Humidifying device for breathing gases

US8505534B2 · kind B2 · utility

Assignee

• Dräger Medical GmbH · DE

Inventors

• Kai Brieger · Wulfen, DE
• Thomas Rossen · Lübeck, DE
• Markus Kämer · Langenau, DE
• Ludger Tappehorn · Stockelsdorf, DE

Key dates

• Filing date: Feb 16, 2010
• Grant date: Aug 13, 2013
• Expiry date: Apr 6, 2031

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61M2205/3382
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

A humidifying device for breathing gases. The humidifying device has a housing with a recess, a heater, an evaporating chamber with a water feed, a breathing gas feed channel, a breathing gas outlet channel and at least one float element and at least one filling level indicator. The evaporating chamber can be introduced at least partially into the recess and is in contact with the heater to heat water and is designed to receive water from a water reservoir through the water feed. The at least one float element is guided in a floatingly movable manner on the water and is designed to close the feed of water above a water level set point in the evaporating chamber, and the at least one filling level indicator is designed to recognize the drop of the water level from the water level set point as a function of the position of the at least one float element.