FIG. 1 is a front elevational view of the handheld biomedical monitoring device, showing a new ornamental design thereof;

FIG. 2 is a rear elevational view thereof;

FIG. 3 is a first side elevational view thereof;

FIG. 4 is a second side elevational view thereof;

FIG. 5 is a top plan view thereof; and,

FIG. 6 is a bottom plan view thereof.

Any broken line showing of environmental structure in FIGS. 1-6 is for illustrative purposes only and forms no part of the claimed design.