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Iontophoresis is a process used to deliver a specially formulated, transdermal medication for the body through skin. This transdermal medication is a charged compound driven through the skin by the flow of electrical current. For some diseases and conditions this method of drug delivery has significant advantages for many patients over oral, hypodermic or topical medication.

Some of the biggest challenges that designers face when creating devices such as iontophoresis patches are that the critical electronics are in the wearable portion of the device, which is meant to be used once then thrown away. This scenario creates intense pressure for the patch electronics to be small and for lower overall BOM costs. Also, since this is a small, disposable item, battery cost and energy capacity impose further constraints on the design. Finally, the design needs to be easily modified for additional features, such as changes in the medication dose and duration. Medical device designers can use Microchip components to create safe, cost-effective iontophoresis device designs.

System Diagram

iontophoresis diagram

Advantages of Microchip's Components in Iontophoresis Devices

  • Small-footprint PIC® microcontrollers in packages such as SOT23 and 2x3 DFN
  • Lowest-power sleep currents down to 9 nA, IDD currents down to 34 μA/MHz
  • Core Independent Peripherals such as configurable logic cells and PWM

Microchip Has What Iontophoresis Device Designers Need

  • Small-footprint microcontrollers for wearable patch-based iontophoresis devices
  • Lowest-power parts for a smaller, lighter-weight battery to reduce overall size and weight
  • PIC microcontrollers with Core Independent Peripherals enable innovative wearable medical devices

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