Drãgerwerk Ag & Co, Kgaa

Drager Medical Gmbh

Dragerwerk Aktiengesellschaft

Fraunhofer-gesellschaft Zur Foerderung Der Angewandten Forschung E.v.

Drager Medizintechnik Gmbh

Draeger Medical Gmbh

Dråger Medical Ag & Co. Kg

Gerd Peter

Thomas Maxeiner

Hans-Ullrich Hansmann

Götz Kullik

Hans Matthiessen

Hartmut Stark

Peter Dreyer

Thomas Wuske

Andreas Hengstenberg

Klaus Radomski

Sven Heyer

Michael Heidschmidt

Ralf Buchtal

Michael Riecke

Uwe Kühn

Uwe Schmid

Edmund Koch

Bernd-Michael Dicks

Robert Jahns

Martin Meyer

Wolfgang Falb

Tobias Heise

Sönke Faber

Frank Mecklenburg

Axel Lamprecht

Björn Spilker

Martin Kroh

Christoph Osterloh

Margit Ferstl

Wajih Al-Soufi

Otto Rosinke

A process (), with a computer program, a device () and a ventilation system () detect a leak in a patient gas module, which suctions and analyzes a continuous sample gas stream from a ventilated patient (), in a ventilation system for ventilating a patient (). The process includes a determination () of a first time curve of a carbon dioxide concentration in a breathing gas mixture of the patient () and the determination () of a second time curve of a concentration of another gas in the breathing gas mixture, which gas is different from carbon dioxide. The process () further includes a determination () of a statistical similarity indicator between the first time curve and the second time curve and the detection () of the leak based on the similarity indicator.

Process, computer program, device and ventilation system for the detection of a leak in a patient gas module

A photoacoustic sensor () is capable of detecting a predefined target gas in an area (Um). A process is capable of detecting the target gas with the use of such a sensor (). A sample chamber () holds a gas sample (Gp) to be tested. Electromagnetic waves (eW) from a radiation source () pass through the sample chamber () and the detection chamber (). The waves elicit in the detection chamber () an acoustic effect, which is measured by an acoustic sensor (). The acoustic effect is correlated with the concentration of the target gas in the sample chamber (). The detection chamber () is fluid-tightly sealed, is free from target gas and is filled with a replacement gas (Eg). The transmission of the replacement gas (Eg) has a spectral response similar to that of the transmission of the target gas in a predefined target gas wavelength range.

Photoacoustic sensor with replacement gas and detection process using such a sensor

Embodiments create an arrangement and a method for analyzing a fluid. The arrangement () for analyzing a fluid comprises beam splitter and mixer optics () configured to spatially mix an optical signal and split the same into at least two spatial sub-beams and a flow cell () configured to spectrally influence at least the two spatial sub-beams () by means of a probe of the fluid. The arrangement further comprises a measurement system () configured to measure the at least two spatially separated sub-beams ().

Arrangement and method for analyzing a fluid

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

An anesthesia system () is provided with an anesthesia apparatus (), at least one anesthetic dispenser () and at least one parameter detection device () for detecting at least one parameter of the at least one anesthetic dispenser () at the anesthesia apparatus (). The parameter detection device () is provided with an apparatus interface unit () with at least one camera () at the anesthesia apparatus () and with a dispenser interface unit () with at least one image pattern () at the at least one anesthetic dispenser (). The at least one image pattern () can be detected by the camera (), and the dispenser interface unit () is a passive dispenser interface unit ().

Anesthesia system

A breathing gas system and water trap () is improved in respect to the reliability of operation and has an emptying device. The water trap () has a gas inlet (), which meets a first water separating membrane () via a connection line. The connection line leads into a water tank () located deeper in the incoming flow direction from the first water separating membrane () and into a gas measuring device () with vacuum on the discharge side from the first water separating membrane () from the water trap (). The water tank () has a rinsing gas flow line, which is arranged above the liquid level, leads upward via a gas-permeable membrane () and is likewise connected to the applied vacuum of the gas measuring device (). The water tank () has a water transport line for emptying the water tank (), which water transport line extends into the liquid and is provided with a downstream vacuum via a nonreturn valve () and a downstream liquid pump () or via a solenoid valve (). The water trap () is equipped with a filling level detection system (), which is connected to a control and analyzing unit (). The control and analyzing unit () is connected to the liquid pump () or to the solenoid valve (), so that the water tank () can be emptied as a function of the signal of the filling level detection system ().

