Surgical instrument guide

A method of making an instrument guide comprising:

• providing a first mold segment that defines surfaces on a proximal end of the instrument guide;
• closing two side action mold segments to the first mold segment, the two side action mold segments defining an outside surface of a tube having a constant outside diameter from a distal end of the tube to a proximal end of the tube;
• inserting a second mold segment through openings in the first mold segment, the second mold segment including a plurality of cylindrical segments that form passageway openings inside the tube, the passageway openings extending from the distal end of the tube to the proximal end of the instrument guide, the plurality of cylindrical segments defining a solid core, an inside surface of the tube, and a plurality of radial walls that extend from the solid core to the inside surface of the tube, wherein the tube and the plurality of radial walls have a wall thickness that is substantially the same, and the solid core has a minimum diameter that is substantially larger than the wall thickness;
• injecting a plastic resin into a cavity formed by the first mold segment, the two side action mold segments, and the second mold segment;
• opening the two side action mold segments;
• withdrawing the second mold segment;
• and
• ejecting the instrument guide from the first mold segment.