Patents by Inventor Dion Charles Chewe Martin
Dion Charles Chewe Martin 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: 10307560Abstract: A positive airway pressure (PAP) device for supplying a flow of breathable gas to a patient includes a flow generator configured to pressurize a flow of breathable gas and a humidifier configured to receive and humidify the pressurized flow of breathable gas from the flow generator. The PAP device also includes a power source. The flow generator, humidifier and power source are positioned so that heat generated by at least one of the flow generator and the power source is conveyed to water in the humidifier.Type: GrantFiled: March 20, 2015Date of Patent: June 4, 2019Assignee: ResMed LimitedInventors: Dion Charles Chewe Martin, Barton John Kenyon, Alexander Virr, Dmitri Anatolievich Doudkine, Philip Rodney Kwok, Richard Charles Napper, John Michael Snow
-
Publication number: 20190111226Abstract: Apparatus and methods provide control for generation of a flow of air to a patient's airways for different respiratory therapies. The pressure and a flow rate may be simultaneously controlled so as to provide a pressure therapy and a flow therapy. The system may include one or more flow generators, in which the control of the pressure and flow rate may include altering the output of one or more of the flow generators and/or an optional adjustable vent. The pressure and flow rate may each be held at a constant. One or both of the pressure and flow rate may also vary in accordance with a desired therapy. The air may be provided via a patient interface that includes a vent to atmosphere, which may be the adjustable vent. The vent may be actuated by a controller to implement the simultaneous control of pressure and flow rate of the air.Type: ApplicationFiled: December 9, 2016Publication date: April 18, 2019Applicant: ResMed LimitedInventors: Liam Holley, Gordon Joseph Malouf, Dion Charles Chewe Martin, Peter Wlodarczyk, Quangang Yang
-
Publication number: 20190099568Abstract: A control system provides automated control of gas washout of a patient interface, such as a mask or nasal prongs. A gas washout vent assembly of the system may include a variable exhaust area such as one defined by overlapping apertures of the assembly or a conduit having a variable gas passage channel. The vent assembly may be formed by nested structures, such as conic or cylindrical members, each having an opening of the overlapping apertures. The vent assembly may be attached substantially near or included with the patient interface. An actuator of the assembly, such as a solenoid or voice coil, manipulates an aperture of the vent assembly. The actuator may be configured for control by a controller to change the exhaust area of the vent assembly based on various methodologies including, for example, sleep detection, disordered breathing event detection, rebreathing volume calculation and/or leak detection.Type: ApplicationFiled: June 27, 2018Publication date: April 4, 2019Applicant: ResMed LimitedInventors: Roger Mervyn Lloyd Foote, Ronald James Huby, Muditha Pradeep Dantanarayana, Damien Julian Mazzone, Dion Charles Chewe Martin, Jeffrey Peter Armitstead, Justin John Formica, Zhuo Ran Tang, Lance Steven Cohen, James William Charles Vandyke, David Brent Sears, Aleksandr S. Nagorny, Joseph M. Sampietro, Steven Paul Farrugia
-
Patent number: 10175300Abstract: Systems and methods for detecting developing faults in a flow generator or ventilator during therapeutic use thereof are provided. The motor current may be measured to estimate the torque input by the motor, while the output torque from the impeller may be determined (e.g., as inferred from the motor control system model and/or by consulting a lookup table). One or more transducers may collect data useful in determining the input and output torques. A difference between the input (to the motor) torque and the output (from the impeller) torque may be calculated. The difference, optionally filtered using a low-pass filter to reduce noise, may be compared to a predetermined threshold once or over a period of time to detect gross failures and/or developing failures. Once a failure or developing failure is detected, a user may be alerted and/or the flow generator may be placed into a “service required” mode.Type: GrantFiled: July 21, 2015Date of Patent: January 8, 2019Assignee: RESMED LIMITEDInventors: Jeffrey Peter Armitstead, Dion Charles Chewe Martin, William Mcinnes Somerville
-
Publication number: 20180236191Abstract: Methods and apparatus provide automated circuit disconnection monitoring such as for a respiratory apparatus or system. Disconnection of a patient circuit, including a patient interface and air delivery circuit, may be detected and a message or alarm activated. In some versions, detecting occurrences of circuit disconnection event(s), such as by a processor, may be based on an instantaneous disconnection parameter as a function of a disconnection setting. The disconnection setting may be determined based on patient circuit type. The instantaneous disconnection parameter may be determined from detected pressure and flow rate, and may be, for example, a conductance value or an impedance value. Disconnection events may be qualified by one or more detected respiratory indicators.Type: ApplicationFiled: August 12, 2016Publication date: August 23, 2018Applicant: ResMed LimitedInventors: Dion Charles Chewe Martin, Clancy John Dennis, Benjamin John Leavens, Etienne Veschambre, Stuart Wishart
