Patents Assigned to Dräger Medizintechnik GmbH
  • Patent number: 6745767
    Abstract: A respiration system is provided with an electrically driven rotary compressor as a gas delivery unit. The system makes a low-noise mounting of the gas delivery wheel possible. The gas delivery wheel can also be washed and sterilized and ensures a reliable separation of the breathing gas from the electric components. The respiration system rotary compressor is mounted magnetically axially and radially during operation.
    Type: Grant
    Filed: March 30, 2001
    Date of Patent: June 8, 2004
    Assignee: Dräger Medizintechnik GmbH
    Inventors: Götz Kullik, Hans-Ullrich Hansmann, Andreas Krause
  • Patent number: 6742399
    Abstract: A respiratory flow sensor, which is suitable for use near a patient, covers a broad gas volume flow measuring range with a low breathing flow resistance and good, reproducible measured signal quality at the same time. The respiratory flow sensor has a first air resistance body (3) with a blunt end and with an opposite pointed end. The air resistance body (3) is arranged between the measuring transducer (5), of which there is at least one, and the patient-side end (P) of the respiratory flow sensor. The pointed end of the first air resistance body (3) points toward the measuring transducer (5). A second air resistance body (4) with a pointed end is arranged between the measuring transducer (5), of which there is at least one, and the end of the respiratory flow sensor that is away from the patient. The pointed end of the second air resistance body (4) also points toward the measuring transducer (5).
    Type: Grant
    Filed: May 1, 2001
    Date of Patent: June 1, 2004
    Assignee: Dräger Medizintechnik GmbH
    Inventors: Rainer Kunz, Götz Kullik, Dieter Engel, Thomas Leyer
  • Patent number: 6725860
    Abstract: A monitoring process for the reliable metering of different gaseous anesthetics uses a gaseous anesthetic monitor designed as only a single-channel monitor for determining the concentration of only one gaseous anesthetic. The process also uses an associated gaseous anesthetic metering means.
    Type: Grant
    Filed: February 7, 2001
    Date of Patent: April 27, 2004
    Assignee: Dräger Medizintechnik GmbH
    Inventors: Carl F. Wallroth, Frank Gottschalk, Ernst-Günter Scharmer, Helmut Thiemann
  • Patent number: 6691705
    Abstract: An arrangement with a control circuit for controlling a numerical value for patient respiration as well as to a process for controlling the numerical value. The numerical value is controlled on the basis of an evaluation of the EEG (electroencephalogram) of the patient (1) by an EEG sensor (2), e.g., by determining the so-called BIS (bispectral index). A control of the inspiratory gaseous anesthetic concentrations is cascaded to the control of the EEG value in the manner of a cascade circuit. This has the advantage that a metering device (6) belonging to the arrangement meters a gaseous anesthetic mixture directly according to the patient's needs. As an alternative, the control of the numerical value is performed on the basis of an evaluation of the expiratory gaseous anesthetic concentrations resolved for individual breaths at the Y-piece (19) of the respiration circuit (12) by a gaseous anesthetic sensor (8a), preferably an infrared optical gas sensor.
    Type: Grant
    Filed: March 22, 2001
    Date of Patent: February 17, 2004
    Assignee: Dräger Medizintechnik GmbH
    Inventors: Ralf Dittmann, Swen Grünitz-Post, Steffen Leonhardt, Andrea Gentilini, Adolph Glattfelder, Manfred Morari, Thomas Schnider, Alexander M Zbinden
  • Patent number: 6679259
    Abstract: A process and system are provided for controlling a respirator with a breathing circuit (2), an inspiration branch (10) and an expiration branch (12), in which the gas components needed for the respiration are fed in by a fresh gas metering device (20) via a fresh gas line (9), as a result of which at least the amount of breathing gas consumed can be replenished. A breathing gas delivery unit (1) is provided in the inspiration branch (10) and with a volume flow sensor (13) in the expiration branch (12). The fresh gas utilization of the respirator is improved and the process and system reduces the resistances in the breathing circuit (2) for the patient (3) by the breathing gas delivery unit (1) being returned during the phase of expiration at a speed that depends on the volume flow that is measured by the volume flow sensor (13).
