De-airing oxygenator for treating blood in an extracorporeal blood circuit

US8518259B2 · kind B2 · utility

Assignee

• Medtronic, Inc. · US

Inventors

• Patrick J. Cloutier · Andover, US
• Robert W. Olsen · Plymouth, US
• Stephen Roller · Rockville, US
• Chris Plott · Windom, US
• Al McLevish · Apple Valley, US
• Ming Li · Roseville, US
• Michael Laxen · Minneapolis, US
• John Knoll · Brooklyn Park, US
• Gregory Hake · Elk River, US

Key dates

• Filing date: Jan 27, 2011
• Grant date: Aug 27, 2013
• Expiry date: Jan 6, 2032

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61M2206/20
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

An apparatus for de-aering, oxygenating and controlling a temperature of blood in an extracorporeal blood circuit. The apparatus includes a housing, a manifold body, a heat exchanger, and an oxygenator. A blood inlet tangentially directs blood into a first chamber of the housing. The manifold body is disposed in a second chamber, and includes a core and a plurality of vanes that define channels. The heat exchanger is arranged around the manifold body, and the oxygenator around the heat exchanger. The channels are open to the heat exchanger. An established blood flow path includes rotational flow within the first chamber to separate air from the blood, generally longitudinal flow from the first chamber and along the channels, and generally radial flow through the heat exchanger and the oxygenator. With this construction, gross air removal occurs prior to the blood passing through the heat exchanger and oxygenator.