System and method for sensor recalibration
First Claim
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1. An implantable sensing system comprising:
- a sensor for sensing a biological parameter;
a processor connected to the sensor for processing the parameter; and
a drug delivery unit connected to the processor for responding to the processor based on the parameter;
wherein the processor is programmed to adjust an output of the sensor by;
adjusting a calibration curve, wherein the adjusting of the calibration curve includes;
compiling an array of data relating to the sensor;
adjusting a sensor parameter, wherein the sensor parameter affects the calibration curve, a first time based on data in the array, whereby the calibration curve is adjusted a first time;
adjusting the shape of the calibration curve, whereby the calibration curve is adjusted a second time; and
after adjusting the shape of the calibration curve, adjusting the sensor parameter a second time based on the data in the array, whereby the calibration curve is adjusted a third time; and
calculating an adjusted sensor output based on the adjusted calibration curve, wherein the calculating of the adjusted sensor output is performed only after the calibration curve has been adjusted a third time.
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Abstract
An implantable sensing system that includes a sensor for sensing a biological parameter, a processor connected to the sensor for processing the parameter and a drug delivery unit connected to the processor for responding to the processor based on the parameter. The processor is programmed to adjust an output of the sensor by compiling an array of data relating to the sensor, adjusting a sensor parameter a first time based on data in the array, adjusting a curve representing the sensor output based on data in the array and adjusting the sensor parameter a second time based on data in the array.
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Citations
19 Claims
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1. An implantable sensing system comprising:
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a sensor for sensing a biological parameter; a processor connected to the sensor for processing the parameter; and a drug delivery unit connected to the processor for responding to the processor based on the parameter; wherein the processor is programmed to adjust an output of the sensor by; adjusting a calibration curve, wherein the adjusting of the calibration curve includes; compiling an array of data relating to the sensor; adjusting a sensor parameter, wherein the sensor parameter affects the calibration curve, a first time based on data in the array, whereby the calibration curve is adjusted a first time; adjusting the shape of the calibration curve, whereby the calibration curve is adjusted a second time; and after adjusting the shape of the calibration curve, adjusting the sensor parameter a second time based on the data in the array, whereby the calibration curve is adjusted a third time; and calculating an adjusted sensor output based on the adjusted calibration curve, wherein the calculating of the adjusted sensor output is performed only after the calibration curve has been adjusted a third time. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. An implantable sensing system comprising:
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a sensor for sensing a biological parameter; a processor connected to the sensor for processing the parameter; and a drug delivery unit connected to the processor for responding to the processor based on the parameter; wherein the processor is programmed to adjust an output of the sensor by; adjusting a calibration curve, wherein the adjusting of the calibration curve includes; compiling an array of data relating to the sensor; generating a calibration curve; adjusting a nominal output current of the calibration curve, wherein the nominal output current affects the calibration curve, a first time based on data in the array, whereby the calibration curve is adjusted a first time; adjusting the shape of the calibration curve, whereby the calibration curve is adjusted a second time, wherein the adjusting the shape of the calibration curve includes performing a linear regression on data in the array and wherein a result of the linear regression determines a first calibration point; after adjusting the shape of the calibration curve, adjusting the nominal output current a second time based on the data in the array, whereby the calibration curve is adjusted a third time; and calculating an adjusted sensor output based on the adjusted calibration curve, wherein the calculating of the adjusted sensor output is performed only after the calibration curve has been adjusted a third time.
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Specification