Patent ID: 7985211
Filing Date: 2011-07-26
Classification: A61J,A61M

Abstract:
1. A piercing structure comprising: a head segment comprising a tip disposed at a first end of the structure and a widest portion at an end of the head segment opposing the tip, the head segment tapering from the widest region to the tip, the head segment having a front surface and an opposing back surface, the front and back surfaces meeting each other at opposing cutting edges, the front surface being beveled and having a first solid bevel face and a second solid bevel face that meet each other along a centerline of the front surface; a base portion having a first diameter and comprising a base surface disposed at a second end opposing the first end; a tube segment extending between the head segment and the base portion, the tube segment having a second diameter that is smaller than the first diameter, the second diameter being shorter than the widest portion of the head segment; and a fluid passageway passing radially centrally through the second end, radially centrally through the base portion, and passing through a single opening in the front surface of the head segment at a location where the first and second solid bevel faces join wherein, the opening extends normally to the fluid passageway from the widest portion of the head segment.