-
Patent number: 10029058Abstract: A control system (706) provides automated control of gas washout of a patient interface, such as a mask or nasal prongs. A gas washout vent assembly (60) of the system may include a variable exhaust area such as one defined by overlapping apertures of the assembly or a conduit having a variable gas passage channel. The vent assembly may be formed by nested structures, such as conic or cylindrical members, each having an opening of the overlapping apertures. The vent assembly may be attached substantially near or included with the patient interface. An actuator of the assembly, such as a solenoid or voice coil, manipulates an aperture of the vent assembly. The actuator may be configured for control by a controller to change the exhaust area of the vent assembly based on various methodologies including, for example, sleep detection, disordered breathing event detection, rebreathing volume calculation and/or leak detection.Type: GrantFiled: September 13, 2012Date of Patent: July 24, 2018Assignee: ResMed LimitedInventors: Roger Mervyn Lloyd Foote, Ronald James Huby, Muditha Pradeep Dantanarayana, Damien Julian Mazzone, Dion Charles Chewe Martin, Jeffrey Peter Armitstead, Justin John Formica, Zhuo Ran Tang, Lance Steven Cohen, James William Charles Vandyke, David Brent Sears, Aleksandr S. Nagorny, Joe Sampietro, Steven Paul Farrugia
-
Publication number: 20180169361Abstract: A method, such as in a controller associated with a respiratory therapy device, determines whether high flow therapy is being used by a patient. The method may include determining whether a property of a flow of air being delivered by a respiratory therapy device along an air circuit to an unsealed patient interface contains a significant oscillation within a breathing rate frequency band. The method may also include generating, dependent on the determination, an indication of whether high flow therapy is being used by the patient.Type: ApplicationFiled: March 14, 2016Publication date: June 21, 2018Applicant: RedMed LimitedInventors: Clancy John DENNIS, Liam HOLLEY, Gordon Joseph MALOUF, Dion Charles Chewe MARTIN, Peter WLODARCZYK
-
Publication number: 20180064894Abstract: A blower includes a housing including a proximal opening and a distal opening that are co-axially aligned, a stator component) provided to the housing, an impeller positioned between the proximal opening of the housing and the stator component, and a motor adapted to drive the impeller. The impeller includes a plurality of impeller blades. The stator component includes a plurality of air directing grooves along its exterior surface. The leading edge of the air directing grooves extend tangentially outwards from the outer tips of the impeller blades and are configured to collect the air exiting the impeller blades and direct it from a generally tangential direction to a generally radial direction by dividing the air from the impeller and directing the air along a curved path towards the distal opening so that airflow becomes substantially laminar.Type: ApplicationFiled: November 13, 2017Publication date: March 8, 2018Inventors: Timothy Tsun-Fai FU, Dion Charles Chewe MARTIN, Philippe Auguste CHALVIGNAC, Quangang YANG, David CREUSOT
-
Patent number: 9861774Abstract: A blower (10) includes a housing (20) including a proximal opening (23) and a distal opening (25) that are co-axially aligned, a stator component (30) provided to the housing, an impeller (60) positioned between the proximal opening of the housing and the stator component, and a motor (40) adapted to drive the impeller. The impeller includes a plurality of impeller blades. The stator component includes a plurality of air directing grooves (35) along its exterior surface. The leading edge of the air directing grooves extend tangentially outwards from the outer tips of the impeller blades and are configured to collect the air exiting the impeller blades and direct it from a generally tangential direction to a generally radial direction by dividing the air from the impeller and directing the air along a curved path towards the distal opening so that airflow becomes substantially laminar.Type: GrantFiled: August 11, 2010Date of Patent: January 9, 2018Assignee: ResMed Motor Technologies Inc.Inventors: Timothy Tsun-Fai Fu, Dion Charles Chewe Martin, Philippe Auguste Chalvignac, Quangang Yang, David Creusot
-
Publication number: 20170326314Abstract: Methods, systems and/or apparatus for slowing a patient's breathing by using positive pressure therapy. In certain embodiments, a current interim breathing rate target is set, and periodically the magnitude of a variable pressure waveform that is scaled to the current interim breathing rate target is increased if the patient's breathing rate is greater than the interim breathing rate target in order to lengthen the patient's breath duration. The magnitude of the pressure increase may be a function of the difference between the interim breathing rate target and the patient's breathing rate. The interim breathing rate target may be periodically reduced in response to the patient's breathing rate slowing down toward the current interim breathing rate target. The variable pressure waveform cycles from an inhalation phase to an exhalation phase when the patient airflow decreases to a cycle threshold, the cycle threshold being a function of flow versus time within a breath and generally increasing with time.Type: ApplicationFiled: August 3, 2017Publication date: November 16, 2017Applicant: ResMed LimitedInventors: Dion Charles Chewe Martin, David John Bassin
