Dynatronics Dynatron 850 Plus User manual

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SERVICE MANUAL
Dynatron®850plus &
Dynatron®550plus

Dynatron®850plus & 550plus
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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 850plus or the Dynatron
550plus, see the “Contraindications, Warnings, and Precautions” in this manual.
INDICATIONS FOR USE:
Muscle stimulation therapy delivered by the Dynatron 850plus and 550plus is indicated
for the following uses:
1. relaxation of muscle spasm;
2. prevention or retardation of disuse atrophy;
3. increasing local blood circulation;
4. muscle re-education;
5. immediate postsurgical stimulation of calf muscles to prevent venous thrombosis; and
6. maintaining or increasing range of motion.
Interferential, premodulated, high volt, and microcurrent therapy are indicated for
providing temporary relief of chronic intractable pain.
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® 850plus and Dynatron® 550plus Service Manual
Revised June 2004
© Copyright 1997
Dynatronics Corporation
7030 Park Centre Drive
Salt Lake City, UT 84121
[phone] [phone]
ALL RIGHTS RESERVED

Dynatron®850plus & 550plus
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Table of Contents
Section I
Introduction I
Introduction to the Dynatron 850plus™ and 550plus™ ........................................................................ 2
New Features.......................................................................................................................................... 2
Treatment Options.................................................................................................................................. 3
Simplified Setup..................................................................................................................................... 4
Before You Treat a Patient..................................................................................................................... 4
How to Use This Manual........................................................................................................................ 4
Installation and Features............................................................................................................................ 5
Unpacking .............................................................................................................................................. 5
Standard Accessories.............................................................................................................................. 5
Soundheads and Probes.......................................................................................................................... 6
Accessories............................................................................................................................................. 6
Dynatron 850plus and Dynatron 550plus Physical Features.................................................................. 7
Instructions for Using Toggle Keys ..................................................................................................... 13
Time and Power Displays..................................................................................................................... 15
Ultrasound Heads (Dynatron 850plus only)......................................................................................... 15
Microcurrent Probes (optional accessory)............................................................................................ 16
High Volt Probe (optional accessory) .................................................................................................. 17
Quick Reference of Special Key Presses ................................................................................................. 18
Section II
Operation and Treatment Instructions
General Operating Instructions............................................................................................................... 20
Power On/Off ....................................................................................................................................... 20
Basic Treatment Setup.......................................................................................................................... 20
Conductance Bar Graph ....................................................................................................................... 21
“LEAD” Warning - No Patient Current ............................................................................................... 22
Interferential / Premodulated Instructions............................................................................................. 24
Basic Interferential / Premod Setup...................................................................................................... 24
Detailed Interferential / Premodulated Setup ....................................................................................... 25
Interferential / Premodulated Default Settings ..................................................................................... 28

Dynatron®850plus & 550plus
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Biphasic / Russian Instructions ................................................................................................................29
Basic Biphasic / Russian Setup.............................................................................................................30
Detailed Biphasic / Russian Setup ........................................................................................................30
Biphasic / Russian Default Settings......................................................................................................33
High Volt Instructions...............................................................................................................................35
Set Up High Volt Treatment with Electrodes .......................................................................................35
Set Up High Volt Treatment with Optional Probe................................................................................36
Basic High Volt Setup ..........................................................................................................................37
Detailed High Volt Setup......................................................................................................................37
High Volt Default Settings....................................................................................................................41
Microcurrent Instructions ........................................................................................................................42
Basic Microcurrent Setup .....................................................................................................................42
Microcurrent Treatment Time...............................................................................................................43
Detailed Microcurrent Setup.................................................................................................................43
Audio Tone ...........................................................................................................................................46
Microcurrent Default Settings...............................................................................................................46
How To Use Microcurrent Probes ........................................................................................................46
Ultrasound Instructions ............................................................................................................................48
Soundhead Warming.............................................................................................................................48
Turn Soundhead Warming Off / On .....................................................................................................49
Basic Ultrasound Setup.........................................................................................................................49
Detailed Ultrasound Setup ....................................................................................................................49
Ultrasound Default Settings..................................................................................................................51
Patient Coupling ...................................................................................................................................51
Poor Coupling.......................................................................................................................................52
Ultrasound Coupling Bar Graph ...........................................................................................................52
Head Temperature Hot..........................................................................................................................53
Head Temperature Bar Graph...............................................................................................................54
Display Watts or W/cm2.......................................................................................................................54
Combination Therapy Instructions .........................................................................................................56
Comboplus™ ........................................................................................................................................56
Stim Through the Soundhead................................................................................................................57
Combination Therapy Setup .................................................................................................................58
Modify Treatment .................................................................................................................................60
Combination Default Settings...............................................................................................................61

