Process, computer program, device and ventilation system for the detection of a leak in a patient gas module

US11717633B2 · kind B2 · utility

Assignee

• DRÄGERWERK AG & CO. KGAA · DE

Inventors

• Gerd Peter · Lübeck, DE
• Uwe Schmid · Wulfen, DE
• Christoph OSTERLOH · Lübeck, DE

Key dates

• Filing date: Dec 12, 2018
• Grant date: Aug 8, 2023
• Expiry date: Dec 21, 2039

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61M2230/437
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

A process (10), with a computer program, a device (30) and a ventilation system (40) detect a leak in a patient gas module, which suctions and analyzes a continuous sample gas stream from a ventilated patient (20), in a ventilation system for ventilating a patient (20). The process includes a determination (12) of a first time curve of a carbon dioxide concentration in a breathing gas mixture of the patient (20) and the determination (14) of a second time curve of a concentration of another gas in the breathing gas mixture, which gas is different from carbon dioxide. The process (10) further includes a determination (16) of a statistical similarity indicator between the first time curve and the second time curve and the detection (18) of the leak based on the similarity indicator.