Base for medical instrument stand

FIG. 1 is a perspective view of a base for medical instrument stand, showing my new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a side elevational view thereof, the left and right sides being mirror images of each other;

FIG. 5 is a rear elevational view thereof; and

FIG. 6 is a bottom plan view thereof.

The broken line showing of the hanger pole in FIG. 1 and of the casters in FIGS. 1 and 3-6 is for illustrative purposes only and forms no part of the claimed design.