Anesthetic dispensing device

US10682485B2 · kind B2 · utility

Assignee

• DRÄGERWERK AG & CO. KGAA · DE

Inventors

• Jürgen Manigel · Bad Schwartau, DE
• Uwe Bartels · Hamburg, DE
• Klaus Radomski · Wulfen, DE

Key dates

• Filing date: Dec 29, 2015
• Grant date: Jun 16, 2020
• Expiry date: Aug 28, 2038

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61M2205/52
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

An anesthetic dispensing device (1), to which a carrier gas stream is fed for enriching with anesthetic, has the gas stream split into two partial gas streams, one of which flows through a bypass channel (7) unchanged and the other of which is fed to an evaporation chamber (9), where the partial gas stream is saturated with anesthetic. In a mixing point (6), both partial gas streams are mixed to form an anesthetic gas stream, which leaves the anesthetic dispensing device through the anesthetic gas outlet (4). A control unit (2) is provided that is configured to generate a control signal for an electric motor drive (14) for adjusting the valve opening of the valve element (15) on the basis of a concentration of the anesthetic in the anesthetic gas needed at the anesthetic gas outlet (4) and at least one temperature-specific correction factor.