Surgery – Truss – Pad
Patent
1981-04-09
1983-10-11
Kamm, Wm. E.
Surgery
Truss
Pad
A61N 130
Patent
active
044086083
ABSTRACT:
There is disclosed an implantable tissue-stimulating prosthesis, such as a cochlear prosthesis, which can not only be implemented in single-chip form, but which also permits great flexibility in stimulation strategy and data transmission format. Only sixteen electrodes are required for stimulating fifteen different sites. Each site is stimulated by a biphasic pulse under control of two adjacent electrodes whose polarities are reversed in the middle of the site stimulation cycle. Although the transmission scheme requires a pulse-width modulation format, the precise form of the format can be varied in order to accommodate widely different stimulation strategies. For example, only a single site may be stimulated during each transmission frame or multiple sites may be stimulated during the same frame. Although only one site can be stimulated at any instant of time, the system cycling is so fast that "simultaneous" site stimulations are perceived. The system is designed for minimum power usage, and its operation is fail-safe in that no site may be stimulated for longer than a pre-set time interval.
REFERENCES:
patent: 3662758 (1972-05-01), Glover
patent: 3667477 (1972-06-01), Susset et al.
patent: 3727616 (1973-04-01), Lenzkes
patent: 4019518 (1977-04-01), Maurer et al.
Daly Christopher N.
Money David K.
Kamm Wm. E.
Telectronics Pty. Ltd.
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