Patient data controlled respiration system

US4326513A · kind A · utility

Assignee

• DRAGERWERK AKTIEGESELLSCHAFT · DE

Inventors

• Volker Schulz · Heppenheim, DE
• Stefan Kunke · Wiesbaden, DE
• Ulrich Heim · Reinfeld, DE

Key dates

• Filing date: Jun 30, 1980
• Grant date: Apr 27, 1982
• Expiry date: Jun 30, 2000

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61M2230/205
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

A respiration system and method for minimizing the oxygen concentration of inspiration gas supplied to a patient while maintaining a desired arterial oxygen partial pressure in the patient comprising a regulator for changing the oxygen concentration of inspiration gas supplied to a respirator according to a desired nominal value therefor and a sensed value therefor taken from the patient, a control device for adjusting parameters of the breathing gas in the respirator supplied to the patient while maintaining the desired arterial oxygen partial pressure, and a minimizer connected to the control device for changing a direction of the adjustment when the oxygen concentration in the inspiration gas cannot be maintained within a range between a first sensed instantaneous value for the oxygen concentration in the inspiration gas and a lower limit set for that value.