Restorative Therapies
RT300 User Guide Issue 31 March 2012
User Guide
74 Pages
Preview
Page 1
RT300 User Guide
Blank
Clinician notes to patient
Blank
RT300 User Guide
FOR THE USA Caution: Federal law restricts this device to sale by or on the order of a practitioner licensed by the law of the State in which he/she practices to use or order the use of the device.
Part Number: LB100108 Issue 31 [March 2012]
Restorative Therapies Inc Baltimore, MD 21224 USA Telephone: 1-800-609-9166 Fax: 1-410-878-2466 www.restorative-therapies.com Restorative Therapies Inc ABN 28 131 719 661 Lane Cove, NSW 2066 Australia Telephone: 02 8006 0939 Fax: 02 8324 6422 www.restorative-therapies.com Copyright 2005-2012 Restorative Therapies Inc
All rights reserved. No part of this document covered by the copyright herein may be reproduced or copied by any means or in any form without the written consent of Restorative Therapies Inc. Any software furnished under the license may be used or copied only in accordance with the terms set forth in the license agreement contract. Restorative Therapies Inc reserves the right to amend, modify, or revise all or part of this document without notice and shall not be responsible for any loss, cost, or damage, including but not limited to consequential damage, caused by the reliance of the information contained herein. Restorative Therapies Inc reserves the right to make changes in the product design without reservation and without notification to its users. All other products and company names herein may be trademarks of their respective owners.
Contents
Contents Clinician notes to patient ... v Introduction ... 5 About this Guide ...5 RTI Technical Support ...5 What You Need to Know Before You Start ...5 Statement of Intended Use ...6 Absolute Contraindications ...6 Additional Absolute Contraindications for Upper Extremity Ergometry...6 Relative Contraindications ...6 Additional Relative Contraindications for Upper Extremity Ergometry...7 Cautions...7 Additional Cautions for Upper Extremity Ergometry ...8 Additional Cautions for Upper Extremity Ergometry with Children ...8 Special Considerations ...8 Warnings...9 Adverse Reactions...10 Safety Measures ...11 Electrical Safety ...11 Environment...11 Parts and Operation...11 Electrostatic Discharge ...12 Electromagnetic Compatibility...12
RT300 System ... 19 What is the RT300 System used for? ...19 RT300 System Overview ...20 RT300 pediatric model ergometers for children...22 Parts of the RT300 System...23
Setting Up the Equipment ... 29 Checking the Parts...29 Fitting the safety handle or arm crank ...29 Fitting the controller / stimulator...31 Fitting the calf rests...32 Fitting the wheelchair restraints ...32 Connecting the Power ...34 Setting up the RT300 on a cart ...35
Setting the leg ergometer to fit you ... 41 Base of support...41 Setting the distance ...41 Setting the ergometer’s height ...42 Adjust the height of the safety handle or arm crank ...43 Adjust the angle of the safety handle or arm crank ...43 Adjusting the pedal crank radius...44 Adjusting pediatric pedals ...45
Setting the arm ergometer to fit you ... 48 Positioning the arm crank ...48
Fitting RT300 supine... 49 Using the RT300 System ... 51 Positioning on the RT300 Leg Ergometer...52 Using the Calf Rests and Footrests ...52 Positioning on the RT300 Arm Ergometer ...53 Using the RT300 Wheelchair Restraints...54
2005-20012 Restorative Therapies Inc
RT300 User Guide • iii
Contents
Calibrating the RT300 Ergometer...55 Leg ergometer calibration ...55 Arm ergometer calibration ...57
Troubleshooting the RT300... 59 Internet connection ...59 Other issues ...59
Care of the RT300 System... 60 Cleaning ...60 Maintenance ...60 Storing the RT300 ...60 Moving the RT300 System ...61
Shipping Instructions ... 62 Symbols ... 62 Technical Specifications ... 63 RT300 Ergometer Limited Warranty (USA)... 65 Limited Warranty, Terms and Conditions ...65 A. Introduction...65 B. Enquiries and Warranty Service...65 C. Your Warranties and Rights ...65 D. Warranty limitations...65 E. Restrictions on product use...66 F. Keywords...66
RT300 Ergometer Limited Warranty (Australia) ... 67
iv • RT300 User Guide
2005-2012 Restorative Therapies Inc
Introduction
Introduction About this Guide This guide explains how to use the RT300 System in your own home. It contains information about how to: •
apply proper safety measures when you use the system
•
set up and use the equipment
•
fix any basic problems that may occur
This guide should be read in conjunction with the SAGE User Guide. The SAGE User Guide explains how to operate your RT300’s controller.
