The ornamental design for a colostomydevice, as shown and described.
FIG. 1 is an isometric view of a colostomy device of the present invention;
FIG. 2 is a top view of the colostomy device of FIG. 1;
FIG. 3 is a bottom view of the colostomy device of FIG. 1;
FIG. 4 is a side view of the colostomy device of FIG. 1;
FIG. 5 is the other side view of the colostomy device of FIG. 1;
FIG. 6 is a front view of the colostomy device of FIG. 1; and,
FIG. 7 is a back view of the colostomy device of FIG. 1.
The broken line showing of parts of the drawings is included for the purpose of illustrating use and environment and forms no part of the claimed design.