System and method for high flow oxygen therapy

US11478596B2 · kind B2 · utility

Assignee

• Covidien LP · US

Inventors

• Mark A. McGann · Ballybrittas, IE
• James Curley · Kilcormac, IE
• Paul J. Gallogly · Roscommon, IE
• Kieran Donlon · Longford, IE
• Seamus Maguire · Athlone, IE
• Ronald Thiessen · Stave Falls, CA
• Erin F. McLaughlin · Langley, CA
• Richard Kauc · Milton, CA
• Graham B. Fleming · Athlone, IE

Key dates

• Filing date: Jul 9, 2020
• Grant date: Oct 25, 2022
• Expiry date: Apr 22, 2041

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61M2230/432
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

A method of method of high flow oxygen therapy (HFOT) and carbon dioxide (CO2) monitoring includes delivering high flow oxygen therapy (HFOT) via a central lumen of a nasal cannula, the nasal cannula comprising a proximal end, a distal end positioned within a pharynx region of a patient's airway, and the central lumen and a sampling lumen formed within a wall of the nasal cannula. The method also includes receiving sampled exhaled breath of the patient via the sampling lumen at a CO2 monitor, wherein the sampling lumen is configured to sample the exhaled breath at the pharynx region through the CO2-permeable membrane and direct the sampled exhaled breath to a CO2 monitor fluidly coupled to the sampling lumen and determining a level of CO2 in the exhaled breath using the CO2 monitor.