RTI Technical Support Restorative Therapies Inc (RTI) offers a technical support service to provide troubleshooting help when: •
you have read this guide but are experiencing difficulties with the RT300 System
•
the system is due for a maintenance service
•
you need to order replacement parts
Contact RTI Technical Support: •
help request ticket at www.rt300.com
•
In the USA and Canada by calling 1-800-609-9166, option 2
•
In Australia by calling 02 8006 0939
What You Need to Know Before You Start Before you start using the RT300 System: •
read this guide – in particular, check the Statement of Intended Use, Contraindications, Cautions, Warnings and Safety Measures sections of this guide
•
read the SAGE User Guide
•
talk to your clinician who will provide training to help you get started and explain how the Cautions, Warnings and Safety Measures relate to you.
Read the following sections carefully so you understand how to use the RT300 System safely. Before you start using the RT300 System, talk to your clinician about the information in this chapter.
The RT300 generates currents sufficient to cause electrocution if used improperly.
2005-2012 Restorative Therapies Inc
RT300 User Guide • 5
Introduction
Statement of Intended Use The RT300 and pediatric versions are intended for general rehabilitation for: 1. Relaxation of muscle spasms 2. Prevention or retardation of disuse atrophy 3. Increasing local blood circulation 4. Maintaining or increasing range of motion The RT300 is for prescription use only. The RT300 pediatric version is intended for population ages 4 to 12 years. The RT300 is intended for use with a surface electrical stimulation garment for population ages 12 and above.
Powered muscle stimulators should only be used under medical supervision for adjunctive therapy for the treatment of medical diseases and conditions.
Absolute Contraindications There are three contraindications, which absolutely exclude a patient from utilizing the RT300. 1. Powered muscle stimulators, including the RT300, should not be used on patients with cardiac demand pacemakers. 2. Fractures - The presence of unhealed fractures in the lower extremities restricts the patient from using the RT300 until the fracture is stable. 3. Pregnancy should be considered a temporary absolute contraindication, as the safety of the fetus has not been established when using electrical stimulation.
Additional Absolute Contraindications for Upper Extremity Ergometry There are three additional contraindications, which absolutely exclude a patient from utilizing the RT300 upper extremity option. 1. Grade 3 tear of either rotator cuff. 2. Inability to keep humeral head into glenohumeral joint utilizing electrically evoked contraction of the shoulder. 3. Fractures - The presence of unhealed fractures in the upper extremities, shoulder girdle or upper ribs restricts the patient from using the RT300 until the fracture is stable.
Relative Contraindications 1. Denervated muscle in extremities to be stimulated - muscle contractions will not be evoked by the RT300’ stimulation. 2. Severe Spasticity - In most cases, spasticity will not disqualify an individual from using the RT300. A vigorous stretching program may be necessary prior to therapy along with modified therapy settings to reduce the probability of spasm.
6 • RT300 User Guide
2005-2012 Restorative Therapies Inc
Introduction
3. Heterotopic Ossification/Limited Range of Motion - The patient can be positioned in their chair to accommodate for minor limitations in joint ranges; however, a minimum of 100 degrees of hip and knee flexion is recommended. 4. Severe Osteoporosis - Mild to moderate osteoporosis is prevalent in the majority of the SCI population and in itself does not represent an immediate exclusion from the therapy. If the osteoporosis has progressed so that there is an increased risk of fractures, the therapy should be adjusted to account for the degree of osteoporosis. 5. Dysaesthetic Pain Syndrome - In some cases the pain syndrome may worsen making the stimulation and the therapy may be too uncomfortable to continue. 6. Presence of pressure sores or open wounds in area of treatment. 7. Recently (< 3month) implanted plates, pins, screws and other hardware.
Additional Relative Contraindications for Upper Extremity Ergometry 1. Implanted stimulators such as vegus nerve, phrenic, cardiac, cochlear, diaphragmatic stimulators. 2. Malignancy. 3. Heterotopic Ossification/Limited Range of Motion - The patient can be positioned in their chair to accommodate for minor limitations in joint ranges; however, a minimum of 90 degrees of shoulder flexion and 100 degree of elbow flexion is recommended.