-
Publication number: 20170311879Abstract: Apparatus and methods provide compliance management tools such as for respiratory pressure therapy. In some versions, a respiratory pressure therapy system may include one or more processors, such as of a data server, configured to communicate with a computing device and/or a respiratory pressure therapy device. The respiratory pressure therapy device may be configured to deliver respiratory pressure therapy to a patient for a session. The computing device may be associated with the patient. The processor(s) may be further configured to compute a therapy quality indicator of the session from usage data relating to the session. The therapy quality indicator may be a number derived from contributions of a plurality of usage variables for the session in the usage data. The processor(s) may be further configured to present, such as by transmitting, the therapy quality indicator to the computing device. The therapy quality indicator may promote patient compliance.Type: ApplicationFiled: October 23, 2015Publication date: November 2, 2017Applicant: ResMed LimitedInventors: Jeffrey Peter Armitstead, Mark David Buckley, Michael Waclaw Colefax, Susan Robyn Lynch, Dion Charles Chewe Martin, Gregory Robert Peake, Dinesh Ramanan, Jamie Graeme Wehbeh, Natalie Zotelo
-
Publication number: 20170274165Abstract: Respiratory pressure treatment apparatus include automated methodologies for controlling changes to pressure in the presence of sleep disordered breathing events. In an example apparatus, various levels of expiratory pressure relief can provide different pressure reductions for patient comfort during expiration (333-A, 333-B, 333-C). The control parameters for these levels may be automatically modified based on the detection of an open airway. Similarly, in some embodiments, the levels may be automatically adjusted based on a detection of persistent obstruction. In still further embodiments, control parameters associated with a rise time of an early portion of an inspiratory pressure treatment may be automatically adjusted upon detection of flow limitation to permit a change to more aggressive waveforms from more comfortable waveforms for the treatment of sleep disordered breathing events.Type: ApplicationFiled: May 16, 2017Publication date: September 28, 2017Inventors: Dinesh Ramanan, Jeffrey Peter Armitstead, Dion Charles Chewe Martin
-
Patent number: 9750906Abstract: Methods, systems and/or apparatus for slowing a patient's breathing by using positive pressure therapy. In certain embodiments, a current interim breathing rate target is set, and periodically the magnitude of a variable pressure waveform that is scaled to the current interim breathing rate target is increased if the patient's breathing rate is greater than the interim breathing rate target in order to lengthen the patient's breath duration. The magnitude of the pressure increase may be a function of the difference between the interim breathing rate target and the patient's breathing rate. The interim breathing rate target may be periodically reduced in response to the patient's breathing rate slowing down toward the current interim breathing rate target. The variable pressure waveform cycles from an inhalation phase to an exhalation phase when the patient airflow decreases to a cycle threshold, the cycle threshold being a function of flow versus time within a breath and generally increasing with time.Type: GrantFiled: July 17, 2014Date of Patent: September 5, 2017Assignee: ResMed LimitedInventors: Dion Charles Chewe Martin, David John Bassin
-
Publication number: 20170239433Abstract: Methods and apparatus provide automated controls for a respiratory pressure therapy device, such as a servo-ventilator. For example, a controller of a respiratory pressure therapy device may control application of pressure support ventilation therapy to an airway of a patient. The controller may control the respiratory pressure therapy device to auto-titrate an expiratory positive airway pressure (EPAP) of a pressure support ventilation therapy so as to maintain airway patency of the patient. The EPAP may be bounded below by a floor pressure limit. The controller may control the respiratory pressure therapy device to repeatedly adjust the floor pressure limit depending on events of interest during the auto-titration of the EPAP. Such methodologies may improve treatment for patients such as those suffering from sleep disordered breathing-comorbid hyperarousal disorders.Type: ApplicationFiled: October 26, 2015Publication date: August 24, 2017Applicant: ResMed LimitedInventors: Dion Charles Chewe MARTIN, Jeffrey Peter ARMITSTEAD, Dinesh RAMANAN
-
Patent number: 9682208Abstract: Respiratory pressure treatment apparatus include automated methodologies for controlling changes to pressure in the presence of sleep disordered breathing events. In an example apparatus, various levels of expiratory pressure relief can provide different pressure reductions for patient comfort during expiration (333-A, 333-B, 333-C). The control parameters for these levels may be automatically modified based on the detection of an open airway. Similarly, in some embodiments, the levels may be automatically adjusted based on a detection of persistent obstruction. In still further embodiments, control parameters associated with a rise time of an early portion of an inspiratory pressure treatment may be automatically adjusted upon detection of flow limitation to permit a change to more aggressive waveforms from more comfortable waveforms for the treatment of sleep disordered breathing events.Type: GrantFiled: November 16, 2010Date of Patent: June 20, 2017Assignee: ResMed LimitedInventors: Dinesh Ramanan, Jeffrey Peter Armitstead, Dion Charles Chewe Martin
