Drager Medical Gmbh

Dräger Medical Ag & Co Kgaa

Dråger Medical Ag & Co. Kg

Karl-Ludwig Gippert

Dirk-Stefan Reichert

Rainer Kunz

Michael Heidschmidt

Jürgen Müller

Claus Bunke

Matthias Witt

Sven Heyer

Thomas Rossen

Michael Riecke

Thomas Lutter

Lothar Kleinschmidt

Thorsten Bruhn

A wick for an anesthetic evaporator is provided as a dimensionally stable wick body () transporting anesthetic by means of capillary force is provided. The wick body comprises a hollow cylinder as well as webs by which a gas-carrying cavity is formed.

Wick for an anesthetic evaporator

A dispensing element of an anesthetic vaporizer is provided that can be manufactured in a simple manner and makes it possible to dispense anesthetic over a broad setting range. The dispensing element () includes two, longitudinally extending dispensing channels (), which are connected to one another in terms of flow by means of a connection channel (). The gas flows from one of the dispensing channels () into the other dispensing channel () via the connection channel ().

Anesthetic vaporizer

A device for mixing anesthetic vapor with anesthetic gas has a pressure limitation feature achieved in a simple manner. The device has a valve device (), with which the evaporator is switched on and off. The valve device () is equipped with an overpressure release device ().

Device for mixing anesthetic vapor with anesthetic gas

An anesthetic evaporator with a pressure control circuit has a differential pressure pick-up () can be calibrated in a simple manner. A switchover device () is provided according to the present invention at a bypass gap (), which is designed to connect the gas inlet () directly with the gas outlet () via a first bypass line () and to bridge over the bypass gap () via a second bypass line () connected to a ventilation duct () in a first switching position. The gas flow from the gas inlet () to the gas outlet () is established via the bypass line () in a second switching position. The calibration of the differential pressure pick-up () with the pneumatic connections () is performed in the first switching position of the switchover means () via the ventilation duct (), which is open toward the ambient atmosphere.

A wick arrangement for an anesthetic evaporator includes a wick with a carrier material () that is essentially impermeable to gas provided with wick material () on both sides. A great path length is provided for saturating the gas with anesthetic vapor in the smallest possible installation volume by providing flow channels such as helical flow channels () extending helically on both sides of the wick. The gas flow is led in counterflow in the flow channels () by a housing ().

Wick arrangement for an anesthetic evaporator

Growing community of inventors

Lübeck, Germany

Karl-Ludwig Gippert