Check valve assembly

US11125354B2 · kind B2 · utility

Assignee

• ILLINOIS TOOL WORKS INC. · US

Inventors

• Colm M. Carmody · Charleville, IE
• Gerard G. Henn · Limerick, IE
• Robert R. Schaser · Algonquin, US
• Raymond Jozwik · Hendersonville, US
• David Drake Thompson · Greenville, US
• Michael Leonhard · West Bend, US
• Brendan Casey · Barna, IE
• Yash Siddhartha · Chicago, US
• Elizabeth O Connor · Newcastle West, IE

Key dates

• Filing date: Sep 27, 2019
• Grant date: Sep 21, 2021
• Expiry date: Dec 10, 2039

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T137/7838
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

An infusion set check valve assembly includes a self-contained housing that defines inlet ports and an outlet port. The assembly also includes at least one check valve disposed within the self-contained housing between the outlet channel and at least one of the inlet ports. The at least one check valve is configured to open for a first fluid to flow from a first inlet to a patient line via an outlet channel while a second fluid also flows from a second inlet to the patient line via the outlet channel. The at least one check valve closes to prevent the first fluid from flowing to the patient line via the outlet channel while the second fluid flows to the patient line.