Convertible plungers and methods for assembling the same in a medical barrel

US10918800B2 · kind B2 · utility

Assignee

• SIO2 MEDICAL PRODUCTS, LLC · US

Inventors

• Brian Russell Lilly · Auburn, US
• Kenneth Wade Kelly · Auburn, US
• Joseph W. Rogers · Whitemarsh, US
• Jean-Pierre Giraud · Paris, FR
• Bruce Rabinne · Boissy-le-Châtel, FR
• Herve Pichot · Chennevières-sur-Marne, FR
• Benjamin Hunt · Auburn, US
• Zachary Freeman · Auburn, US
• Dalton Roe · Auburn, US
• Robert S. Abrams · Albany, US

Key dates

• Filing date: Jan 13, 2017
• Grant date: Feb 16, 2021
• Expiry date: Sep 22, 2037

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61M2207/00
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

Disclosed are plunger assemblies including various convertible plungers and methods of making the same. Each plunger assembly is configured for disposition within a barrel of a medical container, e.g., a syringe, and displaced within the barrel from an engagement position to a release position. The engagement position is configured to provide a compression seal between a storage sealing section of the plunger and an inner wall of the syringe barrel. In the release position, the compression seal is reduced or eliminated. Also disclosed are methods for making convertible plungers and assembling them into syringes, e.g., pre-filled syringes.