CURRENT LEAKAGE DETECTION FOR A MEDICAL IMPLANT
First Claim
Patent Images
1. An implantable medical device comprising:
- at least one electronic circuit;
a current imbalance detector comprising;
a core surrounding at least a portion of one or more electrical conductors connected to the at least one electronic circuit;
a winding on the core; and
a detection circuit connected to the winding and configured to provide a signal indicative of whether there is an imbalance in current conducted by the one more electrical conductors; and
a hermetically sealed housing that houses said at least one electronic circuit and said current imbalance detector.
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Abstract
Current leakage detection techniques in an implantable medical device are disclosed. In these techniques, a core surrounds conductors carrying current to and from an implanted medical device. A secondary winding on the core picks up imbalances between the current flows on the conductors traveling through the core. An imbalance is detected if the current on the secondary winding results in a specified threshold being exceeded. Corrective action may then be taken if a current imbalance is detected.
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Citations
26 Claims
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1. An implantable medical device comprising:
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at least one electronic circuit; a current imbalance detector comprising; a core surrounding at least a portion of one or more electrical conductors connected to the at least one electronic circuit; a winding on the core; and a detection circuit connected to the winding and configured to provide a signal indicative of whether there is an imbalance in current conducted by the one more electrical conductors; and a hermetically sealed housing that houses said at least one electronic circuit and said current imbalance detector. - View Dependent Claims (2, 3, 4, 5, 6, 7, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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8. The implantable medical device of 1, further comprising a comparator configured to provide an output indicative of whether the output of the current imbalance detector exceeds a threshold.
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19. A method for use in an implantable medical device having at least one electronic circuit, the method comprising:
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obtaining a signal representative of a sensed signal from a winding on a core, wherein the core surrounds at least a portion of one or more electronic conductors connected to the at least one electronic circuit of the implantable medical device; determining if the sensed signal indicates an imbalance in current conducted by the one or more electrical conductors; and performing a corrective action if a current imbalance is detected exceeding a threshold. - View Dependent Claims (20, 21, 22, 23, 24, 25)
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26. A system for use in an implantable medical device having at least one electronic circuit, the system comprising:
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means for obtaining a signal representative of a sensed signal from a winding on a core, wherein the core surrounds at least a portion of one or more electronic conductors connected to the at least one electronic circuit of the implantable medical device; means for determining if the sensed signal indicates an imbalance in current conducted by the one or more electrical conductors; and means for performing a corrective action if a current imbalance is detected exceeding a threshold.
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Specification