Operator

& Service Manual

A.T.S.™ 1200
TOURNIQUET SYSTEM
REF 60-1200-101-00
 LIMITED ONE YEAR WARRANTY (U.S.A.)

SCOPE OF WARRANTY
Zimmer, Inc. warrants the Product (A.T.S. 1200 Tourniquet System) for one year from date of purchase. During the warranty
period, Zimmer will repair or replace, at its option, any product which is defective in materials or workmanship or which fails to
meet the published specification for that model. This Limited Warranty is made only to the original purchaser of the product and
is non-transferable. The remedies described in this Limited Warranty are the exclusive remedies for breach of warranty. THIS
WARRANTY SHALL NOT APPLY TO ANY PRODUCT WHICH HAS BEEN ALTERED OR MODIFIED IN ANY
WAY, OR WHICH HAS BEEN SUBJECTED TO MISUSE OR ABUSE.

DISCLAIMER OF IMPLIED WARRANTIES

The forgoing of Express Limited Warranty is given in lieu of any and all other express or implied warranties. ZIMMER
MAKES NO OTHER WARRANTIES INCLUDING THE IMPLIED WARRANTIES OF MERCHANTABILITY
OR FITNESS FOR A PARTICULAR PURPOSE.

LIMITATION OF REMEDIES
In no case shall Zimmer, Inc. be liable for any special, incidental, or consequential damages whether based on breach of
warranty or other legal theory whether or not such damages are foreseeable. Some states do not allow limitations on warranties
or on remedies for breach in certain transactions. In such states, the limits in this paragraph and the preceding paragraph
do not apply.

WARRANTY CLAIMS
In the event of a warranty claim within the warranty period please take the following steps:

1. Notify Customer Service Department, Zimmer Orthopaedic Surgical Products, at 1-800-348-2759 or contact your local
Zimmer representative. Please provide details about the nature of the problem and include the product serial number.
Upon receipt of this information, Zimmer will provide a date for service or a return shipping authorization.

2. Upon receipt of the shipping authorization, forward the equipment, freight prepaid, to the location specified in the
shipping authorization.

Your compliance with these steps will help assure that you receive prompt warranty service for your product.

WARRANTY (OUTSIDE U.S.A.)

Please contact your local Zimmer Representative for warranty information.

Unit Serial Number _______________________

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 ENGLISH

TABLE
OF
CONTENTS
A.T.S. 1200 TOURNIQUET SYSTEM

SECTION TITLE PAGE

1.0 GENERAL INFORMATION

1.1 Specifications ............................................................................................................. 3
1.2 Intended Use .............................................................................................................. 5
1.3 Contraindications ....................................................................................................... 5
1.4 Precautions in Use ..................................................................................................... 5
1.5 Adverse Effects .......................................................................................................... 6

2.0 INSTALLATION AND OPERATING INSTRUCTIONS

2.1 Initial Inspection ........................................................................................................ 7
2.2 Controls, Indicators, and Connectors ........................................................................ 7
2.3 Initial Setup................................................................................................................ 8
2.4 Functional and Calibration Check ............................................................................. 8
2.5 Pressure and Time Defaults ....................................................................................... 9
2.6 Single Cuff Operation................................................................................................ 10
2.7 Dual Cuff Operation .................................................................................................. 11
2.8 Bier Block Cuff Operation (IVRA) ........................................................................... 11
2.9 Alarm Conditions....................................................................................................... 11

3.0 MAINTENANCE
3.1 General Maintenance Information............................................................................. 15
3.2 Access to Parts ........................................................................................................... 15
3.3 Periodic Maintenance ................................................................................................ 15
3.4 Calibration.................................................................................................................. 15
3.5 Leak Testing............................................................................................................... 17
3.6 Battery Voltage and Battery Service.......................................................................... 17
3.7 Unscheduled Maintenance......................................................................................... 18
3.8 Troubleshooting Guide .............................................................................................. 18
3.9 Expected Test Point Readings ................................................................................... 18
3.10 Replacement Parts...................................................................................................... 22
3.11 Storage ....................................................................................................................... 22
3.12 Warnings, Cautions, and Symbol Definitions............................................................ 29

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 TABLES
2.1 Alarm Conditions....................................................................................................... 13
3.1 Board Plug Designators ............................................................................................. 15
3.2 Troubleshooting ......................................................................................................... 19
3.3 Expected Test Point Readings ................................................................................... 21
3.4 Parts List .................................................................................................................... 22

ILLUSTRATIONS
1 A.T.S. 1200 Tourniquet Overview – front ................................................................ 23
2 A.T.S. 1200 Tourniquet Overview – rear ................................................................. 24
3 Calibration Setup Overview....................................................................................... 25
4 Disassembly – front case opening ............................................................................. 26
5 Disassembly – front case removal ............................................................................. 26
6 Disassembly – disconnecting wiring ......................................................................... 26
7 Disassembly – rear case removal............................................................................... 26
8 Disassembly – overview ............................................................................................ 27
9 Electronic circuit layout............................................................................................. 28
10 Labels......................................................................................................................... 30

SCHEMATICS
Sheet 1 Control Board .......................................................................................... ENCLOSED
Sheet 2 Control Board .......................................................................................... ENCLOSED

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 GENERAL INFORMATION
SECTION 1.0
A.T.S. 1200 TOURNIQUET SYSTEM

1.1 SPECIFICATIONS MAIN CUFF INFLATE/DEFLATE Buttons:

Mains Line Voltage Range:
100–240 V ~ (AC), 50/60 Hz. Auto switching
Line Current:
670 mA RMS @ 120 V ~ (AC)
Input Power:
53 W typical
Controls inflation or deflation of the Main cuff. Orange
Battery Type:
Rechargeable, 12 VDC sealed lead acid, LED bar indicates inflation of the main cuff or pressure
2.3 A hours alarm in the main cuff when flashing in conjunction with
Battery Discharge Time: the PRESSURE display.
Unit will operate on battery power for 45 minutes
minimum with a fully charged battery. SECOND CUFF INFLATE/DEFLATE Buttons:
Battery Recharge Time:
24 hours
Unit should be plugged in 24 hours before initial use
Power Cord:
Type SJT, AWG 16, 14 ft. (4.27 m)
Power Plug:
Hospital grade, 3 prong straight blade, 15 A Controls inflation or deflation of the Second cuff. Orange
Line Protection: LED indicator bar indicates inflation of the second cuff or
2 time delayed 1.0 A 250 V fuses pressure alarm in the second cuff when flashing in
conjunction with the PRESSURE display.
CONTROLS:
ON/STANDBY Button: ALARM SILENCE Button:

Turns the unit on/sets unit to STANDBY. Allows operator to manually silence most alarms for
30 seconds.
PRESSURE Button:
AC MAINS Indicator Light (Green LED):

Used in conjunction with the ROTARY knob to adjust the

pressure set point. Can also be pressed to verify the set point.
Indicates unit is operating on AC Mains. This is the normal
TIME Button: means of operation (battery power is only intended for
emergency power loss or patient transport).

Used in conjunction with the ROTARY knob to adjust

the time alarm set point. Can also be pressed to verify the
set point.
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A.T.S. 1200 TOURNIQUET SYSTEM
BATTERY Indicator Light (Orange LED): SIZE:
Height:
12.50 in. (31.75 cm)
Width:
10.25 in. (26 cm)
Depth:
Indicates unit is operating on backup battery. This indicator 8.1 in. (20.6 cm) (including clamp and ports)
always flashes. Weight:
8.0 lbs. (3.63 kg)
Cuff Pressure Range:
50-475 mm Hg, 5 mm Hg increments DISPLAYS:
Pressure Accuracy: PRESSURE Display:
±5 mm Hg (50–475 mm Hg) Red 14-segment light emitting diodes (LED). Displays
Pressure Regulation: pressure setting, sensed cuff pressure, and hardware failure
±6 mm Hg of set point conditions/other messages.
(10 second average under non-transient conditions without TIME Display:
external leaks) Red 14-segment light emitting diodes (LED)
Maximum Pressure: Displays time alarm set point, elapsed time, and hardware
475 mm Hg (Normal Operation) failure conditions/other messages.
Time Alarm Set Range:
5–240 minutes; 5 minute increments
Timer Accuracy:
0.25 % of elapsed time
Internal Diagnostics:
Program, memory, watchdog timer, transducer calibration,
improper valve actuation.

UL 60601-1 Classification:
Type of protection against electric shock: Class I or Internally Powered Equipment*

Degree of protection against electric shock: Type BF applied part

Classification according to the degree of IPX0

protection against ingress of water:

Mode of operation: Continuous operation

*When the unit is operating on backup battery, the type of protection against electric shock changes to internally powered equipment.

This device is not suitable for use in the presence of flammable anesthetic or gases.

Emissions/Immunity:

The A.T.S. 1200 Tourniquet System complies with EMC criteria set forth in IEC 601-1-2.

