of the ACT to a given heparin dose.

The HEMOCHRON Jr. ACT+ test uses a mixture of silica, kaolin, and phospholipids as an activator to create

a rapid and highly sensitive alternative to existing ACT tests. This test demonstrates linearity at heparin

concentrations ranging from 1.0 to 6.0 units of heparin per mL of blood, and it is not affected by high dose

aprotinin therapy.

The HEMOCHRON Jr. ACT-LR test uses a Celite activator due to its excellent heparin sensitivity. The test

demonstrates linearity at heparin concentrations up to 2.5 units of heparin per mL of blood. The test is not

intended for use with aprotinin therapy.

The HEMOCHRON Jr. APTT test measures the intrinsic coagulation pathway and involves all coagulation

factors except factors VII and III (tissue factor). The APTT test improves the PTT test through use of a

contact activating substance, which standardizes activation of Factor XII to provide a more precise and

sensitive assay for low level heparin monitoring. The HEMOCHRON Jr. APTT test is formulated to provide

optimal heparin sensitivity at heparin concentrations up to 1.5 units of heparin per mL of blood.

The HEMOCHRON Jr. APTT Citrate test performs the same measurement as the APTT test, using a citrated

whole blood sample.

The HEMOCHRON Jr. PT test measures the extrinsic coagulation pathway and is sensitive to coagulation

factors VII, X, V, II, and fibrinogen. PT results may be abnormal in patients with liver disease or Vitamin K

deficiency. The test is widely used to monitor oral anticoagulant therapy. The PT test is a unitized test

system utilizing a highly sensitive thromboplastin for improved specificity and sensitivity.

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The HEMOCHRON Jr. PT Citrate test performs the same measurement as the PT test, using a citrated whole

blood sample.

PRINCIPLES OF OPERATION

The HEMOCHRON Jr. Signature Whole Blood Microcoagulation System provides many features for ease of

use and reliability, including a patented clot detection system, a data storage module, interfaces for a

laboratory computer and/or printer, and a streamlined user-interface panel.

The system measures whole blood clotting times using HEMOCHRON Jr. disposable single-use cuvettes.

Each cuvette contains all of the reagents necessary for a specified test.

The operator inserts a cuvette for the test into the instrument and then enters information about the

sample (if desired). After the cuvette has warmed to 37 °C ±1.0 °C, the instrument beeps, signaling the

operator that a blood sample can be added to the cuvette and the test started.

The operator then places a drop of blood in the sample well of the cuvette and presses the START key. The

instrument measures the required volume of blood and automatically moves it into the cuvette test

channel, where it is mixed with reagents. The remainder of the blood sample, not needed for testing, is

automatically drawn out of the sample well and into an enclosed waste channel on the cuvette.

After mixing with the reagent, the sample is moved back and forth at a predetermined rate within the test

channel and monitored for clot formation. The test channel is maintained at 37 °C ±1.0 °C during the test.

The rate of movement of the sample is monitored by a series of LED optical detectors that are aligned with

the test channel. When the blood clots, the flow of the blood sample within the test channel is impeded,

reducing its rate of flow between the optical detectors.

This reduction in flow below a predetermined value signals to the instrument that a clot has formed. The

instrument also emits an audible beep when clot formation occurs, indicating the end of the test. An

internal timer measures the elapsed time between the start of the test and the clot formation. During the

test, the whole blood clotting time (in seconds) is displayed.

APTT and APTT Citrate results are displayed as plasma equivalent (PE) values, and PT and PT Citrate results

are displayed as the International Normalized Ratios (INR) and PE values. ACT+ and ACT-LR results are

displayed as Celite ACT equivalent time.

The results will remain on the display while the cuvette remains in the instrument.

The result can be automatically printed along with the time and date the test was run, the Patient ID, and

Operator ID, if entered. Quality control results can be tagged with the appropriate level (Normal or

Abnormal). Up to 234 patient test results and 85 quality control test results can be stored on the instrument

for later printing or downloading.

Definitions and Terms

The following acronyms and abbreviations are used in this manual, instrument screens, and printouts:

Activated Clotting Time

ACT

Activated Partial Thromboplastin Time

APTT

Database

DB

Electronic System Verification Cartridge

EQC

International Normalized Ratio

INR

Liquid Quality Control

LQC

Operator Identification Number

OID

Patient Identification Number

PID

Point of Care Coordinator

POCC

Prothrombin Time

PT

Quality Control

QC

Temperature Verification Cartridge

TQC

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DESCRIPTION

The HEMOCHRON Jr. Signature instrument is a hand-held device. It contains a test chamber which

warms a test cuvette to the required temperature, and it performs all operations to measure the clotting

time of a whole blood sample after it is placed in the test cuvette and the test is started by the operator.

Operator instructions are shown on the display panel, and the operator enters commands and

information using the keypad. When the test is completed, the results are shown on the display panel and

stored in system memory for printing or downloading.

display panel

keypad

test chamber

Keypad

The front panel contains a keypad with various action keys as well as a number pad. The operator uses the

keypad to select a command or enter information.

