The ornamental design for a device to prevent analleakage, as shown and described.
FIG. 1 is a front view of the device to prevent anal leakage showing my new design;
FIG. 2 is a front and right side perspective view thereof;
FIG. 3 is a front and left side perspective view thereof;
FIG. 4 is a side view thereof;
FIG. 5 is a rear view thereof;
FIG. 6 is a bottom, rear and left side perspective view thereof;
FIG. 7 is a bottom, rear and right side perspective view thereof;
FIG. 8 is an exploded, unassembled front perspective view thereof; shown in an unassembled condition where the wadding material is not shown for ease of illustration; and,
FIG. 9 is a rear partial assembled perspective view thereof.