Patents by Inventor Ralf Heesch

Ralf Heesch has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 10821244
    Abstract: A medical measuring device (2), as well as to a ventilator (1), as well as to a method for operating a medical measuring device (2) or a ventilator are provided. The medical measuring device (1) includes a sensor system (14) and measuring, signal processing and calculating device (21), to detect an inspiratory measured variable, which represents an indicator for the transport of breathing gases into the lungs of a patient (80), and an expiratory measured variable, which represents an indicator for the transport of breathing gases out of the lungs of a patient (80), and to determine an indicator for a ventilation-related shifting of secretion from the expiratory measured variable and the inspiratory measured variable.
    Type: Grant
    Filed: July 7, 2014
    Date of Patent: November 3, 2020
    Assignee: Drägerwerk AG & Co. KGaA
    Inventors: Ralf Heesch, Andreas Brandt
  • Patent number: 10821256
    Abstract: A method and device, for enriching a gas flow with an anesthetic, include a gas mixer (1), with gas inlets (2a, 2b) and one or more gas outlets (3a, 3b), and an anesthetic dispenser (4) connected to the one or more gas outlets. The anesthetic dispenser at least partially enriches the gas flow to provide a breathing gas flow enriched with anesthetic at a patient connector (5). A control valve (7a) is arranged fluidically in series with the anesthetic dispenser (4). The gas outlet is connected to the patient connector (5) via a gas channel (8), arranged fluidically parallel to the anesthetic dispenser (4) and in which at least another control valve (7b) is arranged. A control unit (6) actuates at least one control valve as a function of a desired value for an anesthetic concentration in the breathing gas flow to change anesthetic concentration at the patient connector (5).
    Type: Grant
    Filed: February 7, 2017
    Date of Patent: November 3, 2020
    Assignee: Drägerwerk AG & Co. KGaA
    Inventors: Jürgen Manigel, Uwe Bartels, Ralf Heesch, Norbert Wruck, Klaus Radomski, Ulf Pilz
  • Patent number: 10714871
    Abstract: A medical device, for example, an anesthesia apparatus or ventilator, including a hot wire sensor (10); a hot wire sensor (10) and a hot wire module (14) for a hot wire sensor (10) are provided. A first hot wire and a second hot wire (26, 28), namely, a measuring wire (26) and a compensation wire (28), are connectable to the hot wire sensor (10), for example, in the form of a hot wire module (14), in an electrically conductive manner. A first contact pair (52, 54) is associated with the measuring wire (26) for contacting same and a second contact pair (56, 58) is associated with the compensation wire (28) for contacting same. The contacts of the second contact pair (56, 58) are configured as leading contacts in relation to at least one of the contacts of the first contact pair (52, 54).
    Type: Grant
    Filed: September 19, 2017
    Date of Patent: July 14, 2020
    Assignee: DRÄGERWERK AG & CO. KGAA
    Inventors: Ralf Heesch, Bernd Kellner, Henning Gerder, Thomas Reßing, Andreas Timmann
  • Patent number: 10702668
    Abstract: A ventilator or anesthesia device and method create a reference state and record a measured value as a reference value. A gas delivery unit is activated after the ending of the reference state to build up pressure in a breathing circuit. A comparison measured value is determined with a pressure or flow sensor. A deviation of the measured value from the reference value in relation to a predefined or predefinable expected value is monitored based on the comparison. A warning message is issued depending on a result of the comparison. A drop in pressure in the breathing circuit is caused after the recording of the comparison measured value and a further comparison measured value is recorded following the drop in pressure. A deviation of the further comparison measured value from the reference value leads to a further warning message when the deviation does not correspond to the further expected value.
    Type: Grant
    Filed: May 19, 2016
    Date of Patent: July 7, 2020
    Assignee: DRÄGERWERK AG & CO. KGAA
    Inventors: Ralf Heesch, Robert Schmid, Jonas Börner
  • Patent number: 10661042
    Abstract: An apparatus for supplying breathing air to a person includes a rebreathing system arranged in the air supply circuit, which removes CO2 at least in part present in the person's expiration air with a CO2 absorber, and treats the expiration air to supply treated air to the person again as inhalation air. The apparatus includes a condensate collection container (9) collecting water forming in the air supply circuit. The condensate collection container (9) is arranged at least in part below a reaction zone (17) of the CO2 absorber (1). At least one heat exchanger (10, 14) is provided in the CO2 absorber, via which heat from the air, which flows through the CO2 absorber and is heated as a result of the exothermic CO2 absorption reaction occurring in the reaction zone of the CO2 absorber, is dissipated.
