FIG. 1 is an overall perspective view of a lancet device showing my design;

FIG. 2 is a top view thereof;

FIG. 3 is a side view thereof;

FIG. 4 is a front view thereof; and,

FIG. 5 is a rear view thereof.

The portions of the article in broken lines are shown for illustrative purposes only and form no part of the claimed design.