Myolab II EMG Tester and Trainer



Testing for the best EMG signal using the Myolab II

When used with the Utah Arm, troubleshooting is made easier because EMG signals can be monitored while the prosthesis is operating. Because the preamp signals can be monitored from inside the socket, the Myolab II is perfect for establishing the gain adjustments of the Utah Arm and for use as a training aid for patients. Small enough to slip into a lab coat pocket, you can carry the Myolab II anywhere.

For Biofeedback Training

The Myolab’s dual meters and audio signals let clients see and hear their muscles as they work -- it’s the ultimate biofeedback device. The Myolab is perfect as a diagnostic aid and for muscle strengthening or relaxation training. It is also an invaluable coordination tool to train clients to work specific muscles alternately or together. The electrodes give an immediate reading after being placed on the skin- no gels are necessary.

The EMG Preamplifier, the heart of the Myolab II and the Utah Arm, can be purchased separately for use with a variety of clinical signal processing systems. The small device provides on-site amplification and band pass filtering to ensure that EMG signals are uninterrupted by electrical interference. The integral electrodes may be detached from the preamplifier for remote or dispersed placement if desired. Gel and other electrode preparations are usually not required. The individually packaged preamplifiers are supplied without connectors.

The Myolab II

EMG Tester and Trainer
for fitting myoelectric prostheses

The Myolab II was specifically designed for use by Certified Prosthetists in fitting and troubleshooting myoelectric prostheses such as the Utah Arm. Before fitting, the Myolab II can be used to locate intact muscle activity.

EMG Preamplifier Specifications

• Gain: 375 nominal at 300 Hz

• Input Impedance: 1012 ohms

• Input Noise: <1.5 microvolts RMS nominal @ +6VDC supply voltage

• Common mode rejection ratio: >100db @ 60 Hz @+9VDC supply voltage

• Bias current: 1 picoamp

• Supply voltage: ± 4 to ± 14 volts

• Filtering: 1st order, high pass at 10Hz/ 1st order, low pass at 10kHz

• Output impedance: < 1 ohm

• Output current: 6mA

• Output voltage: @ ± 9V supply voltage -7.5V output

• Cord: Sold in two lengths of shielded cable:

  • Myolab preamps = 2m (6 ft.)

  • Individual preamps = 6 m (20 ft.)

• Preamp size: 5.0 cm (L) x 1.8 cm (W) x 0.7 cm (H)
  [2.0 x 0.63 x 0.28 in.]

• Weight: 22 grams (0.78 oz.)