Dynatron®850plus & 550plus
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Simultaneous Treatments......................................................................................................................... 62
Set Up A Second Treatment................................................................................................................. 62
Modify Simultaneous Treatments ........................................................................................................ 63
Stop One Treatment.............................................................................................................................. 63
Setting Defaults ......................................................................................................................................... 64
Save New Defaults ............................................................................................................................... 64
Restore Factory Defaults ...................................................................................................................... 65
Interferential Default Settings .............................................................................................................. 65
Premodulated Default Settings............................................................................................................. 65
Russian / Biphasic Default Settings ..................................................................................................... 65
High Volt Default Settings................................................................................................................... 66
Microcurrent Default Settings .............................................................................................................. 66
Ultrasound Default Settings ................................................................................................................. 66
Combination Default Settings .............................................................................................................. 66
Battery Operation ..................................................................................................................................... 67
Battery Requirements ........................................................................................................................... 68
Battery Life........................................................................................................................................... 68
Section III
General Modality Information
Interferential and Premodulated Therapy ............................................................................................. 70
Interferential (Quadpolar) Therapy ...................................................................................................... 70
Premodulated (Bipolar) Therapy.......................................................................................................... 70
Target.................................................................................................................................................... 71
Why Is Target Better? .......................................................................................................................... 71
Sweep ................................................................................................................................................... 72
Interferential Electrode Placement ....................................................................................................... 72
Russian / Biphasic Therapy...................................................................................................................... 73
Russian Stimulation.............................................................................................................................. 73
Biphasic Stimulation ............................................................................................................................ 73
Biphasic / Russian Parameters.............................................................................................................. 73
High Volt Therapy .................................................................................................................................... 76
High Volt Therapy with Electrodes...................................................................................................... 76
High Volt with Optional Probes........................................................................................................... 76
High Volt Waveform............................................................................................................................ 76
High Volt Settings................................................................................................................................ 76

Dynatron®850plus & 550plus
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Microcurrent Therapy ..............................................................................................................................78
Microcurrent Therapy with Electrodes .................................................................................................78
Microcurrent Therapy with Probes .......................................................................................................78
Microcurrent Waveforms......................................................................................................................78
Microcurrent Settings............................................................................................................................78
Ultrasound Therapy..................................................................................................................................79
About Ultrasound..................................................................................................................................79
SmartHeads...........................................................................................................................................79
Patient Coupling ...................................................................................................................................79
Soundhead Temperature .......................................................................................................................80
Section IV
Contraindications, Warnings, and Precautions
Contraindications, Warnings, & Precautions for Interferential, Premodulated, Russian, Biphasic, and
High Voltage Pulsed Stimulation .............................................................................................................82
Contraindications ..................................................................................................................................82
Warnings...............................................................................................................................................82
Precautions............................................................................................................................................83
Treatment Setup Warnings ...................................................................................................................84
Adverse Effects.....................................................................................................................................84
Use Only Dynatronics Accessories With This Device .........................................................................84
Contraindications, Warnings, & Precautions for Microcurrent Treatment........................................85
Indications for Use................................................................................................................................85
Contraindications ..................................................................................................................................85
Warnings...............................................................................................................................................85
Precautions............................................................................................................................................86
Adverse Reactions ................................................................................................................................86
Contraindications, Warnings, & Precautions for Ultrasound Treatment ...........................................87
Contraindications ..................................................................................................................................87
Precautions............................................................................................................................................88
Warnings...............................................................................................................................................88
Electrotherapy Usage Cautions................................................................................................................89
Carbon Electrodes.................................................................................................................................90
Self-Adhesive Electrodes......................................................................................................................91
Combination Treatment Usage Cautions ..............................................................................................92
Lead Wires............................................................................................................................................92
Test Leads .............................................................................................................................................93

