A - Human Necessities – 61 – N
Patent
A - Human Necessities
61
N
A61N 1/36 (2006.01)
Patent
CA 2110979
In conjunction with a medical device for stimulating the vagus nerve of a patient to modulate the electrical activity thereof as part of a prescribed therapy, apparatus is provided to selectively suppress the stimulation while the patient is speaking, to avoid undesirable modulation of the voice. The suppression apparatus includes a speech sensor and discriminator, to detect speech by the patient white avoiding false detection attributable to sounds other than speech. The suppression of nerve stimula- tion is ceased after a preset time interval regardless of continued detection of speech, to assure that beneficial therapy is not undu- ly inhibited in favor of mere cosmetic considerations or in the presence of prolonged false defections. In the preferred embodi- ment, the discriminator selectively varies the sensitivity of the suppression apparatus to speech by the patient to enhance its selectivity over sounds attributable to other sources. The apparatus comprises an electrode array (40), an electrical lead (42), a generator (10), and a wand (55).
Bereskin & Parr Llp/s.e.n.c.r.l.,s.r.l.
Cyberonics Inc.
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