Portable Injection Device

1 . 1 is a top perspective view of our design;

1 . 2 is a back view thereof;

1 . 3 is a front view thereof;

1 . 4 is a right view thereof;

1 . 5 is a bottom perspective view thereof;

1 . 6 . is a top view thereof;

1 . 7 . is a bottom view thereof;

1 . 8 . is a left view thereof.

The dashed broken lines represent portions of the article that form no part of the claimed design. Dotted broken lines represent a change in the slope of a surface and form no part of the claimed design.