Abstract
The Duo-STIM, a new, programmable and portable neuromuscular stimulation system for drop foot correction and blood flow assist applications is presented. The system consists of a programmer unit and a portable, programmable stimulator unit. The portable stimulator features fully programmable, sensor-controlled, constant-voltage, dual-channel stimulation and accommodates a range of customized stimulation profiles. Trapezoidal and free-form adaptive stimulation intensity envelope algorithms are provided for drop foot correction applications, while time dependent and activity dependent algorithms are provided for blood flow assist applications. A variety of sensor types can be used with the portable unit, including force sensitive resistor-based foot switches and MEMS-based accelerometer and gyroscope devices. The paper provides a detailed description of the hardware and block-level system design for both units. The programming and operating procedures for the system are also presented. Finally, functional bench test results for the system are presented.
Original language | English |
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Pages (from-to) | 400-408 |
Number of pages | 9 |
Journal | Medical Engineering and Physics |
Volume | 31 |
Issue number | 3 |
DOIs | |
Publication status | Published - Apr 2009 |
Keywords
- Adaptive stimulation
- Blood flow
- Drop foot
- Electrical stimulation
- NMES
- Portable
- Programmable
- Rehabilitation
- Stimulator