Patents by Inventor Dwayne Westenskow

Dwayne Westenskow 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: 8800561
    Abstract: Systems, methods, and apparatus for removing volatile anesthetics from an anesthesia or ventilation system to minimize the effects of malignant hyperthermia in susceptible patients. According to one aspect of the present invention, a system for removing volatile anesthetics is provided. A first filter component placed in fluid communication with an inspiratory limb of an anesthesia or ventilation system such that volatile anesthetics will pass through the first filter component during operation of the anesthesia or ventilation system. A second filter component is operably coupled to the expiration port of the anesthesia or ventilation system such that gases passing through the expiratory limb of the anesthesia or ventilation system pass through the second filter component. The first filter component and second filter component are adapted to effectively remove volatile anesthetics passing through the respective filters.
    Type: Grant
    Filed: August 31, 2012
    Date of Patent: August 12, 2014
    Inventors: Joseph Orr, Dwayne Westenskow, Derek Sakata
  • Patent number: 8485187
    Abstract: Systems, methods, and apparatus for removing volatile anesthetics from an anesthesia or ventilation system to minimize the effects of malignant hyperthermia in susceptible patients. According to one aspect of the present invention, a system for removing volatile anesthetics is provided. A first filter component placed in fluid communication with an inspiratory limb of an anesthesia or ventilation system such that volatile anesthetics will pass through the first filter component during operation of the anesthesia or ventilation system. A second filter component is operably coupled to the expiration port of the anesthesia or ventilation system such that gases passing through the expiratory limb of the anesthesia or ventilation system pass through the second filter component. The first filter component and second filter component are adapted to effectively remove volatile anesthetics passing through the respective filters.
    Type: Grant
    Filed: April 28, 2009
    Date of Patent: July 16, 2013
    Assignee: Dynasthetics, LLC
    Inventors: Joseph Orr, Dwayne Westenskow, Derek Sakata
  • Publication number: 20120325213
    Abstract: Systems, methods, and apparatus for removing volatile anesthetics from an anesthesia or ventilation system to minimize the effects of malignant hyperthermia in susceptible patients. According to one aspect of the present invention, a system for removing volatile anesthetics is provided. A first filter component placed in fluid communication with an inspiratory limb of an anesthesia or ventilation system such that volatile anesthetics will pass through the first filter component during operation of the anesthesia or ventilation system. A second filter component is operably coupled to the expiration port of the anesthesia or ventilation system such that gases passing through the expiratory limb of the anesthesia or ventilation system pass through the second filter component. The first filter component and second filter component are adapted to effectively remove volatile anesthetics passing through the respective filters.
    Type: Application
    Filed: August 31, 2012
    Publication date: December 27, 2012
    Inventors: Joseph Orr, Dwayne Westenskow, Derek Sakata
  • Patent number: 8096297
    Abstract: Apparatus and methods for non-invasively determining cardiac output using partial re-breathing techniques are disclosed in which the apparatus is constructed with an instantaneously adjustable deadspace for accommodating differences in breathing capacities of various patients. The apparatus is constructed of inexpensive elements, including a single two-way valve which renders the apparatus very simple to use and inexpensive so that the unit may be readily disposable. The method of the invention provides a novel means of estimating cardiac output based on alveolar CO2 values rather than end-tidal CO2 values as previously practiced. A program for calculating cardiac output is also disclosed.
    Type: Grant
    Filed: February 9, 2010
    Date of Patent: January 17, 2012
    Assignee: RIC Investments, LLC
    Inventors: Joseph A. Orr, Scott A. Kofoed, Dwayne Westenskow, Michael B. Jaffe
  • Publication number: 20100269828
    Abstract: Systems, methods, and apparatus for removing volatile anesthetics from an anesthesia or ventilation system to minimize the effects of malignant hyperthermia in susceptible patients. According to one aspect of the present invention, a system for removing volatile anesthetics is provided. A first filter component placed in fluid communication with an inspiratory limb of an anesthesia or ventilation system such that volatile anesthetics will pass through the first filter component during operation of the anesthesia or ventilation system. A second filter component is operably coupled to the expiration port of the anesthesia or ventilation system such that gases passing through the expiratory limb of the anesthesia or ventilation system pass through the second filter component. The first filter component and second filter component are adapted to effectively remove volatile anesthetics passing through the respective filters.
    Type: Application
    Filed: April 28, 2009
    Publication date: October 28, 2010
    Applicant: Axon Medical , Inc.
