Patents by Inventor Karthikeyan Selvarajan

Karthikeyan Selvarajan 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).

  • Publication number: 20150359986
    Abstract: A cushion assembly for use with a respiratory mask includes a bladder filled with the combination of a gel having a first indentation hardness and a gel having a second indentation hardness.
    Type: Application
    Filed: August 6, 2015
    Publication date: December 17, 2015
    Inventors: Christopher Scott SKIPPER, Enrico BRAMBILLA, Renee Frances FLOWER, Matthew David SPRUELL, Joshua Adam GUDIKSEN, Lee James VELISS, Melanie Lucia CARIOLA, Alicia Kristianne WELLS, Robin Garth HITCHCOCK, Karthikeyan SELVARAJAN, Fiona Catherine CARROLL, Scott Alexander HOWARD, Gregory Robert PEAKE, Michael John REID, Murray William LEE, Grant MOILER, Victor Eduardo SOLIS, Johannes NICKOL, Johann Sebastian BURZ, Achim BIENER, Bernd Christoph LANG, Teresa WANG, David Robert MEADOWS
  • Patent number: 9211398
    Abstract: A connector system for use with an apparatus that delivers a supply of pressurized breathable air to a patient includes an air delivery conduit including an auxiliary conduit. The air delivery conduit and auxiliary conduit have a first end and a second end. A connector is provided to at least one of the first and second ends. The connector includes an inner tubular wall and an outer tubular wall surrounding the inner tubular wall and being concentric with the inner tubular wall. The inner and outer tubular walls define first and second passages that are isolated from one another. One of the first and second passages is configured to communicate with the air delivery conduit and the other of the first and second passages is configured to communicate with the auxiliary conduit.
    Type: Grant
    Filed: May 22, 2006
    Date of Patent: December 15, 2015
    Assignee: ResMed Limited
    Inventors: Philip Rodney Kwok, Karthikeyan Selvarajan, James Morrison
  • Patent number: 9182062
    Abstract: A CPAP system includes a flow generator, a patient interface, an air delivery conduit that interconnects the flow generator and the patient interface, and a packaging arrangement including at least one storage facilitating member to allow storage of the air delivery conduit. The at least one storage facilitating member may be provided to the flow generator, a cradle, and/or the air delivery conduit.
    Type: Grant
    Filed: October 23, 2012
    Date of Patent: November 10, 2015
    Assignee: RESMED LIMITED
    Inventors: Philip Rodney Kwok, Bruce David Gregory, Karthikeyan Selvarajan, James Morrison
  • Publication number: 20150314097
    Abstract: A cushion for use with patient therapy may include a face contacting element having at least one portion including at least a first gel and a skin portion containing the first gel. The skin portion may be silicone based. The face contacting element may be substantially triangular, and at least one of the cheek regions and the lower region of the triangular face contacting element may include a concave section that curves inwardly towards the breathing chamber. The cushion may include first and second gels having one or more properties that are different from one another.
    Type: Application
    Filed: July 15, 2015
    Publication date: November 5, 2015
    Inventors: Philip Rodney KWOK, Zoran MILIJASEVIC, Karthikeyan SELVARAJAN, Gregory Robert PEAKE
  • Patent number: 9162034
    Abstract: A patient interface includes a sealing arrangement adapted to provide an effective seal with the patient's nose, an inlet conduit arrangement adapted to deliver breathable gas to the sealing arrangement, and a cover that substantially encloses the sealing arrangement and/or the inlet conduit arrangement.
    Type: Grant
    Filed: July 27, 2007
    Date of Patent: October 20, 2015
    Assignee: ResMed Limited
    Inventors: Lee James Veliss, Philip Rodney Kwok, Philip John Gunning, Robert Edward Henry, Gregory Robert Peake, Bruce David Gregory, Clive Solari, Scott Douglas Brackenreg, Karthikeyan Selvarajan
  • Publication number: 20150196726
    Abstract: A mask system for use between a patient and device to deliver a breathable gas to the patient includes a mouth cushion, a pair of nasal prongs, an elbow, and a headgear assembly. The mouth cushion is structured to sealingly engage around an exterior of a patient's mouth in use, and the pair of nasal prongs are structured to sealingly communicate with nasal passages of a patient's nose in use. The elbow delivers breathable gas to the patient. The headgear assembly maintains the mouth cushion and the nasal prongs in a desired position on the patient's face. The headgear assembly provides a substantially round crown strap that cups the parietal bone and occipital bone of the patient's head in use.
    Type: Application
    Filed: March 20, 2015
    Publication date: July 16, 2015
    Inventors: Christopher Scott SKIPPER, Alison OLDENBURG, Karthikeyan SELVARAJAN
  • Patent number: 9032955
    Abstract: A mask system for use between a patient and a device to deliver a breathable gas to the patient includes a mouth cushion, a pair of nasal prongs, an elbow, and a headgear assembly. The mouth cushion is structured to sealingly engage around an exterior of a patient's mouth in use, and the pair of nasal prongs are structured to sealingly communicate with nasal passages of a patient's nose in use. The elbow delivers breathable gas to the patient. The headgear assembly maintains the mouth cushion and the nasal prongs in a desired position on the patient's face. The headgear assembly provides a substantially round crown strap that cups the parietal bone and occipital bone of the patient's head in use.
