US D589144 S1
The ornamental design for a medical device, as shown and described.
FIG. 1 is an isometric view of a medical device showing our new design;
FIG. 2 is a top view thereof;
FIG. 3 is a bottom view thereof;
FIG. 4 is a left side view thereof;
FIG. 5 is a right side view thereof;
FIG. 6 is a front end view thereof;
FIG. 7 is a rear end view thereof; and,
FIG. 8 is an isometric view of the medical device of FIG. 1 showing a tube portion in an alternate position.
Elements illustrated in the drawing figures using broken lines illustrate intended environmental components and do not constitute part of the claimed design.