FIG. 1 is a perspective view of a vessel sealer showing our new design;

FIG. 2 is a right side view of the vessel sealer;

FIG. 3 is a front view of the vessel sealer;

FIG. 4 is a rear view of the vessel sealer;

FIG. 5 is a left side view of the vessel sealer;

FIG. 6 is a top view of the vessel sealer; and,

FIG. 7 is a bottom view of the vessel sealer.

The broken line showing in FIGS. 1 through 7 are for illustrative purposes only and forms no part of the claimed design.