Cautions Caution should be exercised during the treatment of individuals with the following conditions:
1. Patients with ANY implanted medical device. 2. Caution should be used for patients with suspected or diagnosed heart problems. 3. Caution should be used for patients with suspected or diagnosed epilepsy. 4. Patients with history of hip or knee dislocation/subluxation 5. Caution should be used in the presence of the following: a.
history of uncontrolled autonomic dysreflexia;
b.
history of lower limb stress fractures;
c.
history of severe spasticity or spastic response to application of electrical stimulation;
d.
when there is a tendency to hemorrhage following acute trauma or fracture; and
e.
following recent surgical procedures when muscle contraction may disrupt the healing process.
2005-2012 Restorative Therapies Inc
RT300 User Guide • 7
Introduction
Additional Cautions for Upper Extremity Ergometry Caution should be exercised during the treatment of individuals with the following conditions when using upper extremity ergometry: 1. 2.
A history of upper limb stress fractures. Uncontrolled hypertension
Additional Cautions for Upper Extremity Ergometry with Children Torus fractures, or buckle fractures, are extremely common injuries seen in children. Because children have softer bones, one side of the bone may buckle upon itself without disrupting the other side; this is also known as an incomplete fracture. Torus fractures have been reported in children during upper extremity ergometry. To reduce the chance of wrist injury: 1. Ensure that the wrist is well supported during upper extremity ergometry. 2. Ensure that the hand, wrist and arm adaptations recommended by your clinician are always used 3. Ensure that the child remain seated straight on towards the ergometer and avoid twisting motion of the forearm and wrist. If your child complains of wrist pain or if notice any swelling of a wrist during or after upper extremity ergometry consult your clinician immediately.
Special Considerations Clinical judgment should be utilized to evaluate the potential relevance of the following special considerations: 1.
Patients with ANY implanted medical device
2.
Orthostatic hypotension
3.
Ailments where high fever, high blood pressure, or high heart rate are present
4.
Respiratory complications
5.
A cancerous lesion - stimulation should not be applied over, or in proximity to, cancerous lesions
6.
An infection in the area of electrode placement
7.
A urinary tract infection – may increase the probability of autonomic dysreflexia during a therapy session
8.
Guidelines for undertaking kinetic exercise should also be considered1.
1
American College of Sports Medicine, Guidelines for Graded Exercise Testing and Exercise Prescription, 3rd Edition. Lea & Febriger, 1986 8 • RT300 User Guide
2005-2012 Restorative Therapies Inc
Introduction
Warnings If the patient’s blood pressure or heart rate reaches a level that the clinician considers a compromise to safety, or if the patient feels faint or nauseated, the session should be stopped immediately and appropriate medical action should be taken. If the patient begins to feel light-headed or nauseated, stop the treatment immediately.
1.
This is a prescribed device and it should not be given to other individuals.
2.
Some medical conditions can be aggravated by physical activity. If symptoms of a medical condition occur during or after a therapy session, consult your clinician immediately.
3.
If directed by the clinician, the patient’s blood pressure and heart rate should be monitored during the therapy session.
4.
The long-term effects of chronic electrical stimulation are unknown.
5.
The long term effects of electrical stimulation on a pregnant individual (mother and baby) are unknown.
6.
Stimulation should not be applied over the carotid sinus nerves, particularly in patients with a known sensitivity to the carotid sinus reflex.
7.
Stimulation should not be applied over the neck or mouth. Severe spasm of the laryngeal and pharyngeal muscles may occur and the contractions may be strong enough to close the airway or cause difficulty in breathing.
8.
Stimulation should not be applied trans-thoracically (across the chest) in that the introduction of electrical current into the heart may cause cardiac arrhythmias.
9.
Stimulation should not be applied trans-cerebrally (to the head).
10. Stimulation should not be applied over swollen, infected, or inflamed areas or skin eruptions, e.g. phlebitis, thrombophlebitis, varicose veins, etc. 11. Stimulation should not be applied over, or in proximity to, cancerous lesions. 12. Electrode placement and stimulation settings should be based on the guidance of the prescribing practitioner. 13. Powered muscle stimulators should be kept out of the reach of children. Children should only use
this device under adult supervision. Never leave the RT300 unattended when children are present. 14. Powered muscle stimulators should be used only with the leads and electrodes recommended for
use by the manufacturer. 15. The arm crank should not be used unless continuous assistance is available as while using this
device it may not be possible for the patient to stop the therapy while their arm(s) / hand(s) are secured.
