The ornamental design for a medicalappliance for percussive respiratory therapy, as shown and described.
FIG. 1 is a perspective view of the medical appliance for percussive
therapy in accordance with my new design;
FIG. 2 is a side view thereof;
FIG. 3 is a top view thereof;
FIG. 4 is a bottom view thereof, it being understood that the appliance is
open at the bottom and that the interior contours follow the exterior
contours.