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 A.T.S. 1200 TOURNIQUET SYSTEM
1.2 INTENDED USE ◆ The tourniquet cuff must never be punctured; therefore
The A.T.S. 1200 Tourniquet System is intended to be used by towel clips used near the system must be handled with
qualified medical professionals to temporarily occlude blood special care. Cuffs with inner rubber bladders must be
flow in a patient’s extremities during surgical procedures on completely enclosed by the outer envelope to preclude
those extremities. Tourniquets have been found useful in ballooning and possible rupture of the bladder. Cleaning and
producing a bloodless operation field in surgical procedures assembly instructions of the cuff manufacturer should be
involving the extremities including: followed carefully.
◆ Do not use an elastic bandage for exsanguination in
Reduction of certain fractures cases where this will cause bacteria, exotoxins, or malignant
Kirschner wire removal cells to spread to the general circulation, or where it could
Tumor and cyst excisions dislodge thromboemboli that may have formed in the vessels.
Subcutaneous fasciotomy ◆ The tourniquet cuff must be applied in the proper
Nerve injuries location on the limb, for a “safe” period of time, and within
Tendon repair an appropriate pressure range. Never apply a tourniquet over
Bone grafts the area of the peroneal nerve or over the knee or ankle.
Total wrist joint replacement Do not readjust an already inflated cuff by rotating it because
Replacement of joints in the fingers this produces shearing forces which may damage the
Knee joint replacements underlying tissue.
Amputations ◆ Prolonged ischemia may lead to temporary or permanent
Replantations damage to tissues, blood vessels, and nerves. Tourniquet
paralysis may result from excessive pressure. Insufficient
WARNING: Do not use tourniquet cuffs to control the distal pressure may result in passive congestion of the limb with
flow of CO2 or any other gases used as a distention media. possible irreversible functional loss. Prolonged tourniquet
Tourniquet cuffs have not been evaluated for safety or time can also produce changes in the coagulability of the
effectiveness in controlling gas flow beyond the surgical site blood with increased clotting time.
during arthroscopic insufflation procedures. Possible effects ◆ Inflation should be done rapidly to occlude arteries and
of using a tourniquet cuff in this manner include serious veins as near simultaneously as possible.
subcutaneous emphysema proximal to the cuff. ◆ Careful and complete exsanguination reportedly
prolongs pain free tourniquet time and improves the quality
1.3 CONTRAINDICATIONS of Intravenous Regional Anesthesia (Bier Block anesthesia).
The medical literature lists the following as possible In the presence of infection and painful fractures, after the
contraindications. However, in every case, the final decision patient has been in a cast, and in amputations because of
whether to use a tourniquet rests with the attending malignant tumors, exsanguination before tourniquet
physician. application may be done without the use of an elastic
Open fractures of the leg bandage by elevating the limb for 3 to 5 minutes.
Post-traumatic lengthy hand reconstruction ◆ In case of failure, the tourniquet cuff must be fully
Severe crushing injuries deflated and the limb exsanguinated again before reinflation.
Elbow surgery (where there is excess swelling) Reinflation over blood-filled vasculature may lead to
Severe hypertension intravascular thrombosis.
Skin grafts in which all bleeding points must be ◆ Tourniquet users must be familiar with the inflation-
readily distinguished deflation sequence when using a dual-cuff tourniquet or two
Compromised vascular circulation, e.g., peripheral tourniquet cuffs together for IVRA (Bier Block anesthesia),
artery disease so that the wrong tourniquet will not be released accidentally.
Diabetes mellitus ◆ Test for hemoglobin type and level before using a
The presence of sickle cell disease is a relative tourniquet on patients with sickle-cell anemia. When the
contraindication. (See PRECAUTIONS IN USE.) tourniquet is used for these patients, the limb should be
A tourniquet should also be avoided in patients who are carefully exsanguinated and the PO2 and pH should be
undergoing secondary or delayed procedures after closely monitored.
immobilization. ◆ Select the proper cuff size to allow for an overlap of
about 3 to 6 in. (7.6 cm – 15 cm). Too much overlap may
1.4 PRECAUTIONS IN USE cause cuff rolling and telescoping, and may lead to undesired
◆ The tourniquet system must be kept well calibrated and pressure distribution on the limb. The skin under the
in operable condition. Accessories should be checked tourniquet cuff must be protected from mechanical injury by
regularly for leaks and other defects. smooth, wrinkle-free application of the cuff. If the tourniquet
cuff is applied over any material that may shed loose fibers

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A.T.S. 1200 TOURNIQUET SYSTEM
(such as Webril) the fibers may become embedded in the
contact closures and reduce their effectiveness. As an under
padding, a section of stockinette may be used. The deflated
cuff and any underlying bandage or protective sleeve
should be completely removed as soon as tourniquet
pressure is released. After the cuff has been fully deflated
and removed from the patient, the unit can be set to
STANDBY. Even the slightest impedance of venous return
may lead to congestion and pooling of blood in the
operative field.
◆ If skin preparations are used preoperatively, they should
not be allowed to flow and collect under the cuff where they
may cause chemical burns.
◆ Whenever the tourniquet cuff pressure is released, the
wound should be protected from blood surging back by
applying pressure dressings and, if necessary, elevating the
limb. Transient pain upon tourniquet pressure release can be
lessened by elevation of the limb. If full color does not return
within 3 to 4 minutes after release, the limb should be placed
in a position slightly below body level.
◆ Whenever IVRA Bier Block anesthesia is used, it is
recommended that the tourniquet remain inflated for at least
20 minutes from the time of injection.
◆ WARNING: Cuffs will not deflate in STANDBY
mode. Ensure cuffs are fully deflated before setting the
unit to STANDBY.

1.5 ADVERSE EFFECTS

A dull aching pain (tourniquet pain) may develop throughout
the limb following use.
Pathophysiologic changes due to pressure, hypoxia,
hypercarbia, and acidosis of the tissues occur and become
significant after about 1.5 hours of tourniquet use. Symptoms
of tourniquet paralysis are motor paralysis and loss of sense
of touch, pressure, and proprioceptive responses.
Intraoperative bleeding may be caused:
1. By the slight impeding effect exerted by an
unpressurized cuff (and its padding, if used), which
prevents venous return at the beginning of the operation;
2. By blood remaining in the limb because of insufficient
exsanguination;
3. By inadequate tourniquet pressure (between systolic and
diastolic blood pressure of the patient), or slow inflation
and deflation, all of which allow arterial blood to enter
while preventing venous return;
4. By blood entering through the nutrient vessels of the
long bones, such as the humerus.

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 INSTALLATION
AND OPERATING
INSTRUCTIONS
SECTION 2.0
A.T.S. 1200 TOURNIQUET SYSTEM

