Mask assembly for positioning and fixing the face of a patient during radiation therapy

FIG. 1 is a front elevation view of a mask assembly for positioning and fixing the face of a patient during radiation therapy;

FIG. 2 is a rear elevation view thereof;

FIG. 3 is a left side elevation view thereof;

FIG. 4 is a right side elevation view thereof;

FIG. 5 is a bottom plan view thereof;

FIG. 6 is a top plan view thereof;

FIG. 7 is a first perspective view thereof;

FIG. 8 is a second perspective view thereof;

FIG. 9 is a front elevation view of an alternative embodiment of a mask assembly for positioning and fixing the face of a patient during radiation therapy;

FIG. 10 is a rear elevation view thereof;

FIG. 11 is a left side elevation view thereof;

FIG. 12 is a right side elevation view thereof;

FIG. 13 is a bottom plan view thereof;

FIG. 14 is a top plan view thereof;

FIG. 15 is a first perspective view thereof; and,

FIG. 16 is a second perspective view thereof.

The broken lines in the drawings depict portions of the mask assembly for positioning and fixing the face of a patient during radiation therapy that form no part of the claimed design.