Methods and Devices for Sensing Device Signal Correction
First Claim
1. A method of correcting a signal in a sensing device, comprising the steps of:
- providing a sensing device comprising a sensor, a first electrical pad, a second electrical pad, and a continuous polymer layer contacting at least a portion of the first and second electrical pads;
applying a potential across the first and second electrical pads;
measuring an electrical property associated with the continuous polymer layer;
determining a correction factor associated with the measured electrical property; and
applying the correction factor to a signal generated by the sensor to produce a corrected signal.
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Abstract
Methods and devices for correcting sensing device signals, e.g., for point of care immunoassay devices. In one embodiment, the invention is to a method of correcting a signal in a sensing device, comprising the steps of: providing a sensing device comprising a sensor, a first electrical pad, a second electrical pad, and a continuous polymer layer contacting at least a portion of the first and second electrical pads; applying a potential across the first and second electrical pads; measuring an electrical property associated with the continuous polymer layer; determining a correction factor associated with the measured electrical property; and applying the correction factor to a signal generated by the sensor to produce a corrected signal.
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Citations
26 Claims
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1. A method of correcting a signal in a sensing device, comprising the steps of:
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providing a sensing device comprising a sensor, a first electrical pad, a second electrical pad, and a continuous polymer layer contacting at least a portion of the first and second electrical pads; applying a potential across the first and second electrical pads; measuring an electrical property associated with the continuous polymer layer; determining a correction factor associated with the measured electrical property; and applying the correction factor to a signal generated by the sensor to produce a corrected signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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22. A method of determining a correction factor comprising the steps of:
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providing a plurality of devices, each of said devices comprising a sensor;
a first electrical pad;
a second electrical pad; and
a continuous polymer layer contacting at least a portion of the first and second electrical pads, wherein said devices have been exposed to different environmental conditions;measuring an electrical property of the continuous polymer layer for each of the devices; measuring a sensor signal for a control fluid for each of the devices; and correlating the measured electrical properties with the measured sensor signals for the plurality of devices to determine the correction factor. - View Dependent Claims (23, 24, 25)
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26. A device having a sensor and a continuous polymer layer formed on a substantially planar surface wherein the surface comprises two adjacent electrical contact pads and a space therebetween, wherein said polymer layer covers at least a portion of the two electrical contact pads and a portion of the space therebetween, wherein when a preselected potential or potential cycle is applied to the pads and the impedance or current associated with said polymer layer is measured, said measured value is converted to a correction parameter and is applied to the output of said sensor.
Specification