Patents by Inventor Scott A. Kofoed
Scott A. Kofoed 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).
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Patent number: 8096297Abstract: 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: GrantFiled: February 9, 2010Date of Patent: January 17, 2012Assignee: RIC Investments, LLCInventors: Joseph A. Orr, Scott A. Kofoed, Dwayne Westenskow, Michael B. Jaffe
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Publication number: 20100132710Abstract: 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: ApplicationFiled: February 9, 2010Publication date: June 3, 2010Applicant: RIC INVESTMENTS, LLCInventors: JOSEPH A. ORR, SCOTT A. KOFOED, DWAYNE WESTENSKOW, MICHAEL B. JAFFE
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Publication number: 20100106040Abstract: A system for sensing respiratory pressure includes a portable pressure transducer configured to be carried by or proximate to a respiratory conduit, such as a breathing circuit or a nasal canula. The portable pressure transducer may removably couple with a pneumotach, in the form of an airway adapter, disposed along the respiratory conduit. The pneumotach may include two pressure ports positioned at opposite sides of an obstruction, which partially blocks flow through a primary conduit of the pneumotach. Corresponding sample conduits of the portable pressure transducer removably couple with the pressure ports. The pressure ports may have sealing elements which are configured to seal against piercing members of the sample conduits upon introduction of the piercing members therethrough. Upon removal of the piercing members, the sealing elements substantially reseal. Methods for using the system are also disclosed.Type: ApplicationFiled: December 16, 2009Publication date: April 29, 2010Applicant: RIC INVESTMENTS, LLC, WILMINGTON, DEInventors: Joseph A. ORR, Scott A. KOFOED, Kevin DURST
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Patent number: 7686012Abstract: 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: GrantFiled: May 2, 2005Date of Patent: March 30, 2010Assignee: RIC Investments, LLCInventors: Joseph A. Orr, Scott A. Kofoed, Dwayne Westenskow, Michael B. Jaffe
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Patent number: 7654146Abstract: A system for sensing respiratory pressure includes a portable pressure transducer configured to be carried by or proximate to a respiratory conduit, such as a breathing circuit or a nasal canula. The portable pressure transducer may removably couple with a pneumotach, in the form of an airway adapter, disposed along the respiratory conduit. The pneumotach may include two pressure ports positioned at opposite sides of an obstruction, which partially blocks flow through a primary conduit of the pneumotach. Corresponding sample conduits of the portable pressure transducer removably couple with the pressure ports. The pressure ports may have sealing elements which are configured to seal against piercing members of the sample conduits upon introduction of the piercing members therethrough. Upon removal of the piercing members, the sealing elements substantially reseal. Methods for using the system are also disclosed.Type: GrantFiled: February 12, 2007Date of Patent: February 2, 2010Assignee: RIC Investments, LLCInventors: Joseph A. Orr, Scott A. Kofoed, Kevin Durst
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Patent number: 7335164Abstract: An integrated airway adapter capable of monitoring any combination of respiratory flow, O2 concentration, and concentrations of one or more of CO2, N2O, and an anesthetic agent in real time, breath by breath. Respiratory flow may be monitored with differential pressure flow meters under diverse inlet conditions through improved sensor configurations which minimize phase lag and dead space within the airway. Molecular oxygen concentration may be monitored by way of luminescence quenching techniques. Infrared absorption techniques may be used to monitor one or more of CO2, N2O, and anesthetic agents.Type: GrantFiled: April 24, 2001Date of Patent: February 26, 2008Assignee: NTC Technology, Inc.Inventors: Leslie E. Mace, Lawrence L. Labuda, Perry R. Blazewicz, David R. Rich, Michael B. Jaffe, Joseph A. Orr, Scott A. Kofoed
