Amrex MS401B User Manual
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Amrex MS401B User Manual

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MS401B
*
Muscle Stimulator
User's Guide
Amrex
®
electrotherapy equipment
a division of Amrex-Zetron, Inc.
*Federal law (USA) restricts this device to sale by or on the order of a licensed practitioner licensed by the law of the state in which he
practices to use or order the use of this device.

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  • Page 1 ® electrotherapy equipment a division of Amrex-Zetron, Inc. *Federal law (USA) restricts this device to sale by or on the order of a licensed practitioner licensed by the law of the state in which he practices to use or order the use of this device.
  • Page 2 MS401B User's Guide Stimulator Revised February 2014 Copyright © Amrex-Zetron, Inc. 1995. All rights reserved. Printed in the United States of America The following are registered or trademarked by Amrex: Amrex ® Flextrode ® AMREX electrotherapy equipment ® a division of Amrex-Zetron, Inc.
  • Page 3 Thank you. . . for selecting the Amrex MS401B Stimulator. We believe that you will find this instrument to be versatile, dependable, and user friendly. The MS401B is designed for the application of muscle stimulation. The Amrex MS401B Stimulator is a four- channel, eight-pad, electrical muscle stimulator that produces bi-phasic, mono- phasic, surge and reciprocal output.
  • Page 4 9069. Damage, resulting from repairs made outside the factory, is not covered under the warranty. To maintain original design specifications, your Amrex muscle stimulator must be calibrated and safety tested on an annual basis. Amrex strongly recommends that servicing be referred to the factory. Call toll free (800) 221-9069.
  • Page 5 This is to prevent any sudden or inadvertent stimulation output to the patient in the event that: The MS401B Intensity controls are not set to the 0/Reset position enabling the audible •...
  • Page 6 Electrical Muscle Stimulation—Contraindications Contraindicated for patients with cardiac demand pacemakers. • Should not be used on cancer patients. • Electrical Muscle Stimulation—Warnings Long term effects of chronic electrical stimulation are unknown. • Safety has not been established for the use of electrical muscle stimulation during pregnancy. •...

  • Page 7: Table Of Contents

    Power Section ........................5 Part 3 MS401B Stimulator Modality ..................... 9 Part 4 MS401B General Operation and Application Procedures ..........17 General Operation........................17 Application of Electrical Muscle Stimulation ................19 Adverse Effects - Shortwave Diathermy Interference ............20 Electrical Muscle Stimulation—Indications ................21 Electrical Muscle Stimulation—Contraindications ..............

  • Page 9: Part 1 Overview

    Part 1 AMREX Overview The layout of the MS401B panel consists of controls, indicator lights, and output jacks. H o l d C o n t i n u o u s M o n o S u r g e...
  • Page 10 Part 1 In the illustration below, dashed lines surround each of the MS401B's sections. A brief description of each section follows the illustration, and Parts 2 and 3 of this manual contain detailed descriptions. H o l d C o n t i n u o u s...
  • Page 11 Use the Power/Timer to activate the main ac power and set the treatment duration. The power will shut off and a bell will sound when the treatment is complete. MS401B Stimulator Modality Section Set the intensities and monitor the output of stimulation with the controls and connectors in this section of the panel.
  • Page 12 Part 1 MS401B User's Guide...

  • Page 13: Power Section

    Part 2 AMREX Power Section In the illustration below, dashed lines surround the MS401B's power section. H o l d C o n t i n u o u s M o n o S u r g e R e c i p...
  • Page 14 Part 2 The power section of the MS401B front panel and rear panel is depicted below. Items referenced with circled numbers (1 – 3) are explained on the following page. H o l d C o n t i n u o u s...
  • Page 15 Power/Timer knob counterclockwise to the Off position. The ac power will shut off and a bell will sound. 2. AC RECEPTACLE: Connection for MS401B's ac power cord. 3. VELCRO WASHER: To attach wall mount velcro bracket strap. MS401B User's Guide...
  • Page 16 Part 2 MS401B User's Guide...

