Dynatron 150plus User manual

SERVICE MANUAL
Dynatron®150plus

Dynatron®150plus
ii
CAUTION: Federal law restricts this device to sale by or on the order of a physician,
chiropractor, physical therapist, or dentist licensed by the law of the state in which
said person practices to use or order the use of the device.
IMPORTANT: Before treating a patient with the Dynatron 150plus, read the
Contraindications, Warnings, and Precautions in this manual, and observe them
whenever treating a patient with this device.
INDICATIONS FOR ULTRASOUND USE:
Ultrasound therapy is intended to generate deep heat within body tissues for the
treatment of selected medical conditions such as relief of pain, muscle spasms, and
joint contractures, but not for the treatment of malignancies. (21 CFR 890.5300)
Dynatron 150plus Service Manual
Revised June 2004
© Copyright October 1996
Dynatronics Corporation
7030 Park Centre Drive
Salt Lake City, UT 84121
[phone] - [phone]
ALL RIGHTS RESERVED
Rev. 06-04_01

Dynatron®150plus
Table of Contents
iii
Table of Contents
Page
Introduction to the Dynatron 150plus..........................................................................................1
About Ultrasound.......................................................................................................................1
Installation and Features...............................................................................................................3
Unpacking..................................................................................................................................3
Standard Accessories .................................................................................................................3
Dynatron 150plus Physical Features..........................................................................................4
Soundheads ................................................................................................................................6
Treatment Instructions..................................................................................................................7
Soundhead Warming..................................................................................................................7
Turn Soundhead Warming OFF / ON........................................................................................8
Treatment Setup.........................................................................................................................8
Modify a Treatment in Progress ................................................................................................9
Patient Coupling ......................................................................................................................10
Ultrasound Coupling Bar Graph..............................................................................................10
Head Temperature Bar Graph..................................................................................................11
Head Temperature Hot.............................................................................................................12
No Soundhead..........................................................................................................................12
Display Watts or Watts/cm2....................................................................................................13
Restore Factory Defaults .........................................................................................................13
Battery Operation........................................................................................................................15
Battery Requirements ..............................................................................................................16
Battery Life..............................................................................................................................16
Ultrasound With Electrical Stim Input .....................................................................................17
Ultrasound General Information ...............................................................................................19
and Usage Cautions......................................................................................................................19
Selecting the Appropriate Soundhead......................................................................................19
Penetration of Ultrasound Waves ............................................................................................20
Types of Delivery ....................................................................................................................21
Treatment Time........................................................................................................................22
Treatment Intensity..................................................................................................................22
Frequency of Treatment...........................................................................................................22

Dynatron®150plus
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Continuous Verses Pulsed Ultrasound.....................................................................................23
Duty Cycle ...............................................................................................................................23
Patient Susceptibility ...............................................................................................................23
Potential for Burns or Periosteal Pain......................................................................................23
Output Power ...........................................................................................................................24
Coupling...................................................................................................................................24
Usage Cautions - Combination Treatments.............................................................................25
Contraindications, Warnings, Precautions ...............................................................................27
Contraindications.....................................................................................................................27
Precautions...............................................................................................................................28
Warnings..................................................................................................................................28
Usage Cautions - Combination Treatments.............................................................................28
Safety Features of the Dynatron 150plus.................................................................................28
Technical Specifications ..............................................................................................................29
Environmental Conditions .......................................................................................................29
Dynatron 150plus Care and Cleaning Instructions..................................................................30
Suggested Maintenance Schedule............................................................................................30
Routine Calibration Inspections...............................................................................................31
Authorized Service Center.......................................................................................................31
Definition of Symbols..............................................................................................................32
Equipment Classification.........................................................................................................32
Disposal of Equipment and Accessories..................................................................................32
Ultrasound Regulation ................................................................................................................33
Beam Profile .................................................................................................................................35
Enter Soundhead Parameters.....................................................................................................37
New Smart Heads ....................................................................................................................37
Using Older Model Soundheads..............................................................................................37
Calibration Procedure.................................................................................................................41
Problem Solving ...........................................................................................................................45
Soundhead Temperature Too Hot............................................................................................45
Cooling the Soundhead............................................................................................................45
Whirlpool Treatments..............................................................................................................45
Soundhead Temperature Too Cold..........................................................................................46
Error Message in the Display...................................................................................................46
Sending a Unit in for Repair.......................................................................................................49

