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ODFS PACE - Stimulator (Odstock Dropped Foot Stimulator)

The Odstock Dropped Foot Stimulator is an electronic device, designed to assist people who have a dropped foot due to neurological damage to walk.

By stimulating the common peroneal nerve at its most superficial point, passing over the head of the fibula bone, it is possible to cause dorsiflexion with degrees of hip and knee flexion. This is through excitation of the withdrawal reflex.
If this is timed with walking using a foot switch worn in the shoe, walking can be significantly improved.

ODFS PACE Stimulator

ODFS PACE Stimulator
Specifications:
  • Output: asymmetrical or symmetrical biphasic voltage driven wave form;
  • Output amplitude: 10 to 100mA into a 1kOhm load with an asymmetrical biphasic output, 10mA to 70mA in symmetrical biphasic mode;
  • Frequency: 20-60 Hz;
  • Pulse width: 0 to 350 micro seconds;
  • Output time: 0.5 to 6 seconds;
  • Extension time: 0 to 1.5 seconds;
  • Ramping times: 0 to 2 seconds;
  • Battery: PP3, 9V.
*All specifications ± 10%.

Example:
Improved gait in a CVA patient

Steps sequence while stimulation is OFF
Steps sequence while stimulation is OFF

Improved dorsiflexion while using the ODFS Improved dorsiflexion while using the ODFS

For one of our patients, the speed test revealed 10-12% increase in walking speed and a 20% decrease in walking effort (PCI measurements - Physiological Cost Index) while using the ODFS.

Download ODFS PACE Manual (pdf)
    ODFS PACE manufacturer's web page
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