Action keys display a menu of commands according to the label on the key. For example, the PRINT key

displays printing commands. Number pad (or option) keys are used to enter numerals for IDs or

selection of commands.

number pad/

option keys

START key

action keys

Key

Purpose

START

Initiate a test after the test cuvette has reached 37 ±1.0 °C and the sample is

added.

ID

Enter a Patient ID or Operator ID.

QC

Specify that the QC sample being run is a normal (Level 1) or abnormal

(Level 2) control.

DATABASE

Display the number of patient or QC test results that are currently stored in the

instrument and the number of additional test results that can be stored.

Delete patient or QC records.

PRINT

Print results on an external printer for the last test result, patient database, or

quality control database.

0 through 9

Enter numeric information (e.g., a Patient ID, an Operator ID, a time, or a date).

CANCEL

Cancel an operation and return to the previous state.

ENTER

Accept a numeric entry (e.g., a Patient ID, an Operator ID, a time, or a date).

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Display Panel

The instrument communicates with the operator by means of the display panel. For example, ADD SAMPLE

and PRESS START are alternately displayed after a test cuvette reaches 37 ±1.0 °C:

ADD SAMPLE

The display is illuminated to enhance visibility in low light conditions. To conserve power during battery

operation, the display is not illuminated when the test well is empty or when a test is running. The display is

momentarily illuminated after a key is pressed or when results of a completed test are displayed. While a

test is running, the display can be momentarily illuminated by pressing the CANCEL or ENTER key or any

numeric key.

Menus

The action keys display the various commands for operating and configuring the system. Display a menu by

pressing the corresponding action key. For example, press the PRINT key to display the print menu:

1=LST 2=PAT 3=QC

Select the appropriate command by pressing the indicated numeric key. For example, to print the last

patient result, select the 1 key.

The commands displayed for each action key are summarized below:

Menu

Commands

ID

QC

DATA

BASE

(First)

(Successive, for QUERY)

(Successive, for ERASE)

PRINT

1=PATIENT

2=OPER

1=N

2=Abn

3=Pat

1=QUERY

2=ERASE

1=PATIENT

2=QC

Sure?

1=YES

2=NO

1=LST

2=PAT

3=QC

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Test Cuvettes

Tests are performed with single-use disposable HEMOCHRON Jr. test cuvettes. Each test cuvette contains a

label, a sample well, a test channel containing reagents, an enclosed waste reservoir, and optical

detection windows.

label

test channel

sample well

overflow area

detection

window

The cuvette label is human- and instrument-readable. The current test is automatically read by the

instrument and displayed for confirmation when the operator inserts the cuvette into the test chamber.

After the cuvette has warmed to 37 ±1.0 °C, ADD SAMPLE and PRESS START are displayed by the

instrument, alerting the operator to place a drop of blood in the sample well and begin the test by pressing

the START key.

Note: Refer to the package insert accompanying the HEMOCHRON Jr. test cuvettes for storage

and handling instructions.

Features

The HEMOCHRON Jr. Signature has a number of performance and convenience features. These are

summarized below:

• the system is portable for bedside use

• fresh whole blood or citrated whole blood can be used (assay dependent)

• only one drop of blood is required

• results are available in minutes

• results are displayed appropriately as whole blood, plasma equivalent, Celite equivalent seconds,

or INR

• test type is automatically read from the cuvette

• test results are automatically stamped with date and time

• results from 234 patient tests and 85 QC tests can be stored

• stored results can be printed and/or downloaded to a personal computer

• optional entry of Operator ID (OID) or Patient ID (PID)

• optional operator lockout

• instrument self checks are automatically performed

• Electronic Quality Control (EQC) cartridges are used to check instrument operation at two levels

• a Temperature Verification Cartridge (TQC) can be additionally used to check test chamber

temperature

• the display is illuminated for viewing in low light

• the user is alerted when the battery is low

• an optional printer can be connected

• Patient/QC test reports can be created using a personal computer and HEMOCHRON

ReportMaker software

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ATTENTION LABEL

An attention label on the rear of the HEMOCHRON Jr. Signature instrument alerts users to accompanying

documentation:

Before using the HEMOCHRON Jr. Signature instrument, it is essential that the contents of this Operator’s

Manual are read and understood by the operator.

Handle and open the container with care.

Operator Lockout

A single operator lockout code can be entered into the instrument by use of the HEMOCHRON Jr.

Commander Cuvette. If this feature is enabled, only operators with the assigned code can operate the

instrument. The code can be changed or disabled by the Supervisor. The operator code is stored in the

instrument database and is not printed with test results. See Setting Operator Lockout Code on page 13.

Prewarming

The cuvette is automatically prewarmed to 37 °C ±1.0 °C when it is placed in the test chamber. The

instrument will sound one short beep when prewarming is complete.

Automatic Interrupt

To ensure accurate test results, incubation of a cuvette stops automatically if START is not pressed within

five minutes after ADD SAMPLE and PRESS START are displayed.

Test Termination

A test terminates and operation of the test chamber automatically shuts off if clot formation is not detected

within a test-specific, preset maximum time.

