Current control for electrotransport drug delivery
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United States of America Patent
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Mar 20, 2018
Grant Date -
Jul 16, 2015
app pub date -
Mar 5, 2013
filing date -
Jun 11, 2012
priority date (Note) -
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Abstract
Devices, systems and methods for controlling the application of current and/or voltage to deliver drug from patient contacts of an electrotransport drug delivery device by indirectly controlling and/or monitoring the applied current without directly measuring from the cathode of the patient terminal. In particular, described herein are electrotransport drug delivery systems including constant current delivery systems having a feedback current and/or voltage control module that is isolated from the patient contacts (e.g., anodes and cathodes). The feedback module may be isolated by a transistor from the patient contacts; feedback current and/or voltage control measurements may be performed at the transistor rather than at the patient contact (e.g., cathode).
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