Handpiece for Ultrasound Therapy Device

FIG. 1 is a top, front, right side perspective view of a handpiece for ultrasound therapy device, showing my new design; FIG. 2 is a front elevation view thereof; FIG. 3 is a rear elevation view thereof; FIG. 4 is a left side elevation view thereof; FIG. 5 is a right side elevation view thereof; FIG. 6 is a top plan view thereof; FIG. 7 is a bottom plan view thereof; and, FIG. 8 is a top, rear, left side perspective view thereof. The broken lines in the drawings show portions of the handpiece for ultrasound therapy device that form no part of the claimed design.