Patent ID: 8490621
Filing Date: 2013-07-23
Classification: A61B,A61M

Abstract:
1. A device for respirating patients, respiration humidification or for an anesthesia reflector, the device comprising: humidification/anesthetic concentration means for increasing the humidity and/or the anesthetic concentration in breathing gas; a gas channel for passing through breathing gas; a medium having an optical density higher than that of breathing gas and defining a boundary surface between the breathing gas and said medium; a control and/or regulating means connected to the humidification/anesthetic concentration means; a temperature sensor connected to the control and/or regulating means; and a dew sensor for measuring the humidity contained in the breathing air, said dew sensor including a generating means for generating electromagnetic radiation and said medium allowing at least a portion of the generated electromagnetic radiation to pass through the medium and said dew sensor including a detection means for detecting electromagnetic radiation, wherein said dew sensor determines a change in a reflection of electromagnetic radiation at the boundary surface between the breathing gas and the medium having the optical density higher than that of breathing gas as an indicator of a change in dew formation at said boundary surface, said control and/or regulating means being connected to said dew sensor and acting on the humidification/anesthetic concentration means for increasing the humidity in the breathing gas until the humidity reaches a limit value corresponding to the detected change in dew formation at said boundary surface.