Methods and systems for detecting the hydration of sensors
First Claim
1. A sensor system, comprising:
- a sensor configured to provide a sensor signal indicative of a physiological characteristic of a patient, the sensor including a plurality of electrodes that are configured to be implanted or disposed subcutaneously within the patient'"'"'s body so as to be in continuous contact with the patient'"'"'s bodily fluids; and
a sensor electronics device that is coupled to the sensor and includes;
an electrical detection circuit that determines whether the plurality of electrodes in the sensor are hydrated and, only after said plurality of electrodes are hydrated, generates an interrupt; and
a microcontroller that receives the interrupt from the electrical detection circuit and transmits a signal representative of a voltage to the sensor, wherein an electrode of the plurality of electrodes receives the voltage derived from the transmitted signal.
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Accused Products
Abstract
A sensor system includes a sensor and a sensor electronics device. The sensor includes a plurality of electrodes. The sensor electronics device includes a connection detection device, a power source, and a delay circuit. The connection detection device determines if the sensor electronics device is connected to the sensor and transmits a connection signal. The delay circuit receives the connection signal, waits a preset hydration time, and couples the regulated voltage from the power source to an electrode in the sensor after the preset hydration time has elapsed. Alternatively, the sensor electronics device may include an electrical detection circuit and a microcontroller. The electrical detection circuit determines if the plurality of electrodes are hydrated and generates an interrupt if the electrodes are hydrated. A microcontroller receives the interrupt and transmits a signal representative of a voltage to an electrode of the plurality of electrodes.
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Citations
19 Claims
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1. A sensor system, comprising:
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a sensor configured to provide a sensor signal indicative of a physiological characteristic of a patient, the sensor including a plurality of electrodes that are configured to be implanted or disposed subcutaneously within the patient'"'"'s body so as to be in continuous contact with the patient'"'"'s bodily fluids; and a sensor electronics device that is coupled to the sensor and includes; an electrical detection circuit that determines whether the plurality of electrodes in the sensor are hydrated and, only after said plurality of electrodes are hydrated, generates an interrupt; and a microcontroller that receives the interrupt from the electrical detection circuit and transmits a signal representative of a voltage to the sensor, wherein an electrode of the plurality of electrodes receives the voltage derived from the transmitted signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A sensor system, comprising:
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a sensor configured to provide a sensor signal indicative of a physiological characteristic of a patient, the sensor including a plurality of electrodes that are configured to be implanted or disposed subcutaneously within the patient'"'"'s body so as to be in continuous contact with the patient'"'"'s bodily fluids; and a sensor electronics device that is coupled to the sensor and includes; an electrical detection circuit that is configured to determine whether the plurality of electrodes in the sensor are hydrated and, only after said plurality of electrodes are hydrated, generates an interrupt; a microcontroller that receives the interrupt from the electrical detection circuit and transmits a signal representative of a voltage to the sensor, wherein a first electrode of the plurality of electrodes receives the voltage derived from the transmitted signal; a digital-to-analog converter (DAC) that receives the signal from the microcontroller and converts the signal into the voltage to be transmitted to said first electrode of the plurality of electrodes; and a measurement detection circuit that detects a reading of said physiological characteristic of the patient at a second electrode of the plurality of electrodes after said voltage has been transmitted to said first electrode. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19)
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Specification