Tridien Medical ST-1200 User manual

ST-1200 & ST-1400
Pressure
Relief Systems
Operating Instructions
Tridien Medical
Revision: AO-SM-ST-00

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Medical Electrical Equipment needs special precautions regarding Electromagnetic
Compatibility (EMC) and needs to be installed and put into service according to the
EMC information provided in this manual.
Portable and mobile RF communications equipment can affect Medical Electrical
Equipment. The use of accessories, transducers, and cables other than those
specified, with the exception of transducers and cables sold by the manufacturer of
this device as replacement parts for internal components, may result in increased
emissions or decreased immunity of the ST SYSTEMS.
The ST SYSTEMS should not be used adjacent to or stacked with other equipment.
However, if adjacent or stacked use is necessary, the ST SYSTEMS should be
monitored to verify the product is operating as intended in whichever configuration it is
being used.
Before operating this medical equipment, it is important to read this manual
and to understand the operating instructions and safety precautions. Failure
to do this could result in patient injury and/or damage to the product.
This equipment generates uses and radiates radio frequency energy and, if
not installed and used in accordance with the instructions, may cause
harmful interference to other devices in the vicinity (See Section 7.5).
However, there is no guarantee that interference will not occur in a particular
installation. If this equipment does cause harmful interference to other
devices, which can be determined by turning the equipment off and on, the
user is encouraged to try to correct the interference by one or more of the
following measures:
Reorient or relocate the receiving device.
Increase the separation between the equipment.
Connect the equipment into an outlet on a circuit different from that to
which other device(s) are connected.
Consult with Tridien for help.
If you have any questions, please contact Tridien Medical Customer Service
at 800-474-4225 or 954-340-0500.
WARNING
!

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TABLE OF CONTENTS
Page
1.0 Safety Precautions 3
2.0 Product Overview 5
3.0 Installation 6
4.0 Operation
4.1 Control Panel 8
4.2 Key Functions 8
4.3 Additional Functions 11
4.4 Settings and System Information 12
4.5 CPR Operation 15
5.0 Maintenance and Cleaning 18
6.0 Troubleshooting Guide 22
7.0 Product Specifications
7.1 Electronic Controller 24
7.2 Support Surface 25
7.3 Safety Agency Approvals 25
7.4 Parts & Accessories 25
7.5 Product Compliance Declarations 26
8.0 Warranty Information 30
9.0 Product Return 31
REFERENCE FOR FIGURES:
Figure #
Description
Page
1
ST Control Panels
8
2
Main Screen
9
3
Menu Configuration Map
12
4
Main Menu Screen
12
5
Patient's Weight
13
6
Advance Settings Menu
13
7
Set Pressure Menu
14
8
Float Pressure Adjustment
14
9
Set Pressure Menu
14
10
AP Pressure Adjustment
14
11
Fowler Boost Adjustment
14
12
AP Cycle Time Adjustment
15
13
Selection of Weight Units (lbs/kg)
15
14A, B & C
CPR
16
15A & B
Color Code of CPR
17
16
Color Code of Hoses Inside Mattress
17
17
Replacement of CPR Hose
18

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1.0 SAFETY PRECAUTIONS
CAUTION! The ST-1200 & 1400 Systems (“ST SYSTEMS”) are
contraindicated for use with certain medical conditions and treatments. Always
consult with the patient’s physician before placing a patient on an
alternating pressure system.
CAUTION! Bed frames used with the ST SYSTEMS can vary greatly
depending on the specific health care setting, e.g., hospitals, nursing homes,
home care. Therefore, it is the responsibility of the caregiver to take the
necessary precautions to ensure the safety of the patient. This includes, but is
not limited to, the appropriate use of side rails to prevent falls and/or patient
entrapment.
Electronic Controller:
DANGER!
Do not use in the presence of flammable anesthetics. Risk of explosion
can result.
Exposure of the electronic controller to any liquid while it is plugged in
could result in a severe electrical hazard.
Only use fuses that have the same specified rating (See Section 7.0
Product Specifications). Using fuses with higher ratings could result in
damage and/or injury.
CAUTION!
Risk of Electric Shock. Do not open or attempt to repair or service the
electronic controller. Repairs and service should only be done by Tridien
Medical. If the controller is not functioning properly, or has been damaged,
unplug the unit and take it out of service immediately. Contact Customer
Service at 800-474-4225 or 954-340-0500 for repair and service
information.
The electronic controller is a precision electronic product. Use care when
handling or transporting. Dropping, or other sudden impacts, may result in
damage to the controller.