2005-2012 Restorative Therapies Inc
RT300 User Guide • 9
Introduction
Adverse Reactions Autonomic Dysreflexia Individuals with a spinal cord injury at or above the T6 level are prone to episodes of autonomic dysreflexia. These episodes may be triggered by electrical stimulation. If you have a spinal cord injury, it is important that you discuss this with your clinician and understand how autonomic dysreflexia may impact you:
know how to recognize the signs of autonomic dysreflexia know how to react if it occurs, including stopping electrical stimulation
To reduce the chances of experiencing autonomic dysreflexia the following precautions should be followed:
Empty bladder and bowels before commencing a therapy session with the RT300. Do NOT use the RT300 if you have a bladder infection or fever.
IMPORTANT NOTE: Care in noting any symptoms of Autonomic Dysreflexia should be taken during every therapy session. Autonomic Dysreflexia could occur during any session even if you have not experienced it recently or in prior therapy sessions.
IMPORTANT NOTE: The vital signs display and alarms from the pulse oximeter are not to be used as a substitute for careful monitoring for any symptoms of Autonomic Dysreflexia or other health related issues. The pulse oximeter data is only intended to provide outcome data on your therapy session. IMPORTANT NOTE TO PARENTS: The most common signs of dysreflexia in children include headache, dizziness, blurred vision, redness of the face, neck, and/or ears, and feeling hot. Sometimes individuals will also report goose bumps, an upset stomach, or tingling feelings. Consult your child’s physician for more information on how to recognize these symptoms.
If any of these symptoms occur stop the therapy session immediately. Skin irritation and burns Skin irritation and burns beneath the electrodes have been reported with the use of powered muscle stimulators. Some patients may experience skin irritation or hypersensitivity due to the electrical stimulation or electrical conductive medium (gel). The irritation can usually be reduced by using a sensitive skin electrode or an alternative electrode placement.
Thermal Dysregulation Some patients may be prone to thermal dysregulation. Episodes of thermal dysregulation are usually less pronounced when exercising in an environment controlled for temperature and humidity. Attention should be paid to hydration and limiting the duration and intensity of exercise in hot or cold environments.
10 • RT300 User Guide
2005-2012 Restorative Therapies Inc
Introduction
Safety Measures Electrical Safety •
Avoid flammable anesthetics: Never use the equipment where there is a flammable anesthetic mixture containing air, oxygen or nitrous oxide.
•
Connecting the system: Connect the system parts only in the way described in this guide. Do not try to connect or disconnect any parts while the system is turned on.
•
Other equipment: Do not use the system with any equipment not supplied by Restorative Therapies Inc as doing so could affect the electrical safety of the system.
•
System parts: The system contains complex electronic parts. The casings must not be opened by anyone other than qualified service personnel or the warranty will no longer apply. Also, if you attempt to make repairs yourself, you might be seriously injured.
Environment •
Use a stable surface: Position the motorized ergometer on an even, anti-slip surface so the equipment is stable and does not move during use.
•
Use an anti-slip device: As an added precaution, you may wish to use an anti-slip device (e.g. mat, etc) to make sure your wheelchair does not slip backwards during very active therapy.
•
Avoid wet areas: Never use the RT300 Cycle Ergometer in wet or damp areas.
•
Avoid heat sources: Place the RT300 Cycle Ergometer equipment away from heat sources such as radiators, stoves, etc, or other objects that produce heat.
•
Arrange the power cord carefully: Arrange the power cord so it will not be walked or tripped on, or damaged by objects being placed on it.
•
Use the correct line voltage: Make sure you connect the RT300 Cycle Ergometer to a grounded (earthed) power outlet that uses the voltage shown on the product label.
•
Follow extension cord ratings: If you plan to use an extension cord, make sure the plug has three pins (i.e. the plug includes a third, protective earth pin).
Parts and Operation •
Isolation from supply mains: The RT300 Cycle Ergometer can be disconnected from the mains power supply by disconnecting the power supply cord from the RT300
•
Do not use the controller for other purposes: Do not use the controller for any other purposes – for example, to store documents or images as it may alter how the controller works.