2.1 INITIAL INSPECTION 7. SECOND CUFF INFLATE button

Unpack the A.T.S. 1200 Tourniquet upon receipt and inspect Inflation of the Second cuff is initiated by depressing the
the unit for any obvious damage that may have occurred blue INFLATE button.
during shipment. We recommend that this inspection be 8. SECOND CUFF DEFLATE button
performed by a qualified biomedical engineer or other person Deflation of the Second cuff is initiated by depressing
thoroughly familiar with electronic medical devices. If the the blue DEFLATE button. For greater safety, the
unit is damaged, notify the carrier and your Zimmer DEFLATE button has a delay and, therefore, must be
representative immediately. If the initial inspection results held for approximately 2 seconds before the unit will
are satisfactory, a functional and calibration check should be allow a cuff to deflate.
performed after a 24-hour charge. The attention label 9. ALARM SILENCE button
covering the ON/STANDBY button can be removed and The ALARM SILENCE button will silence most audible
discarded after the 24-hour charge. alarms for 30 seconds after the button is pressed. When
an alarm sounds because of an internal hardware
2.2 CONTROLS, INDICATORS, malfunction, the alarm cannot be silenced.
AND CONNECTORS
NOTE: The alarm messages will continue to flash on
Refer to Figure 1 and 2 in the back of the manual for the the displays until the alarm condition is corrected.
locations of the unit’s controls, indicators, and connectors.
1. ON/STANDBY Button 10. AC MAINS indicator light
Turns the unit ON or sets the unit to STANDBY. This The AC MAINS indicator light indicates that the unit is
button will not set the unit to STANDBY when the cuff plugged in and is being powered by AC Mains. This is
pressure is at a non-zero value. Ensure both cuffs are the normal means of operation (battery power is only
fully deflated and have been removed from the intended for emergency power loss or patient transport).
patient prior to setting the unit to STANDBY. 11. BATTERY indicator light
NOTE: During STANDBY, the power to the A.T.S. The BATTERY indicator light indicates that the unit
1200 instrument and all instrument functions is operating on backup battery. The light will flash
(i.e. inflation, deflation, etc.) are OFF but power continuously while the unit is running on battery
continues to supply the battery charging circuitry backup power.
anytime ~ (AC) power (Mains) is present. 12. PRESSURE display
2. ROTARY knob During normal operation with no buttons being pressed,
Changes the value of set time or default time and set the PRESSURE display will show the monitored cuff(s)
pressure or default. Turn knob clockwise to increase the pressure. At other times, depending on alarm conditions
value; turn knob counterclockwise to decrease the value. and buttons pressed, this display may communicate
3. PRESSURE button other information such as alarm messages, set pressure,
Press to verify or modify set pressure. or default set pressure.
4. TIME button 13. TIME display
Press to verify or modify set time. During normal operation with no buttons being pressed,
5. MAIN CUFF INFLATE button the TIME display will show elapsed inflation time of the
Inflation of the Main cuff is initiated by depressing the first cuff that was inflated in 1-minute increments. At
red INFLATE button. other times, depending on alarm conditions and buttons
6. MAIN CUFF DEFLATE button pressed, this display may communicate other information
Deflation of the Main cuff is initiated by depressing the such as alarm messages, set time, or default set time.
red DEFLATE button. For greater safety, the DEFLATE
button has a delay and, therefore, must be held for NOTE: The elapsed inflation time can be “zeroed” at
approximately 2 seconds before the unit will allow a cuff any point in the procedure by pressing the TIME and
to deflate. PRESSURE buttons simultaneously.
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A.T.S. 1200 TOURNIQUET SYSTEM
14. CUFF connector ports c)The unit will display “SELF” “TEST” for an instant.
The CUFF connectors are the ports used to connect the The unit is self-testing specific system hardware and
unit to the cuff hoses. Please note that the MAIN CUFF software.
is the red port and the SECOND CUFF is the blue port. d) “CAL” is displayed in the PRESSURE displays
The A.T.S. 1200 Tourniquet is designed and tested for during the calibration check.
use with Zimmer single port cuffs. Zimmer does not e) “0” is displayed in the PRESSURE and TIME
recommend the use of any cuff other than Zimmer single display after the startup routing is complete. If a
port cuffs. Do not use dual port cuffs with the A.T.S. number other than zero is displayed in the
1200 Tourniquet. PRESSURE display, the unit should be calibrated.
15. CUFF indicators 3. Test the PRESSURE set point system as follows:
The CUFF indicators illuminate steady when stable cuff a) Press the PRESSURE button.
pressure is sensed in the cuff. The CUFF indicators will b) The PRESSURE display should read “*250” (the
also flash during inflation or to indicate an alarm default set point) for 2 seconds.
condition in the respective cuff. c) Within the 2-second time frame, rotate the ROTARY
16. Pole clamp knob to change the pressure set point (clockwise to
The pole clamp is used to mount the unit on an I.V. pole. increase, counter-clockwise to decrease). The set
pressure can be maintained between 50 mm Hg and
NOTE: Do not hang articles on the tourniquet pole that 475 mm Hg in increments of 5 mm Hg.
are not related to tourniquet use. For stability reasons, do 4. Test the TIME set point system as follows:
not use an I.V. pole with a base less than 27.27 inches a) Press the TIME button.
(70 cm) in diameter. b) The main TIME display should read “*60” (the
default set point) for 2 seconds.
2.3 INITIAL SETUP c) Within the 2-second time frame, rotate the ROTARY
Inspect to ensure the correct fuse drawer with the knob to change the time set point (clockwise to
appropriately rated fuses is present. The 100–120 V unit increase, counter-clockwise to decrease). The set
uses the gray fuse drawer with 1.0 A time delay fuses. The time can be maintained between 5 and 240 minutes
220–240 V unit uses the black fuse drawer to 1.0 A time in increments of 5 minutes.
delay fuses. The power cord should be plugged into the
power entry module on the back of the unit. The unit should NOTE: Anytime an asterisk (*) appears in the left
be plugged into ~ (AC) power (Mains) for 24 hours before display digit, the data being displayed is the set point.
initial use. During shipping and storage, the unit’s Set pressure and time will revert to the default pressure
battery could become weak. Always charge 24 hours and time when the unit is set to STANDBY.
before any initial use including any calibration checking
procedures, initial checks, tests and any institutional 5. Calibration Check
performed biomedical evaluations.
NOTE: During the power-up diagnostic self-test
2.4 FUNCTIONAL AND CALIBRATION CHECK described above, the unit will test calibration. Should an
out of calibration condition be detected, the unit will
The unit shall produce the results explained in the following
display either “CAL” “FAIL”, “CALM” “FAIL” or
steps exactly as indicated. Failure to do so indicates that a
“CAL2” “FAIL” in the PRESSURE and TIME displays.
problem may exist and the device is not to be used until
Even though the unit performs this check at every
necessary repair or calibration has been made.
power-up, the following quantitative check is
recommended at regular intervals.
1. Connect the power plug of the unit to a properly
polarized and grounded power source with voltage and
a) Verify the unit is in the STANDBY mode.
frequency characteristics compatible with the
b) Enter the calibration mode by pressing and holding
specifications listed in Section 1.1. Observe that the
the Main cuff Inflate and Deflate buttons while
green AC MAINS indicator light turns on.
powering the unit ON. The unit will enter the
2. Turn the unit ON by pressing the ON/STANDBY button
calibration mode when the Pressure and Time
and observe the following:
display momentarily displays “CAL” “MODE”.
a) A “0*0*”/“*0*0” sequence appears on the
After the “CAL” “MODE” is displayed, the unit
PRESSURE and TIME displays followed by the text
will display the software revision level. The
“ATS” “1200” on the respective display.
software revision level can be recorded for future
b) The unit emits tones when “0*0*”/“*0*0” and text
reference.
is displayed.
NOTE: The calibration is only being checked in this section.
For complete calibration, see Maintenance Section 3.0.
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 A.T.S. 1200 TOURNIQUET SYSTEM
c) Connect a calibrated pressure meter, with a minimum o) Remove the calibration hose from the unit. The
range of 0 to 500 mm Hg, to the calibration hose. PRESSURE display should now read 0 mmHg.
The calibrated meter will be used as the pressure
standard (see Figure 3 in the back of the manual). NOTE: If any reading is off by more than 5 mm Hg
d) Connect a pressure source capable of supplying during the calibration check, the unit must be calibrated.
500 mm Hg of pressure. See CALIBRATION in MAINTENANCE, Section 3.
e) Insert the calibration hose connector into the Main
Cuff port on the unit (red port). p) At this point, use the SECOND CUFF DEFLATE
button to back the pressure level down to the point
NOTE: The unit will be displaying “0” in the Pressure where the Time display is alternating between
display and alternating “CAL” and “0” in the Time “CAL” and “0”. Exit the calibration check by
display. During the calibration check, the unit will simply setting the unit to STANDBY.
attempt to deflate any applied pressure if the adjustment
point displayed is set to zero. This will result in an 6. Low Pressure Alarm Check
inaccurate calibration check. Press the MAIN CUFF Connect a cuff and standard length hose to the Main cuff
INFLATE button once to change the adjustment point to port. Inflate the cuff to 250 mm Hg. Create a leak in the
50 mm Hg in order to close the deflate valve. cuff by partially detaching the hose from the unit while
a cuff is inflated. Make the leak large enough that the
f) Apply 50 mm Hg of pressure to the cuff port. The pressure drops more than 15 mm Hg below set point.
PRESSURE display should read 50±5 mm Hg when Observe:
compared to the calibrated meter. a) A 1.5 second delay is instituted to reduce
g) Increase the pressure to 250 mm Hg. The nuisance alarms.
PRESSURE display should read 250±5 mm Hg. b) The PRESSURE display flashes between “LO-P”
h) Increase the pressure to 475 mm Hg. The and the monitored pressure (if the leak is large
PRESSURE display should read 475±5 mm Hg. enough, the PRESSURE display may show
i) Remove the calibration hose setup from the unit. “LEAK”).
The PRESSURE display should now read 0 mm Hg. c) An audible tone will sound and the red ALARM
j) At this point, use the MAIN CUFF DEFLATE indicator will illuminate announcing the
button to back the pressure level down to the point alarm condition.
where the Time display is alternating between d) Stop the leak and observe the monitored pressure
“CAL” and “0”. Then, press the MAIN CUFF returns to regulated state, the audible tone stops, the
INFLATE and the MAIN CUFF DEFLATE buttons red ALARM indicator turns OFF, and the alarm
simultaneously to exit the Main cuff calibration message is no longer displayed.
check and to enter the Second cuff calibration
check. Repeat this procedure with the Second cuff port.
k) Connect the previously used setup to the Second
Cuff port (blue port). 2.5 PRESSURE AND TIME DEFAULTS
To modify the default pressure or time limits, follow the
NOTE: The unit will be displaying “0” in the Pressure following steps.
display and alternating “CAL” and “0” in the Time 1. Default Pressure
display. During the calibration check, the unit will a) The Default Pressure is selected by depressing and
attempt to deflate any applied pressure if the adjustment holding the PRESSURE button for at least 2
point displayed is set to zero. This will result in an seconds. When the default mode is entered, the
inaccurate calibration check. Press the SECOND CUFF audible alarm beeps once and a “D” is displayed in
INFLATE button once to change the adjustment point to the first position on the PRESSURE display.
50 mm Hg in order to close the deflate valve. b) The Default Pressure is modified via the ROTARY
knob and can be set between 50 and 475 mm Hg in
l) Apply 50 mmHg of pressure to the cuff port. The increments of 5 mm Hg.
PRESSURE display should read 50±5 mmHg when c) After the correct value is selected, it is saved by
compared to the calibrated meter. momentarily depressing the PRESSURE button or it
m) Increase the pressure to 250 mmHg. The will be saved automatically in 3 seconds.
PRESSURE display should read 250±5 mmHg. d) The new default value will be displayed for
n) Increase the pressure to 475 mmHg. The 1.5 seconds and the audible alarm will beep once
PRESSURE display should read 475±5 mmHg. signifying a new default value has been stored.
e) The new default pressure will be stored and remains