    Type: Grant
    Filed: August 8, 2001
    Date of Patent: January 20, 2004
    Assignee: Dräger Medizintechnik GmbH
    Inventor: Ralf Heesch
  • Patent number: 6651657
    Abstract: A respirator for supplying a patient with breathing is provided such that the respiration will not be compromised at the time of a changeover from one form of respiration to another form of respiration. Provisions are made for carrying out a first form of respiration with the corresponding first setting parameters and for taking over the corresponding setting parameters at least partially from the measured values determined during the first form of respiration and the first respiration parameters that remained invariant at the time of the changeover of the forms of respiration at the time of a changeover to a second form of respiration.
    Type: Grant
    Filed: April 18, 2000
    Date of Patent: November 25, 2003
    Assignee: Dräger Medizintechnik GmbH
    Inventors: Jürgen Manigel, Thomas Simmerer
  • Patent number: 6553990
    Abstract: A process, system and apparatus for changing the concentration in an anesthesia apparatus with a fresh gas metering unit (14) and a pressure sensor (17) in the breathing circuit, with a volume displacement device (1) in the inspiration branch and a PEEP/PMAX valve (7) in the expiration branch. The fresh gas metering unit (14), the pressure sensor (17), the volume displacement unit (1) and the PEEP/PMAX valve (7) are connected to an evaluating and control unit (15). To bring about a rapid change in the concentration of the anesthetic or fresh gas supplied in the breathing circuit without additional design effort on the anesthesia apparatus the volume displacement device (1) is rinsed, either under the control of the fresh gas supply or under the control of the speed at which the volume displacement device (1) is returned. The rinsing takes place simultaneously with the regular respiration operation of the anesthesia apparatus, which may take place in a volume-controlled or pressure-controlled manner.
    Type: Grant
    Filed: May 29, 2001
    Date of Patent: April 29, 2003
    Assignee: Dräger Medizintechnik GmbH
    Inventor: Karsten Hoffmann
  • Patent number: 6554471
    Abstract: A thermotherapy apparatus has a reclining surface (3) and an X-ray drawer (6) that can be retracted from the apparatus together when needed. A carrier (12) is located at the X-ray drawer (6) and can be connected to the reclining surface (3) in a preferred position.
    Type: Grant
    Filed: May 7, 2001
    Date of Patent: April 29, 2003
    Assignee: Dräger Medizintechnik GmbH
    Inventors: Petra Aval, Thomas Bohnen, Michael Geier, Ralf Graute, Hans-Joachim Kannengiesser, Edeltraud Meyer, Karsten Scharnweber
  • Patent number: 6544191
    Abstract: A process is provided for determining the functional residual capacity (FRC) of the lungs during respiration. An environmentally friendly trace gas is used in a process and system for determining the FRC by using fluoropropanes as a trace gas. Values for the FRC can thus be calculated, resolved for individual breaths, from the expiratory trace gas concentration and the expired breathing gas volume and they can be used for determining the FRC depending on their convergence behavior.
    Type: Grant
    Filed: July 11, 2001
    Date of Patent: April 8, 2003
    Assignee: Dräger Medizintechnik GmbH
    Inventors: Jochim Koch, Dieter Weismann, Georg Ankerhold, Horst-Dieter Hattendorff
  • Patent number: 6520180
    Abstract: A device with a gas sensor for measuring a breathing gas component in a breathing gas line is improved such that a pressure correction of the gas concentration measurement can be performed without appreciably affecting the respiration pressure. Provisions are made for branching off a first measuring gas line (23) with a first electrochemical measuring cell (28) from the breathing gas line (7). A first throttling point (26) is arranged in the course of the first measuring gas line (23) between the first electrochemical measuring cell (28) and the breathing gas line (7). A first pressure sensor (29), for the pressure correction, is located downstream of the first electrochemical measuring cell (28).
    Type: Grant
    Filed: November 16, 2000
    Date of Patent: February 18, 2003
    Assignee: Dräger Medizintechnik GmbH
    Inventors: Dieter Sahmkow, Tillmann von Blumenthal, Bernhard Ludwig, Dirk Fiebelkorn, Hendrik Hantzko
  • Patent number: 6513195
    Abstract: A hinge is provided at an edge of a container and a cover of the container. The hinge is designed such that the edge of the container can be both lifted off from the edge of the container and folded away. The pivoting movement of a second member (4) is limited by two stop positions I and II, of which the stop position I defines a stable position of the cover of the container on the edge of the container, fixed by the inner part (8) and the outer part (9). The closed container can be opened from the stop position I by lifting off the cover of the container, and the other stop position II defines a stable position of the cover of the container folded away from the edge of the container with the container opened, likewise fixed by the inner part (8) and the outer part (9).
