Abstract: The present invention provides reusable safety syringe devices for use as a teaching and practice tool. The safety syringe device of the present invention comprises four primary parts: (1) a first tubular member; (2) a second tubular member disposed within an inner annular cavity of the first tubular member; (3) a syringe secured within an inner annular cavity of the second tubular member; and (4) a plunger rod, wherein the plunger rod comprises a proximal end and a distal end, wherein the proximal end and distal end are connected by a shaft, wherein the proximal end comprises a first plunger rod flange having a first diameter and a removable second plunger rod flange having a second diameter, wherein the first diameter is smaller than the second diameter and the first plunger rod flange is located below the second plunger rod flange on the shaft.

Abstract: A stopper retainer comprises a base having an upper surface, a lower surface, and a perimeter; a sidewall joined to the base around the perimeter, the sidewall having a raised height to define an interior cavity with the base; and a plurality of projections extending from the lower surface of the base, each of the plurality of projections being sized to at least partially fit within a lumen of a syringe barrel.

Abstract: A torque-limiting device comprises a plunger rod holder defining a piston cavity for receiving at least a portion of a plunger rod, a moveable stop element, a dowel disposed adjacent the stop element, a spring disposed adjacent the dowel, and a syringe barrel holder defining a barrel cavity for receiving at least a portion of a syringe barrel.

Abstract: A stopper retainer comprises a body having an upper surface, a lower surface, and at least one fastener, and a plurality of projections extending from the lower surface of the body, each of the plurality of projections being sized to at least partially fit within a lumen of a syringe barrel.