Patents by Inventor Steven Duquette

Steven Duquette 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: 10495112
    Abstract: A low-noise blower has an impeller with an impeller plate and a plurality of blades each attached to the impeller plate. Each blade has a tip and a leading surface with a first portion that is proximate to the tip and has a first radius that is within a range of 0.03-0.20 inch.
    Type: Grant
    Filed: January 9, 2017
    Date of Patent: December 3, 2019
    Assignee: Vyaire Medical Capital LLC
    Inventor: Steven Duquette
  • Patent number: 10156232
    Abstract: Provided is a high frequency oscillating ventilator comprising a housing assembly, a linear actuator, a linear coil, a piston mounted on a pushrod, a diaphragm dividing a housing into a first and second side and having an opening formed on the second side that is fluidly connected to the patient's airway for delivering gas thereto. The linear actuator is fixedly mounted to the housing assembly and has a linear coil coaxially disposed therewithin. A pushrod supports the linear coil on the linear actuator to allow relative axially sliding therebetween. The piston is directly mounted to the diaphragm such that reciprocation thereof as effectuated by the linear coil cooperating with the linear actuator alternately produces positive and negative pressure waves in the gas in the patient's airway.
    Type: Grant
    Filed: August 8, 2016
    Date of Patent: December 18, 2018
    Assignee: CareFusion 207, Inc.
    Inventors: Steven Duquette, Thomas Westfall, Steve Han
  • Patent number: 9541098
    Abstract: A low-noise blower has an impeller with an impeller plate and a plurality of blades each attached to the impeller plate. Each blade has a tip and a leading surface with a first portion that is proximate to the tip and has a first radius that is within a range of 0.03-0.20 inch.
    Type: Grant
    Filed: June 28, 2013
    Date of Patent: January 10, 2017
    Assignee: VYAIRE MEDICAL CAPITAL LLC
    Inventor: Steven Duquette
  • Patent number: 9427540
    Abstract: Provided is a high frequency oscillating ventilator comprising a housing assembly, a linear actuator, a linear coil, a piston mounted on a pushrod, a diaphragm dividing a housing into a first and second side and having an opening formed on the second side that is fluidly connected to the patient's airway for delivering gas thereto. The linear actuator is fixedly mounted to the housing assembly and has a linear coil coaxially disposed therewithin. A pushrod supports the linear coil on the linear actuator to allow relative axially sliding therebetween. The piston is directly mounted to the diaphragm such that reciprocation thereof as effectuated by the linear coil cooperating with the linear actuator alternately produces positive and negative pressure waves in the gas in the patient's airway.
    Type: Grant
    Filed: November 8, 2005
    Date of Patent: August 30, 2016
    Assignee: CareFusion 207, Inc.
    Inventors: Steven Duquette, Thomas Westfall, Steve Han
  • Patent number: 9155852
    Abstract: A method and system for controlling fluid flow settings by receiving a precondition pressure wave function, representative of a precondition frequency, a precondition amplitude and a precondition pressure of the fluid flow in the system, establishing an operating pressure wave function, representative of an operating frequency, an operating amplitude and an operating pressure of the fluid flow desired in the system, determining cycle error between the precondition pressure wave function and the operating pressure wave function, converting the cycle error to flow adjustment, and updating an operating flow with the flow adjustment.
    Type: Grant
    Filed: April 24, 2013
    Date of Patent: October 13, 2015
    Assignee: CareFusion 207, Inc.
    Inventors: Ihab S. Soliman, Steven Duquette
  • Publication number: 20150003966
    Abstract: A low-noise blower has an impeller with an impeller plate and a plurality of blades each attached to the impeller plate. Each blade has a tip and a leading surface with a first portion that is proximate to the tip and has a first radius that is within a range of 0.03-0.20 inch.
    Type: Application
    Filed: June 28, 2013
    Publication date: January 1, 2015
    Inventor: Steven Duquette
  • Patent number: 8528557
    Abstract: A continuous positive airway pressure system features a housing forming an airway chamber, and an air pressure inlet and an air pressure outlet. The housing further defines internally a pair of tapered air jets, and a pair of tapered air receivers. The air receivers are located downstream of the air supply jets and disposed coaxially with respective ones of the air supply jets. Each receiver has a taper in an opposite direction to the direction of the taper of the air supply jets. A pair of nasal prongs is located downstream of the air receiving jets.
    Type: Grant
    Filed: March 22, 2012
    Date of Patent: September 10, 2013
    Assignee: CareFusion 207, Inc.
    Inventors: Steven Duquette, Steve Han
  • Patent number: 8474455
    Abstract: A system for circuit compliance compensated volume assurance pressure control in a patient respiratory ventilation circuit, having a patient circuit volume estimator for estimating a patient circuit compliance, a patient circuit volume estimator to estimate a circuit volume VOLCKT—EST based on the patient circuit compliance, a patient volume observer, for estimating a patient volume VOLTID—EST based on a measure delivered net volume VOLNET and the patient circuit compliance, a volume assurance controller for generating a circuit compliance volume compensation factor VOLTID—CTL based on a preset assured volume VOLASS—SET and the estimated patient volume VOLTID—EST, and a decelerating inspiratory flow controller, operative to generate a decelerating inspiratory peak flow based on a preset inspiratory time TINSP and the volume compensation factor VOLTID—CTL.