Water trap with an emptying device

A water trap () improved with respect to handling and operational safety includes: two semipermeable membranes () and at least one tank (), wherein the membranes have a water penetration pressure greater than 750 hPa and are made of the same or different PTFE laminates. The gas flow is divided in a ratio between 10:90 and 25:75 into the flush-/purge branch and analysis branch to the sensors () and a path parallel to the sensors (), respectively, with the aid of the membranes and downstream filter elements and via the material and configuration.

Water trap

A device with a water trap. The device has a gas sensor and is designed to send a gas sample flow through the water trap () and to feed it to the gas sensor (). The water trap () is designed to be separably connected to the device. The device has a mount for connection to the water trap. The water trap () has a radio frequency marking (). The device has a radio frequency detection device () with a detection area () for the radio frequency marking, which is designed to detect the radio frequency marking in the detection area and to generate a marking signal, which represents marking information of the radio frequency marking. The device is designed to be controlled as a function of the marking signal.

Device with a detectably designed water trap and process for detecting a water trap

A device for the analysis of the qualitative, optionally also the quantitative composition of gases, uses measuring light of known spectral composition that can pass through the gas to be analyzed and the gas can be caused to interact. A detector arrangement is present, which can detect light originating from the sites of the interaction between the measuring light and the gas to be analyzed. At least one refractive-diffractive optical element is provided, which is transparent over its entire surface and contributes to a wavelength-dependent imaging of the light to be detected onto the detector arrangement in a transmitting manner. The refractive-diffractive optical element is arranged in the ray path between the area in which the interaction between the gas to be analyzed and the measuring light takes place and the detector arrangement.

Device for the analysis of the qualitative composition of gases

A water trap for a sample gas flow includes a housing 1 fastened to a holder 2. The housing 1 has a tank 3 for receiving liquids and gases. Above the tank 3, the housing 1 contains a first chamber divided by a first hydrophobic membrane 10. The lower divided part 12 of the first chamber is connected to the sample gas flow via the holder 2 on the inlet side and to the gas space in the tank 3 on the outlet side. The upper divided part 11 of the first chamber is connected to a gas analyzer 4 via the holder 2 and is connected to a vacuum. The housing 1 contains a second chamber divided by a second hydrophobic membrane 20. The lower divided part 22 of the second chamber is connected to the gas space in the tank 3 at a point 18 which is located lower in the direction of the liquid level and relative to the entry of the connection line from the first chamber. The upper divided part 21 of the second chamber is connected to a volume flow meter 8 and to the same vacuum. The free areas through which the gas flows and the pore sizes of the first and second hydrophobic membranes are selected so that the ratio of the gas volume flow through the first and second hydrophobic membranes is in the range of 5:1 to 20:1.

Water trap for a sample gas flow

An optical gas analyzer for measuring the percentage of components in a gas phase by IR absorption, containing a power source, a measuring path containing the gas sample, a photoelectric receiver with an evaluation circuit arranged downstream of it, which receiver detects the IR radiation from the measuring path, and a plurality of filters, which can be introduced one after another into the beam path at a predetermined filter change frequency f, wherein measured signals belonging to the filters are sent by the receiver due to the radiation extinction in the measuring path, is to be improved such that different components in the gas sample can be detected in a simple manner and at good selectivity. To accomplish this object, the receiver is a pyroelectric detector, the evaluation circuit has elements for the evaluation of the voltage signal of the pyroelectric detector, the filter change frequency f is set at a value in the range of the declining branch of the frequency response of the voltage signal, and the pyroelectric detector is selected to be such that the declining branch of the voltage signal has a decline of -20 dB per decade.

Optical gas analyzer

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Lübeck, Germany

Gerd Peter