Drager Medical Gmbh

Respironics, Inc.

Ric Investments, Inc.

Dräger Safety Ag&co. Kgaa

Inselspital Bern, Direktion Lehre Und Forschung

Drãgerwerk Ag & Co, Kgaa

Kai Kück

Joseph Allen Orr

Frank Franz

Lara Brewer

Peter Matthias Schumacher

Maral Haar

Susanne Stahlkopf

Thomas Bouillon

Hans-Ullrich Hansmann

Hans Matthiessen

Jürgen Manigel

Marcel Voigt

Steffen Schmitt

Frank Mett

Peter Tschuncky

Tilman Von Blumenthal

Andreas Mohrmann

Andreas Hengstenberg

Arne Tröllsch

Martin Luginbühl

Jörg-Uwe Meyer

Wilfried Buschke

Uwe Kühn

Cornelia Schrader

Michael Wilkening

Detlef Ott

Bela Stetzer

Franz Frank

A process is provided for monitoring a patient being anesthetized, as well as a process for determining a combined effect of different anesthetics used. Devices for carrying out the processes are also provided.

Process and device for monitoring a patient during anesthesia and for determining the combined effect of a plurality of anesthetics

A stretchable belt () provided for medical purposes for use on the body of a patient has at least one sensor () for detecting at least one parameter of the patient's body. An adaptation to different body sizes and motions of the patient is provided without separate length adjusting members being necessary or without the need to stock different belt sizes. Furthermore, the belt is able to be manufactured at a low cost and makes possible simple and reliable handling, even for patients. The belt material () has at least one material area () with a lower spring rate in the longitudinal extension than at least one material area () with a higher spring rate of the belt ().

Belt with sensors

Methods for noninvasively determining a pulmonary capillary blood flow or a cardiac output of a subject include determining data of the amount of gas exchanged between blood and gas in lungs of the subject, as well as data of an indicator of the content of the gas in blood of the subject. Such a determination may be made during two or more different states of ventilation. A geometric relationship is identified between data points, with any data points outlying the geometric relationship being disregarded. The remaining data points may be used to estimate or calculate a measure of pulmonary capillary blood flow or cardiac output. Systems that include elements that are configured to effect such methods are also disclosed.

Systems and methods for accurately, substantially noninvasively determining pulmonary capillary blood flow or cardiac output

A device () and a corresponding method are provided for determining and/or monitoring the respiration rate based on measurement with more than one sensor (). The device may be part of a monitor for determining and/or monitoring the respiration rate. The second and/or additional sensors are different form the first sensor and have a different manor of operation from the first sensor.

Device and method for determining a respiration rate

Methods for estimating the volume of the carbon dioxide stores of an individual's respiratory tract include determining a carbon dioxide store volume at which a correlation between corresponding signals of carbon dioxide elimination and an indicator of the content of carbon dioxide in blood of the individual is optimized. The estimate of the volume of carbon dioxide stores, which comprises a model of the respiratory tract, or lungs, of the individual, may be used as a transformation to improve the accuracy of one or both of the carbon dioxide elimination and carbon dioxide content signals. Transformation, or filtering, algorithms are also disclosed, as are systems in which the methods and algorithms may be used. The methods, algorithms, and systems may be used to accurately and noninvasively determine one or both of the pulmonary capillary blood flow and cardiac output of the individual.

Methods and apparatus for improving time domain relationships between signals obtained from respiration

A process for monitoring a patient by a monitoring device is provided in which simplified monitoring of the patient can be carried out on the basis of a suitable selection of the parameter values and/or ranges displayed in a special manner. A suitable device () is provided for carrying out the process.

Process and device for monitoring a patient

A compressed air respirator with prolonged operating time due to rebreathing. The compressed air reservoir includes a compressed air reserve with a connected demand air supply valve, a reversible breathing gas reservoir () with a registering device () detecting the filling level of the breathing gas reservoir (), and with an inspiration and expiration line () for the user of the apparatus. A valve () is connected with the inspiration and expiration line () and, on the inlet side, with the compressed air reserve () with a demand air supply valve () and with the breathing gas reservoir () and, on the outlet side, with the ambient air () and with the breathing gas reservoir (). The valve means () is cyclically reversed by the registering device () in two phases such that depending on the filling level of the breathing gas reservoir (), the inspiration line () is first connected with the compressed air reserve () and the expiration line () with the breathing gas reservoir () during a first phase until the filling level of the breathing gas reservoir () reaches an upper reversing point for the valve means (), so that the inspiration line () is connected with the breathing gas reservoir () and the expiration line () with the ambient air () during a second phase until the filling level of the breathing gas reservoir () reaches a lower reversing point for the valve means () and the latter is again reversed as in the first phase.

Compressed air respirator

A compressed air respirator has prolonged operating time due to a rebreathing feature. The respirator has a compressed air reserve () with a connected demand air supply valve (), wherein the demand air supply valve () is connected with a reversible breathing gas reservoir () with adjustable volume. A rebreathing line () for the user of the apparatus has an expiration valve (), wherein the rebreathing line () is connected with the breathing gas reservoir ().

Algorithms, systems, and methods for estimating carbon dioxide stores, transforming respiratory gas measurements, and obtaining accurate noninvasive pulmonary capillary blood flow and cardiac output measurements

A method for noninvasively determining the pulmonary capillary blood flow or cardiac output of a patient includes measurement of respiratory flow and carbon dioxide pressure of the patient's breathing. These measurements are used to calculate carbon dioxide elimination and an indicator of the carbon dioxide content of the patient's blood. A geometric relationship between the carbon dioxide elimination data and the data of the indicator of carbon dioxide content is determined. At least one set of the data is modified and at least one other determination of a geometric relationship between the data is made to find the most accurate data set. The data may be modified by filtering or clustering. A slope of at least a portion of the geometric relationship is then used to determine the pulmonary capillary blood flow or cardiac output of the patient.

Methods for accurately, substantially noninvasively determining pulmonary capillary blood flow, cardiac output, and mixed venous carbon dioxide content

ALGORITHMS, SYSTEMS, AND METHODS FOR ESTIMATING CARBON DIOXIDE STORES, TRANSFORMING RESPIRATORY GAS MEASUREMENTS, AND OBTAINING ACCURATE NONINVASIVE PULMONARY CAPILLARY BLOOD FLOW AND CARDIAC OUTPUT MEASUREMENTS

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Hamburg, Germany

Kai Kück