9
A.T.S. 1200 TOURNIQUET SYSTEM
the default every time the machine is turned on. 4. Prepare the patient in accordance with your established
procedures and cuff manufacturer’s instructions. The
2. Default Time Limit precautions of Section 1 and the following are offered as
a) The Default Time Limit is selected by pressing and a guide to assist in this process.
holding the TIME button for at least 2 seconds. In most cases a tourniquet cuff should be applied to
When the default mode is entered the audible alarm the widest part of the limb to allow as much tissue as
beeps and a “D” is displayed in the first position on possible to lie between the cuff and any nerves or
the TIME display. vascular structures susceptible to damage. The optimum
b) The Default Time Limit is modified via the positions are the upper arm and the proximal third of the
ROTARY knob and can be set between 5 and 240 thigh. In certain cases of fore-foot surgery, the
minutes in increments of 5 minutes. tourniquet cuff can be applied around the calf or to the
c) After the correct value is selected, it is saved by area proximal to the malleoli. For emergency surgery of
momentarily depressing the TIME button or it will the hand, a sufficiently small tourniquet can be fitted
be saved automatically in 3 seconds. around the wrist.
d) The new default value will be displayed for 1.5 Apply a leak-free tourniquet cuff smoothly without
seconds and the audible alarm will beep once wrinkles. The valve port and hose connections should be
signifying a new default value has been stored. placed so that the hose will not be kinked when the limb
The new time limit default will be stored and remains is positioned for surgery. The viability of the skin and
the default every time the machine is turned on. deeper tissues should be established prior to
exsanguination of the limb and tourniquet inflation.
NOTE: The elapsed inflation time can be “zeroed” at Exsanguinate the limb by elevating it for a minimum of
any point in the procedure by pressing the TIME and 2 minutes and wrapping it, distal to proximal, using an
PRESSURE buttons simultaneously. Esmarch, Martin, or elastic bandage. The bandage
should come up approximately to 1 in. (2.5 cm) from the
2.6 SINGLE CUFF OPERATION edge of the tourniquet cuff. The elastic bandage is
1. Press the ON/STANDBY button to turn the unit on. The removed following inflation of the cuff. If regional
unit will execute a self-check diagnostic test as anesthesia is being used, the anesthetic agent or nerve
described in Section 2.4 of this manual. Successful block is then administered. The tourniquet time depends
completion of the self-check indicates the unit is ready greatly on the patient’s anatomy, age, and absence of
for use. vascular disease. The surgeon will determine:
CAUTION: If a connected cuff is pressurized to
50 mm Hg or more during power-up, the A.T.S. 1200 1) When the tourniquet is to be inflated;
Tourniquet will declare it an abnormal start-up sequence. 2) What pressure is applied;
It will assume that a surgical procedure is in process, 3) How long the tourniquet is applied;
and will adopt the pressure sensed in the cuff as the new 4) Whether to allow for intermittent aeration of
set point. It will automatically go into the regulate mode tissue by deflating the cuff for 10 to 15
on the cuff. To alert the operator of this condition, the minutes;
unit will sound a tone and display a “CUFF” “INFL” 5) To what point in the operation the tourniquet
alarm. The operator should immediately check the should be released.
pressure set point and readjust to the proper set point if
necessary. The alarm will be cleared as soon as the set In many operating rooms, it is customary to
point is examined (PRESSURE button pressed). prominently note the time of inflation, and to warn the
2. Connect a single port cuff to the unit at the Main cuff surgeon after a certain time has elapsed. This will allow
connector (red port). the surgeon to assess the need for further tourniquet
3. The default settings for cuff pressure and time limit are time.
retrieved from the nonvolatile memory during power up. There is a general agreement that, for reasonably
For each patient, tourniquet pressure required to healthy adults, 2 hours should not be exceeded without
occlude blood flow to operative site should be set to the releasing the tourniquet to allow the underlying tissue to
minimum effective pressure. The minimum effective breathe. During this time, the limb should be elevated to
pressure should be determined by factors such as: about 60 degrees, and steady pressure should be applied
whether the cuff is to be applied to an upper or lower to the incision with sterile dressings.
limb; whether the limb is normal, hypertrophied, or 5. The cuff is inflated by pressing the red MAIN CUFF
obese; the patient’s preoperative systolic pressure; and INFLATE button. The unit will pressurize the Main cuff
the maximum anticipated rise in systolic pressure during to the set pressure and start the time limit (inflation)
the procedure. clock. The MAIN CUFF INFLATION indicator will

10
 A.T.S. 1200 TOURNIQUET SYSTEM
illuminate to indicate cuff activation. If the unit cannot inflated cuff so as to allow the operator to view the
pressurize the cuff to within 15 mm Hg of the set point progress of inflation.
in less than 13 seconds, a leak alarm will be sounded. 6. When both cuffs are inflated, the display indicates an
See Section 2.8 for information about possible alarm average of the pressures sensed in the two cuffs. If one
conditions. Once the cuff is inflated, the TIME display cuff has a sustained leak or a significant leak (as
will track elapsed inflation time. described in Section 2.9.1) a pressure alarm may
6. At the end of the procedure, deflate the cuff by pressing be sounded.
the MAIN CUFF DEFLATE button for minimum of 7. When deflating a cuff with the other cuff remaining
2 seconds. The MAIN CUFF bar indicator will go out, inflated, the display shows the pressure in the cuff that
the PRESSURE display will show the deflation of the remains inflated.
cuff, and the time limit (inflation) clock will stop. 8. In order to deflate the final cuff, a sequence must be
followed to prevent accidental deflation:
NOTE: The elapsed inflation time can be “zeroed” at a) Press and hold the DEFLATE button on the cuff
any point in the procedure by pressing the TIME and to be deflated.
PRESSURE buttons simultaneously. b) When the “CUFF” “DEFL” alarm is active,
release the DEFLATE button.
7. Remove the tourniquet cuff and any underlying c) Within 5 seconds of the alarm discontinuing,
bandages or protective sleeve immediately following press the DEFLATE button once again.
final deflation. The time of tourniquet cuff removal d) The cuff will deflate. This safety feature is
should be noted, and the circulation of the limb should particularly useful when using the unit for Bier
be checked. Block Cuff Operation (IVRA).
8. After the cuff has been removed, disconnect the cuff
from the A.T.S. 1200 Tourniquet. 2.8 BIER BLOCK CUFF OPERATION (IVRA)
9. During normal use, the A.T.S. 1200 Tourniquet should Review Sections 2.6 and 2.7, SINGLE CUFF OPERATION
not be set to STANDBY if pressure is present in either and DUAL CUFF OPERATION.
cuff. Once the cuff has been properly deflated, removed 1. The following are suggested cuff connections:
from the patient and disconnected from the A.T.S. 1200 a) The proximal cuff connected to the red Main cuff
Tourniquet, the unit can be set to STANDBY. port using the white/red cuff tubing;
b) The distal cuff connected to the blue Second cuff
2.7 DUAL CUFF OPERATION
port using the white/blue cuff tubing.
2. Follow the cuff inflation sequence adopted by your
Operation of the unit is identical to Single Cuff operation
institution or requested by the surgeon.
(see Section 2.6) except for the following points:
3. Deflation of a cuff is not possible while the other
1. Both single port cuffs are connected at the bottom of the
is inflating.
unit (Reminder: Main cuff is the red port, Second cuff is
4. When requested, the first can be deflated simply by
the blue port).
pressing and holding the DEFLATE button for a
2. The MAIN CUFF and SECOND CUFF indicator lights
minimum of 2 seconds.
will illuminate to indicate cuff activation (i.e. if both
5. In order to deflate the final cuff, a sequence must be
cuff indicator lights are illuminated then both cuffs
followed to prevent accidental deflation:
are inflated).
a) Press and hold the DEFLATE button on the cuff
3. During a pressure alarm a flashing CUFF indicator light
to be deflated.
warns which cuff(s) to check.
b) When the “CUFF” “DEFL” alarm is active,
4. Deflation of one cuff will not be permitted while the
release the DEFLATE button.
other cuff is inflating.
c) Within 5 seconds of the alarm discontinuing,
5. When inflating a second cuff with the other cuff already
press the DEFLATE button once again.
inflated, the unit will continuously check the original
d) The cuff will deflate.
cuff to ensure that the pressure is within allowable
6. For Bier Block procedures follow the cuff inflation/
limits. The unit will stop its inflation and maintain the
deflation sequence adapted by your institution or
original cuff to within 10 mm Hg of the set point before
requested by the surgeon.
returning to the inflating cuff. This ensures that at least
one cuff maintains occlusion at all times. If there is a
significant leak in the original cuff, this feature could
2.9 ALARM CONDITIONS
cause the inflation rate of the subsequent cuff to be There are a number of conditions for which the A.T.S. 1200
longer and perhaps even cause the 30-second inflation Tourniquet will produce a visual and/or audible alarm. Those
alarm to sound. The display shows the pressure in the conditions, indications and appropriate actions are shown in
Table 2.1. The appropriate actions indicated are based on the
11
A.T.S. 1200 TOURNIQUET SYSTEM
most probable causes and should only be used as a guide.
Other causes of alarm conditions may indicate a need for
other actions.
In addition to the conditions shown in Table 2.1, it is
conceivable that a malfunction could occur for which the
indications are unintelligible and unpredictable. In this
situation, it is likely that the valves will be disabled causing
the system to hold cuff pressure. It is also likely that a tone
will sound under these conditions.
Most audible alarm tones may be silenced for
30 seconds by depressing the ALARM SILENCE button. At
the end of the silenced period, tones will be reenabled.
Depressing the ALARM SILENCE button will cause the
alarm tone to be silenced again.
To minimize nuisance alarms (i.e. “HI-P”, “LO-P”) that
can be caused by vigorous movement of the patient’s limbs,
a 1.5-second delay has been designed into the alarm
actuation.
Under certain conditions, such as when a FAIL indication
appears in the TIME display or the information that appears in
the TIME and PRESSURE displays is unintelligible, the
operator should conclude that a hardware failure has occurred,
rendering the unit unusable. The appropriate action is to set
the unit to STANDBY by pressing the ON/STANDBY button.
Since this removes power from the internal instrument
circuitry, all instrument functions, commands to the valves
and pump will cease. This will cause the cuff to hold
pressure (in the absence of leaks). Clamp the cuff line with
hemostats and replace the tourniquet unit.

