Charger alignment indicator with adjustable threshold
First Claim
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1. An external charger for an implantable medical device, comprising:
- a source of electrical power;
an alternating current (AC) coil configured for transcutaneously conveying electrical energy from the electrical power source to charge the implanted medical device;
a charge strength indicator configured for generating a user-discernible signal at a threshold;
a detector configured for detecting an electrical parameter during a series of discrete time periods; and
a processor configured for adjusting the threshold based on the detected electrical parameter during the series of discrete time periods.
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Abstract
Electrical energy is transmitted to charge the implanted medical device, and an electrical parameter (e.g., a steady-state voltage) indicating a rate at which the implanted medical device is charged by the electrical energy is detected. A threshold (e.g., by modifying a stored threshold value) at which the charge strength indicator generates a user-discernible signal is adjusted based on the detected electrical parameter.
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Citations
42 Claims
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1. An external charger for an implantable medical device, comprising:
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a source of electrical power; an alternating current (AC) coil configured for transcutaneously conveying electrical energy from the electrical power source to charge the implanted medical device; a charge strength indicator configured for generating a user-discernible signal at a threshold; a detector configured for detecting an electrical parameter during a series of discrete time periods; and a processor configured for adjusting the threshold based on the detected electrical parameter during the series of discrete time periods. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42)
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Specification