Patent ID: 7364570
Filing Date: 2008-04-29
Classification: A61B,A61M

Abstract:
1. A controlled volume injection/aspiration device comprising: a syringe having a body for containing a medicament, a needle and a piston slidably disposed in said body along a body centerline; a shell for receiving the syringe body with said needle projecting from said shell; a plunger rack slidably disposed along the body centerline within said shell for moving said piston along the body centerline; a manually operated control rod disposed in an operative parallel relationship with said centerline, and slidable therealong, for moving said plunger rack in a stepwise forward direction causing said piston to eject discrete doses of medication from said syringe body through said needle and in a stepwise reverse direction causing said piston to aspirate discrete quantities of fluid into said syringe body through said needle; an injecting pawl, connected to said control rod, for engaging said plunger rack and moving said plunger rack in said stepwise forward direction and disengaging said plunger rack upon movement in said stepwise reverse direction; and a single finger accessible button attached to the control rod and extending exterior to said shell for sliding the control rod parallel to the body centerline causing ejection of medicament when moved in one direction and to aspirate fluid when moved in an opposite direction.