2.9.1 PRESSURE ALARMS

A Pressure alarm will occur when the pressure in a cuff is
more than 15 mm Hg from the pressure set point. It is also
possible for a cuff to have a leak that is substantial but which
the unit can compensate for by continual pumping. This type
of leak could be due to a pin hole in a cuff bladder, or a
loose pneumatic fitting. This type of leak could progress into
a total failure of a cuff to hold pressure. To alert the operator
that a substantial leak is present, a pressure alarm is declared
when this type of leak is continuously present for more than
9 seconds. If a pressure alarm occurs, and the displayed
pressure is not more than 15 mm Hg from the set point, then
this type of substantial leak has been detected and all cuffs
and pneumatic fittings should be checked for leaks.

12
 A.T.S. 1200 TOURNIQUET SYSTEM
Table 2.1 Alarm Conditions
CONDITION PRESSURE TIME APPROPRIATE ACTION/REMARKS
DISPLAY DISPLAY
CUFF PRESSURE LOW LO-P normal This condition is generally caused by a leak in the
The pressure in the cuff system, or a hose occlusion. All lines and
is 15 mm Hg below set point. connections should be checked.
CUFF PRESSURE HIGH HI-P normal Normally caused by transient conditions such as
The pressure in the cuff is patient movement, controller overshoot, or hose
15 mm Hg above set point. occlusion. This condition, for an extended period,
would indicate a hardware failure and the
A.T.S. 1200 unit should be replaced.
CUFF SIDE LEAK LEAK normal A substantial leak has been present for more than
A leak has been present for 7 seconds. All lines and connections should be
at least 7 seconds. checked.
INFLATION TIME IN normal TIME UP Surgeon should be warned of time up condition.
EXCESS OF SETTING Only on the direction of the surgeon, time should
The cuff has been inflated be set to new value.
beyond the set time limit.
CUFF INFLATION ON CUFF INFL The system assumes that a procedure is in progress
POWER UP and adopts the sensed pressure as the new set point.
Cuff pressurized to 50 mm Hg The operator should immediately check the set value
or greater at power up. to determine if it needs resetting.
CUFF NOT DEFLATED normal CUFF Check for kinks in hose. If alarm persists,
Pressure in deflated cuff is NOT disconnect hose from cuff. If attempting to set the
a non-zero value. DEFL unit to STANDBY, ensure that cuff is fully deflated.
LINE OCCLUSION LINE OCCL normal Check for hose kinks or other defects.
An occlusion is present in the
cuff tubing.
LOW BATTERY VOLTAGE normal BAT LOW Unit needs to be plugged in.
Low battery voltage. PLUG IN
BATTERY FAILURE BATT FAIL Plug unit in and cycle the ON/STANDBY Button.
Battery voltage is too low
to ensure proper operation.
CALIBRATION OUT OF SPEC CALM FAIL CALM (CALIBRATION MAIN) indicates the
The transducer calibration or CAL2 main cuff transducer circuitry is out of calibration.
is out of specification. CAL2 (CALIBRATION SECOND) indicates the
second cuff transducer circuitry is out of calibration.
Pressure in error by at least 6 mm Hg will cause
these failures. Calibrate the unit.
CALIBRATION OUT OF SPEC CAL FAIL Indicates general calibration fail. Calibrate the unit.
The transducer calibration
is out of specification.
AMPLIFIER FAILURE AMP FAIL Cycle the ON/STANDBY Button. If problem
Amplifier is out of range. persists, service the unit.
MATH FAILURE MATH FAIL Cycle the ON/STANDBY Button. If problem
Result of math operation persists, service the unit.
was out of range.

13
A.T.S. 1200 TOURNIQUET SYSTEM

ROM FAILURE ROM FAIL Cycle the ON/STANDBY Button. If problem .

Microprocessor failed a ROM persists, service the unit
memory check.
RAM FAILURE RAM FAIL Cycle the ON/STANDBY Button. If problem
Microprocessor failed a RAM persists, service the unit.
memory check.
VALVE FAILURE VALV FAIL Cycle the ON/STANDBY Button. If problem
Improper valve persists, service the unit.
combination occurred.
WATCHDOG FAILURE WDT FAIL Cycle the ON/STANDBY Button. If problem
Windowing watchdog system persists, service the unit.
detected a malfunction.
SYSTEM FAILURE SYS FAIL Cycle the ON/STANDBY Button. If problem
Internal diagnostic detected an error. persists, service the unit.
OVERPRESSURE OVER PRES Cycle the ON/STANDBY Button. If problem
The PRESSURE button has detected persists, service the unit. This occurrence
a pressure higher than the range could indicate a runaway pump.
of the unit.

14
 MAINTENANCE
SECTION 3.0
A.T.S. 1200 TOURNIQUET SYSTEM

3.1 GENERAL MAINTENANCE INFORMATION When reassembling the unit, be extremely careful not to
While the A.T.S. 1200 Tourniquet has been designed and pinch any wiring or tubing.
manufactured to high industry standards, it is recommended
that regular inspection and calibration be performed to 3.3 PERIODIC MAINTENANCE
ensure continual safe and effective operation. This section Test and inspect as per this section at minimum every six
contains information to assist in the effort as well as serve as months.
a guide to expediting unscheduled maintenance. 1. Cleaning
The exterior of the unit may be cleaned with a cloth that
3.2 ACCESS TO PARTS has been dampened (not dripping) with a mild detergent.
CAUTION: Be sure that the unit is set to STANDBY and The interior of the unit may be vacuumed or blown out
the power plug is unplugged before disassembly. Many of as required. The exterior of the cuff hose may be cleaned
the parts on the control board are static sensitive. Take using a mild detergent solution or alcohol. The interior
precaution when servicing the board. of the cuff hoses should not be cleaned. Tourniquet cuffs
should be cleaned in accordance with their cuff package
To gain access to all internal parts, remove: inset instructions.
a) Rear – 5 screws 2. Inspection
b) Rear – 2 large pole clamp screws The unit should be inspected at regular intervals. It is
c) Bottom – 4 foot pad screws recommended that a qualified technician perform a
visual inspection at least once every six months.
See Illustration 4 through 8 in the back of the manual. Inspection points are:
a) Obvious internal or external damage.
When opening, take care not to damage any of the wire b) Condition of the power cord.
harnesses or pneumatic tubing. The control board is attached c) Condition of the power cord-retaining clip.
to the front housing therefore the harnesses and tubing will d) Tightness of pneumatic fittings.
need to be disconnected for full disassembly. Follow the e) Condition of internal tubing.
table below to reassemble. f) Accumulation of dust or dirt within the unit.
g) Mating integrity of internal connectors.
Table 3.1 Board Plug Designators h) Security of the EPROM and safety processor.
Component Board Plug Location See Illustration 9 for location.
i) Integrity of the pump.
AC Mains P1 j) Security of circuit board.
Overpressure Switch P2 k) Security of the membrane panel.
3. Functional and Calibration Checks
Speaker P3
It is recommended that the functional and calibration
Pneumatic Pump P5
checks described in Section 2.4 are performed at least
Valve Harness P6 once every three months.
Backup Battery P7
Membrane Panel P8 3.4 CALIBRATION
Factory Test Port P9 Calibration should be performed every six months, or
after any unscheduled maintenance.
Main Cuff Port Tube U17 Calibration of the A.T.S. 1200 Tourniquet allows the
Second Cuff Port Tube U21 output signal from the pressure transducer to be compared
against a calibrated pressure source. The difference between
To reduce the risk of damage, the tubing should be the known pressure and the pressure measured by the
disconnected at the plastic tee fitting and not the transducer. transducers is recorded at each of four set points (0 mm Hg,
50 mm Hg, 250 mm Hg, and 475 mm Hg). These four
NOTE: Failure to plug the electrical or pneumatic
calibration factors are used to correct the signal from the
components into the correct associated receptacle can
pressure transducers during normal operation. The calibration
result in damage to the control board.
factors and a checksum are stored in non-volatile memory.