Note: Results that are greater than the time noted in the package insert for a test are beyond

the sensitivity range of the test. They should be repeated immediately and, if confirmed,

reported as greater than the maximum sensitivity range.

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SPECIFICATIONS

Specifications for the HEMOCHRON Jr. Signature Whole Blood Microcoagulation System are listed below.

Dimensions and Weight

Depth

Width

Height

Weight

9 cm (3.5 in)

19 cm (7.5 in)

5 cm (2.0 in)

0.34 kg (0.7 lbs)

Performance

Test Precision

≤ 10% C.V.

Operation

Test Chamber

Timing Range

Incubation Temperature

Incubation Warm-Up Time

Full-Charge Operating Time

Battery Life

Battery Type

Throughput (Full Charge)

Operating Environment

1

0 second to 1,005 seconds

37 °C ±1.0 °C

30 seconds to 90 seconds

2 to 3 hours (minimum)

500 recharges

Nickel Cadmium

49 test cycles (at 150 sec per test)

17 test cycles (> 500 sec per test)

15 °C to 30 °C

AC/DC Power Module

USA/Canada

Input Power

Output Power

120 VAC, 60 Hz, 35 VA

9.0 VDC, 1.38 Amps maximum

Europe

Input Power

Output Power

230 VAC, 50 Hz, 30 VA

9.0 VDC, 1.15 Amps maximum

Japan

Input Power

Output Power

100 VAC, 50/60 Hz, 40 VA

9.0 VDC, 1.3 Amps maximum

Calibration

The Signature instrument is calibrated at the manufacturer facility to test and verify all functions. The

instrument is also self-calibrating, as all instrument functions are continuously monitored and verified by

the instrument software when a test is performed. The instrument does not require additional calibration

by the user.

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PREPARING THE INSTRUMENT

Unpacking and Inspection

1.

2.

Note: Inspect each component for damage when unpacking. If damage is observed, contact

your shipper or service representative immediately.

Remove any protective packaging that may be present around the instrument.

Examine the packaging material to be sure that the power supply and other components have

been removed. The materials that are provided are listed below.

Note: Do not discard the packaging material.

Materials Provided

Article

Quantity

HEMOCHRON Jr. Signature Microcoagulation Instrument

AC/DC Power Module (see note below)

USA/Canada (ITC Part No. HJ7353)

Europe (ITC Part No. HJ7436)

Japan (ITC Part No. HJ7409)

Electronic System Verification Cartridges (EQC)

Temperature Verification Cartridge (TQC)

Commander Cuvette

Operator’s Manual

Materials Required, But Not Provided

Article

1

1

2

1

1

1

Quantity

HEMOCHRON Jr. Test Cuvettes

HEMOCHRON Jr. Quality Control Products

As Needed

As Needed

Optional Materials

Article

Quantity

HEMOCHRON Jr. PKIT (Printer Kit)

HEMOCHRON Jr. PCKIT (Personal Computer Interface Cable)

HEMOCHRON Jr. CBL-SIG (Serial Printer Interface Cable)

HEMOCHRON ReportMaker 4.0 (Data Management Software)

1

1

1

1

Note: The AC/DC Power Module that is provided is the one that is appropriate for the country

to which the HEMOCHRON Jr. Signature instrument is being shipped. An AC power cord is not

provided with the European AC/DC Power Module (ITC Part No. HJ7436).

Charging the Battery

The battery of the system should be charged before the system is used.

1.

Plug the AC/DC Power Module into an electrical service outlet.

Caution: Ensure that the input voltage requirements of the AC/DC Power Module match the

voltage used in the laboratory.

2.

Connect the AC/DC Power Module cord to the power connector on the side of the instrument.

3.

Allow the battery to charge for at least 16 hours.

Note: The AC/DC Power Module should be disconnected from the instrument when charging

is completed.

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Battery Warning

The message CHARGE BATTERY is displayed intermittently when the remaining battery power is below a

predetermined level.

Setting the System Time and Date

The time and date a test is run is saved with the test results. The system time and date can be reset by the

operator.

1.

Press and hold down the CANCEL key.

2.

While holding down the CANCEL key, insert a cuvette or EQC/TQC.

3.

Release the CANCEL key when the PRESS START message is displayed.

4.

Press the START key to display the time:

TIME:

8:26

5.

Enter the new time using the numeric keys.

Note: Use the 24-hour format (i.e., enter 15:30 for 3:30 pm). The leading zero is required for

single digit times (i.e., enter 06:30 for 6:30 am).

6.

Press ENTER. The entry is saved, and the date is displayed:

7.

Type the new date using the numeric keys.

DATE:

6/01/2004

Note: The date format is MM/DD/YYYY). The leading zero is required for single digit dates

(i.e., enter 06/01/2004 for June 1, 2004).

8.

9.

Press ENTER. The entry is saved.

Remove the cuvette or cartridge to return to normal operation.

Connecting a Computer or Printer

An IBM-compatible laboratory computer or a serial printer (Seiko DPU-414 is recommended) can be used

with the system. The connector port for these devices is located at the side of the instrument.

connector port for

AC/DC power module

connector port for

computer or printer

To Connect a Printer:

1.