Dynatron®850plus & 550plus
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Current Limit........................................................................................................................................ 93
Current Limit Warning......................................................................................................................... 94
Microcurrent Usage Cautions.................................................................................................................. 95
Ultrasound Usage Cautions...................................................................................................................... 96
Applicator Movement........................................................................................................................... 96
Patient Susceptibility............................................................................................................................ 96
Potential for Burns................................................................................................................................ 96
Output Power........................................................................................................................................ 97
Penetration of Ultrasound Waves......................................................................................................... 97
Coupling............................................................................................................................................... 97
Section V
Ultrasound Technical Information
Ultrasound Regulation............................................................................................................................ 100
Beam Profile ............................................................................................................................................ 101
Enter Soundhead Parameters................................................................................................................ 104
New SmartHeads™ ............................................................................................................................ 104
Using Older Model Soundheads With the 50 Series Plus .................................................................. 104
Calibration Procedure............................................................................................................................ 106
Problem Solving ...................................................................................................................................... 109
Soundhead Temperature Too Hot ...................................................................................................... 109
Cooling the Soundhead ...................................................................................................................... 109
Whirlpool Treatments......................................................................................................................... 109
Soundhead Temperature Too Cold..................................................................................................... 110
No Soundhead .................................................................................................................................... 110
Other Error Messages in the Display.................................................................................................. 110
Section VI
Technical Information
General Specifications ............................................................................................................................ 114
Dynatron 850plus and 550plus Specifications ................................................................................... 114
Stim Specifications............................................................................................................................. 114
Microcurrent Specifications ............................................................................................................... 114
High Volt Specifications .................................................................................................................... 115
Ultrasound Specifications (Dynatron 850plus only) .......................................................................... 115

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Environmental Conditions ..................................................................................................................115
Safety Features of the Dynatron 850plus and 550plus .......................................................................115
Care and Cleaning Instructions...........................................................................................................116
Suggested Maintenance Schedule.......................................................................................................116
Routine Ultrasound Calibration Inspections (Dynatron 850plus only)...............................................117
Software Updates................................................................................................................................118
Returning a Unit for Repair ................................................................................................................118
Definition of Symbols.........................................................................................................................119
Equipment Classification....................................................................................................................119
Disposal of Equipment and Accessories.............................................................................................119
Additional Technical Information Available (for Technicians Only).................................................120
FDA Compliant Electrodes and Lead Wires.......................................................................................120
Medical Device Reporting Requirements..............................................................................................121
Reporting any Incident of Patient Discomfort ....................................................................................121
Section VII
Service
Processor Interaction ..............................................................................................................................124
Processor Interaction with the Keyboard and Displays ......................................................................124
Processor Interaction with Oscillators ................................................................................................124
Processor Interaction with the Output Jacks.......................................................................................124
Processor Control of Output Waveforms............................................................................................124
Basic Trouble Shooting Techniques.......................................................................................................125
Hands-On Testing Pads and Leads .....................................................................................................125
Installing Software Updates....................................................................................................................126
Installing Replacement Parts..................................................................................................................126
Section VIII
Schematics and QC Check Lists

Dynatron®850plus & 550plus
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Section I
Introduction

Dynatron®850plus & 550plus
Introduction 2
Introduction to the
Dynatron 850plus™ and 550plus™
The Dynatron 850plus and Dynatron 550plus offer the practitioner a wide range of treatment
options in a single device. Both devices provide interferential and premodulated therapy,
high voltage pulsed stimulation, Russian and biphasic stimulation, and microcurrent. The
850plus also includes ultrasound and combination therapy.
The devices include the advantages of earlier Dynatronics models, such as customizable
treatments with convenient setup. In addition, these units are smaller and lighter in weight
than earlier models and now offer the option of battery operation, making the devices truly
portable. One additional channel is now dedicated to high volt therapy, allowing a greater
variety of simultaneous treatments. The manufacturer’s warranty for these devices is now
two years (see full warranty details at the back of this manual).
This manual provides operator information and instructions for both of these models. The
sections that discuss ultrasound and combination treatments apply only to the Dynatron
850plus model. All other sections of this manual apply to both devices. Sections of this
manual that apply only to the Dynatron 850plus are clearly marked.
New Features
For models having software greater than Rev. 1.01 or later, the following new features have
been added (effective January 1998).
• Conductance Bar Graph. A graphical representation of conductivity during and
interferential, premodulated, or microcurrent treatment.
• Ultrasound Coupling Bar Graph. Shows soundhead coupling during an ultrasound
treatment.
• Soundhead Temperature Bar Graph. Indicates when soundhead temperature is too hot
during a treatment.
• “Lead” warning. A new warning displayed if the device detects an open circuit,
indicating no patient current is being delivered and the treatment setup must be inspected.
• New warnings notifying the user when the soundhead is too hot, or when the soundhead
is not detected by the device
These new features are described in greater detail in the treatment instructions later in this
manual. The determine the software revision level for the Dynatron device, power the device
on and observe the number shown in the Time display at the end of the device’s startup
routine.