Current control for electrotransport drug delivery

US8428709B1 · kind B1 · utility

Assignees

• Incline Therapeutics, Inc. · US
• ALZA CORPORATION · US

Inventors

• Bradley E. White · Cincinnati, US
• Paul Hayter · Mountain View, US
• John Lemke · Pleasanton, US
• Scot Satre · Concord, US
• Corinna X. Chen · Oakland, US
• Brian W. Read · Brier, US
• Jason E. Dougherty · Seattle, US

Key dates

• Filing date: Jun 11, 2012
• Grant date: Apr 23, 2013
• Expiry date: Jun 11, 2032

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61N1/30
• WIPO field: Medical technology
• WIPO sector: Instruments

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).