The ornamental design for an externalincontinencydevice, as shown and described.
FIG. 1 is a front perspective view of an external incontinency device showing our new design in a closed configuration;
FIG. 2 is a front view thereof;
FIG. 3 is a rear view thereof;
FIG. 4 is a left side view thereof;
FIG. 5 is a right side view thereof;
FIG. 6 is a top view thereof;
FIG. 7 is a bottom view thereof; and,
FIG. 8 is another front perspective view of the external incontinency device showing our new design in a partially opened configuration.
The broken lines shown in the drawings are included for the purpose of illustrating portions of the external incontinency device and form no part of the claimed design.