A - Human Necessities – 61 – N
Patent
A - Human Necessities
61
N
A61N 1/36 (2006.01) A61N 1/08 (2006.01)
Patent
CA 2043813
OUTPUT PULSE COMPENSATION FOR THERAPEUTIC-TYPE ELECTRONIC DEVICES Abstract of the Disclosure Pulse compensation is disclosed for electronic devices capable of producing a pulse output signal suitable for therapeutic purposes with pulse compensation being automatically provided upon sensing of a change in the conditions being monitored. The electronic device, which preferably includes a micro-computer, has externally accessible pulse width and intensity controls for determining the width and amplitude of pulses then being delivered. Upon each sensing of a change in a monitored condition capable of causing user discomfort or possible injury, the intensity of the pulses then being delivered is quickly reduced and then gradually increased toward the full intensity requested by the intensity control. Pulse compensation is also provided when the pulse width is varied by the pulse width control to thereby automatically cause a corresponding change in the range of intensities of the pulses then delivered, based upon a nerve fiber strength-duration curve of the pulses, to thereby maintain the stimulation capability of the pulses substantially constant at a percentage of intensity as determined by the intensity control.
Harris Frank W.
Owens Alan R.
Macrae & Co.
Staodyn Inc.
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