US D580552 S1
The ornamental design for a spinal implant, as shown and described.
FIG. 1 is a perspective view of a spinal implant showing my new design;
FIG. 2 is a top plan view thereof, the side opposite being a mirror image;
FIG. 3 is a front elevation thereof;
FIG. 4 is a rear elevation thereof; and,
FIG. 5 is a right side elevation thereof, the side opposite being a mirror image.
The broken lines shown in the drawing are included for the purpose of illustrating unclaimed subject matter and form no part of the claimed design.