Unl Holdings LLC

Unitract Syringe Pty Ltd

Joel M Ondrejicka

Craig Stephen Thorley

Joseph Hermes Kaal

Christopher Charles Rafferty

Philip A Weaver

Katlin Marie Lumme

Katlin M Adlon

An actuation mechanism for an automatic injector includes a first actuation spring, a first actuation pill, a second actuation spring, and a second actuation pill. In an initial configuration the first actuation spring resides in a compressed, energized state substantially within an upper portion of first actuation pill and the second actuation spring resides in a compressed, energized state between the first actuation pill and the second actuation pill. An automatic injector includes a housing, an activation mechanism, an actuation mechanism, and a syringe cartridge having a plunger and a needle assembly. A retractable syringe may be utilized as a syringe cartridge, such as a prefilled retractable syringe with integrated safety features which retract the needle after use. The automatic injector may be utilized to inject the needle, deliver a drug treatment, and activate retraction of the needle. Methods of assembly and operation are also provided.

Auto-injector for retractable prefilled syringe

Growing community of inventors

Lewisberry, PA, United States of America

Joel M Ondrejicka