Neural event detection
First Claim
1. A neural monitoring system for detecting an artificially-induced mechanical response of a muscle to an electrical stimulus provided within an intracorporeal treatment area of a human subject at a stimulation frequency, the intracorporeal treatment area including a nerve that innervates the muscle, the neural monitoring system comprising:
- a non-invasive mechanical sensor configured to be placed in mechanical communication with the muscle and to generate a mechanomyography output signal corresponding to a sensed mechanical movement of the muscle; and
a processor in communication with the mechanical sensor and configured to;
receive the mechanomyography output signal from the mechanical sensor;
determine a frequency component of the mechanomyography output signal, wherein the frequency component has a peak magnitude relative to adjacent frequencies; and
provide an indication of an artificially-induced mechanical muscle response to a user if the determined frequency component is either equal to, or an integer multiple of the stimulation frequency.
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Accused Products
Abstract
A neural monitoring system for detecting an artificially-induced mechanical muscle response to an electrical stimulus at a stimulation frequency includes a mechanical sensor and a processor in communication with the mechanical sensor. The mechanical sensor is configured to be placed in mechanical communication with the muscle and to generate a mechanomyography output signal corresponding to a sensed mechanical movement of the muscle. The processor is configured to receive the mechanomyography output signal from the mechanical sensor and determine a frequency component of the mechanomyography output signal that has a peak magnitude and to detect the occurrence of an artificially-induced mechanical muscle response therefrom.
309 Citations
19 Claims
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1. A neural monitoring system for detecting an artificially-induced mechanical response of a muscle to an electrical stimulus provided within an intracorporeal treatment area of a human subject at a stimulation frequency, the intracorporeal treatment area including a nerve that innervates the muscle, the neural monitoring system comprising:
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a non-invasive mechanical sensor configured to be placed in mechanical communication with the muscle and to generate a mechanomyography output signal corresponding to a sensed mechanical movement of the muscle; and a processor in communication with the mechanical sensor and configured to; receive the mechanomyography output signal from the mechanical sensor; determine a frequency component of the mechanomyography output signal, wherein the frequency component has a peak magnitude relative to adjacent frequencies; and provide an indication of an artificially-induced mechanical muscle response to a user if the determined frequency component is either equal to, or an integer multiple of the stimulation frequency. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A neural monitoring system for detecting an artificially-induced mechanical response of a muscle to an electrical stimulus provided within an intracorporeal treatment area of a human subject at a stimulation frequency, the intracorporeal treatment area including a nerve that innervates the muscle, the neural monitoring system comprising:
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a non-invasive mechanical sensor configured to be placed in mechanical communication with the muscle and to generate a mechanomyography output signal corresponding to a sensed mechanical movement of the muscle; and a processor in communication with the mechanical sensor and configured to; receive the mechanomyography output signal from the mechanical sensor; determine a fundamental frequency of the mechanomyography output signal; provide an indication of an artificially-induced mechanical muscle response to a user if the determined fundamental frequency is either equal to, or an integer multiple of the stimulation frequency. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17)
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18. A neural monitoring system for detecting an artificially-induced mechanical response of a muscle to an electrical stimulus provided within an intracorporeal treatment area of a human subject at a stimulation frequency, the intracorporeal treatment area including a nerve that innervates the muscle, the neural monitoring system comprising:
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a non-invasive mechanical sensor configured to be placed in mechanical communication with the muscle and to generate a mechanomyography output signal corresponding to a sensed mechanical movement of the muscle; and a processor in communication with the mechanical sensor and configured to; receive the mechanomyography output signal from the mechanical sensor; determine a frequency component of the mechanomyography output signal, wherein the frequency component has a peak magnitude relative to adjacent frequencies; and provide an indication of an artificially-induced mechanical muscle response to a user if the determined frequency component is either equal to, or an integer multiple of the stimulation frequency, and either; the determined frequency component is within the range of greater than 0 Hz to about 20 Hz;
orthe peak magnitude is above an established noise floor by a threshold amount. - View Dependent Claims (19)
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Specification