Obtain a printer interface cable.

Note: The printer interface cable is included with the optional HEMOCHRON Jr. PKIT (Printer

Kit) only. A separate CBL-SIG (Serial Printer Interface Cable) can be obtained from ITC, or a

cable can be prepared as outlined below. If a printer is connected, the serial printer

communication parameters must be set to 9600 baud with no parity, 8 data bits, and

1 stopbit using XON/XOFF 3-wire software protocol. For additional information on printer

configuration, contact ITC Technical Service at (800) 631-5945 or (732) 548-5700, or by

e-mail at techservices@itcmed.com.

2.

Connect one end of the cable to the connector port on the side of the instrument.

3.

Connect the other end of the printer cable to the printer.

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To Connect a Personal Computer:

1.

Obtain a computer interface cable.

Note: The computer interface cable is not included with the instrument. An optional PCKIT

(Personal Computer Interface Cable) can be obtained from ITC, or a cable can be prepared as

outlined below. Contact ITC Technical Service for instructions on setting up the personal

computer.

2.

Connect one end of the cable to the connector port on the side of the instrument.

3.

Connect the other end of the cable to an unused serial communication port on the computer.

Preparing a Printer or Computer Interface Cable

Cabling and connectors can be purchased locally at an electronics store. Use a 6-wire or 8-wire RJ45 to RJ45

modular straight through connecting cable (no longer than 25 feet) plus a RJ45 to DB9 adapter. Numbering

of the pins on the RJ45 connectors is shown below:

The cable configurations used for connecting a serial printer or a computer are shown below:

Connecting the instrument to the Seiko

DPU-414 printer with a DB9S connector

Connecting the instrument to any personal

computer with a DB9P connector

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STARTING THE INSTRUMENT

Start the instrument by inserting a cuvette:

Note: Insert the cuvette with the label facing up. Push the cuvette all the way in until it stops.

Allow cuvettes to reach room temperature (15 to 30 °C) before opening the pouch. This may

take up to 60 minutes. Consult the cuvette package insert for additional information

concerning cuvette storage and handling.

Insert Cuvette

"HEMOCHRON Jr"

is Displayed

Test Name is

Displayed

Operator

Lockout

Enabled?

Yes

Password Prompt is

Displayed

Password

Verified

No

Initialization Prompts

Displayed

Press START to

Run Test

When a test cuvette (eg. PT) is inserted to turn on the instrument, the following prompts are displayed:

1)

HEMOCHRON Jr

3)

Systems.….…..OK

2)

Test . . . . . . . . . . . PT

4)

Priming Pump

5)

WARMING……....

Note: The test name for the inserted cuvette is displayed after Test........ . Check the display

for fault messages while the cuvette is warming. Refer to the Troubleshooting section for the

procedure to resolve a fault message.

When the cuvette reaches 37 °C ±1.0 °C, the instrument will beep and alternately display:

ADD SAMPLE . . . . . .

and

. . . . . PRESS START

The sample can now be added. After the sample is added, press START to run the test.

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SETTING OPERATOR LOCKOUT CODE

The HEMOCHRON Jr. Commander Cuvette can be used to enable operator lockout. If operator lockout is

enabled, an operator must enter a code in order to use the instrument.

1.

2.

3.

Press and hold down the 1 key.

While holding down the 1 key, insert the HEMOCHRON Jr. Commander Cuvette into the

instrument.

Release the 1 key. A prompt is displayed to enter the code:

PWD=

4.

Type the code, using the numeric keys.

5.

Note: The code can contain up to twelve digits. The code cannot be 0 (zero).

Press ENTER. The entry is saved.

Note: The lockout code can be designated (or changed) at any time. The requirement to enter

a lockout code can be disabled by entering 0 (zero) in Step 4 or by pressing the ENTER key

without entering a number.

RUNNING A TEST

Samples are designated as patient samples by default. If a control is being run, the sample type must be

changed from patient sample to QC NORMAL or QC ABNORMAL. If a patient sample is being run, this

step is unnecessary.

Important: Failure to select QC NORMAL or QC ABNORMAL for a control sample will result

in storage of the control results as patient results in the patient database.

1.

Insert a test cuvette into the instrument.

2.

Press QC to display the QC menu:

1=N 2=Abn 3=PAT

3.

Press 1 to designate the sample as a normal control:

QC NORMAL

Or press 2 to designate the sample as an abnormal control:

QC ABNORMAL

Note: Once the QC menu is displayed, the sample type can be selected by pressing the

numeric key corresponding to the desired sample type. The sample type can be designated

either before or after the test is run, while the test cuvette is still inserted in the instrument.

Entry of QC levels cannot be performed while a test is running.

Note: To exit the QC menu, press and hold the CANCEL key for three seconds.

Note: If any error messages appear on the instrument screen, do not change any previous

patient/QC tags. Remove cuvette and repeat test using a new cuvette.

A numeric Patient ID (PID) and/or Operator ID (OID) can be entered for each test. The IDs will be stored

with the results for the test. Entry of a PID and/or OID is optional. When entering an optional PID or OID,

any ID (up to twelve digits) can be entered.

