9B is a front view, in part cross-section, of the therapeutic dispenser shown in FIG. 1, in a fixedly locked position; [0033]FIG. 10 is an enlarged front view of the carriage of the therapeutic dispenser shown in FIG. 1; [0034]FIG. 11 is a top view of the carriage shown in FIG. 10; [0035]FIG. 12 is a cross-sectional view of the carriage taken along lines 12-12 of FIG. 11; [0036]FIG. 13 is a front