15
A.T.S. 1200 TOURNIQUET SYSTEM
EQUIPMENT REQUIRED: stabilized, press the PRESSURE button so the unit can
A.T.S. 1200 calibration hose (supplied). calibrate the 250 mm Hg point. The unit will beep to let
Calibrated 0 to 500 mm Hg pressure meter. the user know the set point was taken.
Adjustable 0 to 500 mm Hg pressure source. 8. Once the 250 mm Hg point is calibrated, press the MAIN
CUFF INFLATE button to advance the unit to the next
CAUTION: The following steps must be taken in the exact pressure level. The unit’s TIME display will now be
order to calibrate the unit. Failure to do so may result in alternating between “CAL” and “475”. Apply 475 mm Hg
incorrect pressure readings while the unit is in operation. to the unit’s Main cuff port. Once the pressure has
stabilized, press the PRESSURE button so the unit can
MAIN CUFF CALIBRATION calibrate the 475 mm Hg point. The unit will beep to let
The Main cuff transducer is always calibrated first. the user know the set point was taken.
Below is a step-by-step procedure for calibrating the 9. At this point, use the MAIN CUFF DEFLATE button
Main cuff transducer. The procedure continues with the to back the pressure level down to the point where the
Second cuff. Both cuff transducers should always be TIME display is alternating between “CAL” and “0”.
calibrated. The calibration will not be complete unless Then, press the MAIN CUFF INFLATE and the
both cuff transducer calibrations are performed. MAIN CUFF DEFLATE buttons simultaneously
to exit the Main cuff calibration and to enter the
1. To enter the calibration mode, press and hold the MAIN Second cuff calibration.
CUFF INFLATE and DEFLATE buttons while powering
the unit ON. The unit will enter the calibration mode SECOND CUFF CALIBRATION
when the PRESSURE and TIME display momentarily The Second cuff transducer is always calibrated last.
displays “CAL” “MODE”. After the “CAL” “MODE” Below is a step-by-step procedure for calibrating the
is displayed, the unit will display the software revision Second cuff transducer. The Second cuff transducer
level. The software revision level can be recorded for calibration is performed the same way the Main cuff
future reference. transducer calibration. Following the completion of the
2. After displaying the software revision level, the unit will Second cuff transducer calibration, be certain to perform
display “MAIN” “CUFF” in the PRESSURE and TIME the techniques described to save the calibration in non-
displays respectively. This is to indicate that the unit is volatile memory.
now ready to calibrate the Main cuff transducer.
3. The unit will now display “0” in the PRESSURE display 10. Once the unit enters the Second cuff transducer
and alternating “CAL” and “0” in the TIME display. calibration, the unit will beep and momentarily display
Throughout this procedure, the TIME display will “SCND” “CUFF” in the PRESSURE and TIME window
indicate the pressure in which the user is calibrating. respectively. This is to indicate that the unit is now ready
4. For zero, allow the port to be open to atmospheric to calibrate the Second cuff transducer.
pressure so the unit can sense the zero point (i.e. when 11. The unit will now display “0” in the PRESSURE display
setting the zero point, nothing should be connected to and alternating “CAL” and “0” in the TIME display.
the cuff port). By pressing the PRESSURE button, the Throughout this procedure, the TIME display will
unit will calibrate the pressure. The unit will beep to let indicate the pressure in which the user is calibrating.
the user know the set point was taken. 12. For zero, allow the port to be open to atmospheric
5. Connect the calibration hose, calibrated pressure meter pressure so the unit can sense the zero point (i.e. when
and adjustable pressure source to the Main Cuff port. setting the zero point, nothing should be connected to
See Figure 3 for more details. the cuff port). By pressing the PRESSURE button, the
6. Once the zero point is calibrated, press the MAIN CUFF unit will calibrate the pressure. The unit will beep to let
INFLATE button to advance the unit to the next pressure the user know the set point was taken.
level. The unit’s TIME display will now be alternating 13. Connect the calibration hose, calibrated pressure meter
between “CAL” and “50”. Apply 50 mm Hg to the unit’s and adjustable pressure source to the Second Cuff port.
Main cuff port. Once the pressure has stabilized, See Figure 3 for more details.
press the PRESSURE button so the unit can calibrate the 14. Once the zero point is calibrated, press the SECOND
50 mm Hg point. The unit will beep to let the user CUFF INFLATE button to advance the unit to the next
know the set point was taken. pressure level. The unit’s TIME display will now be
7. Once the 50 mm Hg point is calibrated, press the MAIN alternating between “CAL” and “50”. Apply 50 mm Hg
CUFF INFLATE button to advance the unit to the next to the unit’s Second cuff port. Once the pressure has
pressure level. The unit’s TIME display will now be stabilized, press the PRESSURE button so the unit can
alternating between “CAL” and “250”. Apply 250 mm Hg calibrate the 50 mm Hg point. The unit will beep to let
to the unit’s Main cuff port. Once the pressure has the user know the set point was taken.

16
 A.T.S. 1200 TOURNIQUET SYSTEM
15. Once the 50 mm Hg point is calibrated, press the 3.5 LEAK TESTING
SECOND CUFF INFLATE button to advance the unit The A.T.S. 1200 Tourniquet is capable of keeping a cuff with
to the next pressure level. The unit’s TIME display will a substantial leak inflated. Naturally it is desirable to keep
now be alternating between “CAL” and “250”. Apply plumbing leaks to an absolute minimum. For this reason,
250 mm Hg to the unit’s Second cuff port. Once the a check for significant leakage is recommended at regular
pressure has stabilized, press the PRESSURE button so intervals as well as following any service procedure.
the unit can calibrate the 250 mm Hg point. The unit After verifying the operation of the A.T.S. 1200
will beep to let the user know the set point was taken. Tourniquet per Section 2.4, connect a 24 in. (61 cm)
16. Once the 250 mm Hg point is calibrated, press the (or larger) cuff which is known to be leak free to the Main
SECOND CUFF INFLATE button to advance the unit to cuff port (red) of A.T.S. 1200 Tourniquet System. Adjust
the next pressure level. The unit’s TIME display will now the Main cuff set point to 475 mm Hg. Ensure that all
be alternating between “CAL” and “475”. Apply 475 mm external connections are tight. Inflate the Main cuff and
Hg to the unit’s Second cuff port. Once the pressure has allow the pressure to stabilize. At this point, the unit must
stabilized, press the PRESSURE button so the unit can be set to STANDBY. Under normal use, the unit cannot be
calibrate the 475 mm Hg point. The unit will beep to let set to STANDBY with a non-zero pressure value displayed
the user know the set point was taken. in either cuff. However for leak testing purposes, a bypass
17. At this point, use the SECOND CUFF DEFLATE button feature has been incorporated. Press the ON/STANDBY
to back the pressure level down to the point where the button until the alarm message “CUFF” “NOT” “DEFL”
TIME display is alternating between “CAL” and “0”. appears. Release the ON/STANDBY button and within
Then, press the SECOND CUFF INFLATE and the 5 seconds of the alarm discontinuing, press and hold the
SECOND CUFF DEFLATE buttons simultaneously to ON/STANDBY button again. The button must be held
exit the Second cuff calibration. The unit will display in for an additional 10 seconds before the unit will be
“CAL” “DONE” in the PRESSURE and TIME windows set to STANDBY.
respectively. The “CAL” “DONE” message tells the
user that the calibration set points that have been NOTE: During the 10 seconds, the alarm message will be
calibrated to the unit have now been saved into the displayed, the alarm will continue to sound and the ALARM
non-volatile memory. SILENCE button will not silence the alarm.

