We claim the ornamental design for an ultrasound device, as shown and described.
FIG. 1 is a top left front perspective view of an ultrasound device showing our new design;
FIG. 2 is a front view thereof;
FIG. 3 is a rear view thereof;
FIG. 4 is a right side view thereof;
FIG. 5 is a left side view thereof;
FIG. 6 is a bottom plan view thereof; and,
FIG. 7 is a top plan view thereof.
The broken lines immediately adjacent to the shaded area represent the bounds of the claim, and the remaining broken lines illustrate portions of the ultrasound device that form no part of the claimed design; the broken lines form no part of the claimed design.