Method and apparatus for detection of a respiratory waveform
First Claim
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1. A method for determining the validity of a respiratory effort waveform from a signal having non-respiratory artifacts comprising the steps of:
- (a) monitoring a respiratory effort waveform of the patient for at least one time parameter of the waveform characteristic of a non-respiratory artifact; and
(b) comparing the parameter value with a predetermined limit having as a lower limit a fixed time period and as an upper limit a time period calculated from a baseline average of the parameter, the valid respiratory waveform indicated by the parameter value being between the upper limit and lower limit.
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Abstract
A method and device for determining the validity of a respiratory effort waveform from a signal having non-respiratory artifacts includes monitoring a respiratory effort waveform for a parameter of the waveform that is characteristic of a non-respiratory artifact. The parameter is then compared with a predetermined limit to determine whether a valid respiratory waveform has been detected. This is useful for obstructive apnea treatment by electrical stimulation in order to reliably limit electrical stimulation to the inspiratory phase of the respiratory cycle.
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Citations
20 Claims
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1. A method for determining the validity of a respiratory effort waveform from a signal having non-respiratory artifacts comprising the steps of:
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(a) monitoring a respiratory effort waveform of the patient for at least one time parameter of the waveform characteristic of a non-respiratory artifact; and (b) comparing the parameter value with a predetermined limit having as a lower limit a fixed time period and as an upper limit a time period calculated from a baseline average of the parameter, the valid respiratory waveform indicated by the parameter value being between the upper limit and lower limit. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. An apparatus for determining the validity of a respiratory effort waveform from a signal having non-respiratory artifacts comprising:
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(a) monitoring means for monitoring a respiratory effort waveform of the patient for at least one time parameter of the waveform characteristic of a non-respiratory artifact; and (b) comparison means associated with said monitoring means for comparing the parameter value with a predetermined limit having as a lower limit a fixed time period and as an upper limit a time period calculated from a baseline average of the parameter, the valid respiratory waveform indicated by the parameter value being between the upper limit and lower limit. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification