Apparatus and methods for determining damaged tissue using sub-epidermal moisture measurements
First Claim
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1. An apparatus for identifying damaged tissue in a patient, said apparatus comprisingone or more coaxial electrodes capable of interrogating tissue at and around an anatomical site of a patient,wherein each of said one or more coaxial electrodes is configured to generate bioimpedance signals;
- a circuit electronically coupled to said one or more coaxial electrodes and configured to convert said bioimpedance signals into sub-epidermal moisture (SEM) values;
a processor electronically coupled to said circuit and configured to receive said SEM values; and
a non-transitory computer readable medium electronically coupled to said processor and comprising instructions stored thereon that when executed on said processor, perform the steps ofreceiving from said processor one of said SEM values measured at said anatomical site of a patient and at least two of said SEM values measured around said anatomical site and their relative measurement locations;
determining a maximum SEM value from said SEM values measured at and around said anatomical site of a patient;
determining a difference between said maximum SEM value and each of said SEM values measured at and around said anatomical site of a patient; and
flagging said anatomical site associated with a difference greater than a predetermined threshold as damaged tissue.
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Abstract
The present disclosure provides apparatuses and computer readable media for measuring sub-epidermal moisture in patients to determine damaged tissue for clinical intervention. The present disclosure also provides methods for determining damaged tissue.
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Citations
22 Claims
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1. An apparatus for identifying damaged tissue in a patient, said apparatus comprising
one or more coaxial electrodes capable of interrogating tissue at and around an anatomical site of a patient, wherein each of said one or more coaxial electrodes is configured to generate bioimpedance signals; -
a circuit electronically coupled to said one or more coaxial electrodes and configured to convert said bioimpedance signals into sub-epidermal moisture (SEM) values; a processor electronically coupled to said circuit and configured to receive said SEM values; and a non-transitory computer readable medium electronically coupled to said processor and comprising instructions stored thereon that when executed on said processor, perform the steps of receiving from said processor one of said SEM values measured at said anatomical site of a patient and at least two of said SEM values measured around said anatomical site and their relative measurement locations; determining a maximum SEM value from said SEM values measured at and around said anatomical site of a patient; determining a difference between said maximum SEM value and each of said SEM values measured at and around said anatomical site of a patient; and flagging said anatomical site associated with a difference greater than a predetermined threshold as damaged tissue. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A non-transitory computer readable medium for identifying damaged tissue in a patient, comprising instructions stored thereon that when executed on a processor, perform the steps of
receiving from said processor at least one sub-epidermal moisture (SEM) values derived from at least one bioimpedance measurements measured at an anatomical site of a patient and at least two of SEM values derived from at least two bioimpedance measurements measured around said anatomical site and their relative measurement locations; -
determining a maximum SEM value from said SEM values measured at and around said anatomical site of a patient; determining a difference between said maximum SEM value and each of said SEM values measured at and around said anatomical site of a patient; and flagging said anatomical site associated with a difference greater than a predetermined threshold as damaged tissue. - View Dependent Claims (18)
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19. A method for identifying damaged tissue, said method comprising
measuring at least three sub-epidermal moisture values at and around an anatomical site of a patient using an apparatus comprising: -
one or more coaxial electrodes capable of interrogating tissue at and around an anatomical site, wherein each of said one or more coaxial electrodes is configured to generate bioimpedance signals; a circuit electronically coupled to said one or more coaxial electrodes and configured to convert said bioimpedance signals into sub-epidermal moisture (SEM) values; a processor electronically coupled to said circuit and configured to receive said SEM values; and a non-transitory computer readable medium electronically coupled to said processor and comprising instructions stored thereon that when executed on said processor, perform the steps of receiving from said processor one of said SEM values measured at said anatomical site of a patient and at least two of said SEM values measured around said anatomical site and their relative measurement locations; determining a maximum SEM value from said SEM values measured at and around said anatomical site of a patient; determining a difference between said maximum SEM value and each of said SEM values measured at and around said anatomical site of a patient; and flagging said anatomical site associated with a difference greater than a predetermined threshold as damaged tissue; and obtaining said measurement locations flagged as damaged tissue from said apparatus. - View Dependent Claims (20, 21, 22)
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Specification