FIG. 1 is a top perspective view of a handpiece for high frequency treatment device;
FIG. 2 is a front view thereof;
FIG. 3 is a rear view thereof;
FIG. 4 is a left-side view thereof;
FIG. 5 is a right-side view thereof;
FIG. 6 is a top view thereof;
FIG. 7 is a bottom view thereof;
FIG. 8 is an enlarged view of the encircled portion 8 in FIG. 1;
FIG. 9 is an enlarged view of the encircled portion 9 in FIG. 1;
FIG. 10 is an enlarged view of the encircled portion 10 in FIG. 2; and,
FIG. 11 is an enlarged view of the encircled portion 11 in FIG. 3.
The broken lines in the drawing depict portions of the tip for high frequency treatment device and form no part of the claimed design. The dot-dot-dash broken lines encircling enlargement portions of the claimed design form no part of the claimed design.