Patent ID: 6517521
Filing Date: 2003-02-11
Classification: A61M

Abstract:
A needle for injecting a medication through the skin, said needle comprising:a hub; and an essentially straight shaft having a first end connected to said hub, said shaft comprising a plurality of non-overlapping longitudinal segments and having a longitudinal axis from which four radial planes extend at about ninety-degree intervals, a bore there through that is disposed along said longitudinal axis, and a sharpened end having a single, axially-oriented exit port that has a central point situated on said longitudinal axis, a longer diameter and a shorter diameter and that is in fluid communication with said bore, the length of said shorter diameter being approximately equal to the internal diameter of said bore; wherein said shaft is provided with a plurality of lateral ports that are elliptical in cross section and located adjacent to said sharpened end, each of which ports has a width and a height that is smaller than said width and that is approximately the same as the internal diameter of said bore, is in fluid communication with said bore and is located in a different longitudinal segment and has a center that is located in a different radial plane; and wherein the center of one of said elliptical lateral ports lies in the same radial plane as the longer diameter of the exit port.