    Inventors: Joseph Orr, Dwayne Westenskow, Derek Sakata
  • Publication number: 20100132710
    Abstract: Apparatus and methods for non-invasively determining cardiac output using partial re-breathing techniques are disclosed in which the apparatus is constructed with an instantaneously adjustable deadspace for accommodating differences in breathing capacities of various patients. The apparatus is constructed of inexpensive elements, including a single two-way valve which renders the apparatus very simple to use and inexpensive so that the unit may be readily disposable. The method of the invention provides a novel means of estimating cardiac output based on alveolar CO2 values rather than end-tidal CO2 values as previously practiced. A program for calculating cardiac output is also disclosed.
    Type: Application
    Filed: February 9, 2010
    Publication date: June 3, 2010
    Applicant: RIC INVESTMENTS, LLC
    Inventors: JOSEPH A. ORR, SCOTT A. KOFOED, DWAYNE WESTENSKOW, MICHAEL B. JAFFE
  • Patent number: 7693697
    Abstract: A method, system and apparatus for the monitoring, diagnosis and evaluation of the state of a dynamic drug display system is disclosed. This invention provides for the rapid cognitive grasp of the overall state of drug combination effects with respect to a dynamic system. The system provides for displayed objects, which change in real-time to show the changes of the functions of the system. In particular, this invention is directed to the processing and display of drug data for the use of doctors in the process of monitoring or administering drugs to patients.
    Type: Grant
    Filed: October 11, 2002
    Date of Patent: April 6, 2010
    Assignee: University of Utah Research Foundation
    Inventors: Dwayne Westenskow, James Agutter, Noah Syroid, David Strayer, Robert Albert, Frank Drews
  • Patent number: 7686012
    Abstract: Apparatus and methods for non-invasively determining cardiac output using partial re-breathing techniques are disclosed in which the apparatus is constructed with an instantaneously adjustable deadspace for accommodating differences in breathing capacities of various patients. The apparatus is constructed of inexpensive elements, including a single two-way valve which renders the apparatus very simple to use and inexpensive so that the unit may be readily disposable. The method of the invention provides a novel means of estimating cardiac output based on alveolar CO2 values rather than end-tidal CO2 values as previously practiced. A program for calculating cardiac output is also disclosed.
    Type: Grant
    Filed: May 2, 2005
    Date of Patent: March 30, 2010
    Assignee: RIC Investments, LLC
    Inventors: Joseph A. Orr, Scott A. Kofoed, Dwayne Westenskow, Michael B. Jaffe
  • Publication number: 20080041385
    Abstract: An apparatus for reversing inhaled anesthesia, which is configured to be positioned along a breathing circuit or anesthesia delivery circuit, includes a filter for removing one or more anesthetic agents from gases passing therethrough, as well as a component for elevating CO2 levels in gases that are to be inhaled by an individual. The apparatus is configured to be positioned between a Y-connector of the breathing circuit and the portion of the breathing circuit that interfaces with the individual. The CO2 level-elevating component facilitates an increase in the ventilation of the individual without resulting in a significant decrease in the individual's PaCO2 level and, thus, a decrease in the rate at which blood flows through the individual's brain. A method of reversing the effects of inhaled anesthesia includes increasing the rate of ventilation of an anesthetized individual while causing the individual to inhale gases with elevated amounts of CO2 and while filtering anesthetic agents from such gases.
    Type: Application
    Filed: August 23, 2007
    Publication date: February 21, 2008
    Applicant: AXON MEDICAL, INC.
    Inventors: Joseph Orr, Derek Sakata, Dwayne Westenskow
  • Publication number: 20080033661
    Abstract: A method, system and apparatus for the monitoring, diagnosis and evaluation of the state of a dynamic system is disclosed. This method and system provides the processing means for receiving sensed and/or simulated data, converting such data into a displayable object format and displaying such objects in a manner such that the interrelationships between the respective variables can be correlated and identified by a user. This invention provides for the rapid cognitive grasp of the overall state of a critical function with respect to a dynamic system. The system provides for displayed objects, which change in real-time to show the changes of the functions of the system. It is a highly flexible system which works with a wide variety of applications, including biological systems, environmental systems, engineering systems, economic systems, mechanical systems, chemical systems and the like.
