FIG. 1 is a perspective view of a combined obturator, cannula and valve assembly showing our new design new design;

FIG. 2 is a right side elevational view thereof;

FIG. 3 is a left side elevational view thereof;

FIG. 4 is a front elevational view thereof;

FIG. 5 is a rear elevational view thereof;

FIG. 6 is a top plan thereof;

FIG. 7 is a top plan thereof;

FIG. 8 is a perspective view of the Cannula and Valve Assembly showing our new design new design, with the Obturator removed;

FIG. 9 is a right side elevational view thereof;

FIG. 10 is a left side elevational view thereof;

FIG. 11 is a front elevational view thereof;

FIG. 12 is a rear elevational view thereof;

FIG. 13 is a top plan thereof;

FIG. 14 is a top plan thereof;

FIG. 15 is a perspective view of the Cannula showing our new design new design, with the Obturator and Valve removed;

FIG. 16 is a right side elevational view thereof;

FIG. 17 is a left side elevational view thereof;

FIG. 18 is a front elevational view thereof;

FIG. 19 is a rear elevational view thereof;

FIG. 20 is a top plan thereof;

FIG. 21 is a bottom plan thereof;

FIG. 22 is a perspective view of the Obturator showing our new design new design;

FIG. 23 is a right side elevational view thereof;

FIG. 24 is a front elevational view thereof;

FIG. 25 is an enlarged fragmentary elevational view of the tip portion, shown in an extended position;

FIG. 26 is a left side elevational view of FIG. 23;

FIG. 27 is a rear elevational view thereof;

FIG. 28 is a top plan thereof;

FIG. 29 is a bottom plan thereof;

FIG. 30 is a perspective view of the valve showing our new design new design;

FIG. 31 is a top plan thereof;

FIG. 32 is a bottom plan thereof;

FIG. 33 is a front elevational view thereof, the rear elevational view being a mirror image thereto; and,

FIG. 34 is a right side elevational view thereof, the left side elevational view being a mirror image thereto.