|
 |
Home › EMG Analysis: BTS FreeEMG
BTS FreeEMG
Portable Surface EMG System using Wireless Probes
BTS FreeEMG represents a generational leap in the diagnostic
devices technology for surface electromyography analysis during motion.
Employing entirely on wireless technologies, BTS FreeEMG is the first electromyography unit in the world using 16 miniaturized probes with active electrodes weighing just 8 grams.
The probes communicate with a mobile receiving unit, that is compact and light (240 grams). It can be belt-worn by the patient, placed on the table or held by the doctor.
The complete absence of wiring allows for a quick setup of patients and offers them the most comfort: they can move freely without cable obstruction and without the need to carry an interface pack on the body.
The small size and the insignificant weight of the flexible probes allow for unrestricted analysis of every kind of movement (walking, running, jumping, etc.). Several hours of data can be recorded thanks to the use of environmentally friendly rechargeable batteries.
The FreeEMG is typically used to for evaluations in
- Ergonomics
- Gait analysis
- Physical Therapy, Orthopedics and Rehabilitation
- Biomechanics and Kinesiology
- Sport, Human Performance and Exercise Science
The FreeEMG is supplied with either BTS Myolab or BTS EMGenius, two powerful BTS software applications for displaying, processing and reporting EMG signals.
BTS Myolab with its several analysis options is a flexible software solution providing advanced EMG analysis, including measurement of localized muscle fatigue.
BTS FreeEMG together with BTS Myolab are used for a wide range of applications such as research, sports, occupational medicine, genatology, neurology and orthopedics.
BTS EMGenius includes main protocols for the functional evaluation of cycle movements (such as gait) and, in combination with foot switches, can automatically identify events and generate normalized cycle data.
With BTS EMGenius, BTS FreeEMG becomes the most advanced diagnostic tool available today for clinical laboratories that need to evaluate neurological and orthopaedic pathologies, pharmacological therapies, motor deficit progression and to carry out rehabilitative follow-ups.
Main features:
One of the most advanced EMG unit in the world
The BTS FreeEMG incorporates newest technology. Totally wireless, it comes with active and flexible EMG probes, just 7.5 grams in weight. The A/D conversion occurs in the electrodes, data is sent digitally to the receiving/patient unit.
Quicker and more accurate analysis
The total absence of cables allows for a quick patient setup. The probes are simply attached directly to the pre-gelled electrodes without any additional fixing. The patient can move without encumbrance.
Powerful and complete
16 EMG channels + 8 auxiliary channels dedicated
for wireless foot switches, wireless electrogoniometers or wireless accelerometers.
Reliable
The adopted technologic solutions, the 4KHz frequency and the
16 bit resolution for each channel, assure the highest quality of the acquired signal both in terms of low noise and the absence of movement artefacts.
Easy to use
Patient and protocol setup is controlled by the data station (desktop or laptop) or the mobile sending/receiving unit, which is equipped with a high-resolution touch screen display and intuitive graphic interface.
Prolonged battery life
4 hrs. in non-stop acquisition, up to 18 days in stand-by mode.
Easy and quick recharge by connecting the electrodes to the proper battery charger.
Extended range
Range of the signal:
up to 30 meters for the transmission between the probes and the receiving unit;
up to 350 meters for the data transfer from the receiving unit to the data station (desktop or laptop).
Compatibility & Integration
Seamless integration with movement analysis, posturometry and stabilometry systems.
Technical Features:
Wireless electrodes
- Electrodes with variable geometry and clip connection
- A/D conversion onboard
- 16-bit resolution - acquisition frequency up to 4KHz
- Fine-wire electrodes, 16-bit resolution - acquisition
- frequency up to 4KHz
- High-pass filter with cut off frequency of 16 hz
- Wireless IEEE802.15.4 (electrodes to receiving unit)
- Rechargeable batteries with charging unit (clip connector)
- 4hrs in non-stop, 18 days in stand-by mode, 1 year in sleep mode
- Range - up to 30 meters from electrodes to patient unit
- LED Acquisition/stand-by, low battery indicator
- Batteries can be switched off
- Weight is 8 grams, battery inclusive
- 17x36x8mm mother electrode
- Ø 17x 8mm satellite electrode
Mobile receiving unit
- Up to 16 wireless EMG electrodes
- 4khz acquisition frequency for all 16 EMG channels
- 3 different gain settings
- Input impedance is >10^12 ohm
- CMR virtually infinite
- 8 auxiliary channels for the connections to electrogoniometers, foot switches, accelerometers, and pressure measurement insoles
- Wireless WiFi standard 802.11b (receiving unit - data station)
- 4″ VGA touch-screen
- Use of up to 8GB SD cards ensure for prolonged local data collection on mobile receiving unit. With a 2GB SD card and a frequency of 1,000 hz data collection for 36 hours on all 16 channels is possible
- Up to 24 hours with a set of rechargeable batteries
- Up to 8 hours with a single battery
- Non-stop with the net feeder (desk-mode)
- Range - up to 350 meters from receiving unit to computer system
- Weight is 240 grams - 152x82x22.5mm
BTS Data Station
Windows based desktop or laptop PC dedicated to handle electromyography signal processing and wireless communications with the receiving unit.
Software BTS Myolab/Myolab Clinic
Data acquisition, representation and elaboration using drag&drop functionality.
Oscilloscope for the real-time visualization of the signals.
Database for data organization.
Integration with video recording in MPEG2 synchronized with electromyography signals.
Analysis of the localized muscular fatigue phenomena. (Myolab)
Protocol for walking functional evaluation. (only Myolab Clinic)
Options
Wireless Foot Switch Probes
Independent sensors for the automatic identification of the gait phases.
Up to 8 individual switches for each probe.
Wireless Electrogoniometer Probes
Strain gauge technology for the careful measurement of the angles described by the articulations in the different
planes.
Wireless Accelerometer Probes
|