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Publication number: 20070261498Abstract: A system for sensing respiratory pressure includes a portable pressure transducer configured to be carried by or proximate to a respiratory conduit, such as a breathing circuit or a nasal canula. The portable pressure transducer may removably couple with a pneumotach, in the form of an airway adapter, disposed along the respiratory conduit. The pneumotach may include two pressure ports positioned at opposite sides of an obstruction, which partially blocks flow through a primary conduit of the pneumotach. Corresponding sample conduits of the portable pressure transducer removably couple with the pressure ports. The pressure ports may have sealing elements which are configured to seal against piercing members of the sample conduits upon introduction of the piercing members therethrough. Upon removal of the piercing members, the sealing elements substantially reseal. Methods for using the system are also disclosed.Type: ApplicationFiled: February 12, 2007Publication date: November 15, 2007Applicant: RIC Investments, LLC.Inventors: Joseph Orr, Scott Kofoed, Kevin Durst
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Patent number: 7174789Abstract: A system for sensing respiratory pressure includes a portable pressure transducer configured to be carried by or proximate to a respiratory conduit, such as a breathing circuit or a nasal canula. The portable pressure transducer may removably couple with a pneumotach, in the form of an airway adapter, disposed along the respiratory conduit. The pneumotach may include two pressure ports positioned at opposite sides of an obstruction, which partially blocks flow through a primary conduit of the pneumotach. Corresponding sample conduits of the portable pressure transducer removably couple with the pressure ports. The pressure ports may have sealing elements which are configured to seal against piercing members of the sample conduits upon introduction of the piercing members therethrough. Upon removal of the piercing members, the sealing elements substantially reseal. Methods for using the system are also disclosed.Type: GrantFiled: November 21, 2005Date of Patent: February 13, 2007Assignee: RIC Investments, LLCInventors: Joseph A Orr, Scott A Kofoed, Kevin Durst
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Publication number: 20060129054Abstract: 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: ApplicationFiled: February 3, 2006Publication date: June 15, 2006Inventors: Joseph Orr, Michael Jaffe, Scott Kofoed, Dwayne Westenskow
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Publication number: 20060117856Abstract: A system for sensing respiratory pressure includes a portable pressure transducer configured to be carried by or proximate to a respiratory conduit, such as a breathing circuit or a nasal canula. The portable pressure transducer may removably couple with a pneumotach, in the form of an airway adapter, disposed along the respiratory conduit. The pneumotach may include two pressure ports positioned at opposite sides of an obstruction, which partially blocks flow through a primary conduit of the pneumotach. Corresponding sample conduits of the portable pressure transducer removably couple with the pressure ports. The pressure ports may have sealing elements which are configured to seal against piercing members of the sample conduits upon introduction of the piercing members therethrough. Upon removal of the piercing members, the sealing elements substantially reseal. Methods for using the system are also disclosed.Type: ApplicationFiled: November 21, 2005Publication date: June 8, 2006Applicant: RIC Investments, LLC.Inventors: Joseph Orr, Scott Kofoed, Kevin Durst
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Patent number: 7018340Abstract: 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: GrantFiled: September 8, 2003Date of Patent: March 28, 2006Assignee: NTC Technology Inc.Inventors: Michael B. Jaffe, Joseph A. Orr, Scott A. Kofoed, Dwayne Westenskow
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Publication number: 20060000256Abstract: A test system for assessing the performance of an analyzer for a gas or an anesthetic agent includes a source of a calibration gas mixture, a valve for controlling flow of gas from the source, a low-pressure tube, a sample tube in communication with the low-pressure tube, and a connector for assembling the analyzer to the test system. The test system may also include a valve for diverting ambient air into the sample tube instead of the calibration gas mixture. Additionally, the test system may include one or more of a barometer, a flow meter, an analyzer for gas or anesthetic agents, a flow restriction system, and a relatively high pressure source. Methods for testing analyzers are also disclosed.Type: ApplicationFiled: June 20, 2005Publication date: January 5, 2006Inventors: Joseph Orr, Scott Kofoed
