Method and apparatus for providing dynamic multi-stage amplification in a medical device
First Claim
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1. A method of processing signals from a glucose sensor, comprising:
- coupling a first amplifier that includes an output terminal that provides a first output signal, to a signal source;
coupling a second amplifier that includes an output terminal that provides a second output signal, to the output terminal of the first amplifier, wherein the first output signal is a predetermined ratio of the second output signal, and the first output signal and the second output signal are associated with an in vivo monitored glucose level;
operatively coupling an analog to digital (ND) converter to the output terminal of the second amplifier;
comparing signals at the second amplifier output terminal to a predetermined threshold value; and
processing a signal associated with the signals at the second amplifier output terminal when another signal at the second amplifier output terminal exceeds the predetermined threshold value.
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Abstract
Methods and apparatus for providing multi-stage signal amplification in a medical telemetry system are provided.
557 Citations
31 Claims
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1. A method of processing signals from a glucose sensor, comprising:
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coupling a first amplifier that includes an output terminal that provides a first output signal, to a signal source; coupling a second amplifier that includes an output terminal that provides a second output signal, to the output terminal of the first amplifier, wherein the first output signal is a predetermined ratio of the second output signal, and the first output signal and the second output signal are associated with an in vivo monitored glucose level; operatively coupling an analog to digital (ND) converter to the output terminal of the second amplifier; comparing signals at the second amplifier output terminal to a predetermined threshold value; and processing a signal associated with the signals at the second amplifier output terminal when another signal at the second amplifier output terminal exceeds the predetermined threshold value. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. An apparatus for processing signals from a glucose sensor, comprising:
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a first amplifier that includes an output terminal that provides a first output signal coupled to a signal source; a second amplifier that includes an output terminal that provides a second output signal coupled to the output terminal of the first amplifier, wherein the first output signal is a predetermined ratio of the second output signal, and the first output signal and the second output signal are associated with an in vivo monitored glucose level; an analog to digital (A/D) converter operatively coupled to the output terminal of the second amplifier; and a processing unit operatively coupled to one or more of the first amplifier, the second amplifier and the analog to digital converter to compare signals at the second amplifier output terminal to a predetermined threshold value, and to process a signal associated with the signals at the second amplifier output terminal when another signal at the second amplifier output terminal exceeds the predetermined threshold value. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31)
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Specification