    Type: Grant
    Filed: January 10, 2006
    Date of Patent: July 2, 2013
    Assignee: CareFusion 207, Inc.
    Inventors: Ihab S. Soliman, Steven Duquette
  • Patent number: 8453644
    Abstract: A system and a method for circuit compliance compensated pressure control in a patient respiratory ventilation system, having a pressure regulated feedback servo control loop, a pressure-regulated volume controller, and a patient volume observer. The patient volume observer is operative to estimate a patient volume, that is, the volume actually delivered to the patient by accounting for volume deviation or loss caused by patient circuit leakage and valve dynamics. Based on the difference between the estimated patient volume and a set tidal volume, the pressure-regulated volume controller is operative to generate and update a circuit compliance pressure compensation factor. The pressure regulated feedback servo control loop is operative to modulate the peak airway pressure based on the circuit compliance pressure compensation factor, so as to achieve the set tidal volume while maintaining a constant inspiratory time and a constant I:E ratio.
    Type: Grant
    Filed: March 3, 2011
    Date of Patent: June 4, 2013
    Assignee: CareFusion 207, Inc.
    Inventors: Ihab S. Soliman, Steven Duquette
  • Patent number: 8443801
    Abstract: A method and system for controlling fluid flow settings by receiving a precondition pressure wave function, representative of a precondition frequency, a precondition amplitude and a precondition pressure of the fluid flow in the system, establishing an operating pressure wave function, representative of an operating frequency, an operating amplitude and an operating pressure of the fluid flow desired in the system, determining cycle error between the precondition pressure wave function and the operating pressure wave function, converting the cycle error to flow adjustment, and updating an operating flow with the flow adjustment.
    Type: Grant
    Filed: June 7, 2006
    Date of Patent: May 21, 2013
    Assignee: CareFusion 207, Inc.
    Inventors: Ihab S. Soliman, Steven Duquette
  • Patent number: 8371304
    Abstract: A continuous positive airway pressure system features a housing forming an airway chamber, and an air pressure inlet and an air pressure outlet. The housing further defines internally a pair of tapered air jets, and a pair of tapered air receivers. The air receivers are located downstream of the air supply jets and disposed coaxially with respective ones of the air supply jets. Each receiver has a taper in an opposite direction to the direction of the taper of the air supply jets. A pair of nasal prongs is located downstream of the air receiving jets. Each receiver comprises a hemispherical section that is oriented at an angle off the center line of the supply.
    Type: Grant
    Filed: July 30, 2009
    Date of Patent: February 12, 2013
    Assignee: CareFusion
    Inventors: Steven Duquette, Steve Han
  • Publication number: 20120174927
    Abstract: A continuous positive airway pressure system features a housing forming an airway chamber, and an air pressure inlet and an air pressure outlet. The housing further defines internally a pair of tapered air jets, and a pair of tapered air receivers. The air receivers are located downstream of the air supply jets and disposed coaxially with respective ones of the air supply jets. Each receiver has a taper in an opposite direction to the direction of the taper of the air supply jets. A pair of nasal prongs is located downstream of the air receiving jets.
    Type: Application
    Filed: March 22, 2012
    Publication date: July 12, 2012
    Inventors: Steven Duquette, Steve Han
  • Patent number: 8210182
    Abstract: A continuous positive airway pressure system features a housing forming an airway chamber, and an air pressure inlet and an air pressure outlet. The housing further defines internally a pair of tapered air jets, and a pair of tapered air receivers. The air receivers are located downstream of the air supply jets and disposed coaxially with respective ones of the air supply jets. Each receiver has a taper in an opposite direction to the direction of the taper of the air supply jets. A pair of nasal prongs is located downstream of the air receiving jets.
    Type: Grant
    Filed: December 28, 2007
    Date of Patent: July 3, 2012
    Assignee: CareFusion 207, Inc.
    Inventors: Steven Duquette, Steve Han
  • Patent number: 8100125
    Abstract: Provided is a universal interface adapted for providing continuous positive airway pressure to a patient when the interface is used with a standard ventilator. The interface is configured to operate at a supply pressure no greater than about 120 centimeters of H2O in order to deliver pressure to the patient of up to about 15 cm of H2O at a flow rate of up to about 12 liters/minute. The universal interface may comprise an interface body having a space pair of breathing passageways intersecting a corresponding of supply passageways. Each one of the breathing passageways is comprised of a patient passageway and an exhalation passageway. Each one of the supply passageways includes a jet venturi having a taper portion. Each one of the exhalation passageways includes a taper portion which tapers outwardly along a direction from the patient passageway toward the exhalation passageway.
