Patents by Inventor Peter John Deacon Wickham
Peter John Deacon Wickham 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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Publication number: 20180000427Abstract: In a respiratory apparatus for treatment of sleep apnea and other disorders associated with an obstruction of a patient's airway and which uses an airflow signal, an obstruction index is generated which detects the flattening of the inspiratory portion of the airflow. The obstruction index is used to differentiate normal and obstructed breathing. The obstruction index is based upon different weighting factors applied to sections of the airflow signal thereby improving sensitivity to various types of respiration obstructions.Type: ApplicationFiled: September 13, 2017Publication date: January 4, 2018Inventor: Peter John Deacon Wickham
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Patent number: 9782133Abstract: In a respiratory apparatus for treatment of sleep apnea and other disorders associated with an obstruction of a patient's airway and which uses an airflow signal, an obstruction index is generated which detects the flattening of the inspiratory portion of the airflow. The obstruction index is used to differentiate normal and obstructed breathing. The obstruction index is based upon different weighting factors applied to sections of the airflow signal thereby improving sensitivity to various types of respiration obstructions.Type: GrantFiled: March 14, 2014Date of Patent: October 10, 2017Assignee: ResMed LimitedInventor: Peter John Deacon Wickham
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Publication number: 20140200476Abstract: In a respiratory apparatus for treatment of sleep apnea and other disorders associated with an obstruction of a patient's airway and which uses an airflow signal, an obstruction index is generated which detects the flattening of the inspiratory portion of the airflow. The obstruction index is used to differentiate normal and obstructed breathing. The obstruction index is based upon different weighting factors applied to sections of the airflow signal thereby improving sensitivity to various types of respiration obstructions.Type: ApplicationFiled: March 14, 2014Publication date: July 17, 2014Applicant: RESMED LIMITEDInventor: Peter John Deacon Wickham
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Publication number: 20120090610Abstract: A method and CPAP apparatus characterizes different mask systems, e.g., masks and hoses. The CPAP apparatus can be calibrated for different mask systems and hoses by including sensors that measure flow and pressure at a flow generator of the apparatus. When the generator is fitted to a new mask system, or any changes are made to an existing one, a method calibrates the generator for the mask system. The method includes determining air flow characteristics using flow measurements from a first test period when flow through the mask system is open, measuring or estimating pressure in the mask system during a second test period when flow through the mask system is blocked and determining air flow characteristics of the diffuser of the mask system using the air flow characteristics of the air delivery hose determined during the first period and the pressure measurements made during the second period.Type: ApplicationFiled: September 27, 2011Publication date: April 19, 2012Inventors: Gerard Michael O'Connor, John David Oates, Peter John Deacon Wickham, Nicola Frances Wickham
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Publication number: 20110307194Abstract: A method and a CPAP apparatus for characterizing different mask systems, e.g., masks and hoses, are provided. The apparatus can be calibrated for different mask systems and hoses by including sensors for measuring flow and pressure at a flow generator of the apparatus. When the flow generator is fitted to a new system, or changes are made to an existing system, mask or patient interface, and/or hose, a method of calibrating the flow generator is provided. The method includes determining air flow characteristics of the hose using flow measurements made during a first test period when flow through the system is open, measuring or estimating pressure in the system during a second test period when flow through the system is blocked, and determining air flow characteristics of the diffuser using the air first test period flow characteristics of the air delivery hose and the second test period pressure measurements.Type: ApplicationFiled: June 23, 2011Publication date: December 15, 2011Applicant: ResMed LimitedInventors: Peter John Deacon WICKHAM, Nicola Frances Wickham
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Patent number: 8056559Abstract: A method and a CPAP apparatus for characterizing mask systems provided. The CPAP apparatus can be calibrated by including sensors configured to measure flow and pressure. When the flow generator is fitted to a new or changed mask system, a method for calibrating the flow generator for the new or changed mask system. The method includes determining air flow characteristics using flow measurements made during a first test period when the flow through the mask system is open, measuring or estimating pressure in the mask system during a second test period when the flow through the mask system is blocked and determining air flow characteristics of the diffuser of the mask system using the air flow characteristics of the air delivery hose determined during the first test period and the pressure measurements made during the second test period.Type: GrantFiled: July 16, 2010Date of Patent: November 15, 2011Assignee: Resmed LimitedInventors: Gerard Michael O'Connor, John David Oates, Peter John Deacon Wickham, Nicola Frances Wickham, legal representative