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Patent number: 6968741Abstract: A system for sensing respiratory pressure includes a portable pressure transducer configured to be carried by or proximate to a respiratory conduit, such as a breathing circuit or a nasal canula. The portable pressure transducer may removably couple with a pneumotach, in the form of an airway adapter, disposed along the respiratory conduit. The pneumotach may include two pressure ports positioned at opposite sides of an obstruction, which partially blocks flow through a primary conduit of the pneumotach. Corresponding sample conduits of the portable pressure transducer removably couple with the pressure ports. The pressure ports may have sealing elements which are configured to seal against piercing members of the sample conduits upon introduction of the piercing members therethrough. Upon removal of the piercing members, the sealing elements substantially reseal. Methods for using the system are also disclosed.Type: GrantFiled: December 5, 2003Date of Patent: November 29, 2005Assignee: Respironics, Inc.Inventors: Joseph A. Orr, Scott A. Kofoed, Kevin Durst
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Publication number: 20050203432Abstract: 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: ApplicationFiled: May 2, 2005Publication date: September 15, 2005Inventors: Joseph Orr, Scott Kofoed, Dwayne Westenskow, Michael Jaffe
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Patent number: 6908438Abstract: 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: GrantFiled: September 8, 2003Date of Patent: June 21, 2005Assignee: Respironics Novametrix, Inc.Inventors: Joseph A. Orr, Scott A. Kofoed, Dwayne Westenskow, Michael B. Jaffe
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Publication number: 20040198554Abstract: Systems and methods that generate and transfer data representative of a subject's metabolism for subsequent use with one or more different exercise apparatus are provided. Exercise apparatus which are configured to receive such data, as well as to use such data to calculate exercise results which are tailored to a subject to whom the data applies, are also disclosed.Type: ApplicationFiled: December 22, 2003Publication date: October 7, 2004Inventors: Joseph A. Orr, Scott A. Kofoed
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Publication number: 20040118212Abstract: A system for sensing respiratory pressure includes a portable pressure transducer configured to be carried by or proximate to a respiratory conduit, such as a breathing circuit or a nasal canula. The portable pressure transducer may removably couple with a pneumotach, in the form of an airway adapter, disposed along the respiratory conduit. The pneumotach may include two pressure ports positioned at opposite sides of an obstruction, which partially blocks flow through a primary conduit of the pneumotach. Corresponding sample conduits of the portable pressure transducer removably couple with the pressure ports. The pressure ports may have sealing elements which are configured to seal against piercing members of the sample conduits upon introduction of the piercing members therethrough. Upon removal of the piercing members, the sealing elements substantially reseal. Methods for using the system are also disclosed.Type: ApplicationFiled: December 5, 2003Publication date: June 24, 2004Applicant: Respironics, Inc.Inventors: Joseph A. Orr, Scott A. Kofoed, Kevin Durst
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Publication number: 20040059239Abstract: 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: ApplicationFiled: September 8, 2003Publication date: March 25, 2004Inventors: Michael B. Jaffe, Joseph A. Orr, Scott A. Kofoed, Dwayne Westenskow
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Publication number: 20040049113Abstract: 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: ApplicationFiled: September 8, 2003Publication date: March 11, 2004Inventors: Joseph A. Orr, Scott A. Kofoed, Dwayne Westenskow, Michael B. Jaffe
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Patent number: 6691579Abstract: A system for sensing respiratory pressure includes a portable pressure transducer configured to be carried by or proximate to a respiratory conduit, such as a breathing circuit or a nasal canula. The portable pressure transducer may removably couple with a pneumotach, in the form of an airway adapter, disposed along the respiratory conduit. The pneumotach may include two pressure ports positioned at opposite sides of an obstruction, which partially blocks flow through a primary conduit of the pneumotach. Corresponding sample conduits of the portable pressure transducer removably couple with the pressure ports. The pressure ports may have sealing elements which are configured to seal against piercing members of the sample conduits upon introduction of the piercing members therethrough. Upon removal of the piercing members, the sealing elements substantially reseal. Methods for using the system are also disclosed.Type: GrantFiled: May 7, 2002Date of Patent: February 17, 2004Assignee: Respironics, Inc.Inventors: Joseph A. Orr, Scott A. Kofoed, Kevin Durst