Cardiotomy and venous blood reservoir and method

US8303529B2 · kind B2 · utility

Assignee

• Medtronic, Inc. · US

Inventors

• Mark Wendler · St. Louis Park, US
• Ana Menk · Okabena, US
• Eric R. Fox · Prior Lake, US
• Ningze Sun · Shoreview, US
• Timothy Groen · Rush City, US
• Katherine S. Olig · Eden Prairie, US

Key dates

• Filing date: Apr 30, 2010
• Grant date: Nov 6, 2012
• Expiry date: May 3, 2031

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61M1/3632
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

A cardiotomy and venous blood reservoir, including a housing assembly, a venous inlet port, a venous sub-assembly, a cardiotomy inlet port, and a cardiotomy sub-assembly. The housing forms a chamber. The venous sub-assembly includes a downtube and a bowl. A diameter of the downtube lumen increases to a downstream end. The bowl forms a floor surface for receiving flow from the lumen. The cardiotomy sub-assembly includes a dish and an inner post. The dish defines an aperture. The inner post extends from the dish and forms a guide surface received within the central aperture and forming an undulating curvature increasing to a diameter greater than the diameter of the central aperture. Cardiotomy liquid drops from the dish fall on to the undulating, closely positioned guide surface with minimal splashing.