US D575401 S1
We claim the ornamental design for a vessel sealer, as shown.
FIG. 1 is a perspective view of a vessel sealer showing our new design;
FIG. 2 is a front view of the vessel sealer;
FIG. 3 is a rear view of the vessel sealer;
FIG. 4 is a top view of the vessel sealer;
FIG. 5 is a bottom view of the vessel sealer;
FIG. 6 is a right side view of the vessel sealer; and,
FIG. 7 is a left side view of the vessel sealer.
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