Proximal flow sensor

FIG. 1 is a top perspective view of a proximal flow sensor;

FIG. 2 is a bottom perspective view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a rear view thereof;

FIG. 5 is a left side view thereof;

FIG. 6 is a right side view thereof;

FIG. 7 is a top view thereof;

FIG. 8 is a bottom view thereof; and,

FIG. 9 is an environmental view thereof.

The broken lines illustrate portions of the proximal flow sensor that form no part of the claimed design.