Neural event detection
First Claim
1. A neural monitoring system for detecting an artificially-induced mechanical response of a muscle to a stimulus provided within an intracorporeal treatment area of a human subject, 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 has a frequency within the range of greater than 0 Hz to about 20 Hz.
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Accused Products
Abstract
A neural monitoring system for detecting an artificially-induced mechanical muscle response to a stimulus provided within an intracorporeal treatment area 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.
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Citations
19 Claims
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1. A neural monitoring system for detecting an artificially-induced mechanical response of a muscle to a stimulus provided within an intracorporeal treatment area of a human subject, 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 has a frequency within the range of greater than 0 Hz to about 20 Hz. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A neural monitoring system for detecting an artificially-induced mechanical response of a muscle to a stimulus provided within an intracorporeal treatment area of a human subject, 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 within the range of greater than 0 Hz to about 10 Hz. - View Dependent Claims (8, 9, 10, 11, 12)
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13. A neural monitoring system for detecting an artificially-induced mechanical response of a muscle to a stimulus provided within an intracorporeal treatment area of a human subject, the intracorporeal treatment area including a nerve that innervates the muscle, the neural monitoring system comprising:
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a 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; convert the received mechanomyography output signal from a time domain to a frequency domain, wherein the frequency domain is characterized by a plurality of discrete frequencies, each having a corresponding magnitude; provide an indication of an artificially induced mechanical muscle response to a user if the magnitude of at least one of the plurality of discrete frequencies exceeds a threshold, wherein the threshold is above an established noise floor. - View Dependent Claims (14, 15, 16, 17, 18, 19)
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Specification