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Patent number: 7987847Abstract: A method and a CPAP apparatus for characterizing different mask systems, e.g., masks and hoses, are provided. The apparatus can be calibrated for different mask systems and hoses by including sensors for measuring flow and pressure at a flow generator of the apparatus. When the flow generator is fitted to a new system, or changes are made to an existing system, mask or patient interface, and/or hose, a method of calibrating the flow generator is provided. The method includes determining air flow characteristics of the hose using flow measurements made during a first test period when flow through the system is open, measuring or estimating pressure in the system during a second test period when flow through the system is blocked, and determining air flow characteristics of the diffuser using the air first test period flow characteristics of the air delivery hose and the second test period pressure measurements.Type: GrantFiled: December 24, 2001Date of Patent: August 2, 2011Assignee: Resmed LimitedInventors: Peter John Deacon Wickham, Nicola Frances Wickham, legal representative
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Publication number: 20100275918Abstract: A method and a CPAP apparatus for characterizing a plurality of different mask systems, e.g., masks and hoses, are provided. The CPAP apparatus can be calibrated for different mask systems and hoses by including sensors configured to measure flow and pressure at a flow generator of the CPAP apparatus. When the flow generator is fitted to a new mask system, or any changes are made to an existing mask system, mask or patient interface and/or hose, a method for calibrating the flow generator for the new mask system, mask and/or hose is provided.Type: ApplicationFiled: July 16, 2010Publication date: November 4, 2010Inventors: Gerard Micheal O'Connor, John David Oates, Peter John Deacon Wickham, Nicola Frances Wickham
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Patent number: 7770579Abstract: A method and a CPAP apparatus for characterizing a plurality of different mask systems, e.g., masks and hoses, are provided. The CPAP apparatus can be calibrated for different mask systems and hoses by including sensors configured to measure flow and pressure at a flow generator of the CPAP apparatus. When the flow generator is fitted to a new mask system, or any changes are made to an existing mask system, mask or patient interface and/or hose, a method for calibrating the flow generator for the new mask system, mask and/or hose is provided.Type: GrantFiled: August 8, 2003Date of Patent: August 10, 2010Assignee: Resmed LimitedInventors: Gerard Michael O'Connor, John David Oates, Peter John Deacon Wickham, Nicola Frances Wickham, legal representative
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Publication number: 20100000535Abstract: An apparatus for supplying breathable gas includes a main housing, a sub-housing removably connected to the main housing, and a vent valve assembly provided to the sub-housing. The sub-housing has a gas flow path between a gas inlet and a gas outlet. The vent valve assembly includes a gas venting conduit in fluid communication with the gas flow path. The gas venting conduit is adapted to be selectively restricted by a cam abutting an exterior of the gas venting conduit, whereby a position of the cam is variable to vary gas passing through the gas venting conduit which varies a flow rate of gas leaving the gas outlet.Type: ApplicationFiled: June 30, 2009Publication date: January 7, 2010Applicant: ResMed LimitedInventors: Peter John Deacon Wickham, Alexander Virr, Ian Malcolm Smith, Muditha Pradeep Dantanarayana, Stanley Clark, Nicola Frances Wickham
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Patent number: 7571725Abstract: A sub-housing received within a housing of an apparatus for supplying breathable gas, includes a gas flow path between a gas inlet and a gas outlet and an impeller in fluid communication between the gas inlet and the gas outlet. The impeller is structured and configured to be releasably engaged with a shaft associated with an electric motor that is disposed exterior to the housing, whereby rotation of the shaft causes rotation of the impeller.Type: GrantFiled: November 10, 2004Date of Patent: August 11, 2009Assignee: ResMed LimitedInventors: Nicola Frances Wickham, legal representative, Alexander Virr, Ian Malcolm Smith, Muditha Pradeep Dantanarayana, Stanley Clark, Peter John Deacon Wickham
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Patent number: 6899100Abstract: A sub-housing received within a housing of an apparatus for supplying breathable gas, includes a gas flow path between a gas inlet and a gas outlet and an impeller in fluid communication between the gas inlet and the gas outlet. The impeller is structured and configured to be releasably engaged with a shaft associated with an electric motor that is disposed exterior to the housing, whereby rotation of the shaft causes rotation of the impeller.Type: GrantFiled: April 16, 2003Date of Patent: May 31, 2005Assignee: ResMed LimitedInventors: Nicola Frances Wickham, Alexander Virr, Ian Malcolm Smith, Muditha Pradeep Dantanarayana, Stanley Clark, Peter John Deacon Wickham
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Publication number: 20040118403Abstract: A method and a CPAP apparatus for characterizing a plurality of different mask systems, e.g., masks and hoses, are provided. The CPAP apparatus can be calibrated for different mask systems and hoses by including sensors configured to measure flow and pressure at a flow generator of the CPAP apparatus. When the flow generator is fitted to a new mask system, or any changes are made to an existing mask system, mask or patient interface and/or hose, a method for calibrating the flow generator for the new mask system, mask and/or hose is provided.Type: ApplicationFiled: August 8, 2003Publication date: June 24, 2004Inventors: Gerard Michael O'Connor, John David Oates, Peter John Deacon Wickham, Nicola Frances Wickham