    Type: Application
    Filed: August 22, 2007
    Publication date: February 7, 2008
    Inventors: Noah Syroid, Dwayne Westenskow, Julio Bermudez, James Agutter, David Strayer, Robert Albert, Michael Holmes, Frank Drews, Haunke Prenzel
  • Publication number: 20060129054
    Abstract: Methods for non-invasively determining the cardiac output or pulmonary capillary blood flow of a subject include monitoring the subject's respiration during two ventilatory states. Such a method may include determining parameters of at least one of the ventilatory states based on one or more characteristics of the subject. Data obtained from monitoring the subject's respiration, such as an amount of gas present in exhaled gases and respiratiory flow, may be used to estimate respiratory or blood gas parameters, such as an amount of gas exchanged between blood and gases in the subject's lungs or an indicator of a content of the gas in the subject's blood.
    Type: Application
    Filed: February 3, 2006
    Publication date: June 15, 2006
    Inventors: Joseph Orr, Michael Jaffe, Scott Kofoed, Dwayne Westenskow
  • Publication number: 20060111749
    Abstract: A basic life support system (BLSS) includes a processing element and an output element, such as a display screen or an audio output element, for providing an individual with real-time instructions on providing emergency medical care to a patient until paramedics or other healthcare professionals arrive to take over care for the patient. The instructions may be provided as graphics, including animations, as text, audibly, or as a combination of visible and audible elements. The BLSS may be configured for providing emergency medical care to individuals who have suffered from ventricular fibrillation. Accordingly, the BLSS may also include a defibrillation apparatus, an air or oxygen supply, a respiratory interface, one or more sensors, or a combination thereof.
    Type: Application
    Filed: June 20, 2005
    Publication date: May 25, 2006
    Inventors: Dwayne Westenskow, Joseph Orr, Noah Syroid, Daniel Snell, James Agutter, Frank Drews, Srinath Lingutta, Santosh Balakrishnan, Kai Kuck, Lara Brewer
  • Patent number: 7018340
    Abstract: Apparatus and methods for non-invasively determining the cardiac output or pulmonary capillary blood flow of a patient using partial re-breathing techniques. The apparatus includes a substantially instantaneously adjustable deadspace volume for accommodating differences in sizes or breathing capacities of various patients. The apparatus may be constructed of inexpensive elements, including one or more two-way valves, which render the apparatus very simple to use and inexpensive so that the unit may be employed as a disposable product. The method of the invention includes estimating the cardiac output or pulmonary capillary blood flow of a patient based on partial pressure of alveolar CO2, rather than on the partial pressure of end tidal CO2, as previously practiced. A computer program for calculating the cardiac output or pulmonary capillary blood flow of a patient is also disclosed.
    Type: Grant
    Filed: September 8, 2003
    Date of Patent: March 28, 2006
    Assignee: NTC Technology Inc.
    Inventors: Michael B. Jaffe, Joseph A. Orr, Scott A. Kofoed, Dwayne Westenskow
  • Publication number: 20050203432
    Abstract: Apparatus and methods for non-invasively determining cardiac output using partial re-breathing techniques are disclosed in which the apparatus is constructed with an instantaneously adjustable deadspace for accommodating differences in breathing capacities of various patients. The apparatus is constructed of inexpensive elements, including a single two-way valve which renders the apparatus very simple to use and inexpensive so that the unit may be readily disposable. The method of the invention provides a novel means of estimating cardiac output based on alveolar CO2 values rather than end-tidal CO2 values as previously practiced. A program for calculating cardiac output is also disclosed.
    Type: Application
    Filed: May 2, 2005
    Publication date: September 15, 2005
    Inventors: Joseph Orr, Scott Kofoed, Dwayne Westenskow, Michael Jaffe
  • Patent number: 6908438
    Abstract: Apparatus and methods for non-invasively determining cardiac output using partial re-breathing techniques are disclosed in which the apparatus is constructed with an instantaneously adjustable deadspace for accommodating differences in breathing capacities of various patients. The apparatus is constructed of inexpensive elements, including a single two-way valve which renders the apparatus very simple to use and inexpensive so that the unit may be readily disposable. The method of the invention provides a novel means of estimating cardiac output based on alveolar CO2 values rather than end-tidal CO2 values as previously practiced. A program for calculating cardiac output is also disclosed.
    Type: Grant
    Filed: September 8, 2003
    Date of Patent: June 21, 2005
    Assignee: Respironics Novametrix, Inc.