  • Page 17: Ms401B Stimulator Modality

    Part 3 AMREX MS401B Stimulator Modality In the illustration below, dashed lines surround the MS401B's stimulator section. H o l d C o n t i n u o u s M o n o S u r g e...
  • Page 18 Part 3 The stimulator section of the MS401B panel is depicted below. Items referenced with circled numbers (4 – 8) are explained on the following page. H o l d C o n t i n u o u s...
  • Page 19 MS401B Stimulator Modality 4. OUTPUT MODE CONTROL: (SELECTIONS): • Surge – Provides surged output simultaneously on Channel A, B, C, and D. ( for Channel A, B, C, and D in Surge mode, the output on rate is selectable from 1.0, 2.5, 5.0, 7.5, 10, 15, 20, or 30 seconds, and the output off rate is selectable from 2.5, 5.0, 10, 15, 20, 30,...
  • Page 20 Part 3 The stimulator section of the MS401B panel is depicted below. Items referenced with circled numbers (9 – 16) are explained on the following page. H o l d C o n t i n u o u s...
  • Page 21 Note: The Intensity control for Channel A has a unique reset circuit feature which prevents the practitioner from applying one patient's treatment settings to another patient. The AMREX Reset Circuit also allows the continuation or extension of the patient's treatment period if power is restored within ten (10) seconds.
  • Page 22 Part 3 The stimulator section of the MS401B panel is depicted below. Items referenced with circled numbers (17 – 23) are explained on the following page. H o l d C o n t i n u o u s...
  • Page 23 When power is restored within ten (10) seconds after being interrupted or turned off, or within ten (10) seconds after the treatment period has been completed and the bell has sounded, the AMREX Reset circuit will be bypassed and the Reset Intensities indicator light will not illuminate. This will allow the continuation or extension of the patient's treatment period.
  • Page 24 Part 3 MS401B User's Guide...

  • Page 25: Ms401B General Operation And Application Procedures

    Application Procedures General Operation 1. Connect the MS401B's ac power cord to the MS401B's ac receptacle and plug the "Hospital Grade" connector to a properly grounded 120Vac, 60Hz receptacle. 2. Connect the patient "Treatment Stop" Switch to the "TREATMENT STOP" JACK.
  • Page 26 Reduce the Intensity controls for Channel A, B, C, and D to the 0/Reset position enabling the audible "clicks". Thoroughly clean the pad(s) with warm water and dispose of the used cloth cover(s). MS401B User's Guide...

  • Page 27: Application Of Electrical Muscle Stimulation

    Apply a generous amount of Flextrode Conductive Spray to the moistened cloth cover. If the Flextrode Conductive Spray is not desired, apply a generous amount of Amrex Conductance and Coupling Gel to the thoroughly moistened Flextrode cloth cover. A generous amount of Flextrode Conductive Spray or Amrex Conductance and Coupling Gel is required to insure good conductivity.

  • Page 28: Adverse Effects - Shortwave Diathermy Interference

    In all cases, it would be very dangerous to give shortwave diathermy and low volt ac stimulator treatment to a patient simultaneously. Any patient who reports a sudden, unexplainable "surge" in output may be experiencing the effects of shortwave interference. MS401B User's Guide...

  • Page 29: Electrical Muscle Stimulation-Indications

    MS401B General Operation and Application Procedures Electrical Muscle Stimulation—Indications Relaxation of muscle spasms • Prevention or retardation of disuse atrophy • Increased local blood circulation • Muscle reeducation • Maintenance of or increase in range of motion • Immediate postsurgical stimulation of calf muscles to prevent venous •...

  • Page 30: Electrical Muscle Stimulation-Precautions

    The irritation can usually be reduced by use of an alternate conductive medium or alternate electrode placement. Skin irritation and burns beneath the electrodes have been reported with the use of electrical muscle stimulators. MS401B User's Guide...

  • Page 31: Appendix A Specifications

    Frequency: is not covered under the warranty. 1, 3, 5, 10, 20, 28, 40, 60, 80, 100, 120, 160 pps Your Amrex stimulator must be tested and Surge - On duration: calibrated on an annual basis to maintain ....... 1.0, 2.5, 5.0, 7.5, 10, 15, 20, 30 s original design specifications.
  • Page 32 Appendix A MS401B User's Guide...

  • Page 33: Appendix B References

    Springer-Verlag, Berlin, West Germany, 1986. Nyborg, W.L. and M.C. Ziskin, ed. Biological Effects of Ultrasound. Vol. 16 of Clinics in Diagnostic Ultrasound. Churchill Livingstone, New York, 1985. Peat, Malcolm, ed. Current Physical Therapy. B.C. Decher, Inc., Philadelphia, Pennsylvania, 1988. MS401B User's Guide...
  • Page 34 Appendix B MS401B User's Guide...

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