    Type: Grant
    Filed: May 7, 2001
    Date of Patent: February 4, 2003
    Assignee: Dräger Medizintechnik GmbH
    Inventors: Thomas Haase, Helmut Holtmann, Axel Mummert, Katja Nicke, Ute Ollmann, Siegfried Preiniger, Wolfgang Specht
  • Patent number: 6474960
    Abstract: A radial compressor is provided for respiration purposes. The sound emissions generated by deflections and separations of the gas flow in the compressor wheel and the housing of the radial compressor and by the high-speed motor of the radial compressor are reduced. This is achieved with a specially shaped passage channel (4) for the volume flow, which exerts a stabilizing effect on the volume flow utilizing the Bernoulli principle of flow. Additional sound reduction is provided by using a separate mass (8) arranged between the motor (6) and the housing (3), which absorbs the sound energy generated by the high-speed motor (6). Also sound reduction is provided by suspending the radial compressor with membranes in a closed capsule.
    Type: Grant
    Filed: August 30, 2000
    Date of Patent: November 5, 2002
    Assignee: Dräger Medizintechnik GmbH
    Inventor: Hans-Ulrich Hansmann
  • Patent number: 6443885
    Abstract: A process for operating an incubator particularly suitable for a certain type of care (“kangaroo care”) is disclosed. The process is activated by device of an input element at a time t0. A measuring and control unit controls the heating device as a function of the temperature measured by the temperature sensor, of which there is at least one, in the interior space of the incubator such that the temperature measured in the interior space of the incubator during a preceding time period t0-t1 is used as the set point for the temperature in the interior space of the incubator. The skin temperature of the patient, which is determined by the second temperature sensor is compared with preset upper and/or lower temperature limit values for the skin temperature and an alarm is triggered by the measuring and control unit when these limit values are overshoot and/or undershot.
    Type: Grant
    Filed: August 16, 2000
    Date of Patent: September 3, 2002
    Assignee: Dräger Medizintechnik GmbH
    Inventor: Hans Ulrich Schüler
  • Patent number: 6422237
    Abstract: An improved respirator with a breathing circuit (100) and a corresponding process for operating the respirator are provided. Defined breathing gas volumes can be delivered to the patient and the current operating state can be reliably monitored despite a strong breathing gas volume flow being delivered in the breathing circuit (100). A gas delivery element (1) designed as a rotary compressor is connected on the inlet side to a reversible breathing gas reservoir (7) and on the outlet side to a patient connection piece (9) for inspiration via a first gas volume flow sensor (2) with a first nonreturn valve (11). A second gas volume flow sensor (5) is located in the connection line between the patient connection piece (9) and the patient being inspirated. The patient connection piece (9) is connected for expiration to a second nonreturn valve (10) via a third gas volume flow sensor (3) and to the reversible breathing gas reservoir (7) via a controllable shut-off valve (4).
    Type: Grant
    Filed: December 27, 1999
    Date of Patent: July 23, 2002
    Assignee: Dräger Medizintechnik GmbH
    Inventors: Dieter Engel, Jürgen Manigel, Claus Bunke, Matthias Witt
  • Patent number: 6418927
    Abstract: An improved rotary compressor (1) for respiration systems with breathing gases transported in a closed system. This rotary compressor (1), which can be washed and sterilized, is has an electrically driven compressor wheel (5) mounted by means of an aerodynamic gas slide bearing. The gas slide bearing comprises radially and axially loaded surfaces, wherein either the axially loaded surface (10) of the compressor wheel (5) or the axially loaded, nonmoving housing surface (11) has grooves (22).
