The ornamental design for a gastricsuctionsystem, as shown and described.
FIG. 1 is a plan view of the gastric suction system of the instant
invention which is curled in order to fit onto a single Figure. The
opposite plan view is the mirror image;
FIG. 2 is an elevational view of the gastric suction system taken from the
left side of FIG. 1;
FIG. 3 is an elevational view of the gastric suction system taken from the
right side of FIG. 1;
FIG. 4 is a plan view of the gastric suction system taken from the top of
FIG. 1; and,
FIG. 5 is a plan view of the gastric suction system taken from the bottom
of FIG. 1.