Method and apparatus for energy harvesting in leadless pacemakers

Abstract

Disclosed is a method and device for energy harvesting designed for implantable medical applications. The device leverages a flexible piezoelectric material, such as polyvinylidene fluoride-trifluoroethylene (P(VDF-TrFE)), and incorporates at least one bistable structural element, such as a molybdenum strip, engineered to undergo snap-through and snap-back transitions during a cardiac cycle. These dynamic transitions produce mechanical deformations of the piezoelectric material, converting biomechanical energy into electrical energy. The apparatus includes electrical contacts, such as gold electrode layers, to capture the electrical energy, which is stored in an energy storage unit for powering implantable devices. To ensure biocompatibility and durability, the device features an encapsulation material, such as polydimethylsiloxane (PDMS). The disclosed method and apparatus provide a self-sustaining energy solution, extending the operational lifespan of implantable medical devices while reducing the need for frequent replacements.

Dependencies are inferred from the claim text.