    Type: Grant
    Filed: November 17, 2015
    Date of Patent: May 26, 2020
    Assignee: DRÄGERWERK AG & CO. KGAA
    Inventor: Ralf Heesch
  • Patent number: 10478575
    Abstract: A method and a control program for operating an anesthesia apparatus, as well as an anesthesia apparatus (12), which operates according to the method are provided. The anesthesia apparatus includes a breathing gas feed unit (22) intended for displacing a breathing gas volume in a breathing circuit (10). A piston (23) brings about the displacement of the breathing gas. Switching over between a first mode of operation and a second mode of operation during the return of the piston (23) allows for a presetting of a corresponding piston return velocity. The piston return velocity depends on a volume flow in an exhalation branch (34) of the breathing circuit (10) in the first mode of operation. The piston return velocity depends on a minimally necessary piston return velocity in the second mode of operation.
    Type: Grant
    Filed: December 22, 2016
    Date of Patent: November 19, 2019
    Assignee: Draägerwerk AG & Co. KGaA
    Inventors: Ralf Heesch, Robert Schmid, Jonas Börner
  • Patent number: 10456549
    Abstract: A respiration system with a respirator (2) and with a breathing system (1), which is detachably coupled with the respirator. The coupling between the respirator and the breathing system takes place by at least two connector systems (3). The coupling between the respirator and the breathing system is designed such that the volume flow through the connector systems always takes place in only one direction. A pressure sensor (9; 9?) is preferably combined with at least one of the connector systems (3) such that a unidirectional volume flow, by which the direction of migration of bacteria through the connector system is influenced in the desired manner, becomes established within this connector system (3), as a result of which the connector system and the coupled sensor are kept free from bacteria, viruses and other contaminants.
    Type: Grant
    Filed: February 7, 2013
    Date of Patent: October 29, 2019
    Assignee: Drägerwerk AG & Co. KGaA
    Inventors: Ralf Heesch, Ahmet Türker
  • Patent number: 10279133
    Abstract: The function of a respiration system, with a patient port (1) with connected inspiration branch (3) and expiration branch, is checked. A rebreathing line (9) connects the inspiration branch to the expiration branch. A reservoir (25) is connected to a reservoir port (27) in the rebreathing line. An actuatable control valve (29) is provided in the rebreathing line between the expiration branch and the reservoir port. A pressure sensor (33) is connected to the rebreathing line. A control unit (39) is connected to the control valve and to pressure sensor. The process includes closing the control valve for a preset inspiration time and opening it for a preset expiration time. The value sent by the pressure sensor is detected with the control valve opened during the expiration time and compared with a preset first threshold valve. An error message is generated when the value sent exceeds the first threshold value.
    Type: Grant
    Filed: November 3, 2015
    Date of Patent: May 7, 2019
    Assignee: Drägerwerk AG & Co. KGaA
    Inventors: Ralf Heesch, Till Rahlf
  • Publication number: 20180221606
    Abstract: A ventilation drive (10) for an anesthesia device and a method for operating such a ventilation drive (10) are provided. The ventilation drive includes a blower unit (12), a pressure chamber (14) and a flexible bag (16) located in the pressure chamber (14). An internal volume of the bag (16) is coupled to an inspiratory branch (20) of a ventilation line. The blower unit (12) can be coupled to the internal volume of an outlet side and to an air inlet (26) for feeding ambient air on an inlet side. Further, a flow sensor (36) is provided between the outlet side of the blower unit (12) and the pressure chamber (14).
    Type: Application
    Filed: August 4, 2016
    Publication date: August 9, 2018
    Inventors: Andreas BRANDT, Ralf HEESCH, Marina WAHL
  • Publication number: 20180080806
    Abstract: A medical device, for example, an anesthesia apparatus or ventilator, including a hot wire sensor (10); a hot wire sensor (10) and a hot wire module (14) for a hot wire sensor (10) are provided. A first hot wire and a second hot wire (26, 28), namely, a measuring wire (26) and a compensation wire (28), are connectable to the hot wire sensor (10), for example, in the form of a hot wire module (14), in an electrically conductive manner. A first contact pair (52, 54) is associated with the measuring wire (26) for contacting same and a second contact pair (56, 58) is associated with the compensation wire (28) for contacting same. The contacts of the second contact pair (56, 58) are configured as leading contacts in relation to at least one of the contacts of the first contact pair (52, 54).