    Type: Grant
    Filed: June 6, 2006
    Date of Patent: May 19, 2015
    Assignee: ResMed Limited
    Inventors: Steven John Lubke, Gregory Scott Smart, Rupert Christian Scheiner, Alison Oldenburg, James William Charles Vandyke, Christopher Scott Skipper, Michael John Reid, Timothy Shawn Nelson, Philip Rodney Kwok, Karthikeyan Selvarajan
  • Publication number: 20150075533
    Abstract: A mask system including a frame module and a cushion module provided to the frame module and adapted to form a seal with the patient's face. The cushion module includes a main body defining a breathing chamber and adapted to interface with the frame module and a cushion adapted to form a seal with the patient's face. The main body and the cushion are comolded with one another.
    Type: Application
    Filed: November 26, 2014
    Publication date: March 19, 2015
    Inventors: Scott Alexander HOWARD, Karthikeyan SELVARAJAN, Christopher Scott SKIPPER, Joel Edward GIBSON, Angelene Marie OZOLINS, Michael John REID
  • Patent number: 8950403
    Abstract: A mask system including a frame module and a cushion module provided to the frame module and adapted to form a seal with the patient's face. The cushion module includes a main body defining a breathing chamber and adapted to interface with the frame module and a cushion adapted to form a seal with the patient's face. The main body and the cushion are comolded with one another.
    Type: Grant
    Filed: March 4, 2009
    Date of Patent: February 10, 2015
    Assignee: ResMed Limited
    Inventors: Scott Alexander Howard, Karthikeyan Selvarajan, Christopher Scott Skipper, Michael John Reid
  • Patent number: 8939147
    Abstract: Components of a CPAP or other patient ventilation apparatus have a remotely-readable identification tag encoded with component identification data. The flow generator controller is programmed to receive data derived from the identification tag from a tag reader, and to adapt functions of the flow controller to coordinate with the component.
    Type: Grant
    Filed: February 22, 2011
    Date of Patent: January 27, 2015
    Assignee: Resmed Limited
    Inventors: Robert Edward Henry, Karthikeyan Selvarajan, Philip Rodney Kwok, Philip John Gunning, John David Oates
  • Patent number: 8915251
    Abstract: A headgear assembly for a mask system includes a two-dimensional first headgear section and a two-dimensional second headgear section, wherein the two-dimensional first and second headgear sections are attached to one another to form a three-dimensional anatomically-shaped headgear assembly.
    Type: Grant
    Filed: February 17, 2012
    Date of Patent: December 23, 2014
    Assignee: ResMed Limited
    Inventors: Steven John Lubke, Gregory Scott Smart, Rupert Christian Scheiner, Alison Oldenburg, James William Charles Vandyke, Christopher Scott Skipper, Michael John Reid, Timothy Shawn Nelson, Philip Rodney Kwok, Karthikeyan Selvarajan
  • Publication number: 20140366877
    Abstract: A CPAP or other ventilation system includes a mask, a flow generator, a positive or high pressure line to provide positive or high pressure air from the flow generator to the mask and a vacuum or return line provided to actively extract exhaled gas from the breathing chamber and/or the air delivery conduit of the mask. The vacuum or return line includes a vent outlet preferably positioned remote from the mask.
    Type: Application
    Filed: August 27, 2014
    Publication date: December 18, 2014
    Inventors: Karthikeyan SELVARAJAN, Philip Rodney KWOK, Barton John KENYON, Bruce David GREGORY, Nicholas Jerome REED, Christopher Kingsley BLUNSDEN
  • Patent number: 8844529
    Abstract: A CPAP or other ventilation system includes a mask, a flow generator, a positive or high pressure line to provide positive or high pressure air from the flow generator to the mask and a vacuum or return line provided to actively extract exhaled gas from the breathing chamber and/or the air delivery conduit of the mask. The vacuum or return line includes a vent outlet preferably positioned remote from the mask.
    Type: Grant
    Filed: March 29, 2006
    Date of Patent: September 30, 2014
    Assignee: ResMed Limited
    Inventors: Karthikeyan Selvarajan, Philip Rodney Kwok, Barton John Kenyon, Bruce David Gregory, Nicholas Jerome Reed, Christopher Kingsley Blunsden
  • Publication number: 20140283836
    Abstract: A method of operating a device for treating sleep disordered breathing (SDB), wherein the device provides continuous positive airway pressure during sleep, includes determining whether treatment pressure at the patient interface is below a desired value, in response to the determining, increasing pressure generated by the flow generator, in response to the increasing, making a determination that the increase in flow generator pressure has resulted in less than a desired increase in treatment pressure at the patient interface, and in response to the determination, reducing or inhibiting further increase of the flow generator pressure.
