Systems, methods, and sensors for measuring tissue
First Claim
1. A method for measuring a localized biological transfer impedance (LBTI) of a tissue using a device including a sensor with a plurality of electrodes, the plurality of electrodes including at least a pair of current electrodes and a pair of voltage electrodes, wherein the sensor includes a flex circuit having at least a first side portion, a second side portion, a third side portion, and a fourth side portion, wherein the first side portion and the third side portion are fixed to restrict motion, and the second side portion and the fourth side portion are allowed to move freely, the method comprising:
- positioning the plurality of electrodes of the device in contact with a portion of the tissue;
passing a current through the tissue using the pair of current electrodes;
measuring a signal corresponding to a voltage resulting from the current across the pair of voltage electrodes;
verifying electrical contact between (i) the tissue and the pair of current electrodes, and (ii) the tissue and the pair of voltage electrodes;
indicating to a user of the device, a status of electrical contact between the tissue and at least one electrode of the plurality of electrodes; and
analyzing the current passed through the tissue and the measured signal to determine the localized biological transfer impedance (LBTI) of the tissue.
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0 Petitions
Accused Products
Abstract
Embodiments of devices and methods for evaluating tissue are disclosed. In one embodiment, a method for measuring a characteristic of a tissue may include passing a current through the tissue, measuring a signal corresponding to the voltage resulting from passing the current through the tissue, analyzing current passed through the tissue and resulting voltage to determine the electrical characteristics of the tissue; and analyzing the electrical characteristics of the tissue to determine a status of the tissue. Disposable sensors are disclosed.
52 Citations
29 Claims
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1. A method for measuring a localized biological transfer impedance (LBTI) of a tissue using a device including a sensor with a plurality of electrodes, the plurality of electrodes including at least a pair of current electrodes and a pair of voltage electrodes, wherein the sensor includes a flex circuit having at least a first side portion, a second side portion, a third side portion, and a fourth side portion, wherein the first side portion and the third side portion are fixed to restrict motion, and the second side portion and the fourth side portion are allowed to move freely, the method comprising:
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positioning the plurality of electrodes of the device in contact with a portion of the tissue; passing a current through the tissue using the pair of current electrodes; measuring a signal corresponding to a voltage resulting from the current across the pair of voltage electrodes; verifying electrical contact between (i) the tissue and the pair of current electrodes, and (ii) the tissue and the pair of voltage electrodes; indicating to a user of the device, a status of electrical contact between the tissue and at least one electrode of the plurality of electrodes; and analyzing the current passed through the tissue and the measured signal to determine the localized biological transfer impedance (LBTI) of the tissue. - View Dependent Claims (3, 4, 5, 9, 10, 12, 13, 14, 16, 17, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29)
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2. A device for measuring a localized biological transfer impedance (LBTI) of a tissue, comprising:
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a plurality of electrodes provided in a sensor, wherein the sensor includes a flex circuit having at least a first side portion, a second side portion, a third side portion, and a fourth side portion, the first side portion located opposite the third side portion, wherein the first side portion and the third side portion are fixed to restrict motion, and the second side portion and the fourth side portion are allowed to move freely; a power supply operably coupled to the plurality of electrodes to supply a signal through the tissue; analytical electronics operably coupled to the plurality of electrodes for analyzing an input current and resulting voltage to determine the localized biological transfer impedance (LBTI) of the tissue; and electronics configured to indicate to a user (i) a result of analysis performed by the analytical electronics, and (ii) a status of electrical contact between at least one electrode of the plurality of electrodes and the tissue. - View Dependent Claims (6, 7, 8, 15, 18, 19)
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11. A method for measuring a localized biological transfer impedance (LBTI) of a tissue using a device including a sensor with a plurality of electrodes, the plurality of electrodes including at least a pair of current electrodes and a pair of voltage electrodes, the method comprising:
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positioning the plurality of electrodes of the device in contact with a portion of the tissue; passing a current through the tissue using the pair of current electrodes; measuring a signal corresponding to a voltage resulting from the current across the pair of voltage electrodes, wherein a direction of measuring the signal is not collinear with a direction along which the current is passed; verifying electrical contact between (i) the tissue and the pair of current electrodes and (ii) the tissue and the pair of voltage electrodes; indicating to a user of the device, a status of electrical contact between the tissue and at least one electrode of the plurality of electrodes; and analyzing the current passed through the tissue and the measured signal to determine the localized biological transfer impedance (LBTI) of the tissue.
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Specification