Retractable needle adapters and safety syringes

US8979795B2 · kind B2 · utility

Assignee

• UNITRACT SYRINGE PTY LTD · AU

Inventors

• Kevin Bokelman · Village of La Jolla, US
• Eduardo Ho · Vista, US
• Robert Scott Russo · Charlottesville, US
• Brandon J. McKee · Nesquehoning, US
• John W. Carosi · Collegeville, US
• Christian P. Brandt · York, US
• Jyoti Gupta · Singapore, SG
• Ramin Mojdehbakhsh · Sparta, US

Key dates

• Filing date: Mar 12, 2014
• Grant date: Mar 17, 2015
• Expiry date: Mar 12, 2034

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T29/4984
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

Barrel adapters for safety syringes include a barrel and a plunger assembly adapted to move within the barrel, a barrel tip adapted to be sealingly engaged with a distal end of the barrel and a needle retraction mechanism having a needle subassembly and an actuator subassembly. The needle subassembly includes a needle, and a needle-over-mold (NOM) through which the needle extends. The needle subassembly is disposed at least partially within the barrel tip, and adapted to move from an injection position in which the needle extends from a distal end of the barrel tip to a retracted position in which the needle is disposed within at least one of the barrel tip or the barrel. The actuator subassembly includes a needle seal, a push-bar, and an actuator surface. The needle retraction mechanism includes a biasing member and an actuable locking arrangement. A syringe includes such barrel adapters.