The ornamental design for a nasaldilatordevice, as shown and described.
FIG. 1 is a front elevation view of a nasal dilator device in accordance with the invention;
FIG. 2 is a top plan view of the nasal dilator device;
FIG. 3 is a bottom plan view of the nasal dilator device;
FIG. 4 is a right side elevation view of the nasal dilator device;
FIG. 5 is an isometric front view of the nasal dilator device;
FIG. 6 is a left side elevation view of the nasal dilator device;
FIG. 7 is a rear elevation view of the nasal dilator device; and,
FIG. 8 is an isometric rear view of the nasal dilator device.
The broken lines showing in the figures are included for the purpose of illustrating portions of the nasal dilator device and form no part of the claimed design.