-
Publication number: 20160067433Abstract: An air delivery system includes a controllable flow generator operable to generate a supply of pressurized breathable gas to be provided to a patient for treatment and a pulse oximeter configured to determine a measure of patient effort during a treatment period and provide a patient effort signal for input to control operation of the flow generator.Type: ApplicationFiled: November 18, 2015Publication date: March 10, 2016Inventors: Dion Charles Chewe MARTIN, John David Oates
-
Publication number: 20160022948Abstract: A mask assembly for delivering pressurized gas to a patient comprising a mask having an inspiratory port and an expiratory port located on generally opposite sides, wherein said ports are sized, oriented, positioned, and/or spaced apart a sufficient distance to allow a cross-flow of pressurized gas to flow through the mask assembly; an outlet limb connected to the expiratory port and having an aperture in pneumatic communication with the breathing chamber; the aperture size being variable between a first, open configuration and at least one second configuration that is different from the first. A ventilation system for delivering pressurized gas to a patient comprising a seal formed with the patient's airways and in pneumatic communication with a plenum chamber; an exchanger positioned at least partially within the plenum chamber, and in pneumatic communication with inspiratory and expiratory flow paths, to recover heat and/or moisture from gas exhaled by the patient.Type: ApplicationFiled: March 14, 2014Publication date: January 28, 2016Inventors: Dion Charles Chewe MARTIN, Etienne VESCHAMBRE, Paul Jan KLASEK
-
Patent number: 9220856Abstract: An air delivery system includes a controllable flow generator operable to generate a supply of pressurized breathable gas to be provided to a patient for treatment and a pulse oximeter configured to determine a measure of patient effort during a treatment period and provide a patient effort signal for input to control operation of the flow generator.Type: GrantFiled: October 6, 2005Date of Patent: December 29, 2015Assignee: RESMED LIMITEDInventors: Dion Charles Chewe Martin, John David Oates
-
Publication number: 20150323605Abstract: Systems and methods for detecting developing faults in a flow generator or ventilator during therapeutic use thereof are provided. The motor current may be measured to estimate the torque input by the motor, while the output torque from the impeller may be determined (e.g., as inferred from the motor control system model and/or by consulting a lookup table). One or more transducers may collect data useful in determining the input and output torques. A difference between the input (to the motor) torque and the output (from the impeller) torque may be calculated. The difference, optionally filtered using a low-pass filter to reduce noise, may be compared to a predetermined threshold once or over a period of time to detect gross failures and/or developing failures. Once a failure or developing failure is detected, a user may be alerted and/or the flow generator may be placed into a “service required” mode.Type: ApplicationFiled: July 21, 2015Publication date: November 12, 2015Inventors: Jeffrey Peter ARMITSTEAD, Dion Charles Chewe Martin, William Mcinnes Somerville
-
Publication number: 20150320960Abstract: A PAP system is adapted for treatment of respiratory disease or sleep disordered breathing and includes a headgear adapted for engaging a patient's head. The PAP system also includes a patient interface adapted to be secured to and sealed against a portion of the patient's face, in use, by the headgear. The PAP system further includes a flow generator adapted to be connected to the patient interface. The flow generator is adapted to be secured by a portion of the headgear to the patient's head. In addition, the flow generator includes a blower adapted to provide pressurised breathable gas to a patient through the patient interface. The blower is at least partially vibrationally isolated from the patient's head by at least one foam layer mounted within the flow generator to secure the blower. The at least one foam layer is adapted to reduce the amount of transmitted vibration received by the patient.Type: ApplicationFiled: July 21, 2015Publication date: November 12, 2015Inventors: Adam Francis BARLOW, Philippe Auguste CHALVIGNAC, David CREUSOT, Aaron Samuel DAVIDSON, Clementine DESVOUYES, Gregory Phillip DOCKAR, Dmitri Anatolievich DOUDKINE, Justin John FORMICA, Timothy Tsun-Fai FU, Craig Edward HARRIS, Robert Edward HENRY, Liam HOLLEY, Ronald James HUBY, Benjamin John HUNTER, Barton John KENYON, Philip Rodney KWOK, Dion Charles Chewe MARTIN, Frederick Arlet MAY, Michael Bruce MOIR, Marco MURA, Jose Ignacio ROMANGNOLI, Gerard Michael RUMMERY, David Brent SEARS, Matthew David SPRUELL, James William Charles VANDYKE, Roman VINOKUR