Surgery: light – thermal – and electrical application – Light – thermal – and electrical application – Electrical therapeutic systems
Patent
1994-11-14
1996-04-30
Cohen, Lee S.
Surgery: light, thermal, and electrical application
Light, thermal, and electrical application
Electrical therapeutic systems
607 62, 607 66, 607 70, A61N 136, A61N 100
Patent
active
055120571
ABSTRACT:
An interferential stimulation device for providing transcutaneous electrical nerve stimulation to a living body. The device applies current at two difference frequencies, each across two contact points on the body, spaced about a selected crossing point. The different frequencies produce at the crossing point a low frequency beat by the heterodyne process for specific stimulation at the crossing point. Electronic circuitry is provided to generate the desired signals and apply them through body contacting pads. Several modes for changing the stimulation smoothly, with the interference beat frequency ramped over a selected range over a selected time period provides superior results and prevents accommodation to the device. Several different ramp beat frequency ranges are provided, including a long range ramp, a relatively low frequency ramp and a relatively high frequency ramp.
REFERENCES:
patent: 4769881 (1988-09-01), Pedigo et al.
patent: 4848347 (1989-07-01), Hall
patent: 5161530 (1992-11-01), Gamble
Lafreniere Bernard
Reiss Hans W.
Cohen Lee S.
Duncan John R.
Gilliam Frank D.
Huang Stephen
Medserv Group, Inc.
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