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Table of Contents
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Return Authorization ...............................................................................................................49
Why the Information is Necessary...........................................................................................49
Packaging and Shipping of Replacement Parts .......................................................................50
Medical Device Reporting Requirements..................................................................................51
Schematics and QC Check Lists.................................................................................................51

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Dynatron®150plus
Introduction
1
Introduction to the Dynatron 150plus
Your new Dynatron 150plus gives you a wide range of treatment capabilities, yet it is
compact, convenient and simple to use with its user-friendly touch panel for easy
treatment setup. Here are some highlights of your Dynatron 150plus:
• Patented Multi-Frequency Ultrasound. With the Dynatron 150plus you can
select three different frequencies without changing the soundhead. The
2 cm2, 5 cm2, and 10 cm2soundheads each operate at 1, 2, and 3 MHz.
• Customizable Duty Cycle. Select from 10, 20, 50 percent, and Continuous
duty cycle options.
• Head Warming. When the device is ON but idle, the soundhead is warmed
automatically. Head warming may be turned OFF, if it is not desired.
• Coupling Sensing. If coupling becomes inadequate during a treatment, the
displays flash and an audible beep is sounded to notify the user that coupling
should be corrected. If your device is version 1.04 or above, a bar graph will
appear.
• Modify Treatments In Progress. You can modify treatment time, power,
frequency, or duty cycle while a treatment is in progress. It is not necessary
to stop the treatment.
• Portable. The Dynatron 150plus is small and light-weight making it readily
portable. An optional carry case is available from your Dynatronics dealer.
• Optional Battery Operation. The device may be operated with power
supplied by an optional battery, offering greater flexibility in treatment sites.
• Two-Year Warranty on the device and soundheads.
This manual provides instructions for Ultrasound setup and treatment with the
Dynatron 150plus. Please read this manual, particularly the section on
contraindications, warnings, and precautions, before treating a patient with this
device.
About Ultrasound
Ultrasound therapy is supported by a wealth of scientific literature. Channeling
sound waves through muscle, nerve, bone, and connective tissue has been
documented to aid in reducing pain, muscle spasms, and joint contractures. The

Dynatron®150plus
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“Ultrasound Usage “Cautions” in this manual provide some general guidelines for
Ultrasound treatment to help ensure you deliver safe and effective treatments to your
patients. Further information about Ultrasound may be obtained from published
medical literature.
Before using your Dynatron 150plus, be sure to read the operating instructions,
contraindications, warnings, and precautions contained in this manual.

Dynatron®150plus
Installation and Features
3
Installation and Features
Unpacking
When you receive the unit, immediately unpack it and all accessories and check for
possible damage, obvious or concealed. In case of damage, immediately notify the
carrier and take any steps necessary to file a claim for the damage sustained. Do not
destroy or discard the shipping carton. The carton should be reused if the device must
be shipped for any reason. The carton is specially designed to protect the unit from
shipping damage. Improper packaging of the unit during transport can result in damage
and invalidate the warranty.
Complete the warranty registration found at the back of this manual and return it
to Dynatronics within 30 days of purchase. This is essential to insure you are not
billed for services that are covered by the warranty policy.
Connect the AC power cord, which is equipped with a hospital grade UL listed plug, to
a properly grounded 110/120V 60 Hz AC outlet. The device will automatically switch
to 220/240V 50 Hz when connected to a power source with that voltage. Do not place
the cord or the device in a place where the cord could be tripped over or accidentally
pulled out of its socket during a treatment.
Read the operating instructions and the contraindications, warnings and precautions in
this manual before proceeding with a treatment.
Standard Accessories
Qty Description
1 Dynatron 150plus unit
1 Power cord
1 Operator’s manual
1 Application manual
1 Sample bottle Ultrasound gel
1 Applicator soundhead
Optional Accessories
Additional soundheads are available in sizes, 2 cm2, 5 cm2, or 10 cm2.
Rechargeable battery pack
Pin-to-banana adapter for stim input
Ultrasound coupling gel

