Drager Medical Gmbh

Drãgerwerk Ag & Co, Kgaa

Dr&auml;gerwerk Aktiengesellschaft

Michael Riecke

Norbert Wruck

Götz Kullik

Hans-Ullrich Hansmann

Dirk-Stefan Reichert

Andreas Hengstenberg

Gerd Peter

Uwe Kühn

Karl-Ludwig Gippert

Lothar Kleinschmidt

Thorsten Bruhn

A dispensing device for dispensing anesthetic in a breathing gas stream includes a flow duct () for an anesthetic-containing breathing gas stream, a control unit () and a first temperature sensor (). An anesthetic feed device () has an evaporation surface () arranged in the flow duct (). The first temperature sensor () detects the temperature of the evaporation surface () and sends a first temperature signal (T) to the control unit (). A second temperature sensor () detects the temperature of the breathing gas stream in the flow duct () and sends a second temperature signal (T) to the control unit (). The control unit () is configured to determine an anesthetic concentration based on the first and second temperature signals (T, T).

Dispensing device for introducing an anesthetic into a breathing gas stream

A devicewithdraws a breathing gas stream (A) from a ventilation system (B) and transports the breathing gas stream (A) to a gas analysis system (G). The devicehas a tubular configuration with an inner side () and with an outer side () and includes two tube sections (') and a drying stage () with an inner side (&#x2032;) and with an outer side (&#x2032;), and at least one liquid storage device (). The drying stage () includes a gas-tight and moisture-permeable material that transports moisture from the inner side (&#x2032;) of the drying stage () through the gas-tight and moisture-permeable material to the outer side () of the tubular device (). The drying stage () and/or the liquid storage device () is arranged at least partially between the two tube sections (&#x2032;).

Device for withdrawing and for transporting a breathing gas stream

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

An anesthetic gas intermediate storage unit is provided having a first gas duct for passing through inspiration gas, a second gas duct for passing through expiration gas and an adsorption material (), which can be influenced electrically, for an anesthetic, which is carried by a gas. The adsorption material is arranged in at least one gas duct for passing through breathing gas, and with a device for admitting expiration gas and inspiration gas alternatingly to the adsorption material (), at least at an identical area for the intermediate storage of the anesthetic from the expiration gas to the inspiration gas. The device has openings, which divert the expiration gas and inspiration gas flowing in and out such that expiration gas and inspiration gas are admitted to the stationary adsorption material () alternatingly at an identical area.

Anesthetic gas intermediate storage unit with adsorption characteristics which can be influenced electrically

A device is provided for adsorbing and desorbing anesthetic has good control of anesthetic dispensing such as in an anesthetic system. An adsorption filter is provided with adsorption beds (), which can be pivoted between an inspiration line () and an expiration line (). The anesthetic is dispensed in the expiration line () on the incoming flow side of the adsorption bed () arranged there.

Device for adsorbing and desorbing anesthetic

A process and a device are provided for separating carbon dioxide from a breathing gas mixture by means of a 'Fixed Site Carrier' membrane. The breathing gas mixture is guided in the device on a side of a selective, semipermeable membrane, which is provided with amine groups, which are bound covalently to a polymer. Through the membrane, the transport of the components of the gas mixture can take place. The membrane is selected to be such that the permeability for COis substantially higher than the permeability for the other gas components of the breathing gas mixture. The membrane has or is associated with means for guiding the gas, which acts to guide the gas mixture on one side along the membrane. The membrane separates volume areas in which different COpartial pressures prevail from one another.

Process and device for separating carbon dioxide from a breathing gas mixture by means of a fixed site carrier membrane

An electrochemical cell for separating oxygen from the ambient air can be manufactured in a simple manner and inexpensively and both the electrodes and the electrolyte can be manufactured as thin layers. The electrochemical cell has a metallic housing plate ( ), a gas-permeable carrier plate ( ) located on the housing plate ( ), a system of layers on the carrier plate ( ), including a first electrode ( ), an electrolyte ( ) and a second electrode ( ) exposed to the ambient air, wherein the oxygen generated is drawn off via a discharge opening at the housing plate ( ).

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Lübeck, Germany

Michael Riecke