Title :
The design of output stage circuitry for constant current neuromuscular stimulation
Author :
Alm, A.C. ; Triolo, R.J. ; Kobetic, R. ; Smith, B. ; Buckett, J.R. ; Borges, G.
Author_Institution :
Shriners Hospital for Crippled Children, Philadelphia, PA, USA
Abstract :
A 16-channel analog hybrid circuit has been designed, manufactured, and tested to provide functional neuromuscular stimulation to individuals with spinal cord injuries. The circuit generates a constant current, charge balanced, biphasic, asymmetrical waveform for both percutaneous and surface stimulation via the use of external current setting resistors, capacitors, and control circuitry. Currents from 1 to 100 mA have been achieved with pulsewidths from 1 to 255 ms and interpulse intervals of 20-100 ms. The analog hybrid circuit is packaged in a 32-pin pin-grid-array package approximately 0.9 in.×0.9 in.×0.2 in. in size
Keywords :
bioelectric phenomena; biomedical electronics; muscle; neurophysiology; orthotics; 1 to 100 mA; 1 to 255 ms; 16-channel analog hybrid circuit; 20 to 100 ms; biphasic asymmetrical waveform; constant current neuromuscular stimulation; functional neuromuscular stimulation; interpulse interval; output stage circuitry; percutaneous stimulation; pin-grid-array package; surface stimulation; Capacitors; Circuit testing; Electrodes; Hospitals; Manufacturing; Muscles; Neuromuscular stimulation; Packaging; Resistors; Voltage;
Conference_Titel :
Engineering in Medicine and Biology Society, 1989. Images of the Twenty-First Century., Proceedings of the Annual International Conference of the IEEE Engineering in
Conference_Location :
Seattle, WA
DOI :
10.1109/IEMBS.1989.96081
