Analyte sensor
First Claim
1. A sensor for implantation within a living animal and measurement of an analyte in a medium within the living animal, the sensor comprising:
- an analyte indicator configured to exhibit a detectable property based on the amount or concentration of the analyte in the medium;
sensor elements configured to generate an analyte measurement signal based on the detectable property exhibited by the analyte indicator;
an inductive element configured to produce a current when in an electrodynamic field generated by an external device;
an input/output circuit configured to wirelessly convey measurement information to the external device via the inductive element;
a measurement controller;
a charge storage device; and
a power switch configured to switch at least the sensor elements between being powered by the charge storage device and being powered by an externally supplied electrodynamic field;
wherein the measurement controller is configured to;
(i) control the sensor elements to generate a first analyte measurement signal using power provided by the charge storage device while the inductive element is not in an electrodynamic field generated by the external device;
(ii) generate first measurement information based on the first analyte measurement signal;
(iii) control the input/output circuit to wirelessly convey the first measurement information to the external device while the inductive element is in an electrodynamic field generated by the external device;
(iv) control the sensor elements to generate a second analyte measurement signal using power provided by an electrodynamic field generated by the external device while the inductive element is in the electrodynamic field;
(v) generate second measurement information based on the second analyte measurement signal; and
(vi) control the input/output circuit to wirelessly convey the second measurement information to the external device while the inductive element is in an electrodynamic field generated by the external device.
12 Assignments
0 Petitions
Accused Products
Abstract
Sensors and methods for measurement of an analyte in a medium within a living animal are described. The sensor may include an inductive element that may receive power from an external device. The sensor may also include a charge storage device (CSD) and a memory. The sensor may perform analyte measurements initiated by the external device using power received from the external device and convey the analyte measurements to the external device using the inductive element. The sensor also may perform autonomous analyte measurements using the on board charge device'"'"'s power and store the autonomous analyte measurements in the memory. The sensor may convey one or more stored analyte measurements to the external device using the inductive element using power received from the external device. The sensor may include a CSD-powered clock and a CSD-powered measurement scheduler that initiate the autonomous analyte measurements.
-
Citations
28 Claims
-
1. A sensor for implantation within a living animal and measurement of an analyte in a medium within the living animal, the sensor comprising:
-
an analyte indicator configured to exhibit a detectable property based on the amount or concentration of the analyte in the medium; sensor elements configured to generate an analyte measurement signal based on the detectable property exhibited by the analyte indicator; an inductive element configured to produce a current when in an electrodynamic field generated by an external device; an input/output circuit configured to wirelessly convey measurement information to the external device via the inductive element; a measurement controller; a charge storage device; and a power switch configured to switch at least the sensor elements between being powered by the charge storage device and being powered by an externally supplied electrodynamic field; wherein the measurement controller is configured to; (i) control the sensor elements to generate a first analyte measurement signal using power provided by the charge storage device while the inductive element is not in an electrodynamic field generated by the external device; (ii) generate first measurement information based on the first analyte measurement signal; (iii) control the input/output circuit to wirelessly convey the first measurement information to the external device while the inductive element is in an electrodynamic field generated by the external device; (iv) control the sensor elements to generate a second analyte measurement signal using power provided by an electrodynamic field generated by the external device while the inductive element is in the electrodynamic field; (v) generate second measurement information based on the second analyte measurement signal; and (vi) control the input/output circuit to wirelessly convey the second measurement information to the external device while the inductive element is in an electrodynamic field generated by the external device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25)
-
-
26. A sensor for implantation within a living animal and measurement of an analyte in a medium within the living animal, the sensor comprising:
-
an analyte indicator configured to exhibit a detectable property based on the amount or concentration of the analyte in the medium; sensor elements configured to generate an analyte measurement signal based on the detectable property exhibited by the analyte indicator; an inductive element configured to produce a current when in an electrodynamic field generated by an external device; an input/output circuit configured to wirelessly convey measurement information to the external device via the inductive element; a measurement controller; a charge storage device; a clock that is powered by the charge storage device; and a measurement scheduler that is powered by the charge storage device and configured to issue a first autonomous measurement command based on an output of the clock, wherein the measurement controller is configured to; (i) control the sensor elements to generate a first analyte measurement signal using power provided by the charge storage device while the inductive element is not in an electrodynamic field generated by the external device or using power provided by an electrodynamic field generated by the external device while the inductive element is in the electrodynamic field; (ii) generate first measurement information based on the first analyte measurement signal; and (iii) control the input/output circuit to wirelessly convey the first measurement information to the external device while the inductive element is in an electrodynamic field generated by the external device; and wherein the measurement controller is configured to control the sensor elements to generate the first analyte measurement signal in response to the first autonomous measurement command. - View Dependent Claims (27, 28)
-
Specification