Signal Quality Monitoring And Control For A Medical Device System
First Claim
1. In a medical device system having a plurality of monitoring elements providing signals, a method for detecting poor signal quality comprising:
- (a) receiving a neurological signal from one of the plurality of monitoring elements;
(b) determining a plurality of data points for a first variable associated with the signal quality of the neurological signal;
(c) determining a plurality of data points for a second variable associated with the signal quality of the neurological signal;
(d) detecting that the received neurological signal has poor signal quality by determining that an amount of the data points from the first variable has exceeded a predetermined threshold; and
(e) signal processing the signals from the plurality of monitoring elements, the signal processing ignoring the received neurological signal experiencing poor signal quality.
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Abstract
Method and apparatus for detecting possible interference in a neurological signal received from a monitoring element of a medical device system. The monitoring element monitors a condition or a symptom of a nervous system disorder being treated and provides a neurological signal to the medical device system for purposes of providing closed-loop feedback control. The system analyzes various parameters of the received signal by taking instantaneous measurements of data points in moving window and thereby determining whether the signal is of poor quality. If the signal is of determined poor quality, it is removed from consideration in the closed-loop feedback control system until it is determined that the signal quality has sufficiently been restored.
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Citations
25 Claims
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1. In a medical device system having a plurality of monitoring elements providing signals, a method for detecting poor signal quality comprising:
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(a) receiving a neurological signal from one of the plurality of monitoring elements;
(b) determining a plurality of data points for a first variable associated with the signal quality of the neurological signal;
(c) determining a plurality of data points for a second variable associated with the signal quality of the neurological signal;
(d) detecting that the received neurological signal has poor signal quality by determining that an amount of the data points from the first variable has exceeded a predetermined threshold; and
(e) signal processing the signals from the plurality of monitoring elements, the signal processing ignoring the received neurological signal experiencing poor signal quality. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A medical device system for managing a nervous system disorder and capable of detecting poor signal quality comprising in combination:
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a first monitoring element for generating a signal and a second monitoring element for generating a neurological signal of a sensed neurological condition;
an analog to digital converter for converting the generated neurological signal;
a processor in communication with the analog to digital converter; and
a memory including a first software module for monitoring a first quality variable of the neurological signal and a second software module for monitoring a second quality variable of the neurological signal, the memory including computer executable instructions for causing the processor to;
(a) determine a plurality of instantaneous data points of the generated neurological signal for both of the first and the second quality variable;
(b) detect that the received signal has poor signal quality by determining that an amount of the data points from the first quality variable has exceeded a predetermined threshold; and
(c) ignore the generated neurological signal from the second monitoring element experiencing poor signal quality in signal processing. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 24, 25)
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Specification