Patent ID: 9579259
Date: 2017-02-28
CPC Classifications: A61J,A61M,F04C

Claim:
1. A medicament dispensing system comprising: a syringe comprising a cylindrical syringe body, which comprises at its lower end a base, a pair of lugs extending laterally outwardly from said base, and a pair of substantially peripheral U-shaped flanges which extend vertically from said base and which almost completely surround said cylindrical syringe body; a dispensing/suction pivot at the upper end of said syringe body, which extends vertically from a pivot base located at the center of said upper surface, wherein said dispensing/suction pivot defines a dispensing/suction conduit which extends inwardly therethrough and which is in fluid communication with an inner vacuum chamber of said syringe body; wherein said syringe further comprises a piston formed by a plurality of vanes radially equidistantly separated from each other to form a single body, said piston comprising at its lower end a circular base and a portion wherein each of said plurality of vanes has a reduced radial size near circular base, and at its upper end a circular piston head which has a diameter slightly greater than an inner diameter of said cylindrical syringe body in the range of thousandths of a millimeter, said piston head defining a conical upper surface and at its outer edge a surface which is straight and smooth to a mirror-polished degree, so as to be in contact with a straight and smooth inner surface of said cylindrical syringe body; an adapter having a substantially cylindrical shape with a portion of its outer wall having a gradually reduced diameter to facilitate insertion in a tight manner into a vial containing medicament; said adapter defining a hole through its center which is reinforced by a plurality of propeller shaped reinforcements radially disposed between said hole and said outer wall, an inverted cone which is disposed at the inner lower end of said adapter to promote the entire emptying of the medicament when said adapter is inserted in said vial, and a lip located at the outer upper end of said adapter, which serves as a stop to prevent said adapter from being fully inserted into said vial; wherein said hole is adapted to receive said dispensing suction pivot of said syringe so as to carry out the medicament suction; and wherein each of said plurality of vanes further comprises one or more ridges disposed along a segmented portion of each of said plurality of vanes near said piston head, wherein an outer edge of each of said one or more ridges coincides with said outer edge of said piston head in order to form a double support point for said piston and to minimize oscillation or pitching of said piston during use, and wherein said piston head facilitates a desired vacuum effect into said vacuum chamber for suction of said medicament without requiring on said piston head a coating of flexible material.