Integrity evaluation system in an implantable hearing prosthesis
First Claim
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1. A method performed at a hearing prosthesis, comprising:
- performing a plurality of bipolar measurements on a plurality of electrodes configurable as bipolar electrode pairs, wherein at least one or more of the electrodes are implanted in a recipient'"'"'s cochlea;
determining, based on the bipolar measurements, a bipolar impedance value for each of a plurality of the bipolar electrode pairs;
performing one or more common ground measurements at each of the plurality of bipolar electrode pairs;
resolving, using the one or more common ground measurements and a model of the implanted cochlea behavior, each of the bipolar impedance values into a perilymph impedance component and an electrode-tissue impedance component;
analyzing the perilymph impedance components and the electrode-tissue impedance components; and
initiating, at the hearing prosthesis, one or more diagnostic operations based on the analysis of the perilymph impedance components and the electrode-tissue impedance components.
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Abstract
An implantable hearing prosthesis, comprising an integrated integrity system. The integrity system is configured to measure one or more electrical characteristics of at least one component of the prosthesis, to evaluate the integrity of the prosthesis based on the measurements, and to perform at least one diagnostic operation based on the evaluation.
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Citations
23 Claims
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1. A method performed at a hearing prosthesis, comprising:
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performing a plurality of bipolar measurements on a plurality of electrodes configurable as bipolar electrode pairs, wherein at least one or more of the electrodes are implanted in a recipient'"'"'s cochlea; determining, based on the bipolar measurements, a bipolar impedance value for each of a plurality of the bipolar electrode pairs; performing one or more common ground measurements at each of the plurality of bipolar electrode pairs; resolving, using the one or more common ground measurements and a model of the implanted cochlea behavior, each of the bipolar impedance values into a perilymph impedance component and an electrode-tissue impedance component; analyzing the perilymph impedance components and the electrode-tissue impedance components; and initiating, at the hearing prosthesis, one or more diagnostic operations based on the analysis of the perilymph impedance components and the electrode-tissue impedance components. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A method performed at a hearing prosthesis, comprising:
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performing a plurality of bipolar measurements on a plurality of electrodes configurable as bipolar electrode pairs, wherein one or more of the electrodes are implanted in a recipient'"'"'s cochlea; determining, based on the bipolar measurements, a bipolar impedance value for each of a plurality of the bipolar electrode pairs, performing one or more common ground measurements at each of the plurality of bipolar electrode pairs; detecting, based on the bipolar impedance values, the one or more common ground measurements, and a model of the implanted cochlea behavior, a change in at least one of the behavior of the current flow through perilymph of the cochlea or a change in an electrode impedance of the cochlea; initiating, at the hearing prosthesis, at least one diagnostic operation based on the detected change in at least one of the behavior of the current flow through perilymph of the cochlea or a change in an electrode impedance of the cochlea analysis of the perilymph. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23)
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Specification