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CAUTION! PE GND terminal in the appliance is only for functional earth.
The unit is a Class II device with functional earth and used only for functional
purposes.
IMPORTANT!
Do not return a product for any reason without first contacting Customer
Service to obtain authorization (See Section 9.0).
Do not place any objects/items, such as blankets, on, or over, the
electronic controller. Excessive weight placed on the ST SYSTEM
MATTRESS, i.e., greater than 500 pounds /226 kilograms could result in
damage to the electronic controller or mattress (See Section 7.1).
After exposure to extreme high or low temperatures, allow electronic
controller to reach room temperature before operating.
The ST SYSTEMS circulate room air during operation. Exposure to smoke
may cause the system to fail. Therefore, smoking by patients, or visitors,
while using the ST SYSTEMS is strongly discouraged.
The power cord to the electronic controller should be positioned to avoid a
tripping hazard and/or damage to the cord. Tridien recommends placing
the cord under the bed frame and plugging it into an electrical outlet by the
head of the bed.

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2.0 PRODUCT OVERVIEW
The ST SYSTEMS are microcontroller-based therapeutic Pressure Relief
Mattress Systems for patient weights up to 500 pounds/226 kilograms.
The Alternating Pressure feature provides pressure relief by sequentially
deflating and inflating alternate air cells on a timed interval. It is widely
recognized that constant pressure to a bony prominence is the leading cause of
skin breakdown. The movement of the air cells helps to alleviate these areas of
constant pressure and enhances circulation.
The ST Mattress is equipped with side bolsters.
ST-1200 –Integrated only
ST-1400 –Integrated and Raised
The Low Air Loss (LAL) feature is available on all ST Systems; it delivers a flow
of air to the patient to aid in maintaining a temperature environment that
enhances pressure wound therapy.
ST-1200 directs the flow through the mattress
ST-1400 uses Micro-vent™ Technology to direct the flow through the
cover to the patient’s skin.
The electronic controller provides a real-time display of the air pressure for both
the inflated and deflated air cells. The deflated air cells provide pressure relief,
while the inflated air cells support the patient’s weight. The amount of pressure
needed to support a patient can be set automatically, based on the patient’s
weight, or can be set manually through custom configurations in Advanced
Settings.
All settings are stored in memory. If the power is interrupted, the controller
returns to the previous settings when the power returns, with the exception of
the Alarm Mute and keypad Lock functions.
IMPORTANT! The ST-1200 & 1400 are all part of the same product line.
However, due to specific design functions, the components are not
interchangeable. Doing so may cause loss of functionality and/or unwanted
alarm conditions. To aid in differentiating between the two models, each cover,
mattress and controller has a label indicating the model. The zipper on the
mattress and cover is also color coded. The ST-1400 zipper is blue and the ST-
1200 is black.

