Dual chamber syringe with retractable needle

US8556854B2 · kind B2 · utility

Assignee

• Becton, Dickinson and Company · US

Inventors

• Ivan Zivkovic · Mahwah, US
• Jorgen Hager · Helsingborg, SE
• Ulf Handberg · Upplands Väsby, SE
• Gert Hanner · Gnosjö, SE
• Thomas Holma · Svängsta, SE
• Ulf Wahlberg · Helsingborg, SE

Key dates

• Filing date: Jul 20, 2011
• Grant date: Oct 15, 2013
• Expiry date: Jul 26, 2031

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61M2005/3227
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

Embodiments of a retractable syringe assembly are provided that include a dual syringe barrel configuration. One or more embodiments include reuse prevention features and features that prevent premature activation of the retraction mechanism. Methods for aspirating and expelling liquid from medical devices are also provided.