Electro-stimulation patch

Abstract

A disposable, self-contained electro-stimulation device configured with paired cutaneous electrodes for placement over specific acupuncture and neurostimulation points (such P6) on a patient's wrist, delivering controlled electrical pulses to reduce or prevent nausea and vomiting following surgery or anesthesia. Its advanced circuitry trades boost-converter efficiency for total system energy conservation, optimized for the low-duty-cycle pulse output used in neuromodulation rather than continuous high-power operation. Its single-IC, digitally controlled pulse engine performs both biphasic stimulation and contact verification, optimizing it for compact, battery-powered wearable medical devices. It also uses a miniature Hall-effect magnetic-field sensor positioned over a planar helical trace that carries the stimulation current, producing a proportional magnetic field detectable by the Hall sensor for the non-invasive current detection and skin-contact verification.