Dynatron®150plus
Installation & Features 4
Dynatron 150plus Physical Features
Before operating the Dynatron 150plus, acquaint yourself with the control panel by
reviewing the illustration. Each of the features is numbered in the diagram, and a
description for each feature follows.
1
Dynatronics
FREQ
4
5
9
15
3
1 MHz
3 MHz
DUTY
CYCLE
POWERTIME
PAUSE
STOP
START
10%
50%
20%
CONT
1210 11
7
6
8 13
14
16
2
e
2 MHz
Dynatron 150plus Control Panel
1. POWER OFF/ON SWITCH: Located on the back of the unit. This switch is labeled
“1” and “0”. Set the switch to “1” for ON; set the switch to “0” for OFF.
2. ELECTRICAL STIM INPUT
JACK: This jack is used for
combining Ultrasound with
electrical stimulation. The
output end of a lead connected
to a Dynatron electrotherapy
device may be plugged into this
jack. The current from the stim
device is delivered through the
soundhead.
3. BATTERY INPUT: This input
located on the back of the
device provides connection to Dynatron 150 plus Input Jack

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Installation and Features
5
an optional battery power source. Only a Dynatronics-approved battery may be
used.
4. TIME DISPLAY: Treatment time is displayed here.
5. TIME SELECTION: UP/DOWN ARROW keys are used to set or change the
treatment time. Press the UP ARROW key to increase time, and press the DOWN
ARROW key to decrease the treatment time.
6. FREQUENCY KEY: This key is pressed to select the desired frequency during
treatment setup or while a treatment is in progress. Select from 1, 2 or 3 MHz.
Continue pressing the FREQUENCY key until the desired frequency is selected.
7. FREQUENCY DISPLAY: LED lights indicate the frequency that is chosen for the
current treatment. Selection is made by pressing the FREQUENCY key.
8. DUTY CYCLE KEY: This key is pressed to select the desired duty cycle during
treatment setup or while a treatment is in progress. Select from 10, 20, 50 percent or
Continuous duty cycle. Continue pressing the DUTY CYCLE key until the desired
duty cycle is selected.
9. DUTY CYCLE DISPLAY: LED lights indicate the duty cycle that is chosen for the
current treatment. Selection is made by pressing the DUTY CYCLE key.
10. START: When this key is pressed the selected treatment starts. The timer begins
counting down and output from the soundhead is started.
11. STOP: This key is pressed to stop the output to the applicator head, resets the timer
to zero, and ends the treatment.
12. PAUSE: This key is pressed to pause an Ultrasound treatment in progress. When
the treatment is paused, the treatment timer is stopped, an LED on the PAUSE key is
lighted and the output power is stopped. Pressing the START key or the PAUSE
key will resume the treatment; the timer resumes counting down, power is delivered
to the soundhead, and the PAUSE LED light will be off.
13. POWER DISPLAY: This display shows the power selected for the current
treatment. Power is displayed in watts per square centimeter (WATT/cm2).
WATT/cm2is the intensity of the Ultrasound at the head surface; it is the total watts
divided by the effective radiating area of the head. The display may be changed to
WATTS, if desired, by pressing both the UP and DOWN POWER DISPLAY keys
at the same time; the decimal in the display will flash continuously when displaying
WATTS. The decimal remains solid when displaying WATT/cm2.
14. POWER SELECTION KEYS: These UP/DOWN ARROW keys are used to set or
change the POWER setting for a treatment. Press the UP ARROW key to increase
power, and press the DOWN ARROW key to decrease power.
15. ULTRASOUND OUTPUT JACK: The soundhead plugs into this jack for
Ultrasound therapy.

Dynatron®150plus
Installation & Features 6
16. SOUNDHEAD HOLDER: The soundhead is placed in this holder when not in use.
Soundheads
Soundheads for the Dynatron 150plus are available in 2 cm2, 5 cm2, or 10 cm2sizes.
Each soundhead operates at 1, 2, and 3 MHz. The soundheads are waterproof allowing
therapy to be administered in water, if desired. Information regarding calibration of
soundheads is provided later in this manual.

