NEURAL MONITORING SYSTEM
First Claim
1. A neural monitoring system for detecting an induced 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 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 receiver in communication with the mechanical sensor and configured to;
receive the mechanomyography output signal from the mechanical sensor;
compute a time derivative of the sensed muscle movement from the mechanomyography output signal;
compare the computed time derivative to a first threshold; and
indicate that the sensed mechanical movement of the muscle was induced by the provided intracorporeal stimulus if the computed time derivative exceeds the first threshold.
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Accused Products
Abstract
A neural monitoring system for detecting an induced response of a muscle to a stimulus provided within an intracorporeal treatment area of a human subject includes 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 receiver in communication with the mechanical sensor. The receiver is configured to: receive the mechanomyography output signal from the mechanical sensor; compute a time derivative of the sensed muscle movement from the mechanomyography output signal; compare the computed time derivative to a threshold; and indicate that the sensed mechanical movement of the muscle was induced by the provided intracorporeal stimulus if the computed time derivative exceeds the threshold.
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Citations
20 Claims
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1. A neural monitoring system for detecting an induced 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 receiver in communication with the mechanical sensor and configured to; receive the mechanomyography output signal from the mechanical sensor; compute a time derivative of the sensed muscle movement from the mechanomyography output signal; compare the computed time derivative to a first threshold; and indicate that the sensed mechanical movement of the muscle was induced by the provided intracorporeal stimulus if the computed time derivative exceeds the first threshold. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method of detecting an induced 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 method comprising:
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receiving a mechanomyography output signal from a mechanical sensor in mechanical communication with the muscle, the mechanomyography output signal corresponding to a mechanical movement of the muscle sensed by the mechanical sensor; computing a time derivative of the sensed muscle movement from the mechanomyography output signal; comparing the computed time derivative to a first threshold; and indicating that the sensed mechanical movement of the muscle was induced by the provided intracorporeal stimulus if the computed time derivative exceeds the first threshold. - View Dependent Claims (14, 15, 16, 17, 18)
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19. A neural monitoring system for detecting an induced 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 receiver in communication with the mechanical sensor and configured to; receive the mechanomyography output signal from the mechanical sensor; determine a magnitude of acceleration of the muscle from the mechanomyography output signal; determine a magnitude of the provided intracorporeal stimulus; compute a time derivative of the sensed muscle movement from the mechanomyography output signal; compare the computed time derivative to a first threshold; determine a proximity between the stimulator and the nerve from the magnitude of the provided intracorporeal stimulus and the magnitude of acceleration of the muscle; compare the determined proximity to a second threshold; and provide an alert if the determined proximity is less than the second threshold and the computed time derivative exceeds the first threshold. - View Dependent Claims (20)
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Specification