Patent ID: 8216193
Filing Date: 2012-07-10
Classification: A61M

Abstract:
1. A syringe for administering multiple medicinal doses, the syringe comprising: a cylindrical tube having a first end, an opposing second end, a circular interior diameter, and a circular exterior diameter; a top rim connected to and encircling the first end of the tube, the top rim having a circular interior diameter that is smaller than the circular interior diameter of the tube, a circular exterior diameter that is greater than the circular exterior diameter of the tube, and an interior groove; a plunger disposed within the tube for medicinal dosing by forward movement of the plunger toward the second end of the tube; a rod having a command end, an opposing injection end releasably engaging the plunger, and a cruciform transversal section that is smaller than the interior diameter of the tube; a plurality of dosage-control members detachably connected to the rod by breakable structural weakenings spaced along two opposing sides of the rod, each dosage-control member having a cut in which the exterior diameter of the top rim fits to prevent forward and reverse movement of the rod when the top rim is received by the cut, such that removal of one dosage-control member from one of the two opposing sides of the rod permits forward movement of the rod and plunger until the top rim snaps into the cut of another dosage-control member detachably connected to the other of the two opposing sides of the rod; a plurality of flexible salient arms extending obliquely from the rod toward the command end in one-to-one correspondence with the dosage-control members, each salient arm extending into the interior groove of the top rim to prevent reverse movement of the rod when the top rim snaps into the cut of the corresponding dosage-control member; an elastomer seal attached to the second end of the tube; and a double-ended needle device having a first end for perforating the elastomer seal and an opposing second end for administering medicinal doses.