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Publication number: 20040074495Abstract: A method and a CPAP apparatus (10) for characterizing a plurality of different mask systems (14), e.g., masks and hoses, are provided. The CPAP apparatus (10) can be calibrated for different mask systems (14) and hoses (16) by including sensors (13,15) configured to measure flow and pressure at a flow generator (12) of the CPAP apparatus (10). When the flow generator (12) is fitted to a new mask system (14), or any changes are made to an existing mask system (14), mask or patient interface (34) and/or hose (16), a method of calibrating the flow generator (12) for the new mask system (14), mask (34) and/or hose (16) is provided.Type: ApplicationFiled: November 6, 2003Publication date: April 22, 2004Inventors: Peter John Deacon Wickham, Nicola Frances Wickham
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Publication number: 20040000310Abstract: An apparatus (10) for supplying breathable gas is disclosed. The apparatus (10) includes a main housing (12), a sub-housing (14), having a gas flow path (28) between a gas inlet (16) and a gas outlet (18), a motive power source (22) within the main housing (12) and an impeller (30) within the sub-housing (14) in fluid communication between the gas inlet (16) and the gas outlet (18). The impeller (30) is adapted to releaseably engage the motive power source (22) external the gas flow path (28) and the sub-housing (14) is releasably connectable to said main housing.Type: ApplicationFiled: April 16, 2003Publication date: January 1, 2004Inventors: Peter John Deacon Wickham, Alexander Virr, Ian Malcolm Smith, Muditha Pradeep Dantanarayana, Stanley Clark
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Patent number: 6629528Abstract: An apparatus (10) for supplying breathable gas is disclosed. The apparatus (10) includes a main housing (12), a sub-housing (14), having a gas flow path (28) between a gas inlet (16) and a gas outlet (18), a motive power source (22) within the main housing (12) and an impeller (30) within the sub-housing (14) in fluid communication between the gas inlet (16) and the gas outlet (18). The impeller (30) is adapted to releaseably engage the motive power source (22) external the gas flow path (28) and the sub-housing (14) is releasably connectable to said main housing. Also disclosed is a method of cleaning, sterilising or disinfecting the gas flow path (28) of the breathable gas supply apparatus (10). The method of cleaning comprising the steps of removing the sub-housing (14) from the main housing (12) cleaning, sterilising, disinfecting or replacing the sub-housing (14) and connecting the sub-housing (14) to the main housing (12).Type: GrantFiled: August 20, 2001Date of Patent: October 7, 2003Assignee: ResMed LimitedInventors: Peter John Deacon Wickham, Alexander Virr, Ian Malcolm Smith, Muditha Pradeep Dantanarayana, Stanley Clark
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Patent number: 6603273Abstract: Methods and apparatus for the supply of non-invasive positive pressure ventilation by motor-driven blowers, and having fast acceleration between treatment pressures, are described. A blower (12) supplies treatment pressure of air or breathable gas to a patient mask (16) via a conduit (14) at a first pressure and at a second, higher pressure. The blower (12) receives its power from a power supply (22) and cascaded motor controller (20). The power supply (22) has the capacity to supply sufficient power for the first pressure to be achieved. A static capacitor (24), that is charged by the power supply (22), provides the energy to the blower (12) to achieve the second pressure, during which period the power supply (22) is effectively shut down.Type: GrantFiled: August 1, 2001Date of Patent: August 5, 2003Assignee: ResMed LimitedInventors: Peter John Deacon Wickham, Alexander Virr
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Patent number: 6526974Abstract: The pressure of breathable gas exiting a flow generator is controlled by adjusting the efficiency of the flow generator. In one embodiment, a baffle plate of a control element can restrict the open entry area of a motor driven turbine of the flow generator. In another embodiment, the degree of opening of the mouth of the flow generator inlet is automatically adjustable in response to the needs of the user, hence creating a pneumatic impedance, and which simultaneously controls, in the same manner, the impedance of the outlet of the device.Type: GrantFiled: August 22, 2000Date of Patent: March 4, 2003Inventors: John William Ernest Brydon, Peter John Deacon Wickham, Miroslav Bachak, Shane Douglas Hollis
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Patent number: 6357463Abstract: The present invention has been developed primarily for a flow diverting valve used in controlling the pressure and flow rate, and measuring the flow rate, of a breathable gas supplied to the airways of a patient by a breathable gas supply apparatus during, for example, nasal Continuous Positive Airway Pressure (CPAP) treatment of Obstructive Sleep Apnea (OSA) and ventilatory assistance treatments such as non-invasive positive pressure ventilation (NIPPV).Type: GrantFiled: June 21, 2000Date of Patent: March 19, 2002Assignee: ResMed LimitedInventors: Peter John Deacon Wickham, Ian Malcolm Smith, Denis Bullock, Patrick John McAuliffe
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Patent number: 6302105Abstract: An apparatus for supplying breathable gas wherein the apparatus includes a main housing, a sub-housing having a gas flow path between a gas inlet and a gas outlet, a power source within the main housing and an impeller within the sub-housing in fluid communication between the gas inlet and the gas outlet. The impeller is adapted to releasably engage the motive power source external the gas flow path and the sub-housing is releasably connectable to said main housing. Also disclosed is a method of cleaning, sterilising or disinfecting the gas flow path of the breathable gas supply apparatus. The method includes removing the sub-housing from the main housing, cleaning, sterilising, disinfecting or replacing the sub-housing and connecting the sub-housing to the main housing.Type: GrantFiled: March 16, 1999Date of Patent: October 16, 2001Assignee: ResMed LimitedInventors: Peter John Deacon Wickham, Alexander Virr, Ian Malcolm Smith, Muditha Pradeep Dantanarayana, Stanley Clark