The ornamental design for a trocar, as shown and described.
FIG. 1 is a front perspective view of a trocar according to the present invention.
FIG. 2 is a front view of the trocar of FIG. 1.
FIG. 3 is a rear view of the trocar of FIG. 1.
FIG. 4 is a left side view of the trocar of FIG. 1.
FIG. 5 is a right side view of the trocar of FIG. 1.
FIG. 6 is a top view of the trocar of FIG. 1; and,
FIG. 7 is a bottom view of the trocar of FIG. 1.
The broken lines shown in FIGS. 1 and 4-7 in the middle of the trocar illustrate a symbolic break in its length. The appearance of any portion of the article between the break lines forms no part of the claimed design. The broken lines shown in FIG. 2 illustrates portions of the trocar that form no part of the claimed design. The dash dot lines shown in FIGS. 1 and 2 around the edge of the bulb illustrate the boundary of the claimed design and forms no part thereof.