Blood Collecting Device

FIG. 1 is a perspective view of a blood collecting device in accordance with the ornamental design;

FIG. 2 is a front view of the blood collecting device;

FIG. 3 is a back view of the blood collecting device;

FIG. 4 is a bottom view of the blood collecting device;

FIG. 5 is a top elevational view of the blood collecting device;

FIG. 6 is a right side view of the blood collecting device; and,

FIG. 7 is a left side view of the blood collecting device.

The features shown in broken lines depict portions of the blood collecting device and form no part of the claimed design.