Abstract: The present technology relates generally to surgical devices for male circumcision and associated systems and methods. In some embodiments, a circumcision device configured in accordance with the technology comprises an outer member configured to be positioned along an exterior portion of a prepuce adjacent a glans of a penis of a human patient. The outer member may include an open-ended band moveable between an unlocked position and a plurality of locked positions. The band includes circumferentially overlapping first and second ends in each of the locked positions, and defines a closed space having a different fixed diameter in each of the locked positions. The device can also include a cylindrical inner member configured to be positioned within the band of the outer member and adjacent an inner portion of the prepuce.

Abstract: A power toothbrush (10) is disclosed having a handle (15) containing a rechargeable battery (12), an ultrasonic drive circuit (14), a sonic component (16) such as a motor, and a control unit (18). The handle is connected to a toothbrush head (20) preferably having a plurality of bristles (26) and an ultrasonic transducer (22) that is operatively connected to a waveguide (24) that extends from the toothbrush head generally adjacent the bristles. The waveguide facilitates the transmission of acoustic energy into the dental fluid. It is contemplated that the waveguide may be utilized in manual or power toothbrushes, and in a combination without the sonic component, or in a combination without the ultrasonic transducer. Toothbrushes disclosed herein achieve improved plaque and stain removal from the teeth as well as interproximal and subgingival regions, while enhancing the user experience, massaging the gums, and stimulating dental tissue.