An electrostatic discharge protection device has a substrate, a P-well, a N-well, and an isolation portion. Such methods may include monitoring physiological parameters of a patient, detecting cardiac conditions, and delivering vagal stimulation to the patient to treat the detected cardiac conditions. The spray cap actuator has an operable position in which a central passage, formed through the base, engages with an integral down tube depending from the finger trigger, and a non-operable position in which the finger trigger is pivoted away from the lower base. The hook-shaped member is hooked into the engagement member and is supported thereby through co-operation between the first and the second engagement surfaces as well as the first and second bearing surfaces. Withstanding voltage characteristics are improved and an occupation area thereof is reduced while maintaining switching characteristics and a low on-resistance of an insulated gate bipolar transistor.