NOTE: If the “CAL” “DONE” message is not Once the unit is set to STANDBY, wait for approximately
displayed, the calibration is incomplete and the 10 minutes and turn the unit back on. Operation will resume
adjustments will not be saved. Be certain to end the under cuff inflated start-up conditions (See Section 2.6 Part 1
calibration session by simultaneously pressing the for explanation). Cancel the alarm using the ALARM
SECOND CUFF INFLATE and DEFLATE buttons SILENCE button. Display the set point by activating the
and verifying the “CAL” “DONE” message. PRESSURE button and view the current (New) pressure set
If the pressure settings were adjusted incorrectly point. The set point is always displayed with an asterisk in
on the Main or Second cuff and an attempt is made the far left position. The current set point for the cuff should
to have the unit calibrate the incorrect value that is be at least 400 mm Hg or more. Values less than this indicate
off by more than 15 mm Hg, a “CAL” “FAIL” alarm an unacceptable leak rate and the source of the leak should
will be generated. Service or calibration to the user’s be traced and corrected. The first connection to check should
pressure meter or pressure source is recommended. be the connections of the cuff. Different cuffs and/or cuff
If the pressure signal from the internal hoses may be tried to determine if the leak is internal or
transducer requires more then a 15 mm Hg external of the unit.
correction to equal the applied pressure, a “CAL”
“FAIL” alarm will also be generated. Service to the Repeat the test for the Second cuff port.
unit is recommended.
3.6 BATTERY VOLTAGE AND BATTERY
18. The unit remains in calibration mode until it is set SERVICE
to STANDBY. NOTE: This section assumes that the unit has been charged
19. The stored calibration factors are retrieved from the non- for at least 24 hours. The unit’s enclosure must be removed
volatile memory during the power-up sequence. If the to measure battery voltage. See Section 3.2 “Access to Parts”
checksum is invalid, a “CAL” “FAIL” alarm is generated and be sure to follow cautionary statements.
in the displays. The alarm will persist until the unit is set 1. Battery Voltage Check
to STANDBY. Re-calibration is required if this occurs. Be sure the unit is unplugged. Measure the battery
20. It is recommended to check the calibration by following voltage. The battery voltage should not be lower than
the steps in Section 2.4 Step 5 “Calibration Check” 12 V while the unit is unplugged and set to STANDBY.
before using this unit on a patient.
17
A.T.S. 1200 TOURNIQUET SYSTEM
If, after 1 minute, the voltage reads less than 12 V, the 3.9 EXPECTED TEST POINT READINGS
integrity of the battery should be suspect and should To expedite unscheduled maintenance, Table 3.3, Expected
be replaced. Test Point Readings, has been incorporated into this manual.
2. Battery Service This table, as well as Table 3.2, Troubleshooting, should give
The 12 V sealed lead acid battery is charged using lead a qualified technician a good starting point from which to
acid charging technology. The charging circuit is active locate and repair most problems that could occur during the
anytime the unit is plugged into an acceptable AC Mains life of the unit. Unless noted, all measurements are to be
outlet. The charger automatically sequences through made at room temperature with the cuffs disconnected, and
several charge states based on the battery voltage and the unit plugged in. All voltage measurements are with
charging current conditions. Based on a charger test, the respect to ground and are to be made with the unit on.
best charge mode is selected. No maintenance is
required of the battery charging circuit.
The life of the battery depends on the type of
service and the storage method. Battery replacement will
need to be more frequent with continued cycles of deep
discharge and/or storage in a high temperature
environment.
Infrequent short-term use of the battery and storage
in a room temperature environment will result in
maximum life. It is recommended that the battery in the
A.T.S. 1200 Tourniquet System be replaced annually. As
a reminder, the A.T.S. 1200 System should be plugged in
24 hours before initial use.

3.7 UNSCHEDULED MAINTENANCE

The A.T.S. 1200 Tourniquet is designed with several specific
self-test features to assist in fault isolation. These features are
designed to show messages in the PRESSURE and TIME
displays. The meanings of these messages are delineated in
Table 2.1.
Another mode of failure that may occur is when an
audible alarm occurs that cannot be silenced by the ALARM
SILENCE button. The valve and pump will be disabled
which seals off the cuff to prevent pressure loss. The displays
may show random characters. Should this occur, the watch
dog timer circuit of the safety processor has detected a
problem. The microprocessor may not be executing reliable
instructions and is not able to display the correct failure
message. This unit should be serviced if this occurs.
The calibration error message “CAL” “FAIL”, “CALM”
“FAIL” or “CAL2” “FAIL” may be due to defective circuitry
or may simply indicate the need for calibration.

3.8 TROUBLE SHOOTING GUIDE

To aid in unscheduled maintenance, Table 3.2 delineates a
number of possible malfunctions that could occur with the
unit. The most likely causes are shown for each symptom.
While it is not practical to enumerate every conceivable
malfunction and all possible causes, the table will assist in
isolating the most common problems.

18
 A.T.S. 1200 TOURNIQUET SYSTEM
Table 3.2 Troubleshooting
SYMPTOM POSSIBLE CAUSES
1. Main cuff or Second cuff will not inflate. a) Membrane Panel not properly plugged into P8.
b) Tubing inside unit may be pinched or improperly connect-
ed.
c) Deflate valve is stuck open.
d) Pump not properly plugged into P5.
e) Pump’s electrical harness damaged.
f) INFLATE button not working.
g) Valve’s electrical harness damaged (P6).
h) Defective valve driver circuitry.

2. Main cuff or Second cuff will not deflate. a) Membrane Panel not properly plugged into P8.
b) DEFLATE button not pressed long enough
(at least 2 seconds).
c) Deflate valve is stuck shut.
d) DEFLATE button not working.
e) Valve’s electrical harness damaged (P6).
f) Defective valve driver circuitry.

3. No green AC MAINS indicator light. a) Unit not plugged into wall outlet.
b) No Power at wall outlet.
c) Mains AC harness not properly plugged into P1.
d) Blown fuse(s).
e) Membrane Panel not properly plugged into P8.
f) Defective AC MAINS indicator.
g) Defective AC MAINS indicator circuitry.

4. No flashing orange BATTERY indicator light. a) Unit running on AC.

b) Membrane Panel not properly plugged into P8.
c) Defective BATTERY indicator.
d) Defective BATTERY indicator circuitry.

5. ALARM SILENCE button not working. a) Membrane panel not properly plugged into P8.
b) Non-silenceable alarm (System Failure).
c) ALARM SILENCE button defective.
d) Defective alarm silence circuitry.

6. ALARM indicator light not working. a) Membrane panel not properly plugged into P8.
b) Defective ALARM indicator.
c) Defective ALARM indicator circuitry.

7. No cuff pressure reading. a) Transducer amplifier not working.

b) Internal tubing kinked.
c) Transducer tubing on incorrect transducer.

8. Pump will not stop running. a) Leak in internal hose or connector.

b) Internal tubing kinked.
c) Transducer(s) not working.
d) Transducer tubing on incorrect transducer.

9. BATTERY FAIL alarm/message. a) Blown battery fuse (board mounted F1).

b) Broken Battery wire harness.
c) Dead or depleted battery.

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A.T.S. 1200 TOURNIQUET SYSTEM

10. Backup battery not charging. a) Blown battery fuse (board mounted F1).
b) Battery not properly plugged into P7
c) Unit not plugged into wall outlet (verify that the green
AC MAINS indicator is illuminated).
d) Mains AC harness not properly plugged into P1
(verify that the green AC MAINS indicator is illuminated).
e) Unit was not permitted to charge for at least 24 hours.
f) Defective battery.
g) Defective battery charging circuitry.

11. AMP FAIL alarm. a) Transducer(s) amplifier out of range.

b) Battery fully depleted or defective.
c) Extremely high pressure exerted on transducers.

12. Unit cannot be set to STANDBY. a) Membrane panel not properly plugged into P8.
b) Pressure sensed in the Main or Second cuff
(unit will be alarming “CUFF” “ NOT” “DEFL”).
c) ON/STANDBY not fully pressed.
d) ON/STANDBY button defective.

13. Unit does not turn on. a) Membrane panel not properly plugged into P8.
b) ON/STANDBY button defective.
c) Blown Fuse(s).
d) Unit not plugged in and battery fully depleted.

