Systems, methods and apparatuses for pumping cassette-based therapies

US7238164B2 · kind B2 · utility

Assignees

• Baxter International Inc. · US
• Baxter Healthcare SA · CH

Inventors

• Robert W. Childers · Holiday, US
• Richard Avoy · Palm Harbor, US
• John Booras · Wildwood, US
• Joseph H. Bowman, Jr. · Lake Villa, US
• Paul M. Grippo · Libertyville, US
• Andrew D. Hopping · Largo, US
• David Howard · St. Petersburg, US
• Jeffrey W. Jerrell · Greenfield, US
• Benjamin Kellam · Palm Harbor, US
• Brian Lauman · Clearwater, US
• Sherwin Shang · Vernon Hills, US
• David Vescovi · Pinellas Park, US
• Tahua Yang · Darien, US
• Alex Anping Yu · Spring House, US

Key dates

• Filing date: Dec 31, 2002
• Grant date: Jul 3, 2007
• Expiry date: Apr 24, 2024

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61M2205/122
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

The present invention provides systems, methods and apparatuses for medical fluid delivery systems that employ a pumping cassette. In particular, the present invention provides systems, methods and apparatuses for cassette-based dialysis therapies including hemodialysis, hemofiltration, APD (including tidal modalities) and CFPD. The embodiments described include a combined pump/valve housing, a fail safe pump/valve arrangement, a cassette auto-alignment feature, a pumping membrane material, a multiplexing valve arrangement, an expert fluid pumping management system, an integral port vent and an in-line air separation chamber and combinations of each of these.