    Type: Application
    Filed: September 19, 2017
    Publication date: March 22, 2018
    Inventors: Ralf HEESCH, Bernd KELLNER, Henning GERDER, Thomas REßING, Andreas TIMMANN
  • Patent number: 9770569
    Abstract: A method for measuring the anesthetic agent consumption in a ventilation system has a breathing circuit which contains a gas mixer (1) and an anesthetic agent metering device (2). The anesthetic agent quantity, which is consumed over a pregiven time interval in the ventilation system, is determined from the sum of the determined anesthetic gas volume flows in the ventilation system which are integrated over the pregiven time interval.
    Type: Grant
    Filed: May 31, 2007
    Date of Patent: September 26, 2017
    Assignee: DRÄGERWERK AG & CO. KGAA
    Inventor: Ralf Heesch
  • Publication number: 20170266407
    Abstract: An apparatus for supplying breathing air to a person includes a rebreathing system arranged in the air supply circuit, which removes CO2 at least in part present in the person's expiration air with a CO2 absorber, and treats the expiration air to supply treated air to the person again as inhalation air. The apparatus includes a condensate collection container (9) collecting water forming in the air supply circuit. The condensate collection container (9) is arranged at least in part below a reaction zone (17) of the CO2 absorber (1). At least one heat exchanger (10, 14) is provided in the CO2 absorber, via which heat from the air, which flows through the CO2 absorber and is heated as a result of the exothermic CO2 absorption reaction occurring in the reaction zone of the CO2 absorber, is dissipated.
    Type: Application
    Filed: November 17, 2015
    Publication date: September 21, 2017
    Inventor: Ralf HEESCH
  • Publication number: 20170224947
    Abstract: A method and device, for enriching a gas flow with an anesthetic, include a gas mixer (1), with gas inlets (2a, 2b) and one or more gas outlets (3a, 3b), and an anesthetic dispenser (4) connected to the one or more gas outlets. The anesthetic dispenser at least partially enriches the gas flow to provide a breathing gas flow enriched with anesthetic at a patient connector (5). A control valve (7a) is arranged fluidically in series with the anesthetic dispenser (4). The gas outlet is connected to the patient connector (5) via a gas channel (8), arranged fluidically parallel to the anesthetic dispenser (4) and in which at least another control valve (7b) is arranged. A control unit (6) actuates at least one control valve as a function of a desired value for an anesthetic concentration in the breathing gas flow to change anesthetic concentration at the patient connector (5).
    Type: Application
    Filed: February 7, 2017
    Publication date: August 10, 2017
    Inventors: Jürgen MANIGEL, Uwe BARTELS, Ralf HEESCH, Norbert WRUCK, Klaus RADOMSKI, Ulf PILZ
  • Publication number: 20170182271
    Abstract: A method and a control program for operating an anesthesia apparatus, as well as an anesthesia apparatus (12), which operates according to the method are provided. The anesthesia apparatus includes a breathing gas feed unit (22) intended for displacing a breathing gas volume in a breathing circuit (10). A piston (23) brings about the displacement of the breathing gas. Switching over between a first mode of operation and a second mode of operation during the return of the piston (23) allows for a presetting of a corresponding piston return velocity. The piston return velocity depends on a volume flow in an exhalation branch (34) of the breathing circuit (10) in the first mode of operation. The piston return velocity depends on a minimally necessary piston return velocity in the second mode of operation.
    Type: Application
    Filed: December 22, 2016
    Publication date: June 29, 2017
    Inventors: Ralf HEESCH, Robert SCHMID, Jonas BÖRNER
  • Patent number: 9555204
    Abstract: A method for controlling the end-expiratory pressure at a patient (30) in a respiratory system (50) of an anesthesia apparatus or respirator (30) includes regulating a pressure curve (401a, 401b, 501a, 501b) during the expiration phase (650) of the patient such that the pressure curve is described by an at least partially dropping curve (105a, 105b, 106a, 106b, 601, 602, 603, 604) from a first upper pressure value (613a, 613b, 613c, 613d) to a first lower pressure value (614a, 614b, 614c, 614d) from the end of the inspiration phase (660) until the beginning of the next, following inspiration phase (670). An anesthesia apparatus or respirator is provided that includes an operating and actuating unit that regulates a controllable expiratory valve and a respiration drive such that the pressure curve is described by an at least partially dropping curve.