•
Do not use other controllers: Do not use another person’s controller as each controller is specifically programmed to suit an individual’s requirements. Using another person’s controller may lead to incorrect or excessive stimulation.
•
Before use: Before using the RT300 Cycle Ergometer for the first time or after it has been transported over a long distance, allow it to stand for about 1 hour at room temperature.
•
After a long absence: If you do not use the RT300 Cycle Ergometer system for a prolonged period (e.g. a few months), you may find your progress is affected. If this occurs, it is important to see your clinician for re-evaluation and, perhaps, re-training before you start using the system again.
•
Handle with care: Handle the various parts of the RT300 Cycle Ergometer system with care to reduce the risk of dropping and damaging the equipment. Do not stand on the footrests or the device’s plastic motor covers.
•
Check for wear and tear: Each time you use the RT300 Cycle Ergometer, carefully inspect all the parts first. If you notice any damage – such as cracks or breaks in the covering of a cable – stop using the system and contact RTI Technical Support.
2005-2012 Restorative Therapies Inc
RT300 User Guide • 11
Introduction
•
Do not handle or adjust the pedals when the RT300 Cycle Ergometer system is switched on.
•
Moving parts: Keep hands well away from the pedals while the machine is in operation.
•
Report changes: If you find any changes occur in how the RT300 Cycle Ergometer operates, stop using the system and contact your clinician or RTI Technical Support.
Repairs to the RT300 must only be carried out by properly trained specialists.
If the RT300 is damaged or faulty or if it produces abnormal noises or smells, stop the therapy session immediately, unplug the power cord and contact your service technician.
•
Clothing: Dress comfortably to allow for the appropriate range of motion in the legs and / or arms. Avoid wearing clothing that may catch on the moving parts of the system.
•
Shoe laces: Be careful to capture shoe laces under the foot restraint Velcro straps to prevent them becoming tangled around the crank.
Electrostatic Discharge A discharge of static electricity could damage: •
electrical parts of the system
•
software programs on the controller
If static electricity is present, touch a metal part of the ergometer before fitting any parts or touching the controller. Examples of where static electricity might occur are: •
putting clothes on over your head
•
in very low humidity
Electromagnetic Compatibility The RT300 needs special precautions regarding EMC and needs to be installed and put in service according to the EMC information provided in the User Guide. The use of accessories and cables other than those specified with the exception of accessories and cables sold by the manufacturer of the RT300 as replacement parts for internal components, may result in increased emissions or decreased immunity of the RT300. Electromagnetic interference (EMI) from sources such as radio and TV stations, amateur radio (HAM) transmitters, two-way radios, and cellular phones can affect the RT300 Cycle Ergometer. a. Portable and mobile RF communications equipment can affect the RT300 b. Do not operate handheld transceivers such as citizens band (CB) radios while operating the RT300 c. Be aware of nearby transmitters, such as radio or TV stations d. Keep the RT300 at least 20ft away from microwave ovens
12 • RT300 User Guide
2005-2012 Restorative Therapies Inc
Introduction
Effective Radiated Power The RT300 has been shown to have the following Effective Isotropically Radiated Power:
Transmission Frequency 2402 MHz 2441 MHz 2480 MHz
Average EIRP
Peak EIRP
(dBm) -1.65 -1.65 -1.98
(dBm) -1.15 -1.15 -1.45
FCC Compliance Changes or modifications to the RT300 not expressly approved by the party responsible for compliance could void the user’s authority to operate the equipment. This device and its antenna's must not be co-located or operating in conjunction with any other antenna or transmitter.
RESTORATIVE THERAPIES, INC.
FCC ID: TE8RT300
This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) this device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.
Additional notes on electromagnetic compatibility To reduce the risk of electromagnetic interference space RT300 systems at least 5’ apart from each other. The RT300 has been tested in a number of typical electromagnetic environmental situations however it is not possible to test for every potential situation. If you will be operating the RT300 in an environment with the potential for significant electromagnetic interference please contact RTI or an electromagnetic compatibility expert for advice prior to use. The Bluetooth searching function of 3rd party devices such as PDA’s may become slow in an environment where several RT300 systems are operating.
