I claim the ornamental design for a medicine injector, as shown and described.
FIG. 1 is a front perspective view of a medicine injector of the present invention;
FIG. 2 is a rear perspective view thereof;
FIG. 3 is a front view thereof;
FIG. 4 is a rear view thereof;
FIG. 5 is a left side view thereof;
FIG. 6 is a right side view thereof;
FIG. 7 is a top view thereof; and,
FIG. 8 is a bottom view thereof.
The even broken lines show parts of the medicine injector that represent unclaimed subject matter and form no part of the claimed design. Additionally, the unevenly broken lines shown in FIGS. 1, 3, 5, 6 and 7 define the limits of the claimed design.