FREQUENCY SELECTIVE MONITORING OF PHYSIOLOGICAL SIGNALS
First Claim
1. A physiological signal monitoring device comprising:
- a physiological sensing element that receives a physiological signal;
a heterodyning circuit configured to convert a selected frequency band of the physiological signal to a baseband; and
a signal analysis unit that analyzes a characteristic of the signal in the selected frequency band.
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Accused Products
Abstract
In general, the disclosure is directed to a frequency selective monitor and methods for monitoring physiological signals in one or more selected frequency bands. A frequency selective monitor may utilize a heterodyning, chopper-stabilized amplifier architecture to convert a selected frequency band to a baseband for analysis. The frequency selective monitor may be useful in a variety of therapeutic and/or diagnostic applications. As examples, a frequency selective signal monitor may be provided within a medical device or within a sensor coupled to a medical device. The physiological signal may be analyzed in one or more selected frequency bands to trigger delivery of patient therapy and/or recording of diagnostic information.
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Citations
41 Claims
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1. A physiological signal monitoring device comprising:
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a physiological sensing element that receives a physiological signal; a heterodyning circuit configured to convert a selected frequency band of the physiological signal to a baseband; and a signal analysis unit that analyzes a characteristic of the signal in the selected frequency band. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method for monitoring a physiological signal, the method comprising:
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receiving a physiological signal; converting, with a heterodyning circuit, a selected frequency band of the physiological signal to a baseband; and analyzing a characteristic of the signal in the selected frequency band. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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25. A physiological signal monitoring device comprising:
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means for receiving a physiological signal; means for converting, with a heterodyning circuit, a selected frequency band of the physiological signal to a baseband; and means for analyzing a characteristic of the signal in the selected frequency band. - View Dependent Claims (26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36)
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37. A medical device comprising:
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a physiological signal monitoring unit comprising; a physiological sensing element that receives a physiological signal, a heterodyning circuit configured to covert a selected frequency band of the physiological signal to a baseband, and a signal analysis unit that analyzes a characteristic of the signal in the selected frequency band, and generates a trigger signal triggering control of therapy to the patient based on the analyzed characteristic; and a therapy delivery module that controls the therapy in response to the trigger signal. - View Dependent Claims (38, 39, 40, 41)
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Specification