FIG. 1 is a perspective view of a multi-column therapeutic treatment device showing an embodiment of the design;
FIG. 2 is a front face view thereof;
FIG. 3 is a rear face view thereof;
FIG. 4 is a top view thereof;
FIG. 5 is a bottom view thereof;
FIG. 6 is a side elevational view thereof; and,
FIG. 7 is a side elevational view opposite that shown in FIG. 6.
The broken line disclosure is for illustrative purposes only and forms no part of the claimed design.