US Patent 10391259 Dose divider syringe

A syringe includes a barrel with an internal surface defining an internal bore therein, a plunger disposed within the internal bore of the barrel, and a dose divider disposed on the plunger. The dose divider includes a first end, a first abutment surface, and a second abutment surface. The first abutment surface is spaced apart from the first end in the axial direction by a first axial distance, and the second abutment surface is spaced apart from the first end in the axial direction by a second axial distance. The second abutment surface is spaced apart from the longitudinal axis of the plunger by a first radial distance, and the first radial distance is greater than a radial dimension from a longitudinal axis of the barrel to the internal surface of the barrel near a proximal end of the barrel.