Fluid injector with syringe engagement mechanism

US11975172B2 · kind B2 · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Kevin P. Cowan · Washington, US
• Michael A. Spohn · Butler, US
• Adam T. C. Steege · Durham, US
• Jessie Delgado · Durham, US
• Keith Lipford · Severna Park, US
• Chet Larrow · Baltimore, US
• Mariano Mumpower · Baltimore, US
• Danica Gordon · Baltimore, US

Key dates

• Filing date: Dec 17, 2021
• Grant date: May 7, 2024
• Expiry date: Dec 17, 2041

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61M2005/14553
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

An engagement mechanism associated with a reciprocally movable piston of a fluid injector is configured for releasably engaging an engagement portion at a proximal end of a rolling diaphragm syringe having a flexible sidewall configured for rolling upon itself when acted upon by the piston. The engagement mechanism has a plurality of engagement elements reversibly and radially movable relative to the engagement portion of the syringe between a first position, where the plurality of engagement elements are disengaged from the engagement portion of the syringe, and a second position, where the plurality of engagement elements are engaged with the engagement portion of the syringe. The engagement mechanism further has a drive mechanism for moving the plurality of engagement elements between the first position and the second position.