Patents by Inventor Ola Stenqvist

Ola Stenqvist 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).

  • Publication number: 20180140793
    Abstract: A system including a breathing apparatus and a processor is configured to raise a first positive end-expiratory pressure PEEP level to at least a second PEEP level above said first PEEP level and subsequently lowering said second PEEP level to said first PEEP level and to calculate a lung mechanics equation relating total lung volume above functional residual capacity (FRC) to transpulmonary pressure (PTP) of a lung connected to said breathing apparatus, based on a change in end-expiratory lung volume (DEELV) between said first PEEP level and said second PEEP level.
    Type: Application
    Filed: May 25, 2016
    Publication date: May 24, 2018
    Inventors: Ola Stenqvist, Stefan Lundin
  • Patent number: 9872632
    Abstract: An electric impedance tomography device with chest electrodes, a display and a control and analyzing unit to determine a time series of a global ventilation curve from the sequence of reconstructed matrices as a time series of the mean impedance change or of a measured respiration volume, to divide an inspiration or expiration phase into a number of steps of equal volume change, to determine the times corresponding to these steps, to determine the change in local impedance between these times for each image element, the ratio of this local change in impedance to the global ventilation curve to form a local sequence of relative impedance changes of the image element as a function of the steps of equal volume change, to determine a scalar indicator characteristic as a function of the steps of equal volume change and to display each image element based on the respective scalar indicator.
    Type: Grant
    Filed: February 4, 2014
    Date of Patent: January 23, 2018
    Assignee: Draegerwerk AG & Co. KGaA
    Inventors: Yvo Gärber, Ola Stenqvist
  • Publication number: 20170332943
    Abstract: A breathing apparatus (1) is disclosed that is adapted to determine a transpulmonary pressure in a patient (125) when connected to said breathing apparatus. A control unit (105) is operable to set a first mode of operation for ventilating said patient with a first Positive End Expiratory Pressure (PEEP) level; set a second mode of operation for ventilating said patient with a second PEEP level starting from said first PEEP level; and determine said transpulmonary pressure (Ptp) based on a change in end-expiratory lung volume (?EELV) and a difference between said first PEEP level and said second PEEP level (?PEEP). Furthermore, a method and computer program are disclosed.
    Type: Application
    Filed: May 1, 2017
    Publication date: November 23, 2017
    Inventor: Ola Stenqvist
  • Patent number: 9655544
    Abstract: A breathing apparatus (1) is disclosed that is adapted to determine a transpulmonary pressure in a patient (125) when connected to said breathing apparatus. A control unit (105) is operable to set a first mode of operation for ventilating said patient with a first Positive End Expiratory Pressure (PEEP) level; set a second mode of operation for ventilating said patient with a second PEEP level starting from said first PEEP level; and determine said transpulmonary pressure (Ptp) based on a change in end-expiratory lung volume (?EELV) and a difference between said first PEEP level and said second PEEP level (?PEEP). Furthermore, a method and computer program are disclosed.
    Type: Grant
    Filed: April 1, 2014
    Date of Patent: May 23, 2017
    Assignee: The Lung Barometry Sweden AB
    Inventor: Ola Stenqvist
  • Publication number: 20140221865
    Abstract: An electric impedance tomography device with chest electrodes, a display and a control and analyzing unit to determine a time series of a global ventilation curve from the sequence of reconstructed matrices as a time series of the mean impedance change or of a measured respiration volume, to divide an inspiration or expiration phase into a number of steps of equal volume change, to determine the times corresponding to these steps, to determine the change in local impedance between these times for each image element, the ratio of this local change in impedance to the global equal volume change to form a local sequence of relative impedance changes of the image element as a function of the steps of equal volume change, to determine a scalar indicator characteristic as a function of the steps of equal volume change and to display each image element based on the respective scalar indicator.
    Type: Application
    Filed: February 4, 2014
    Publication date: August 7, 2014
    Applicant: Dräger Medical GmbH
    Inventors: Yvo GÄRBER, Ola STENQVIST
  • Patent number: 8701663
    Abstract: A breathing apparatus (1) is disclosed that is adapted to determine a transpulmonary pressure in a patient (125) when connected to said breathing apparatus. A control unit (105) is operable to set a first mode of operation for ventilating said patient with a first Positive End Expiratory Pressure (PEEP) level; set a second mode of operation for ventilating said patient with a second PEEP level starting from said first PEEP level; and determine said transpulmonary pressure (Ptp) based on a change in end-expiratory lung volume (?EELV) and a difference between said first PEEP level and said second PEEP level (?PEEP). Furthermore, a method and computer program are disclosed.
