FIG. 1 is a perspective view of a needle head for a biopsy cannula showing my new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a side elevational view thereof, the opposite side elevational view being identical thereto;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is an end elevational view thereof; and,

FIG. 6 is an end elevational view thereof, opposite that shown in FIG. 5.

The broken line showing of the cannula in FIGS. 1-4 is for illustrative purposes only and forms no part of the claimed design.