The ornamental design for a pen-shaped injector, as shown and described.
The patent or application file contains at least one drawing executed in color. Copies of this patent or patent publication with color drawings(s) will be provided by the Office upon request and payment of the necessary fee.
FIG. 1 is a perspective view of a pen-shaped injection device showing our new design;
FIG. 2 is a front view thereof;
FIG. 3 is a back view thereof;
FIG. 4 is a right side view thereof;
FIG. 5 is a left side view thereof;
FIG. 6 is a bottom view thereof; and,
FIG. 7 is a top view thereof.
The broken line showing of parts of the drawings is included for the purpose of illustrating use and environment and forms no part of the claimed design.