BTS Freeemg 1000 User Manual
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BTS Freeemg 1000 User Manual

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Summary of Contents for BTS Freeemg 1000

  • Page 3 Document Number: EREMB-01200-10 Published: February 2018 Copyright © 2015 BTS SpA. All Rights Reserved.

  • Page 4: Table Of Contents

    Table of contents Table of contents Table of contents ..........................1 Copyright notice ........................... 4 Intended use ..........................5 Introduction ..........................6 Symbols legend ..........................6 General description ........................... 6 System contents ........................... 7 Standard components ........................7 Additional components ........................9 Receiving unit ..........................
  • Page 5 Table of contents How to disconnect the probes from the charger ................40 Installation ..........................43 Minimum system requirements for the user workstation .............. 43 Recommended system requirements for the user workstation ............. 43 Device and Software installation ..................... 43 System use ..........................
  • Page 6 Table of contents Appendix K – BTS internal coding ..................104 Appendix M – Regulatory notice ..................105...

  • Page 7: Copyright Notice

    BTS product. All trademarks are registered by the respective owners. The licencing terms of the software provided with the BTS FREEEMG 1000 are described in the end- user license agreement that must be accepted by the user to complete the software installation.

  • Page 8: Intended Use

    European Directive 93/42/EEC (and its amendments). BTS FREEEMG 1000 must be used at all times for this purpose only, by qualified personnel, in an environment suitable for the execution of EMG analyses and respecting the laws in force in the...

  • Page 9: Introduction

    BTS FREEEMG 1000 seamlessly integrates with BTS motion analysis systems, through the SMART dedicated software. Through the BTS SDK or by means of the analog output receiver, BTS FREEEMG 1000 can also work with isokinetic machines (e.g. Biodex and Con-Trex), rehabilitative robots (BTS ANYMOV) and virtual reality therapeutic systems (BTS NIRVANA) for the evaluation of real muscle activity during rehabilitation or sport training activities.

  • Page 10: System Contents

    System contents 4 System contents 4.1 Standard components • Receiving unit • Wireless electromyographic (EMG) probes • Probes charger (AC adapter included)
  • Page 11 System contents • USB extension cable • Set of disposable electrodes • USB flash drive (including: receiver unit drivers, BTS EMG-Analyzer software, BTS FREEEMG1000 user manual and BTS EMG-Analyzer user manual)

  • Page 12: Additional Components

    System contents • Shoulder strap, briefcase keys and cleaning cloth 4.2 Additional components • Additional receiving unit • USB Hub...
  • Page 13 System contents • Additional charger(s) plus bridge cable for the connection with the main charger • Footswitch (FSW) kit ▪ FSW wireless probes ▪ Connecting cables...
  • Page 14 System contents ▪ Sensors ▪ Charging cables • Electrogoniometer (EGN) kit ▪ EGN wireless probes ▪ Connecting cables...
  • Page 15 • BTS I-PORT EXPANDER (for the synchronized acquisition in EMGAnalyzer of FREEEMG1000 and analog external devices) • BTS INTEGRA (for the synchronized recording in third party devices of EMG signals acquired with FREEEEMG1000) For further information on the Isokinetic kit, BTS VIXTA, BTS TRIGGER BOX, BTS I-PORT...

  • Page 16: Receiving Unit

    Receiving unit 5 Receiving unit The receiving unit, connected to the workstation via USB, allows the wireless reception of the signals acquired by the wireless probes (Figure 5.1). Figure 5.1 A single receiving unit is able to handle simultaneously 10 different wireless probes selectable among EMG, FSW (covering up to 4 contact areas each) and EGN probes (Figure 5.2).
  • Page 17 Receiving unit If the system includes more than 10 wireless probes, two receiving units will be enclosed in the suitcase. Both units should be connected to the workstation at all times through the USB hub (Figure 5.3) even if only 10 (or less) probes need to be acquired. Figure 5.3...

  • Page 18: Emg Wireless Probes

    EMG wireless probes 6 EMG wireless probes The EMG wireless probes have been designed to be light weight and compact in size in order to grant the patient full range of motion during the task execution without any restriction. The probes can be directly attached to pre-gelled disposable snap electrodes and do not require any additional fastening such as adhesive tape (Figure 6.1).

  • Page 19: Solid-State Memory

    1 hour and 40 minutes for systems with less than 6 EMG probes, and up to 2 hours for systems with more than 6 EMG probes. Two acquisition modes are allowed by the BTS EMG-Analyzer software: the real time acquisition and the acquisition with data storage.

  • Page 20: Emg Probes Status Led

    EMG wireless probes 6.3 EMG probes status LED The Status LED indicates when the probe is powered on and displays other special status modes with different blinking codes. The possible probe states are: • Charging: steady blue LED. When the probes are connected to the charger and the charger power is on, the probes are charging and present a steady blue LED.

  • Page 21: Emg Probes Battery Status

    6.4 EMG probes battery status The battery status of the EMG probes can be checked through the BTS EMG-Analyzer software. By left clicking on the double right arrowhead button at the top right corner of the main window (Figure 6.3) a pop-up menu with a battery level indicator for each probe will appear (Figure 6.4).

