System for recording electroneurographic activity
First Claim
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1. A system for recording electroneurographic activity, comprising:
- at least three electrodes, adapted to be placed along the longitudinal orientation of a peripheral nerve, said electrodes including end electrodes and a center electrode positioned between the end electrodes, the electrodes being capable of sensing a nerve signal, the end electrodes being connected to each other;
a control device comprising at least one circuit and being configured to measure a differential interference voltage between the end electrodes, receive and process the sensed nerve activity between the center electrode and one or more of the end electrodes, and produce a control signal in response thereto for controlling an external device;
a regulated bipolar current or voltage source that, based on the differential measured interference voltage between the end electrodes, applies a corresponding differential voltage or current of reverse polarity to the end electrodes to cancel the interference voltage, between the end electrodes without canceling nerve signals measured between the center electrode and one or more of the end electrodes such that the system actively rejects signals originating from biological interference sources that are separate from the sensed nerve signal without affecting a measurement of electroneurographic activity.
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Abstract
A system for recording electroneurographic activity comprising at least three neurosense electrodes capable of sensing a nerve signal from a peripheral nerve and means for receiving and processing the sensed nerve signal to identify a signal indicative of a specific action being a movement of a body part performed by the patient and for producing a control signal in response thereto featuring means for rejection of signals originating from biological interference sources without affecting the electroneurographic activity measured.
7 Citations
14 Claims
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1. A system for recording electroneurographic activity, comprising:
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at least three electrodes, adapted to be placed along the longitudinal orientation of a peripheral nerve, said electrodes including end electrodes and a center electrode positioned between the end electrodes, the electrodes being capable of sensing a nerve signal, the end electrodes being connected to each other; a control device comprising at least one circuit and being configured to measure a differential interference voltage between the end electrodes, receive and process the sensed nerve activity between the center electrode and one or more of the end electrodes, and produce a control signal in response thereto for controlling an external device; a regulated bipolar current or voltage source that, based on the differential measured interference voltage between the end electrodes, applies a corresponding differential voltage or current of reverse polarity to the end electrodes to cancel the interference voltage, between the end electrodes without canceling nerve signals measured between the center electrode and one or more of the end electrodes such that the system actively rejects signals originating from biological interference sources that are separate from the sensed nerve signal without affecting a measurement of electroneurographic activity. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A system for recording electroneurographic activity while rejecting signals originating from biological interference sources that are separate from the sensed nerve signal without affecting the measurement of electroneurographic activity, said system comprising:
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a plurality of electrodes adapted to be placed along a longitudinal orientation of a peripheral nerve and configured to sense a nerve signal, the plurality of electrodes including end electrodes connected to each other and a center electrode positioned between the end electrodes; a control device configured to; measure a differential interference voltage of biological interference sources between the end electrodes; receive and process the sensed nerve activity between the center electrode and one or more of the end electrodes; produce a control signal in response to said sensed nerve activity for controlling an external device; a regulated bipolar current or voltage source operable to apply a corresponding differential voltage or current of reverse polarity to the end electrodes to cancel the interference voltage between the end electrodes without canceling nerve signals measured between the center electrode and one or more of the end electrodes, the differential voltage or current of reverse polarity being based on the differential interference voltage of the biological interference sources measured between the end electrodes. - View Dependent Claims (14)
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Specification