A flat and cost effective actuator based on superabsorbent polymer driving a skin attachable drug delivery system

27.07.2012

Smart Mater. Struct. 2012; 21; 105002 (11pp)

We present a flat and cost effective volume displacement actuator based on superabsorbent polymer. It is predestined for low-cost skin attachable drug delivery devices. The actuator consists of a plastic ring filled with superabsorbent polymer granulate. It is sealed with a thermoplastic elastomeric membrane on one side and a stiff filter membrane on the other side. After adding a defined amount (e.g. 2 or 10 ml) of swelling agent the actuator shows a fast initial volume displacement within a few minutes followed by a slow continuous increase of this volume within hours.

BIOSS

A flat and cost effective actuator based on superabsorbent polymer driving a skin attachable drug delivery system