Three-position plungers, film coated plungers and related syringe assemblies

US11857771B2 · kind B2 · utility

Assignee

• SIO2 MEDICAL PRODUCTS, LLC · US

Inventors

• Jean-Pierre Giraud · Paris, FR
• Bernard Sol · Maisons-Alfort, FR
• Robert J. Pangborn · Harbor Springs, US
• Robert S. Abrams · Albany, US
• Joseph W. Rogers · Whitemarsh, US
• Peter J. Sagona · Pottstown, US
• Michael J. Mims · Auburn, US

Key dates

• Filing date: Nov 30, 2020
• Grant date: Jan 2, 2024
• Expiry date: Dec 22, 2041

Classification

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

Abstract

A three-position plunger is provided including a sleeve having an opening at a distal end, a pre-load cavity proximal to and in communication with the opening, a first cavity proximal to and in communication with the pre-load cavity, a second cavity proximal to and in communication with the pre-load cavity, and at least one rib. The rib(s) is generally aligned with the first cavity. The plunger further includes an insert configured to be displaced from the pre-load cavity to the first cavity and from the first cavity to the second cavity. The insert is configured to provide support for the compression of the rib(s) when the insert is positioned in the first cavity.