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To Enter an Optional Patient ID:

1.

Insert a test cuvette into the instrument.

2.

Press ID to display the ID menu:

1=PATIENT 2=OPER

3.

Press 1 to enter a numeric PID:

PID= . . . . . . . . . . . .

4.

5.

Type the PID using the numeric keys.

Press ENTER. The entry is confirmed as saved.

Note: The PID can be designated (or changed) before or after a test is run, while the cuvette is

in the instrument. If a PID is not entered for a test, the PID is stored as 0 (zero) in the database.

To Enter an Optional Operator ID:

1.

Insert a test cuvette into the instrument.

2.

Press ID to display the ID menu:

1=PATIENT 2=OPER

3.

Press 2 enter a numeric ID.

OID= . . . . . . . . . . . .

4.

5.

Type the OID using the numeric keys.

Press ENTER. The entry is confirmed as saved.

Note: The OID can be designated (or changed) before or after a test is run, while the cuvette is

in the instrument. If an OID is not entered for a test, the OID is stored as 0 (zero) in the

database.

Note: Entry of identification numbers cannot be performed while a test is running.

Specimen Collection

Collect blood specimens according to NCCLS document H21-2, entitled Collection, Transport and

Processing of Blood Specimens for Coagulation Testing and General Performance of Coagulation

Assays.

Important: Collect blood specimens in a manner that prevents contamination with tissue

thromboplastin, indwelling intravenous (I.V.) solutions, or alcohol cleansing solution. Discard

samples that are not properly collected or contain visible clots or debris.

Use a 23 gauge or larger needle if a syringe is used for blood collection. If a sample is expelled

through the same needle, do it slowly to prevent hemolysis.

Consult the cuvette package insert for additional information concerning specimen collection

and storage.

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Starting the Test

After initialization is completed the instrument beeps once, signaling the instrument is ready for the

sample. ADD SAMPLE and PRESS START are displayed, and the blood sample can be placed into the cuvette

and the test started.

Note: Older versions of the HEMOCHRON Jr. Signature instrument may not recognize newer

assays such as Citrate PT and Citrate APTT. In this case, the instrument will display COD=.

For information on adding new assays to the instrument, contact ITC Technical Service or your

ITC sales representative at (800) 631-5945 or (732) 548-5700.

Note: START TIMEOUT is displayed if the test is not started within five minutes. If this occurs,

repeat the test using a new cuvette.

1.

Place a drop of blood into the sample well of the cuvette:

lower wall

sample well

overflow area

2.

3.

4.

Note: Fill the sample well from the bottom up. Add enough blood so that the lower wall of the

center sample well is completely filled. If the meniscus of the blood sample extends above the

lower wall, push the excess blood into the overflow area. A transfer needle can be used to

transfer blood.

Press the START key. The elapsed time (in seconds) is displayed until the sample clots.

Note: SAMPLE TOO SMALL, SAMPLE TOO LARGE, or SAMPLE NOT SEEN is displayed if an

incorrect amount of sample was added. Repeat the test using a new cuvette.

When a clot is detected, the instrument beeps once. Final results of the test are calculated and

displayed.

Note: The whole blood clotting times are converted to plasma equivalent values (for APTT

and APTT Citrate) or plasma equivalent values and International Normalized Ratio (for PT

and PT Citrate). Press the START key to display the whole blood clotting times (for three

seconds). Celite equivalent values are displayed for ACT-LR and ACT+.

Remove the cuvette and discard it.

Note: Results are saved in the database and printed if a printer is connected. The date and

time of the test and the PID/OID (if entered) are printed with the test result.

Instrument Shutdown

If not in use, the instrument will automatically shutdown after five minutes.

QUALITY CONTROL

The Joint Commission on Accreditation of Healthcare Organizations (JCAHO) recommends that medical and

laboratory instrumentation be enrolled in a quality assurance program adequate in maintaining accurate

and reliable performance of the equipment. Complete records of such quality control must be kept.

Routine quality control testing should be part of a comprehensive quality assurance program. Quality

control testing of the HEMOCHRON Jr. Signature consists of the following operations:

• Testing system performance using Electronic System Verification Cartridges at two levels every

eight hours of operation.

• Testing cuvettes in accordance with the Package Insert for each assay using two levels of liquid

controls.

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Self-Check

The HEMOCHRON Jr. Signature instrument performs a “self-check” every time it is activated and a test is

performed. When a test is initiated by inserting a cuvette, system checks are automatically performed and

include:

• Verification of adequate battery power to complete a full test.

• Verification of the test type on the screen display to insure that the LEDs used for identifying the

test are functioning properly.

• Verification that the cuvette temperature is warmed to 37± 1.0 ºC. If this temperature is not

achieved or is exceeded, an appropriate error message will be displayed and testing is

prohibited.

• Verification that the sample is present and is of sufficient size to run test. This insures that the

pumps and sample sensing LEDs are functioning properly and that the cuvette is adequately

sealed. If these instrument and sample parameters are not appropriate, the test is terminated

and an error message displayed.

• Verification that the internal timers function correctly for each test. If the system timer and

assay timer disagree, a real-time clock error message is displayed and the test result is not

reported.