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3.0 INSTALLATION
NOTE - It is recommended that all shipping and packing material be saved in
the event that the product has to be sent back to Tridien.
3.1 Unpacking and Inspection
Carefully remove the controller, mattress and all accessories from the
shipping cartons. Inspect all items for any damage that may have
occurred during shipping. Any damages, or missing components, should
be reported to Tridien Customer Service as soon as possible.
Mattress Replacement –The box contains a completely assembled
mattress replacement system. The mattress consists of:
1.5 Inch Foam Overlay
Air Cell Assembly
Top Coverlet
CPR Hose Assembly
LAL Hose
Integrated Bolsters
Raised Bolsters (ST-1400 Only)
Electronic Controller - The electronic controller is in a separate box
containing:
Electronic controller
Power cord
Operating Instructions
3.2 Installation
ST SYSTEMS are designed to operate in a controlled environment,
which is free from extreme temperatures, high humidity and/or excessive
amounts of airborne particulates, such as dust and smoke.
3.2.1 Mattress Replacement:
1. Remove the current mattress from the bed frame.
2. Unroll the ST Mattress Replacement on the frame.
3. Position mattress and hoses so that the:
CPR hose assembly is to the LEFT of the controller
LAL hose is to the LEFT of the controller
4. There are two sets of straps with D-rings on each side of the
mattress and one at the head of the mattress. Use these straps
to secure the mattress replacement to the bed frame.
Caution! Make sure that the attachment of the mattress
does not interfere with the bed movement or operation. This
could result in damage to the mattress.
5. Attach CPR pull to the ST controller (See Section 4.5)

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3.2.2 Electronic Controller:
1. Hang the controller on the TOP edge of the footboard on the
bed frame.
2. Attach the hose/CPR assembly to the LEFT side of the
controller (See Section 4.5).
3. Attach the LAL hose to the single connector on the LEFT side
of the controller.
4. Plug into a grounded 115 Vac 60 Hz electrical outlet.
Controller will come on automatically and “beep” to alert
caregiver that it is active.
5. To begin operation, press the POWER ON/OFF button (See
Section 4.2)
6. Press Max button for rapid inflation of entire mattress.
7. Always place patient in center of mattress.
NOTE - In the event of a power outage or turning the pump
off, it will always come back on in the mode which was last
selected.
8. Once full, you can begin patient setup.
9. During initial inflation, the integrated bolsters will fill first,
followed by the alternating cells.

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4.0 OPERATION
4.1 Control Panel
The ST-1400 control panel is shown in the diagram below. The control
panels for the ST-1200 & ST-1400 controller are the same except as noted
below:
4.2 Key Functions
The keypad has three (3) types of touch keys:
1. Function Keys:
ST-1400: Therapy, Max, Fowler, LAL and Inflate Bolsters
ST-1200: Alternating Pressure, Float, Max, Fowler & LAL
2. Settings Keys:
Menu, Up and Down Keys
3. Feature Keys:
Power ON/OFF, Lock, Alarm Mute
ST-1200 ONLY
Figure 1: Control Panels

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POWER ON/OFF (All ST SYSTEMS)
When the power cord is first inserted in the AC socket on the back cover,
the unit goes into Standby Mode and a green LED will blink every 3
seconds until the POWER ON/OFF button is pressed.
Press the POWER ON/OFF button to start system operation. The Main
Screen shown in Figure 2 will appear. However, the pressure reading will
vary from the figure below.
Figure 2: Main Screen
The second line shows three fields:
The set pressure for Zones A and B
The real-time pressure in Zone A
The real-time pressure in Zone B.
Set pressure may be increased or decreased by pressing the Up or Down
keys, respectively.
MAXIMUM INFLATE (All ST SYSTEMS)
This key activates or deactivates the MAXIMUM INFLATE mode. When
activated, the screen displays Max and all mattress cells are inflated to 50
mmHg to provide a firm, flat surface. This mode will last for approximately
20 minutes, unless turned off by pressing the MAX key again. The system
will then revert back to the previously set operating mode.
The mattress MAX pressure value is not adjustable.