Dynatron®150plus
Treatment Instructions
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Treatment Instructions
CAUTION: Use of controls, adjustments or performance of procedures other than
those specified herein may result in hazardous exposure to ultrasonic energy.
WARNING
• ALWAYS keep the applicator soundhead in constant motion.
• ALWAYS keep the soundhead properly coupled to the patient’s skin or submerged under
water when intensity is turned ON.
• Read and observe the contraindications, warnings, and precautions provided in this manual.
• Be sure to read all instructions given in this manual before treating a patient.
Make sure a soundhead is firmly plugged into the device before turning ON the
device. When changing to a different size soundhead, turn the machine OFF first,
remove the soundhead, plug in the desired soundhead, then turn the machine ON
again.
Press the power switch on the back of the device to turn on the Dynatron 150plus. It
is recommended that the unit remain ON throughout the day if it is used regularly. If
the device is being powered by the optional battery, unplug the battery or turn the
battery OFF after treatment has ended to save battery power.
When the unit is first powered ON, it goes through an automatic self-test and head
check procedure. After the calibration procedure is completed, the device is available
for treatment.
To set up a treatment, press keys on the keypad to select time, duty cycle, frequency,
and power. Treatment settings may be modified at any time during a treatment.
Before treating a patient with the Dynatron 150plus, you should be familiar with all
the features of the device in order to deliver treatments easily, effectively, and safely.
Soundhead Warming
When the Dynatron 150plus is powered ON,
it automatically enters a default head
warming mode. During this mode the
soundhead should remain in its holder as a
small amount of ultrasound output is emitted
from the soundhead. While warming is
taking place, a small indicator light is seen at
the top of the TIME display.
The warming feature turns ON and OFF
Head Warming Indicator.

Dynatron®150plus
Treatment Instructions 8
automatically as needed to maintain a comfortable temperature. The soundhead
warming mode is automatically stopped during a treatment, and resumes
automatically as needed after a treatment has ended.
Turn Soundhead Warming OFF / ON
If you do not wish to use the head warming feature, you can turn the feature OFF
with a simple key press:
• Press both the PAUSE and the STOP keys simultaneously to turn soundhead
warming OFF or to turn it ON again. These key presses are only necessary if you
want to change the current state of head warming.
The head warming setting you select whether OFF or ON is saved and will apply to
the device whenever it is used until you change the setting again.
Treatment Setup
CAUTION: Set intensity to MINIMUM POWER before pressing START.
The following is the sequence for setting up a treatment.
1. Set Time: Press the UP/DOWN ARROW keys to set the time for the treatment.
When treatment starts, a countdown timer displays the time remaining in the
treatment.
2. Set Duty Cycle: Press the DUTY CYCLE TOGGLE key one or more times to
select the desired duty cycle: Continuous, 50, 20, or 10 percent. Your selection
is indicated by a green light next to the selected option.
3. Choose Frequency: Press the FREQ key to select the frequency (1, 2 or 3 MHz).
Your selection is indicated by a green light next to the selected option.
4. Set Power: Using the UP/DOWN ARROW keys, enter the power in watts per
square centimeter (W/cm2).
Valid ranges for each soundhead size are found in the Technical Specifications
section of this manual.
For patient safety and comfort, it is recommended that you start with 0.1 W/cm2 ,
then increase power to the desired level after the treatment begins.
5. Coupling Agent: Be sure to use a coupling agent such as a gel or lotion designed
for Ultrasound usage, and maintain good coupling throughout the treatment (see

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Treatment Instructions
9
Ultrasound Usage Cautions in this manual). Do not hold the soundhead in the air,
as this will cause the soundhead to overheat. The device provides coupling
sensing to help you know when coupling is not adequate. This feature is
discussed later in this manual.
6. Press START: When you press START, power is delivered to the soundhead
and the treatment timer begins counting down. When the timer reaches zero,
output power is stopped.
7. Treat: Administer the treatment using your preferred Ultrasound protocol.
Modify any treatment parameters during the treatment, if desired. Maintain good
coupling throughout the treatment.
8. Stop Treatment: At any time during the treatment you can stop the treatment by
pressing STOP on the keypad. When STOP is pressed during a treatment, the
timer goes to zero, the output power is stopped, and a chime sounds. If you press
PAUSE during the treatment, the output stops and the timer stops counting down,
but the treatment may be resumed by pressing PAUSE again or START.
IMPORTANT
For patient safety and comfort, it is recommended that you start with 0.1 W/cm2,
then increase power to the desired level after the treatment begins.
Modify a Treatment in Progress
The following parameters may be modified during a treatment:
• Frequency. Press the FREQUENCY TOGGLE key.
• Duty Cycle. Press the DUTY CYCLE TOGGLE key.
• Time. Press the UP/DOWN ARROWS to increase or decrease time.
• Power. Press the UP/DOWN arrows to increase or decrease power.
• Display Power in WATTS or WATTS/cm2. Press both the UP and DOWN
POWER DISPLAY keys simultaneously to change the display. When displaying
power in WATTS, the decimal in the POWER DISPLAY will flash. When
displaying power in WATTS/cm2, the decimal remains solid.
Pressing the PAUSE key will temporarily stop a treatment in progress; this stops both
the timer and the output. To resume the treatment, press the START or PAUSE key.
Pressing the STOP key terminates the treatment. The output is stopped and the
treatment timer is set to zero.