QC of Instrument Performance

The instrument should be tested at two levels once every eight hours of operation. Electronic quality control

cartridges (EQC Cartridges) can be used to provide a two-level electronic verification of instrument

performance, or liquid quality control products can be used.

QC Using EQC Cartridges:

1.

Insert the EQC Cartridge into the instrument. Enter an Operator ID (optional) for the test. The

instrument will display:

E-QC ……..Test

and

... WARMING

Note: System verification checks are performed during this process. If a fault is encountered,

the instrument will beep several times and display the error message. Refer to the

Troubleshooting section for the procedure to resolve an error message.

2.

After a short interval, the instrument will beep once and alternately display:

3.

Press the Start button on the EQC Cartridge. The instrument displays the elapsed time (in

seconds) until the EQC Cartridge simulates an endpoint.

When the EQC Cartridge simulates an endpoint, the instrument beeps twice. Final results of the

test are displayed and saved in the database when the cartridge is removed.

Note: If a printer is connected, the results are printed when the EQC Cartridge is removed.

Compare the displayed time with the acceptable range for the EQC Cartridge. Then remove the

EQC Cartridge.

Repeat the procedure using the other EQC Cartridge.

Press E-QC ……..

4.

5.

6.

and

16

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QC Using Liquid Quality Control Products:

1.

Obtain the liquid quality control products.

Note: HEMOCHRON Jr. Quality Controls are recommended. Refer to the package insert for the

liquid quality control products for storage and handling information.

2.

Select QC NORMAL (or QC ABNORMAL) and enter an Operator ID (optional) for the test.

Important: LQC results will be stored in the patient database if QC NORMAL or

QC ABNORMAL is not selected for the test.

3.

Obtain a cuvette for the test to be validated and insert it into the instrument.

4.

When ADD SAMPLE and PRESS START are displayed, add the appropriate liquid control sample

and run the test in the same manner as for a patient sample.

Note: If any error messages appear on the instrument screen, do not change any previous

patient/QC tags. Remove cuvette and repeat test using a new cuvette.

QC of Cuvettes

Cuvette validation is carried out using the appropriate HEMOCHRON Quality Control Product kit and the test

procedure provided.

Acceptable performance ranges for the HEMOCHRON Jr. cuvettes are included with each HEMOCHRON QC

product kit. The cause of out-of-range results is likely attributable to test technique, control material,

cuvette and/or the instrument.

Additional Method to Verify Instrument Temperature

A Quality Control temperature evaluation of the HEMOCHRON Jr. Signature instrument is performed

automatically each time a test is run (see the Self-Check section on page 16). However, for purposes of your

QC program, it may be preferred to additionally perform a temperature QC evaluation using the ITC

Temperature Verification Cartridge to verify that a temperature of 37 °C ±1.0 °C is maintained. The

Temperature Verification Cartridge can be obtained from ITC.

OPERATING PRECAUTIONS

The AC/DC Power Module should be plugged into a standard AC outlet to charge the instrument when it is

not in use.

DO NOT remove the AC/DC Power Module from the instrument by pulling on the cord. Although the AC/DC

Power Module can be left plugged into an AC outlet when the instrument is unplugged, it is recommended

that the AC/DC Power Module be unplugged from the AC outlet when it is not being used to charge the

instrument.

DO NOT use cuvettes that are past their marked expiration date or which have been improperly stored.

DO NOT force a cuvette into the instrument. If resistance to insertion is encountered, gently remove the

cuvette and examine the cuvette slot. Remove any obstruction before attempting further use of the

instrument (see Service and Maintenance on page 21).

DO NOT use excessive force in pressing the instrument keys.

DO NOT expose the instrument to extreme temperatures (above 37 °C).

DO NOT drop the instrument.

The HEMOCHRON Jr. Signature instrument should only be used by healthcare professionals trained and

certified in the use of the system and operated in accordance with facility policies and procedures.

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All biohazard safety guidelines pertaining to the handling and disposal of human blood should be strictly

adhered to when collecting and handing blood specimens and when operating the HEMOCHRON Jr.

Signature Microcoagulation instrument.

Used HEMOCHRON Jr. test cuvettes should be considered as potentially infectious. They should be handled

according to individual institutional policies concerning the disposal of potentially infectious materials.

HEMOCHRON Jr. Signature test results should always be scrutinized in light of a specific patient’s condition

or anticoagulant therapy. Any test results exhibiting inconsistency with the patient’s clinical status should

be repeated or supplemented with additional diagnostic tests. Samples with a hematocrit less than 20% or

greater than 55% are not recommended, due to an optical density outside the detection level of the

HEMOCHRON Jr. Signature Microcoagulation instrument.

CAUTION: Verify that any third-party connectivity software to be used is compatible with the

software version of the HEMOCHRON Signature instrument in use. Transferred data will be lost

if third-party connectivity software is used with non-compatible versions of HEMOCHRON

Signature software.

