Use of 1,1,1,2-Tetrafluoroethane for measuring lung function, especially for determining the functional residual capacity (FRC) of the lungs

US7662107B2 · kind B2 · utility

Assignee

• Dräger Medical AG & Co. KG · DE

Inventors

• Bernd-Michael DICKS · Damlos, DE
• Jochim Koch · Ratzeburg, DE

Key dates

• Filing date: Aug 14, 2006
• Grant date: Feb 16, 2010
• Expiry date: Jun 7, 2027

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61K49/00
• WIPO field: Pharmaceuticals
• WIPO sector: Chemistry

Abstract

1,1,1,2-Tetrafluoroethane (norflurane) is used as a tracer/trace gas for measuring the lung function because of its simple detectability, physiological harmlessness, environmental friendliness and ready availability. Especially advantageous is the possibility of the optical concentration measurement of 1,1,1,2-tetrafluoroethane for the measurement of the lung function and especially for the determination of the FRC during respiration during anesthesia, without cross sensitivity occurring during the measurement with respect to anesthetics.