Oral Suction Cannula for Dental Use

FIG. 1 is a side view of an oral suction cannula for dental use, comprised of a stem piece and an end piece, showing our new design;

FIG. 2 is an opposite side view thereof;

FIG. 3 is a top view thereof;

FIG. 4 is a bottom view thereof;

FIG. 5 is a perspective view thereof;

FIG. 6 is an enlarged side view of an end piece of the cannula of FIG. 1 thereof;

FIG. 7 is an opposite side view of FIG. 6 thereof;

FIG. 8 is a front view of FIG. 6 thereof;

FIG. 9 is a rear view of FIG. 6 thereof;

FIG. 10 is a perspective view of FIG. 6 thereof;

FIG. 11 is a bottom view of FIG. 6 thereof;

FIG. 12 is a top view of FIG. 6 thereof;

FIG. 13 is partial enlarged perspective view of an alternate end piece of the cannula of FIG. 1 ;

FIG. 14 is another perspective view of FIG. 13 thereof;

FIG. 15 is a side view of the stem piece of FIG. 1 ;

FIG. 16 is an opposite side view of FIG. 15 thereof;

FIG. 17 is a top view of FIG. 15 thereof;

FIG. 18 is a bottom view of FIG. 15 thereof;

FIG. 19 is a perspective view of FIG. 15 thereof;

FIG. 20 is an enlarged perspective view of another alternate end piece of the cannula of FIG. 1 thereof; and,

FIG. 21 is another perspective view of FIG. 20 thereof.