The ornamental design for an esophagussizinginstrument, as shown and described.
FIG. 1 is a top perspective view of an esophagus sizing instrument, showing our new design;
FIG. 2 is a top plan view thereof;
FIG. 3 is a left side elevational view thereof (the right side elevational view being a mirror image of the left side elevational view shown in FIG. 3);
FIG. 4 is a bottom plan view thereof;
FIG. 5 is a front elevational view thereof; and,
FIG. 6 is a back elevational view thereof.
The shaft shown in broken lines is unclaimed environment and forms no part of the claimed design.