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LOW AIR LOSS (All ST SYSTEMS)
This key activates or deactivates the LAL feature. When activated, LAL is
shown on the display and a gentle diffused flow of air is delivered through
the LAL coverlet (ST-1400), or the mattress (ST-1200). The air will begin
to flow only after the mattress has reached the set pressure, either after
initial installation or in any mode such as AP, Float, or MAX. The air flow
will also be temporarily interrupted while the raised bolster is inflating.
THERAPY (ST-1400 System)
This key selects the ALTERNATING PRESSURE RELIEF (AP) or AIR
FLOTATION (Flt) mode. The screen display toggles between Flt and AP.
NOTE! The ST-1200 has separate keys for these two therapies.
FOWLER BOOST (All ST Systems)
This key activates or deactivates the FOWLER BOOST (FB) mode. When
activated, FB is shown on the display and the set pressure in the mattress
is automatically increased by a set percentage. It is not available when the
system is in Maximum Inflate mode. The percentage of increase may be
modified by going to ADVANCED SETTINGS.
This feature helps prevent a patient from “bottoming out”when he or she is
put into an inclined or “Fowler” position.
INFLATE BOLSTERS (ST-1400 System)
This key inflates or deflates only the raised side bolsters. When activated,
Inf is shown on the display and the bolsters will take approximately (1)
minute to inflate.

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Inflating these bolsters increases bolster height on the sides of the
mattress. Integrated bolsters and raised bolsters are inflated to 60 mmHg.
This value is not adjustable.
4.3 Additional Functions
LOCK KEYPAD (All ST SYSTEMS)
This key locks all keys, including the Power ON/OFF key. Press and hold
for 2 seconds to activate. The corresponding blue LED is lit. Press and
hold for 2 seconds to unlock. In the event of a power outage or being
unplugged, the Lock function will deactivate and must be reset when
power is restored.
ALARM FUNCTION
The ST System is equipped with an audible alarm to alert the user that the
actual pressure in the air cells is below or above the set pressure. An error
message will also appear on the display instructing the user to “Check Air
Cells”. This will happen in approximately 10 minutes. The alarm and error
message will continue until the problem is resolved, unless in AP mode.
See NOTE below.
NOTE: In AP mode, once the problem is resolved, it takes two cycles for
the alarm to stop. The unit may also be turned off for 10 seconds and
turned back on to reset the alarm more quickly.
Refer to Troubleshooting guide for further instructions.
See Section 6.0
AUDIBLE ALARM MUTE (All ST SYSTEMS)
This key mutes the AUDIBLE ALARM. When the ALARM MUTE key is
pressed, the AUDIBLE ALARM cannot be heard, but an error message
continues to flash on the display and a solid blue LED activates. If the
alarm condition is not resolved within 15 minutes the audible alarm will re-
activate. In the event of a power interruption, the Alarm Mute function will
deactivate. (See Troubleshooting Guide in Section 6.0).

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4.4 Settings and System Information (All ST SYSTEMS)
MENU
Press this key to enter the MAIN MENU options screen. Once in the Main
Menu, use the ARROW keys to select the desired option and then press
the MENU key a second time to save the selected option.
ARROWS
ARROW keys moves the selection arrow up or down one row at a time
and are also used to increase/decrease numerical values.
4.4.1 Menu Configuration Map
PATIENT SETUP
ADVANCED
UNITS
EXIT
Set Pressure
Set Fowler
Set Cycle
Exit
Float
AP
lbs
Kg
Exit
MAIN MENU LEVEL 1 LEVEL 2
Figure 3: Menu Configuration Map
4.4.2 Main Menu
While the unit is showing the Main Screen (Figure 2) pressing the
Enter/Menu key shows the Main Menu screen (See Figure 4).
Figure 4: Main Menu Screen

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1. Patient Setup
This option is used to set the patient’s weight. The Controller automatically
adjusts the pressure values for Float and Alternating Pressure modes
based on the patient’s weight. Resetting the patient’s weight at any time
will override any user changes to AP and/or Float Pressures entered
directly on the main screen or through the Advanced Settings. However,
Fowler Boost and Cycle Time do not reset. They must be adjusted
manually. By default, Fowler Boost is 20% and Cycle time is 6 minutes.
Figure 5: Patient's Weight
Use the Up and Down arrows to set the patient’s weight. When done,
press the Enter/Menu key to save and return to the main screen.
2. Advanced settings
This option is used to customize settings such as Mattress Pressures,
percentage of Fowler Boost increase and AP Cycle time. From the Main
Menu screen (Figure 4) select Advanced. The Advanced Menu will
appear. (Figure 6)
SET PRESSURE
Figure 6: Advance Settings Menu
Use the Up and Down arrow keys to select the desired feature. Press the
Enter/Menu key to select “Set Pressure” in order to adjust Float and AP
pressures.

