Abstract
Electrochemistry is known to be a key transducing technology between chemical energy and electrical energy. Electroosmosis is a phenomenon which the fluid moves upon applying electric field through capillary or porous ceramic membrane. This is a rare example where electrochemistry is utilized for a mechanical transducer. Electroosmotic pumps are the simplest one, consisting of two electrodes separated by a porous membrane. We developed a non-gassing electroosmotic pump, which do not use the traditional platinum electrode and made the pump system stable and efficient. Additionally, we have introduced plate-type electrooscmotic pump (P-EOP®), which enables battery-operable pumps with low power consumption and precise control over microliter-scale fluids. Utilizing this technology, we have constructed an insulin patch pump measuring just 11 mm in thickness and weighing 20 g, yet containing a substantial 300-unit (3 mL) insulin reservoir. Compared to conventional patch pumps with 200-unit (2 mL) insulin reservoirs, our design offers a significant reduction in both thickness and weight. This innovation holds significant promise for enhancing the quality of life for individuals with diabetes who require regular insulin administration.
Published Version
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