  • Page 22: How To Turn On And Off The Emg Probes

    EMG wireless probes Figure 6.4 The probes can be recharged using the dedicated charger. The probes can be connected to the snap fasteners on the charger through their respective snap connectors. For more information on how to recharge the EMG probes, see the How to recharge the probes section of the Charger chapter.
  • Page 23 EMG wireless probes If the probes are connected to the charger, and the charger power is on, the probes cannot be switched on. To turn on the probes, unplug them from the charger or turn off the charger power. To turn it off, the probe needs to be kept in contact with a magnet for about 3 seconds. Then it must be moved away from the magnet.

  • Page 24: Footswitch And Electrogoniometer Kits

    Footswitch and electrogoniometer kits 7 Footswitch and electrogoniometer kits The footswitch and electrogoniometer kits are optional components of the system. The footswitch kit allows the definition of the contact phases during motion, typically foot-floor contacts. The electrogoniometer kit allows the measure of the joint angles progression over time. In the following, the single components of both kits are described.

  • Page 25: Fsw And Egn Probes Status Led

    Footswitch and electrogoniometer kits 7.1.2 FSW and EGN probes status LED The Status LED indicates when the probe is powered on and displays other special status modes with different blinking codes. The possible probe states are: • Charging: steady red LED. When the probes are connected to the charger and the charger power is on, the probes present a steady red LED.

  • Page 26: Fsw And Egn Probes Battery Status

    7.1.3 FSW and EGN probes battery status The battery status of the FSW and EGN probes can be checked through the BTS EMG-Analyzer software by left clicking on the double right arrowhead button at the top right corner of the main window, as described for the EMG probes.

  • Page 27: Electrogoniometers

    Two types of electrogoniometers can be provided with BTS FREEEMG 1000. The first kind has a green sliding endblock with a triangular prism shape (sensing block), and a black fixed endblock with the shape of a rectangular parallelepiped (reference block).
  • Page 28 Footswitch and electrogoniometer kits Figure 7.3 Figure 7.4 For both types of electrogoniometer, if the bases of the reference and sensing blocks are placed on a plane and they rotate sliding on this same plane without detaching from it (rotation around the Y axis), the information about the angular displacement will be available through the green cable (Figure 7.5).
  • Page 29 Figure 7.7 It must be kept in mind that BTS software products assign the label “Flexion-Extension” to the signal available through cable 1. The label of the corresponding secondary movement (i.e. “Inversion- Eversion”, “Abduction-Adduction”, “Valgus-Varus”,…) is assigned to cable 2. This convention influences how the electrogoniometer should be positioned on the patient’s body.

  • Page 30: Egn Calibration

    Footswitch and electrogoniometer kits Figure 7.8 To increase the precision on the measured angles, the EGN probes should be calibrated. 7.3.1 EGN Calibration The EGN sensors should be calibrated at first use and after each 6-12 months of use to always guarantee a good level of accuracy of the measurements.
  • Page 31 Footswitch and electrogoniometer kits Select EGN Channel 1 and press on Calibration (Figure 7.10). Figure 7.10 If the EGN probe is charged, and therefore turned on, the State icon at the top right corner of the window will be green and the Start Calibration button will be enabled. Channel 1 calibration requires the movement of the sensing block in the horizontal plane.
  • Page 32 Footswitch and electrogoniometer kits When the yellow light appears ❷, there is a 5 seconds time frame in which it is possible to move the sensing block to achieve the desired angle. First the sensing block needs to be moved at an angle of +90°, in the horizontal plane, with respect to the reference block ❸.
  • Page 33 Footswitch and electrogoniometer kits ❷ ❶ 0° ❸ ❹ Figure 7.13 ❷ ❶ -90° ❸ ❹ Figure 7.14...
  • Page 34 Footswitch and electrogoniometer kits At the end of Channel 1’s calibration process, the calculated angle offset and sensitivity are displayed. When saved, these values will be used to ensure an accurate acquisition. To save the calibration press on Ok (Figure 7.15). Figure 7.15 To complete the calibration of an electrogoniometer, both channels needs to be calibrated.
  • Page 35 Footswitch and electrogoniometer kits Channel 2 calibration requires the movement of the sensing block in the vertical plane. Click on Start Calibration to begin the calibration process (Figure 7.17). Figure 7.17 When the yellow light appears ❷, a 5 seconds time frame allows moving the sensing block to achieve the desired angle.
  • Page 36 Footswitch and electrogoniometer kits ❶ ❷ +90° ❸ ❹ Figure 7.18 ❶ ❷ 0° ❸ ❹ Figure 7.19...
  • Page 37 Footswitch and electrogoniometer kits Finally, another 5 seconds’ pause ❷ allows moving the sensing block at an angle of -90° with respect to the reference block ❸. Once again, the sensing block must be held in the selected position for 10 seconds ❹ (Figure 7.20). ❶...

  • Page 38: Troubleshooting - Egn Calibration

    Footswitch and electrogoniometer kits Figure 7.21 Figure 7.22 7.3.2 Troubleshooting - EGN calibration After the selection of the EGN Channel, if the associated State icon is red (Figure 7.23), first verify that the probe is charged and disconnected from the charger. Second, check the proper blinking of the probe’s LED (see the FSW and EGN probes status LED subsection within the Footswitch and electrogoniometer kits chapter for further information).
  • Page 39 Footswitch and electrogoniometer kits configuration section of the System use chapter). In particular, check the correctness of the serial number, type and label associated to the probe. Figure 7.23...

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