Surgery – Truss – Pad
Patent
1985-09-06
1990-08-14
Kamm, William E.
Surgery
Truss
Pad
A61N 132
Patent
active
049478443
ABSTRACT:
A device for controlling stimulating currents in prosthetic devices in which a series of short spaced current pulses are delivered to electrodes with intervals between the pulses of zero current having a duration longer than that of each spaced pulse, the waveform of the stimulus current comprising a series of said spaced pulses of one polarity followed by an equal number of said spaced pulses of opposite polarity whereby the sum of all of the electrical charge transferred through each electrode is approximately zero at the end of a stimulating current waveform. In a hearing prosthesis in which bipolar pairs of electrodes are used to stimulate hearing nerves, the spaced pulses are delivered cyclically to the bipolar pairs of electrodes whereby the spaced pulses are delivered to one electrode pair during the zero current periods of the spaced pulses delivered to another electrode pair whereby the electrical stimulation caused by said electrodes is substantially simultaneous.
REFERENCES:
patent: 3766331 (1973-10-01), Zink
patent: 4200108 (1980-04-01), Weigert
patent: 4400590 (1983-08-01), Michelson
patent: 4406658 (1983-09-01), Lattin et al.
patent: 4428377 (1984-01-01), Zollner et al.
patent: 4510936 (1985-04-01), Fourcin et al.
patent: 4532930 (1985-08-01), Crosby et al.
patent: 4592359 (1986-06-01), Galbraith
Kamm William E.
The University of Melbourne
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