LIMITATIONS

Test results of the HEMOCHRON Jr. Signature Microcoagulation instrument are affected by poor technique

during blood collection and delivery to the sample well. The accuracy of the test is largely dependent upon

the quality of the blood specimen, including the blood sample collection and the transfer of blood to the test

cuvette. Refer to the individual assay package insert for specific limitations.

RESULTS MANAGEMENT

Up to 234 patient test results and 85 quality control test results can be stored in the instrument. In addition

to test results, the date and time of each test, PID, and OID (if entered) are also stored.

Note: PID and/or OID are stored as 0 (zero) if a value is not entered when the test is run. A

PID is not required for any QC test.

To Print Results:

1.

Insert a test cuvette or EQC/TQC into the instrument.

2.

Press PRINT to display the Print menu:

1=LST 2=PAT 3=QC

Then perform one of the following procedures:

To Print Results of the Last Test:

1.

Press 1. Results of the last test are printed.

To Print All Results in a Database:

1.

Press 2 to print all of the results in the patient database. Or, press 3 to print all of the results in

the QC database.

To Abort Printing of Results:

1.

Pressing CANCEL for three seconds will abort data transmission to the printer. Any data

previously transmitted will complete printing.

Note: Printing of large databases may be interrupted if the cuvette is removed during the

printing process.

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Other Database Operations

The total number of test results that are currently stored and the total number of additional test results that

can be stored can be displayed. Also, the results in either the patient database or the quality control

database can be erased to make room for additional test results.

CAUTION: Results from the oldest test are overwritten if a test is run when the database is full.

Therefore, it is important to periodically check, print, archive, and erase the database

contents.

To Perform Other Database Operations:

1.

Insert a test cuvette or EQC/TQC into the instrument.

2.

Press DATABASE to display the DATABASE menu:

1=QUERY 2=ERASE

Then perform one of the following procedures:

To Display Total Tests and Remaining Tests in the Database:

1.

Press 1. The Query menu is displayed:

1=Patient

2.

2=QC

Press 1. The total number of stored patient records and the number of records that can still be

added to the patient database are displayed:

41

Tests 193 Left

Or, press 2. The total number of stored QC records and the number of records that can still be

added to the QC database are displayed:

12

Tests 73 Left

To Delete All Results from a Database:

1.

Press 2. The Erase menu is displayed:

1=Patient

2.

3.

2=QC

Press 1 to erase the patient database. (Or, press 2 to erase the QC database.)

The instrument displays a prompt to confirm deletion of the database:

Sure? 1-YES 2-NO

4.

Press 1 to confirm deletion. Completed! is displayed for two seconds.

Note: Press 2 or CANCEL to cancel erasing of the database.

To Exit Database Operations:

1.

Press and hold CANCEL for two seconds.

Downloading QC/Patient Data to Your PC

For information on downloading QC/Patient data to your PC without Report Maker software, contact ITC

Technical Service for instructions.

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TROUBLESHOOTING

Instrument Error Messages

The error messages that may be displayed while operating the HEMOCHRON Jr. Signature instrument are

listed below. The probable cause and corrective action are shown for each message.

If needed, contact ITC Technical Service by phone at +1-732-548-5700, by FAX at +1-732-548-9824, or by

e-mail at techservice@itcmed.com.

Error Message

Cause

Corrective Action

CHARGE BATTERY

Battery power depleted below

predetermined level.

Connect to AC/DC Power

Module and charge battery for

16 hours.

Heater Too Cool

Incubator remained below 36 °C after

90 seconds of warming on external

power or for up to 150 seconds on

battery.

Repeat test, then charge

battery. If message persists,

contact ITC Technical Service.

Heater Too Hot

Incubator exceeded 38 °C for 2.5

seconds.

Repeat test with new cuvette. If

message persists, contact ITC

Technical Service.

Redo, then chrge

Heater too cool

Incubator remained below 37 °C after

90 seconds of warming on external

power or for up to 150 seconds on

battery.

Repeat test with new cuvette. If

message persists, contact ITC

Technical Service.

Detector blocked

Light path between LED and detectors

is blocked.

Repeat test with new cuvette. If

message persists, contact ITC

Technical Service.

Sample Not Seen

Sample has not reached front

detector in specified time period.

Repeat test with new cuvette. If

message persists, contact ITC

Technical Service.

Cuvette Removed

Cuvette was prematurely removed

from instrument while testing in

progress.

Repeat test with new cuvette.

Sample Too Large/

Sample Too Small

Excess or insufficient sample.

Repeat test with new cuvette.

Premature Sample

Sample was detected at front detector

before specified time period. May

occur if sample is added before

pump-priming sequence is complete.

Repeat test with new cuvette. If

message persists, contact ITC

Technical Service.

MEMORY FAULT

Malfunction in the computer's

memory.

Contact ITC Technical Service.

START timeout

START key was not pressed within 5

minutes after entering ready mode.

Remove cuvette and repeat test

with new cuvette.

Premature Clot

Sample has clotted prematurely, or

did not mix correctly in cuvette.

Bubbles may be present.

Repeat test with new cuvette. If

message persists, contact ITC

Technical Service.

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Error Message

Cause

Corrective Action

Bubbles, Repeat

Bubbles are present in the sample.

Remove cuvette and repeat test

with a new cuvette.