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SET FLOAT
Use the Up and Down arrow keys to select Float. Press the Enter/Menu
key. Once Float is selected, (Figure 8), use the Up and Down arrow keys
to set the desired float pressure. When done, press the Enter/Menu key to
save and return to the Main Screen.
SET AP
Use the Up and Down arrow keys to select AP. Press the Enter/Menu
key. Once AP is selected, (Figure 10), use the Up and Down arrow keys
to set the desired AP pressure. When done, press the Enter/Menu key to
save and return to the Main Screen.
SET FOWLER
Use the Up and Down arrow keys to select Set Fowler. Press the
Enter/Menu key.
Figure 11: Fowler Boost Adjustment
Figure 9: Set Pressure Menu
Figure 10: AP Pressure
Adjustment
Figure 7: Set Pressure Menu
Figure 8: Float Pressure
Adjustment

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Use the Up and Down Arrow keys to set the desired Fowler Boost
percentage increase. When done, press the Enter/Menu key to save and
return to the Main Screen.
SET CYCLE
Use the Up and Down arrow keys to select Set Cycle. Press the
Enter/Menu key. The default cycle time is 6 minutes.
Figure 12: AP Cycle Time Adjustment
Use the Up and Down arrow keys to set the desired Cycle time. When
done, press the Enter/Menu key to save and return to the Main Screen.
SET WEIGHT UNITS (Pounds/Kilograms)
From the main menu screen use the Up and Down arrow keys to select
Lbs/Kg. Press the Enter/Menu key. Choose either English units (Lbs =
Pounds), or SI units (Kg = Kilograms) by using the up and down arrow
keys.
Figure 13: Selection of Weight Units
Press the Enter/Menu key to save and return to the Main Screen.
EXIT
Select this option to make no changes and return to the Main Screen.
4.5 CPR OPERATION
The CPR pull provides the caregiver with the ability to rapidly deflate the
support surface in emergency situations.
4.5.1 Figure 14A shows the location of the CPR assembly on the left
lower side of the controller during normal operation.
4.5.2 Connecting the CPR

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IMPORTANT! The CPR pull is designed to attach to the controller
with a specific orientation. Make sure you align the CPR pull key
with the CPR receptacle on the controller and that the CPR label is
visible from the front:
1. ALWAYS align the CPR “key” with the key on CPR receptacle.
2. Completely insert the CPR pull until a “click” is heard. (See
Figures 14A, 14B, 14C).
4.5.3 To release the CPR pull, place your thumb and opposing finger on
the release tabs located on the TOP and BOTTOM of the CPR pull
and completely depress both tabs simultaneously as shown in
Figure 14B.
4.5.4 With both tabs depressed, pull the CPR pull away from the
controller to deflate the mattress. The rate of deflation is dependent
on the weight of the patient. (See Figure 14C).
4.5.5 CPR Hose Replacement/Repair
Follow the steps below for proper CPR hose replacement:
NOTE: The CPR hoses are color coded for ease of replacement. It is
very important to reconnect the hoses in the proper location for the
ST SYSTEM to function correctly.
1. Remove the CPR pull from the controller according to Step 4.5.3-
4.5.4 above.
2. Hold the CPR in one hand and pull the hose needing
replacement until the white connector and hose separate and
come loose from the CPR. Retain connector to re-use in Step 7.
3. Remove the other end of the hose from the connector inside the
mattress.
4. Remove tubing wrap and discard unwanted hose.
Figure 14A
Figure 14B
Figure 14C