2005-2012 Restorative Therapies Inc
RT300 User Guide • 13
Introduction
Guidance and manufacturer’s declaration - electromagnetic emissions The RT300 is intended for use in the electromagnetic environment specified below. The customer or the user of the RT300 should assure that it is used in such an environment.
Emissions test
Compliance
Electromagnetic environment – guidance
Group 1
The RT300 uses RF energy only for its internal function. Therefore, its RF emissions are very low and are not likely to cause any interference in nearby electronic equipment.
Group 2
NA
RF emissions CISPR 11 RF emissions CISPR 11 RF Emissions
Class B
CISPR 11 Harmonic emissions
Class A,
IEC 61000-3-2 Voltage fluctuations/flicker emissions
Applicable
The RT300 is suitable for use in all establishments, including domestic establishments and those directly connected to the public low-voltage power supply network that supplies buildings used for domestic purposes.
IEC 61000-3-3 The RT300 is suitable for use in all establishments, including domestic establishments and those directly connected to the public low-voltage power supply network that supplies buildings used for domestic purposes.
14 • RT300 User Guide
2005-2012 Restorative Therapies Inc
Introduction
Guidance and manufacturer’s declaration – electromagnetic immunity The Model RT300 is intended for use in the electromagnetic environment specified below. The customer or the end user of the Model RT300 should assure that it is used in such an environment. IEC 60601 Electromagnetic Immunity test Compliance level environment - guidance Test level Electromagnetic +6 kV contact discharge +8 kV air (ESD)
+6 kV contact +8 kV air
---
IEC 61000-4-2 Electrical fast transient/burst
+2 kV for power supply lines
IEC 61000-4-4
+1 kV for input/output lines
Surge
+1 kV differential mode
IEC 61000-4-5
+2 kV for power supply lines +1 kV for input/output lines
+1 kV differential mode +2 kV common mode
---
---
+2 kV common mode Voltage dips, short interruptions and voltage variations on power supply input lines IEC 61000 - 4 11
Power frequency (50/60 Hz) magnetic field IEC 61000-4-8
<5 % UT (>95 % dip in UT) for 0.5 cycle
<5 % UT (>95 % dip in UT) for 0.5 cycle
40 % UT (60 % dip in UT) for 5 cycles
40 % UT (60 % dip in UT) for 5 cycles
70 % UT (30 % dip in UT) for 25 cycles
70 % UT (30 % dip in UT) for 25 cycles
<5 % UT (>95 % dip in UT) for 5 sec
<5 % UT (>95 % dip in UT) for 5 sec
3 A/m
3 A/m
NOTE UT is the a.c. mains voltage prior to application of the test level.
2005-2012 Restorative Therapies Inc
RT300 User Guide • 15
---
---
Introduction
Guidance and manufacturer’s declaration - electromagnetic emissions The Model RT300 is intended for use in the electromagnetic environment specified below. The customer or the user of the Model RT300 should assure that it is used in such an environment. Immunity IEC 60601 Compliance Electromagnetic environment - guidance test Test level Level Portable and mobile RF communications equipment should be used no closer to any part of the Model RT300, including cables, than the Recommended separation distance calculated from the equation applicable to the frequency of the transmitter. Conducted 3 Vrms 3V RF 150 kHz to 80 Recommended separation distance IEC 61000- MHz d = 1.7 √P 4-6 3 V/m d = 1.7 √P 80 MHz to 800 MHz Radiated RF 3 V/m 26 MHz to 2.5 d = 2.3 √P 800 MHz to 2.5 GHz IEC 61000- GHz 10 V/m 4-3 d = 0.35 √P 80 MHz to 800 MHz 26 MHz to EN60601-2- 1GHz d = 0.7 √P 800 MHz to 2.5 GHz 10 Where P is the maximum output power rating of the transmitter in watts (W) according to the transmitter manufacturer and d is the recommended separation distance in meters (m). Field strengths from fixed RF transmitters, as determined by an electromagnetic site survey,a should be less than the compliance level in each frequency range.b Interference may occur in the vicinity of equipment marked with the following symbol: NOTE 1 At 80 MHz and 800 MHz, the higher frequency range applies. NOTE 2 These guidelines may not apply in all situations. Electromagnetic propagation is affected by absorption and reflection from structures, objects and people.
16 • RT300 User Guide
2005-2012 Restorative Therapies Inc