20
 A.T.S. 1200 TOURNIQUET SYSTEM
Table 3.3 Expected Test Point Readings
Board Location Nominal-Reading Tolerance Description/Comments
TP1 0 VDC N/A GND – Digital ground
TP2 14 VDC ±1 VDC Main DC supply voltage
TP3 AC Line Voltage N/A AC power supply common
TP4 0 VDC N/A Digital ground
TP5 0 VDC N/A Digital ground
TP6 14 VDC ±1 VDC Main DC supply voltage
TP7 4.4 VDC ±0.5 VDC Audio amp output resting voltage
TP8 11 to 14 VDC ±1.0 VDC Power ON/STANDBY – unit ON
0 VDC N/A Power ON/STANDBY – unit STANDBY
TP9 5 VDC ±0.5 VDC Digital 5 V power
TP10 0 VDC N/A Analog ground
TP11 5 VDC ±0.5 VDC Supply voltage for U12 and U8
TP12 4.096 VDC ±0.1 VDC Transducer(s) reference voltage
TP13 5 VDC ±0.5 VDC Transducer(s) voltage supply
TP14 12 to 14 VDC 1.0 VDC Battery/AC supply output
TP15 5 VDC ±0.5 VDC Reset – U14 or U7
TP16 11 to 14 VDC ±1.0 VDC Pneumatics control ON/OFF
TP17 32.768 kHz N/A Oscillator square wave
TP18 N/A N/A Factory use only
TP19 0 VDC N/A Digital ground
TP20 N/A N/A Factory use only
TP21 26.4 to 27.5 VDC ±1.0 VDC Boost supply for battery charger
TP22 5 VDC ±0.5 VDC Supply voltage for battery charger
TP23 5 VDC ±0.5 VDC ON/STANDBY switch = OPEN
0 VDC N/A ON/STANDBY switch = CLOSED
TP24 4 to 5 VDC ±0.5 VDC Power ON control signal to Q10 = ON
0 VDC Power ON control signal to Q10 = STANDBY
TP25 0 VDC N/A Digital ground

NOTE: USE TP1 (GND – DIGITAL GROUND) AS VOLTAGE REFERENCE FOR ALL DIGITAL MEASUREMENTS
AND TP10 (ANALOG GROUND) FOR ALL ANALOG MEASUREMENTS.

CAUTION: HIGH VOLTAGE ELECTRICAL HAZARD. HIGH VOLTAGE WILL BE PRESENT ON THE
POWER INPUT MODULE AND CONTROL BOARD. ALL SERVICE WORK MUST BE COMPLETED BY
QUALIFIED TECHNICIANS.

NOTE: If the unit is locked in a failure, not all test voltages will be valid. For instance if the unit is experiencing valve
trouble, the pneumatic voltage will not be the normal reading but rather a post failure reading which could be erratic.
Above voltages are listed for normal readings because failure readings will likely be unpredictable.

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A.T.S. 1200 TOURNIQUET SYSTEM
3.10 REPLACEMENT PARTS
The following is a list of field replacement parts that can be ordered from Zimmer. To obtain parts or additional information
regarding your unit, write or phone:

MAIL: Zimmer Orthopaedic Surgical Products

200 West Ohio Avenue
Dover, Ohio 44622 U.S.A.
PHONE: 1-330-343-8801 or 1-800-830-0970
You can also contact your local Zimmer distributor. To ensure prompt service, please include the following information with
your order:
Model Number
Serial Number
Description of Part
Part Number (if known)
Quantity Desired
Shipping Address
Shipping Means (if any)

We strongly recommend that all repairs be done by Zimmer staff.

Parts marked with an “*” are commonly used maintenance and/or preventive maintenance parts.
Table 3.4 Parts List
Zimmer Description Zimmer Description
Replacement Replacement
Part Number Part Number
0600-1304883 1 A Fuse, 5 x 20 mm* 62-1340-001-00 Valve Muffler
0600-1501263 Calibration Hose* 62-1711-001-00 12 V Pump
0600-2002018 Plumbing Assembly 62-1714-001-00 ROTARY Knob
60-0938-003-00 A.T.S. Stand 5-Wheel Caster Kit 62-1726-001-00 Overpressure Switch
60-2360-001-00 A.T.S. Pole Clamp Knob w/Screw 62-2671-001-00 A.T.S. Female Pneumatic Coupling
60-3000-001-00 A.T.S. Cal & Regulator Kit 62-2879-001-00 Male PLC
60-7000-027-00 Backup Battery 62-2879-002-00 Female PLC
60-8000-013-00 A.T.S. 1200 Rear Housing w/5 Labels 62-8000-001-00 Pneumatic Manifold
60-8000-014-00 A.T.S. 1200 Feet and Case Screws 62-8000-004-00 Battery Bracket
60-8000-020-00 A.T.S. 1200 Digital Encoder 62-8000-005-00 Membrane Panel
60-8000-026-00 A.T.S. 1200 Pole Clamp Assy 62-8000-006-00 Clippard Valve (yellow)
60-8000-102-00 A.T.S. 1200 P.C.B. Calibrated & Tested 62-8000-007-00 Burkert Valve (black)
60-8000-112-00 A.T.S. 1200 Front Housing 62-8000-008-00 Overpressure Switch Harness
61-7308-000-00 PLC O-Rings Kit, 25 each 62-8000-009-00 Battery Harness
62-1137-001-00 Fuse Drawer, 1/4 in. x 1-1/4 in. 62-8000-010-00 Power Cord*
62-1138-001-00 Fuse Drawer, 5 x 20 mm 62-8000-015-00 Operator’s and Service Manual
62-1167-001-00 Power Entry Ground Wire 62-8000-018-00 Mains Wire Harness
62-1179-001-00 1 A Time Delay 1-1/4 in. Glass Fuse* 62-8000-019-00 Cord Retaining Clip*
62-1193-001-00 Power Entry Module

3.11 STORAGE
The A.T.S. 1200 Tourniquet System has an operating range of 50 °F to 100 °F (10 °C to 38 °C).
The following are environmental conditions for transportation and storage:
A. Ambient temperature range…………………………………… 1 °F to 149 °F (–17 °C to 65 °C)
B. Relative humidity range………………………………………. 10 % to 80 %
C. Atmospheric pressure range………………………………….. 500 hPa to 1060 hPa

22
 1

A) Carrying Handle J) SECOND CUFF INFLATE/DEFLATE

B) PRESSURE ADJUST Activation Buttons Buttons
C) ALARM SILENCE Button K) Second Cuff Port
D) Red ALARM Indicator L) Main Cuff Port
E) TIME/PRESSURE Adjustment Knob M) MAIN CUFF INFLATE/DEFLATE Buttons
F) TIME ADJUST Activation Button N) MAIN CUFF INFLATION Indicator
G) ON/STANDBY Button O) SECOND CUFF INFLATION Indicator
H) Green AC MAINS Indicator P) TIME Window (displayed in minutes)
I) Orange BACKUP BATTERY Indicator Q) PRESSURE Window (displayed in mm Hg)

23
 2

R) Power Cord
S) Cord Retaining Clip
T) Factory Test Port
U) Pole Clamp
V) Mains Fuse Block

24
 3

W) Calibrated Pressure Meter with a range of 0 to 500 mm Hg

X) Pressure Regulator/Source adjustable from 0 to 500 mm Hg
Y) Calibration Hose Included with Unit

25
 4 5

Opening the front case

1) Remove 3 screws on top, 2 at side and 2 feet Removing the front case
on bottom. 1) Carefully slide the front off the rear.

6 7

Disconnecting the wiring

1) Use caution when disconnecting the wiring. Removing the rear case
Mark the wires before disconnecting or see 1) Remove 2 pole clamp screws on rear and
Section 3.2 for proper re-connect. 2 feet on bottom.

26
 8

Rear Case separation

1) All components are easily accessed when the rear case is removed. Reverse the process to reassemble.
Be extremely careful not to pinch any wiring or tubing when reassembling!

27
 9

Control Board Layout

28
 A.T.S. 1200 TOURNIQUET SYSTEM
3.12 WARNINGS, CAUTIONS, AND SYMBOL DEFINITIONS
(See Illustration 10)

Type BF equipment

Alternating Current (AC)

Protective earth ground

Direct Current (DC)

Refer to instruction manual

Electrical hazard dangerous voltage

xxxx
Year of manufacture

Replace fuse as marked

Conformity Marking of the Council of the

European Community (TÜV Product Services,
Munich, Germany)

UL/C-UL Classification mark

Medical Equipment with respect
to electric shock, fire and
mechanical hazards only, in
accordance with UL 60601-1,
CAN/CSA C22.2 No. 601.1, and
IEC 60601-1

This product contains electrical or electronic materials. The presence of these materials may, if not disposed
of properly, have potential adverse affects on the environment. Presence of this label on the product means it
must not be disposed of in normal household waste and must be disposed of separately. To find out how to
properly dispose of this product, please contact your local Zimmer Representative.

29
10

30
SCHEMATICS
Revised: 04-06 Zimmer Orthopaedic Surgical Products
©2002, 2006 Zimmer Orthopaedic Surgical Products, Inc. 200 West Ohio Avenue
Printed in U.S.A. P.O. Box 10
0123
62-8000-015-00 ENG Dover, Ohio 44622 U.S.A.