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5. Obtain a new hose of the same length and apply appropriate
color code label to one end of the hose (See Figure 15A). Labels
and hoses can be purchased through Tridien.
IMPORTANT! Always maintain color coding convention when changing
CPR hoses.
6. Connect hose to the appropriate color coded connector inside mattress.
7. Feed opposite end of the hose through the CPR and completely insert
connector that was removed during Step 2, leaving a slight gap
approximately equal to 1/10’’.
8. Holding the CPR in one hand, pull the hose slowly until the connector is
fully inserted. Stop pulling when connector flange is flush with the plug
base.
NOTE! CPR will not attach to the controller properly if connector is not
flush. Do not push connector while trying to insert.
Figure 15A: Color-Coding of
CPR Hoses
Figure 15B: Color-Coded Attachment
Guide for CPR Assembly
Figure 16: Color-Coding of
CPR Hoses Inside Mattress
Integrated
Bolster BLUE
Raised Bolster
GREEN
B Zone BLACK
A Zone RED
KEY

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9. Repeat steps 2-8 if multiple hoses need replacement.
10. Re-apply tubing wrap.
5.0 MAINTENANCE AND CLEANING
IMPORTANT! All disinfection should be done using a “hospital-grade”
disinfectant registered with the Environmental Protection Agency (EPA) and in
accordance with the manufacturer’s specified instructions. Check manufacturer’s
instructions before use.
5.1 Electrical Controller
The electronic controller is easy to maintain:
5.1.1 Fuse Replacement
CAUTION! Only use UL/ETL-Approved fuses that have the same
rating as specified (See Section 7.0). Using fuses with higher ratings
may result in damage and/or injury:
1. Remove the power cord from the electrical socket on the
back of the controller.
2. Using the tip of your finger or a small sized flat-head
screwdriver, push the small tab on the fuse drawer and slide
it out of the socket.
3. Remove the “blown” fuse from the fuse holder receptacle and
discard.
4. Insert the replacement fuse in the same fuse receptacle.
5. Push the fuse holder completely back into the electrical
socket until it “snaps” into place.
6. Replace power cord and turn on the controller.
Figure 17: Replacement of CPR Hose

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5.1.2 The exterior of the controller and CPR assembly should be
periodically wiped down with a cloth dampened with disinfectant.
CAUTION! DO NOT spray disinfectant directly on the
electrical controller, or immerse the controller in any type of
liquid. This could result in a severe electrical hazard.
5.1.3 Before plugging in the controller, check the power cord for
electrical hazards, e.g., cuts, exposed wires, worn insulation, etc.
If hazards are present, take the controller out of operation
immediately and contact Tridien Customer Service at 800-474-
4225 or 954-340-0500.
5.1.4 To ensure optimal performance, calibration and Bio-Med testing
of your ST System,should be performed at least annually.
Contact Tridien Customer Service for calibration and Bio-Med
information. Tridien will provide one free Bio-Med test.
5.1.5 The filter on the bottom of the controller should be checked
periodically and cleaned as needed. A standard vacuum hose
with a brush attachment should be used to clean the filter.
5.2 Coverlet
5.2.1 Washing and Disinfecting
If there are visible signs of body fluids and/or substances
present, coverlets should be washed between patients. Coverlets
can be machine-washed using chlorine bleach (50-150ppm) or
an intermediate level disinfectant, such as ProTech
1
. Bleach and
disinfectant should be used according to the manufacturer’s
instructions. To determine the amount of bleach or disinfectant to
use, determine the amount of water in the washer and then
follow the manufacturer’s dilution instructions. Soak the coverlet
in the disinfectant or bleach during the wash cycle. Rinse
thoroughly in clean water and dry before use.
NOTE! 2.5 ounces of bleach per 10 gallons of water is
approximately 100ppm of available chlorine.
CAUTION! Heat will severely damage the material. DO NOT dry
the coverlet using the “heat” cycle. Air dry, or use a “non-heat”
dry cycle, e.g., air fluff.
1
ProTech® is a tuberculocidal disinfectant cleaner and a registered trademark of Central Solutions,
Inc.