Retractable Technologies, Inc.
Medical Syringe with Retractable Needle and Modified Plunger Handle with Concave Pressure Application Surface

Abstract:

A medical syringe having a forwardly projecting needle that is selectively retractable following use and also having a specially configured plunger handle and thumb cap that cooperate to form a concave pressure application surface ("CPAS"). The concave pressure application surface at the rear of the plunger handle enables the subject medical syringe to achieve functional advantages, each with an associated therapeutic benefit, that are not achieved with use of the prior art devices.