    Type: Grant
    Filed: September 30, 2005
    Date of Patent: January 24, 2012
    Assignee: CareFusion 207, Inc.
    Inventors: Steven Duquette, Alex Stenzler, Steve Han
  • Publication number: 20110214672
    Abstract: A system and a method for circuit compliance compensated pressure control in a patient respiratory ventilation system, having a pressure regulated feedback servo control loop, a pressure-regulated volume controller, and a patient volume observer. The patient volume observer is operative to estimate a patient volume, that is, the volume actually delivered to the patient by accounting for volume deviation or loss caused by patient circuit leakage and valve dynamics. Based on the difference between the estimated patient volume and a set tidal volume, the pressure-regulated volume controller is operative to generate and update a circuit compliance pressure compensation factor. The pressure regulated feedback servo control loop is operative to modulate the peak airway pressure based on the circuit compliance pressure compensation factor, so as to achieve the set tidal volume while maintaining a constant inspiratory time and a constant I:E ratio.
    Type: Application
    Filed: March 3, 2011
    Publication date: September 8, 2011
    Inventors: Ihab S. Soliman, Steven Duquette
  • Patent number: 7918223
    Abstract: A system and a method for circuit compliance compensated pressure control in a patient respiratory ventilation system, having a pressure regulated feedback servo control loop, a pressure-regulated volume controller, and a patient volume observer. The patient volume observer is operative to estimate a patient volume, that is, the volume actually delivered to the patient by accounting for volume deviation or loss caused by patient circuit leakage and valve dynamics. Based on the difference between the estimated patient volume and a set tidal volume, the pressure-regulated volume controller is operative to generate and update a circuit compliance pressure compensation factor. The pressure regulated feedback servo control loop is operative to modulate the peak airway pressure based on the circuit compliance pressure compensation factor, so as to achieve the set tidal volume while maintaining a constant inspiratory time and a constant I:E ratio.
    Type: Grant
    Filed: November 9, 2005
    Date of Patent: April 5, 2011
    Assignee: CareFusion 207, Inc.
    Inventors: Ihab S. Soliman, Steven Duquette
  • Patent number: 7886739
    Abstract: A circuit compliance compensated volume control system in a patient respiratory ventilation system and method, including: a circuit compliance estimator, to provide a relationship between a circuit volume and a differential pressure between a circuit pressure and a positive end-expiratory pressure (PEEP) of the respiratory circuit, a circuit volume estimator, operative to provide an estimated circuit volume based on the relationship between the circuit volume and the differential pressure, a patient volume observer, operative to provide an estimated patient volume by subtracting the estimated circuit volume from a measured machine delivered net volume, and a volume delivery controller, operative to update the machine delivered net volume based on the estimated patient volume and a set tidal volume.
    Type: Grant
    Filed: October 11, 2005
    Date of Patent: February 15, 2011
    Assignee: Carefusion 207, Inc.
    Inventors: Ihab S. Soliman, Steven Duquette
  • Publication number: 20100252044
    Abstract: A continuous positive airway pressure system features a housing forming an airway chamber, and an air pressure inlet and an air pressure outlet. The housing further defines internally a pair of tapered air jets, and a pair of tapered air receivers. The air receivers are located downstream of the air supply jets and disposed coaxially with respective ones of the air supply jets. Each receiver has a taper in an opposite direction to the direction of the taper of the air supply jets. A pair of nasal prongs is located downstream of the air receiving jets. Each receiver comprises a hemispherical section that is oriented at an angle off the center line of the supply.
    Type: Application
    Filed: July 30, 2009
    Publication date: October 7, 2010
    Applicant: Care Fusion
    Inventors: Steven Duquette, Steve Han
  • Publication number: 20090293876
    Abstract: A method and system for controlling fluid flow settings by receiving a precondition pressure wave function, representative of a precondition frequency, a precondition amplitude and a precondition pressure of the fluid flow in the system, establishing an operating pressure wave function, representative of an operating frequency, an operating amplitude and an operating pressure of the fluid flow desired in the system, determining cycle error between the precondition pressure wave function and the operating pressure wave function, converting the cycle error to flow adjustment, and updating an operating flow with the flow adjustment.
    Type: Application
    Filed: June 7, 2006
    Publication date: December 3, 2009
    Inventors: Ihad S. Soliman, Steven Duquette
  • Publication number: 20090165799
    Abstract: A continuous positive airway pressure system features a housing forming an airway chamber, and an air pressure inlet and an air pressure outlet. The housing further defines internally a pair of tapered air jets, and a pair of tapered air receivers. The air receivers are located downstream of the air supply jets and disposed coaxially with respective ones of the air supply jets. Each receiver has a taper in an opposite direction to the direction of the taper of the air supply jets. A pair of nasal prongs is located downstream of the air receiving jets.
    Type: Application
    Filed: December 28, 2007
    Publication date: July 2, 2009
    Applicant: VIASYS MANUFACTURING, INC.
    Inventors: Steven Duquette, Steve Han