    Type: Grant
    Filed: February 3, 2012
    Date of Patent: January 31, 2017
    Assignee: Drägerwerk AG & Co. KGaA
    Inventors: Till Rahlf, Ralf Heesch
  • Publication number: 20160346497
    Abstract: A ventilator or anesthesia device and method create a reference state and record a measured value as a reference value. A gas delivery unit is activated after the ending of the reference state to build up pressure in a breathing circuit. A comparison measured value is determined with a pressure or flow sensor. A deviation of the measured value from the reference value in relation to a predefined or predefinable expected value is monitored based on the comparison. A warning message is issued depending on a result of the comparison. A drop in pressure in the breathing circuit is caused after the recording of the comparison measured value and a further comparison measured value is recorded following the drop in pressure. A deviation of the further comparison measured value from the reference value leads to a further warning message when the deviation does not correspond to the further expected value.
    Type: Application
    Filed: May 19, 2016
    Publication date: December 1, 2016
    Inventors: Ralf HEESCH, Robert SCHMID, Jonas BÖRNER
  • Patent number: 9399104
    Abstract: A respiration system includes a patient connection (1), an inspiratory branch (3), an expiratory branch (13), a rebreathing line (99), a reservoir (25), a CO2 absorber (29), a radial compressor respiration drive (33), a fresh gas supply unit (51), an oxygen flushing device (55), connected to the rebreathing line, a pressure sensor (31) and an actuatable control valve (21), arranged in the rebreathing line between a second end (17) of the expiratory branch and the CO2 absorber. The compressor, oxygen flushing device and fresh gas supply unit are arranged in the rebreathing line between the CO2 absorber and a second end (7) of the inspiration branch. The compressor inlet points towards the CO2 absorber and the outlet points towards the second end of the inspiratory branch. The pressure sensor is arranged in the rebreathing line between the compressor and the second end of the inspiratory branch.
    Type: Grant
    Filed: June 13, 2012
    Date of Patent: July 26, 2016
    Assignee: Drägerwerk AG & Co. KGaA
    Inventor: Ralf Heesch
  • Patent number: 9393373
    Abstract: A process and system are provided for transmitting monitoring states between respirators. The process includes the detection of and recording of monitoring states of a monitoring unit (5) of at least a first monitoring period (10) of a first respirator (2). There is an assignment of an identification to the monitoring states of the monitoring unit (5) of the at least first monitoring period (10) of the first respirator (2). There is a transmission of the monitoring states of the monitoring unit (5) of the at least first monitoring period (10) of the first respirator (2) to a second respirator (3). This is followed by a setting of the monitoring unit (5) of the second respirator (3) corresponding to the transmitted monitoring states of the monitoring unit (5) of the at least first monitoring period (10) of the first respirator (2). This is then followed by a repetition of steps for the monitoring states of the monitoring unit (5) of each additional monitoring period (10) of the first respirator (2).
    Type: Grant
    Filed: July 16, 2008
    Date of Patent: July 19, 2016
    Assignee: Drëgerwerk AG & Co. KGaA.
    Inventors: Olaf Schermeier, Ralf Heesch, Jennifer Lünse, Robert Schmid
  • Publication number: 20160136370
    Abstract: A medical measuring device (2), as well as to a ventilator (1), as well as to a method for operating a medical measuring device (2) or a ventilator are provided. The medical measuring device (1) includes a sensor system (14) and measuring, signal processing and calculating device (21), to detect an inspiratory measured variable, which represents an indicator for the transport of breathing gases into the lungs of a patient (80), and an expiratory measured variable, which represents an indicator for the transport of breathing gases out of the lungs of a patient (80), and to determine an indicator for a ventilation-related shifting of secretion from the expiratory measured variable and the inspiratory measured variable.
    Type: Application
    Filed: July 7, 2014
    Publication date: May 19, 2016
    Applicant: DRÄGERWERK AG & CO. KGAA
    Inventors: Ralf HEESCH, Andreas BRANDT
  • Patent number: 9283347
    Abstract: A device (10) for dispensing oxygen for an anesthesia device includes a switching element (15) that diverts oxygen between a first gas path (153) and a second gas path (154). The first gas path (153) leads to a patient (27) via a connection and port element. The second gas path (154) leads to a gas tapping port (20) for oxygen or gas insufflation.
    Type: Grant
    Filed: June 22, 2012
    Date of Patent: March 15, 2016
    Assignee: DRÄGERWERK AG & CO. KGAA
    Inventor: Ralf Heesch