    Inventors: Joseph A. Orr, Scott A. Kofoed, Dwayne Westenskow, Michael B. Jaffe
  • Publication number: 20050010117
    Abstract: A method, system, apparatus and device for the monitoring, diagnosis and evaluation of the state of a dynamic system is disclosed. This method and system provides the processing means for receiving sensed and/or simulated data, converting such data into a displayable object format and displaying such objects in a manner such that the interrelationships between the respective variables can be correlated and identified by a user. This invention provides for the rapid cognitive grasp of the overall state of a critical function with respect to a dynamic system. The system provides for displayed objects, which change in real-time to show the changes of the functions of the system. It is a highly flexible system which works with a wide variety of applications, including biological systems, environmental systems, engineering systems, economic systems, mechanical systems, chemical systems and the like.
    Type: Application
    Filed: May 14, 2004
    Publication date: January 13, 2005
    Inventors: James Agutter, Noah Syroid, Julio Bermudez, Yinqi Zhang, Michael Holmes, Frank Drews, David Strayer, Robert Albert, Dwayne Westenskow
  • Publication number: 20040059239
    Abstract: Apparatus and methods for non-invasively determining the cardiac output or pulmonary capillary blood flow of a patient using partial re-breathing techniques. The apparatus includes a substantially instantaneously adjustable deadspace volume for accommodating differences in sizes or breathing capacities of various patients. The apparatus may be constructed of inexpensive elements, including one or more two-way valves, which render the apparatus very simple to use and inexpensive so that the unit may be employed as a disposable product. The method of the invention includes estimating the cardiac output or pulmonary capillary blood flow of a patient based on partial pressure of alveolar CO2, rather than on the partial pressure of end tidal CO2, as previously practiced. A computer program for calculating the cardiac output or pulmonary capillary blood flow of a patient is also disclosed.
    Type: Application
    Filed: September 8, 2003
    Publication date: March 25, 2004
    Inventors: Michael B. Jaffe, Joseph A. Orr, Scott A. Kofoed, Dwayne Westenskow
  • Publication number: 20040049113
    Abstract: Apparatus and methods for non-invasively determining cardiac output using partial re-breathing techniques are disclosed in which the apparatus is constructed with an instantaneously adjustable deadspace for accommodating differences in breathing capacities of various patients. The apparatus is constructed of inexpensive elements, including a single two-way valve which renders the apparatus very simple to use and inexpensive so that the unit may be readily disposable. The method of the invention provides a novel means of estimating cardiac output based on alveolar CO2 values rather than end-tidal CO2 values as previously practiced. A program for calculating cardiac output is also disclosed.
    Type: Application
    Filed: September 8, 2003
    Publication date: March 11, 2004
    Inventors: Joseph A. Orr, Scott A. Kofoed, Dwayne Westenskow, Michael B. Jaffe
  • Patent number: 6648831
    Abstract: Apparatus and methods for non-invasively determining cardiac output using partial re-breathing techniques are disclosed in which the apparatus is constructed with an instantaneously adjustable deadspace for accommodating differences in breathing capacities of various patients. The apparatus is constructed of inexpensive elements, including a single two-way valve which renders the apparatus very simple to use and inexpensive so that the unit may be readily disposable. The method of the invention provides a novel means of estimating cardiac output based on alveolar CO2 values rather than end-tidal CO2 values as previously practiced. A program for calculating cardiac output is also disclosed.
    Type: Grant
    Filed: January 23, 2001
    Date of Patent: November 18, 2003
    Assignee: Novametrix Medical Systems, Inc.
    Inventors: Joseph A. Orr, Scott A. Kofoed, Dwayne Westenskow, Michael B. Jaffe
  • Patent number: 6648832
    Abstract: Apparatus and methods for non-invasively determining the cardiac output or pulmonary capillary blood flow of a patient using partial re-breathing techniques. The apparatus includes a substantially instantaneously adjustable deadspace volume for accommodating differences in sizes or breathing capacities of various patients. The apparatus may be constructed of inexpensive elements, including one or more two-way valves, which render the apparatus very simple to use and inexpensive so that the unit may be employed as a disposable product. The method of the invention includes estimating the cardiac output or pulmonary capillary blood flow of a patient based on partial pressure of alveolar CO2, rather than on the partial pressure of end tidal CO2, as previously practiced. A computer program for calculating the cardiac output or pulmonary capillary blood flow of a patient is also disclosed.
    Type: Grant
    Filed: February 6, 2001
    Date of Patent: November 18, 2003
    Assignee: NTC Technology Inc.
    Inventors: Joseph A. Orr, Scott A. Kofoed, Dwayne Westenskow, Michael B. Jaffe