Plunger rod/needle protector for a hypodermic syringe
FIG. 1 is a side elevation of a plunger rod/needle protector for a hypodermic syringe showing our new design, 
     FIG. 2 is an end view taken from the right of FIG. 1, 
     FIG. 3 is a perspective view thereof; and 
     FIG. 4 is a perspective view in the opposite direction of that of FIG. 3.