Dynatron®150plus
Treatment Instructions 10
Patient Coupling
The Dynatron 150plus provides the feature of PATIENT COUPLING SENSING
which senses the coupling between the soundhead and the patient to ensure proper
delivery of the Ultrasonic therapy (this feature is in effect during CONTINUOUS
duty cycle only and works best at 1.0 W/cm2or greater). Coupling (contact between
the soundhead and the treatment site) may be provided either via a coupling agent
such as a gel or lotion, or in water, as with underwater treatments. Any material used
as a coupling agent must be highly conductive of ultrasonic waves. Air is a very poor
conductor of ultrasonic waves. Therefore, avoid allowing any air between the
soundhead and the treatment area.
During the treatment the soundhead should be moved continuously covering an area
approximately twice the size of the soundhead in area. The full surface of the
soundhead should maintain contact with the patient’s skin (except with underwater
treatments). If all or part of the soundhead is not touching the patient, coupling may
not be adequate and the patient will not receive the intended dosage of the ultrasonic
wave and/or the soundhead may warm up very quickly.
Ultrasound Coupling Bar Graph
APPLIES ONLY TO VERSIONS 1.04 AND ABOVE
During an Ultrasound treatment, you can display a bar graph to indicate coupling;
that is, whether adequate contact is being maintained between the soundhead and the
patient’s skin. The bar graph uses the eight segments in the top half of the TIME
DISPLAY, with eight lighted segments indicating best conductance, and one lighted
segment indicating poorest conductance. In the illustration below, eight of the eight
segments are lighted indicating best coupling.
Coupling Bar Graph: Eight lighted segments indicate good coupling between patient and
soundhead.

Dynatron®150plus
Treatment Instructions
11
To correct poor coupling make sure you are using an adequate amount of Ultrasound
conductive gel and the face of the soundhead is making full contact with the patient’s
skin.
To turn-on the ULTRASOUND COUPLING BAR GRAPH function, press PAUSE
and the POWER DOWN ARROW keys simultaneously. Repeat the action to toggle
between ON and OFF. Visible in the TIME DISPLAY window: CP1 indicates the
bar graph is ON, while CP0 indicates the bar graph is OFF.
To display the BAR GRAPH, displayed on the previous page, press the START key
and the TIME UP ARROW key simultaneously. The treatment time continues
counting down while the bar graph is displayed unless the treatment is paused for any
reason. You may alternate (toggle back and forth) between the BAR GRAPH and the
treatment TIME by pressing the PAUSE and POWER DOWN ARROW keys
simultaneously.
When you no longer require the bar graph display, press the START key to turn OFF
the BAR GRAPH and redisplay the treatment TIME. Pressing the TIME UP or
DOWN ARROW key will also change the display from bar graph to the treatment
time display; however, pressing these keys will change the treatment time as well.
Changes to the treatment settings including frequency, duty cycle, and size of
soundhead will cause some variance in the graph.
Head Temperature Bar Graph
During an Ultrasound treatment, you can view a graph showing the relative
soundhead temperature by pressing START and the TIME DOWN ARROW keys
simultaneously. As shown in the illustration below, the TIME DISPLAY shows the
letter “H” followed by a bar graph with from 1 to 6 segments lighted. The more
segments displayed, the hotter the soundhead. This display does not provide an
actual temperature reading, but does give a visual indication if the soundhead is
becoming too hot. To return to the treatment time display, press the START key.
POWER
TIME START
STOP
PAUSE
Head Temperature Bar Graph
Press the START and the Time DOWN arrow keys simultaneously
during an ultrasound treatment to view a graph showing
relative head temperature. Press the START key to return to the
treatment time display.
Temperature Bar Graph. During an Ultrasound treatment press START and the TIME Down Arrow keys
simultaneously to view a bar graph representing the soundhead temperature..