    Type: Grant
    Filed: July 14, 1999
    Date of Patent: July 16, 2002
    Assignee: Dräger Medizintechnik GmbH
    Inventor: Götz Kullik
  • Patent number: 6409653
    Abstract: A treatment unit with at least two heat sources and a lying surface (4) for a patient (2) is provided such that the ratio of the heat outputs of the heat sources in relation to one another can be set in a simple manner. A heater (5) with a first temperature control circuit (9) for setting a predetermined temperature on or in the environment of the patient (2) is provided along with a heater (3) at the lying surface (4). A second temperature control circuit (12) is provided for the lying surface heater (3). A logic circuit (15) is operatively connected between the first temperature control circuit (9) and the second temperature control circuit (12), which receives the temperature actual value or the temperature set point of the first control circuit (9) as a command variable and sends a tracking value as a lying surface temperature set point to the second temperature control circuit (12) via a temperature logic function (17).
    Type: Grant
    Filed: May 1, 2000
    Date of Patent: June 25, 2002
    Assignee: Dräger Medizintechnik GmbH
    Inventors: Jochim Koch, Hans Ulrich Schüler, Wolf Dieter Schmidt
  • Patent number: 6378517
    Abstract: A coupling between a breathing tube system is provided with an inner tube and an outer tube. A first connection part is provided with a first connection piece for the outer tube and with a first connection for the inner tube. The first connection is arranged eccentrically in the first connection piece. A second connection part is provided with a second connection piece, which is in flow connection with the first connection piece. The second connection part provides a second connection, which is arranged concentrically in the second connection piece and which is connected to the first connection in terms of flow.
    Type: Grant
    Filed: May 18, 2000
    Date of Patent: April 30, 2002
    Assignee: Dräger Medizintechnik GmbH
    Inventor: Hans-Wilhelm Steen
  • Patent number: 6352504
    Abstract: A device is provided for monitoring patients, which is used to detect and process physiological data of a patient, which are measured by sensors. To make possible the most flexible use possible in patient monitoring, especially the connection of additional special sensors (2) and to ensure simple handling of the device even in the case of transportation, the patient monitoring device has a transportable terminal (8), which has connections (18) for connection to sensors (2) for measuring physiological parameters of the patient and signal processing devices (31, 23, 24, 25) for receiving and processing the sensor signals received, and is provided with a network adapter (26) for forwarding the processed sensor data to a stationary medical workplace (14) with display and alarm devices, as well as one or more expansion modules (9) for the connection of additional desired sensors (2).
    Type: Grant
    Filed: October 8, 1999
    Date of Patent: March 5, 2002
    Assignee: Dräger Medizintechnik GmbH
    Inventors: Edgar Ise, Rob Spapens, Christoph Landowski, Markus Rechlin
  • Patent number: 6346552
    Abstract: A breathing gas mixture is provided for the treatment of lung diseases, containing an amount of perfluorocarbon and oxygen containing 5 vol. % to 40 vol. % of perfluorocarbon relative to the amount of perfluorocarbon and oxygen. The amount of perfluorocarbon and oxygen in the breathing gas mixture ranges from about 20 vol. % to a maximum of 100 vol. % of the breathing gas mixture, and the remaining amount of up to about 80 vol. % contains one or more of the gases nitrogen, nitrogen monoxide and/or one or more anesthesia gases or noble gases, especially xenon. Perfluorohexane is an especially preferred perfluorocarbon.
    Type: Grant
    Filed: May 26, 1999
    Date of Patent: February 12, 2002
    Assignee: Dräger Medizintechnik GmbH
    Inventor: Detlev Michael Albrecht
  • Patent number: 6343601
    Abstract: A mobile medical supply device with a supply apparatus, especially an anesthesia apparatus, with a plurality of supply and drain lines. To make simple handling possible in connection with the moving along of the supply and drain lines during the movement of the supply apparatus (12) and to make it at the same time possible to install the entire device simply and inexpensively, the supply apparatus (12) can be moved on rollers (14) and a ceiling fixture (2) with a rotatably suspended multilink arm (4) is provided, which arm carries a frame (8) at its end away from the axis of rotation of the ceiling fixture (2), so that the frame (8) is movable due to the rotation of the multilink arm (4) and the pivoting of the links (5, 6) of the arm in relation to one another.
    Type: Grant
    Filed: February 15, 2000
    Date of Patent: February 5, 2002
    Assignee: Dräger Medizintechnik GmbH
    Inventors: Siegfried Kiske, Hans-Karsten Reimers