Vacuum demand valve

US6712095B2 · kind B2 · utility

Assignee

• Baxter International Inc. · US

Inventors

• Mark Williamson · Wonder Lake, US
• Scott R. Ariagno · Inverness, US
• Alan W. Marttila · Waukegan, US
• Arnold C. Bilstad · Deerfield, US
• Paul M. DiPerna · San Clemente, US
• Michael R. Prisco · Aurora, US
• David W. Pennington · Fox Lake, US
• Atif M. Yardimci · Vernon Hills, US
• Sidney T. Smith · Howell, US
• Mark C. Perry · McHenry, US
• Marc Bellotti · Libertyville, US

Key dates

• Filing date: Oct 7, 2002
• Grant date: Mar 30, 2004
• Expiry date: Oct 7, 2022

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T137/789
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

A vacuum demand valve for delivering a flowable material is disclosed. The valve has a housing having a proximal end, a distal end, an intermediate segment therebetween defining a passageway wherein the flowable substance can flow from the proximal end to the distal end. The housing can be a tubing. A valve member is located along the intermediate segment. The valve member has a closed condition wherein the flow of the flowable material from the proximal end to the distal end is stopped and an open condition wherein the flow of the flowable material from the proximal end to the distal end is unstopped. The valve member is biased in the closed condition and is responsive to a partial vacuum provided by the user through the passageway for placing the valve member in the open condition.