Abstract: Apparatus for stimulating a cervical vagus nerve including a neck band attachable to a human neck, a therapy module attached to said neck band wherein said neck band positions said therapy module over a cervical vagus nerve, an ultrasound transducer within said therapy module, and a driver circuit configured to excite said ultrasound transducer to apply ultrasonic energy to said cervical vagus nerve. A force-limiting mechanism including a spring-loaded subframe prevents damage to blood vessels adjacent to said cervical vagus nerve. The apparatus operates at low voltages of 5 volts or less suitable for portable battery-powered operation and provides pulsed ultrasonic energy for therapeutic stimulation.

Abstract: A headset apparatus for a user comprising an ultrasound transducer mounted to the headset apparatus, wherein the ultrasound transducer is configured to press against the auricular vagus nerve, a coupling fluid on the surface of the transducer permitting ultrasonic energy to pass into human skin and, a cannabinoid extract in solution with the coupling fluid.

Abstract: A headset apparatus for a user comprising a headband configured to secure the headset to a user's head, an ultrasound transducer on said apparatus configured to press against the auricular vagus nerve, and a replaceable conformal pad over the ultrasound transducer having features conforming to the surface of the ear over the auricular vagus nerve.

Abstract: A headset apparatus for a user comprising an ultrasound transducer mounted to the headset apparatus, wherein the ultrasound transducer is configured to press against the auricular vagus nerve, a coupling fluid on the surface of the transducer permitting ultrasonic energy to pass into human skin and, a cannabinoid extract in solution with the coupling fluid.

Abstract: A headset apparatus for a subject has an ultrasound transducer mounted within an earpiece of the headset, wherein the ultrasound transducer is configured to nest against an ear of the subject. A headband is coupled to the earpiece and is configured to extend across a parietal region of the head and to provide flexure that exerts a force for urging the ultrasound transducer against a pinna surface of the subject's ear. An alignment projection extending from the earpiece is configured as an alignment feature for positioning the ultrasound transducer against the pinna surface when the alignment projection is seated within the opening of an ear canal of the subject. The transducer and alignment projection are in fixed positions relative to each other within the earpiece.