The ornamental design for a medical instrumentmodule, as shown and described.
FIG. 1 is a perspective view of a medical instrument module from the side, showing our design;
FIG. 2 is a front view of the apparatus thereof;
FIG. 3 is a back view of the apparatus thereof;
FIG. 4 is a right side view of the apparatus thereof;
FIG. 5 is a left side view of the apparatus thereof;
FIG. 6 is a top plan view of the apparatus thereof; and,
FIG. 7 is a bottom plan view of the apparatus thereof.
The broken lines in all drawings are included for the purpose of illustrating portions of the medical instrument module that form no part of the claimed design.