Dynatron®150plus
Treatment Instructions 12
“HOT” Error: During an Ultrasound treatment, if the
soundhead becomes too hot, the “HOT” error message
is displayed and the treatment is paused until the
soundhead is cooled.
Note: Pressing the Time UP or DOWN ARROW keys will return the display from
bar graph to the treatment time display. However, pressing these keys will change
the treatment time as well.
Head Temperature Hot
If the temperature reaches the
maximum level allowed, the treatment
is automatically PAUSED, the output
power is stopped, the treatment time
stops counting down, and the POWER
INTENSITY display shows the error
message “HOT”. When this condition
occurs, the soundhead must be cooled
down before the treatment can resume
Once the soundhead is cooled, press
PAUSE or START to resume the
treatment. If the soundhead is still too hot, the device will not allow you to continue.
The soundhead will cool slowly if placed in the soundhead holder or if held exposed
to the air. Larger soundheads take longer to cool than smaller heads. To resume the
treatment right away, you can place the soundhead in cool/room temperature water to
cool the head more quickly.
NEVER USE ICE OR ICE PACKS TO COOL THE SOUNDHEADS as this is likely to
cause thermal shock to the electronic components of the soundhead and may necessitate
a costly repair. Heads damaged by thermal shock are not covered by the warranty.
To prevent overheating of the soundhead, maintain good coupling throughout the
treatment. For direct coupling, you may need to apply more conductive gel or lotion
during the treatment to achieve better coupling.
You can reduce the power during the treatment if you are treating an area where it is
difficult to obtain good coupling.
No Soundhead
If the device cannot detect a soundhead
during setup or delivery of an Ultrasound
treatment, the error message “HEAD” is
displayed in the TIME DISPLAY. A
number from 0 - 3 will simultaneously
appear in the POWER DISPLAY window.
If this error occurs, check to be sure the
soundhead is firmly plugged into its
connector. If you are unable to clear the
message by reconnecting the soundhead,
contact Dynatronics’ customer service department for assistance.
POWER-INTENSITY
START
STOP
PAUSE
"HOT" ERROR - Soundhead Too Hot
HEAD” Error. This error message indicates the
soundhead is not plugged in or for some reason is
not being detected by the device.
TIME START
STOP
PAUSE
"HEAD" ERROR - No Soundhead

Dynatron®150plus
Treatment Instructions
13
Display Watts or Watts/cm2
Power for the Dynatron
150plus may be displayed as
WATTS or WATTS/cm2. The
default setting for power is
WATTS/cm2, but you may
select the display you prefer at
any time before or during a
treatment.
• To change the power display,
press both the POWER UP
and DOWN arrow keys at the
same time. To change back,
just press both keys again,
simultaneously.
• The power display setting you choose remains in effect until you change it again.
• You can tell when you have selected WATTS or WATTS/cm2by the decimal in
the POWER DISPLAY window.
- A steadily-lighted decimal means the power is displayed in WATTS/cm2.
- A blinking decimal means the power is displayed in WATTS.
Restore Factory Defaults
The Dynatron 150plus has the following default settings:
• Soundhead Warming: ON
• Coupling Sensing: OFF
• Power Display: Watts/cm2
Each of these settings may be changed by the user (instructions are provided earlier
in this section). If you have changed the settings for this device, but would like to
return ALL the default settings to those that were set at the factory, do the following:
1. Turn the machine OFF.
2. Press and hold the START key while turning the machine on. The machine will
display “56” in the TIME DISPLAY window and “FP” in the POWER DISPLAY
window followed by a single beep indicating that the parameters have been reset.
Press both the UP and DOWN
arrow keys at the same time to
change the display.
POWER
PAUSE
STOP
START
A non-blinking decimal = Power displayed in Watt/cm 2
A blinking decimal = Power displayed in Watts
Dynatron 150plus Power Display. You can view
power in either WATTS/cm2or Watts.

Dynatron®150plus
14