    Type: Application
    Filed: June 6, 2014
    Publication date: September 25, 2014
    Inventors: Philip Rodney KWOK, Ron RICHARD, Karthikeyan SELVARAJAN, Glenn RICHARDS, Nicholas Jerome REED, Larry PUCKERIDGE
  • Publication number: 20140261434
    Abstract: A system of breathing arrangements for delivering breathable gas to a patient includes at least first and second cushion components, e.g., full-face, nasal, nasal prongs, nose tip, and/or a combination of any of the above, including a nasal or full-face cushion and nasal prongs/nozzles combination, etc., that are different from one another in at least one aspect, and a common frame assembly configured to support each of the first and second cushion components. Various embodiments are directed to a full-face or nasal mask used with a frame having lateral connector portions having a stiffening member. The mask assembly may include a nose height adjustment device for the height of the cushion, or a cushion adjustment member by which the position of the cushion may be adjusted relative to the frame. The mask assembly may include a chin strap assembly.
    Type: Application
    Filed: May 28, 2014
    Publication date: September 18, 2014
    Applicant: ResMed Limited
    Inventors: Eva NG, Robert Edward HENRY, Philip Rodney KWOK, Karthikeyan SELVARAJAN
  • Patent number: 8789526
    Abstract: A method of operating a device for treating sleep disordered breathing (SDB), wherein the device provides continuous positive airway pressure during sleep, includes determining whether treatment pressure at the patient interface is below a desired value, in response to the determining, increasing pressure generated by the flow generator, in response to the increasing, making a determination that the increase in flow generator pressure has resulted in less than a desired increase in treatment pressure at the patient interface, and in response to the determination, reducing or inhibiting further increase of the flow generator pressure.
    Type: Grant
    Filed: June 14, 2006
    Date of Patent: July 29, 2014
    Assignee: ResMed Limited
    Inventors: Philip Rodney Kwok, Ron Richard, Karthikeyan Selvarajan, Glenn Richards, Nicholas Jerome Reed, Larry Puckeridge
  • Patent number: 8701668
    Abstract: A nasal assembly includes a patient interface including a hollow body that defines an air chamber and a pair of nozzles supported by the hollow body. Each nozzle includes a conical tip structured to sealingly communicate with a respective nasal passage of a patient's nose in use. Headgear is provided to the patient interface so as to maintain the patient interface in a desired position on the patient's face in use. The hollow body is bendable to adjust a position of the nozzles in use.
    Type: Grant
    Filed: October 12, 2006
    Date of Patent: April 22, 2014
    Assignee: ResMed Limited
    Inventors: Karthikeyan Selvarajan, Philip Rodney Kwok, Philip John Gunning
  • Publication number: 20140083431
    Abstract: A respiratory mask, a mould for a respiratory mask, as well as to a method for producing a respiratory mask are disclosed, in which manufacturability and usability of respiratory masks are improved. A respiratory mask is disclosed for administering a breathable gas to a patient, the respiratory mask comprising a first component formed from a flexible material and a second component formed from a material that is more rigid than the flexible material, wherein the first component is formed onto the second component by an overmoulding process.
    Type: Application
    Filed: December 2, 2013
    Publication date: March 27, 2014
    Applicant: ResMed R&D Germany GmbH
    Inventors: Johann Sebastian BURZ, Achim BIENER, Bernd Christoph LANG, Philip Rodney KWOK, Karthikeyan SELVARAJAN, Robert Edward HENRY
  • Patent number: 8596273
    Abstract: A respiratory mask, a mould for a respiratory mask, as well as to a method for producing a respiratory mask are disclosed, in which manufacturability and usability of respiratory masks are improved. A respiratory mask is disclosed for administering a breathable gas to a patient, the respiratory mask comprising a first component formed from a flexible material and a second component formed from a material that is more rigid than the flexible material, wherein the first component is formed onto the second component by an overmoulding process.
    Type: Grant
    Filed: July 19, 2006
    Date of Patent: December 3, 2013
    Assignees: ResMed R&D Germany GmbH, ResMed Limited
    Inventors: Johann S. Burz, Achim Biener, Bernd Christoph Lang, Philip Rodney Kwok, Karthikeyan Selvarajan, Robert Edward Henry
  • Publication number: 20130306066
    Abstract: An elbow assembly for a mask system includes an elbow including a slot and a port, an anti-asphyxia valve adapted to be received within the slot and including a flap portion adapted to selectively close the port depending on the presence of pressurized gas, and a support member to secure the anti-asphyxia valve to the elbow. The support member includes a slot that is adapted to interlock with a protrusion provided to the anti-asphyxia valve.
    Type: Application
    Filed: July 25, 2013
    Publication date: November 21, 2013
    Applicant: ResMed Limited
    Inventors: Karthikeyan SELVARAJAN, Christopher Scott SKIPPER, Joshua Adam GUDIKSEN, Steven John LUBKE, Alison OLDENBURG, Murray William LEE