    Type: Grant
    Filed: June 20, 2011
    Date of Patent: April 22, 2014
    Assignee: The Lung Barometry Sweden AB
    Inventor: Ola Stenqvist
  • Publication number: 20130174846
    Abstract: A breathing apparatus (1) is disclosed that is adapted to determine a transpulmonary pressure in a patient (125) when connected to said breathing apparatus. A control unit (105) is operable to set a first mode of operation for ventilating said patient with a first Positive End Expiratory Pressure (PEEP) level; set a second mode of operation for ventilating said patient with a second PEEP level starting from said first PEEP level; and determine said transpulmonary pressure (Ptp) based on a change in end-expiratory lung volume (?EELV) and a difference between said first PEEP level and said second PEEP level (?PEEP). Furthermore, a method and computer program are disclosed.
    Type: Application
    Filed: June 20, 2011
    Publication date: July 11, 2013
    Applicant: THE LUNG BAROMETRY SWEDEN AB C/O STENQVIST
    Inventor: Ola Stenqvist
  • Patent number: 8321007
    Abstract: An apparatus for determining functional lung characteristics of a patient includes an electrical impedance tomography (EIT) imaging device adapted to record the impedance distribution within a plane of the thorax of the patient. The EIT imaging device includes a control and analysis unit for performing the impedance measurement and deriving the impedance distribution within the plane of the thorax.
    Type: Grant
    Filed: February 9, 2010
    Date of Patent: November 27, 2012
    Assignee: Dräger Medical GmbH
    Inventors: Eckhard Teschner, Ola Stenqvist
  • Publication number: 20100228143
    Abstract: An apparatus for determining functional lung characteristics of a patient includes an electrical impedance tomography (EIT) imaging device adapted to record the impedance distribution within a plane of the thorax of the patient. The EIT imaging device includes a control and analysis unit for performing the impedance measurement and deriving the impedance distribution within the plane of the thorax.
    Type: Application
    Filed: February 9, 2010
    Publication date: September 9, 2010
    Applicant: DRAGER MEDICAL AG & CO. KG
    Inventors: Eckhard TESCHNER, Ola STENQVIST
  • Patent number: 7465275
    Abstract: The present invention relates to a method and an apparatus for measuring Functional Residual Capacity (CO). Further, it relates to a method and an apparatus for measuring cardiac output (CO). The method comprises the steps of determining the amount of oxygen and carbon dioxide being inhaled and exhaled during at least two breathing cycles, identifying at least one difference between said breathing cycles, and estimating the FRC and/or CO based on the determined uptake of oxygen and excretion of carbon dioxide and said identified difference.
    Type: Grant
    Filed: May 29, 2002
    Date of Patent: December 16, 2008
    Assignee: GE Healthcare Finland Oy
    Inventor: Ola Stenqvist
  • Publication number: 20040249301
    Abstract: The present invention relates to a method and an apparatus for measuring Functional Residual Capacity (FRC). Further, it relates to a method and an apparatus for measuring cardiac output (CO). The method comprises the steps of determining the amount of oxygen and carbon dioxide being inhaled and exhaled during at least two beginning cycles, identifying at least one difference between said breathing cycles, and estimating the FRC and/or CO based on the determined uptake of oxygen and excretion of carbon dioxide and said identified difference.
    Type: Application
    Filed: July 22, 2004
    Publication date: December 9, 2004
    Inventor: Ola Stenqvist
  • Patent number: 6315739
    Abstract: An apparatus and method for determining the intratracheal pressure of a patient intubated with an endotracheal tube. An infusion conduit has a first end at the proximal end of the endotracheal tube and a second end proximate to the distal end of the endotracheal tube. The first end of the infusion conduit is connectable to a pressure sensing unit. A fluid source flows a gaseous or liquid fluid through the infusion conduit to maintain the patency of the infusion conduit from the first end to the second end and to allow the pressure obtained at the second end of the infusion conduit to be used to determine the intratracheal pressure of the subject.
    Type: Grant
    Filed: September 27, 1999
    Date of Patent: November 13, 2001
    Assignee: Instrumentarium Corporation
    Inventors: Pekka Merilainen, Ola Stenqvist