FIG. 1 is a perspective view of a therapeutic device showing our new design, the broken line showing is for illustrative purposes only and forms no part of the claimed design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a bottom plan view thereof;

FIG. 4 is a side elevational view thereof;

FIG. 5 is a front elevational view thereof; and,

FIG. 6 is a rear elevational view thereof.

The broken lines in the figures are for illustrative purposes only and form no part of the claimed design.