Invalid code

Invalid cuvette

Invalid cuvette code entered by

Operator.

Re-enter information.

Use new cuvette

Used cuvette was reinserted into

instrument. Occurs if cuvette

channel is blocked or if sample is

added before pump priming

sequence is complete.

Remove cuvette and repeat test

with new cuvette.

INR< 0.8

INR > 10.0

APTT < 20

Out of Range-Lo

Out of Range-Hi

Test result is outside clinical range.

Repeat test with new cuvette.

Pump Fault 2

Pump Fault 3

Sample has not reached or departed

the rear detector in the specified

time.

Repeat test with new cuvette. If

message persists, contact ITC

Technical Service.

SERVICE AND MAINTENANCE

Routine Maintenance

Inspect and clean the cuvette opening as required. Remove residual dried blood or other foreign matter

using water moistened cotton swabs.

Remove any residual water with dry cotton swabs. If a disinfectant is needed, use a 0.5% solution of sodium

hypochlorite or a 10% dilution of household bleach in water. Wipe instrument with a water-dampened cloth

to removal residual disinfectant from the plastic surfaces.

Apply solution to clean and disinfect areas contaminated with blood. DO NOT use solvents or strong

cleaning solutions as they may damage the instrument’s plastic components. Routine maintenance other

than cleaning normally is not required.

Service

The HEMOCHRON Jr. Signature instrument is almost completely self-monitoring.

It monitors internal circuitry and reports problems to the display screen automatically. Malfunctions are

indicated by error messages detailed in the Troubleshooting section.

Battery Care

To optimize battery life, it is recommended that the HEMOCHRON Jr. Signature instrument be run on its

battery during the day. It can be plugged into a standard AC outlet overnight to allow the batteries to

recharge. The life of the nickel-cadmium battery is optimized when the battery is exercised in this manner.

A fully charged battery will operate as defined in the Operation specifications section on page 8.

When the batteries are drained to the point that valid testing cannot be performed, the instrument will

display “CHARGE BATTERY” (see the Troubleshooting section). At this point, the instrument must be

plugged in for operation and recharging. Once plugged into an AC outlet, the instrument can be used

immediately.

Instrument Disposal

If disposal is necessary, follow local regulations for disposal of electronic devices.

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SAFETY STANDARDS

The HEMOCHRON Jr. Signature instrument complies with the following safety standard requirements and

directives:

CSA C22.2. 601.1.

Medical Electrical Equipment – General Requirements for Safety

EN 60601-1 /

IEC 60601-1

Medical Electrical Equipment – General Requirements for Safety

EN 60601-1-2 /

IEC 60601-1-2/

UL 60601-1

Medical Electrical Equipment – Part 1-2 – General Requirements for

Safety – Collateral Standard: Electromagnetic Compatibility –

Requirements and Tests

EN 61000-3-2

Electromagnetic Compatibility – Limits – Limits for Harmonic Current

Emissions

EN 61000-3-3

Electromagnetic Compatibility – Limits – Limitation of Voltage Changes,

Voltage Fluctuations and Flicker in Public Low-voltage Supply Systems

EN 55011

Industrial, Scientific and Medical (ISM) Radio Frequency Equipment –

Radio Disturbance Characteristics – Limits and Methods of Measurement

EN 61326

Electrical Equipment for Measurement, Control and Laboratory Use –

EMC Requirements

Directives: 89/336/EEC and as amended by 91/263/EEC, 92/31/EEC, 93/68/EEC, 98/13/EC, and

98/79/EC.

All the relevant documentation is kept on file at ITC in Edison, NJ.

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INDEX

action keys.........................................................4

attention label ...................................................7

automatic shutdown .........................................7

battery

care ............................................................21

charging .......................................................9

life 8

low warning................................................10

type...............................................................8

cable configurations........................................11

charging battery.................................................9

connecting

computer .............................................10, 11

printer........................................................10

cuvette ...............................................................6

cuvette validation ............................................17

definitions .........................................................3

description

features ........................................................6

overview .......................................................4

display panel .....................................................5

erase patient database.....................................19

erase QC database ...........................................19

error messages................................................20

features .............................................................6

intended use......................................................2

interface cable.................................................11

keypad ...............................................................4

limitations .......................................................18

liquid controls .................................................17

maintenance ...................................................21

materials

optional ........................................................9

provided .......................................................9

required .......................................................9

menus ...............................................................5

operating precautions .....................................17

overview.............................................................2

precautions .....................................................17

Quality Control

electronic ...................................................16

instrument performance ...........................16

liquid....................................................16, 17

results

management..............................................18

running a test..................................................13

service .............................................................21

setting

time............................................................10

shutdown

automatic.....................................................7

specifications

AC/DC Power Module ...................................8

dimensions ..................................................8

performance ................................................8

weight...........................................................8

specimen collection ........................................14

starting a test...................................................15

starting instrument .........................................12

terms.................................................................3

test

running ......................................................13

starting .......................................................15

test cuvettes.......................................................6

test termination.................................................7

time and date ..................................................10

troubleshooting ...............................................20

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HJ5632

10/04