Patents by Inventor Michael K. Gunaratnam
Michael K. Gunaratnam 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: 9808589Abstract: A respiratory mask assembly includes a rigid mask frame and a cushion. A clip secures the cushion to the frame.Type: GrantFiled: February 10, 2014Date of Patent: November 7, 2017Assignee: RESMED LIMITEDInventors: Michael K Gunaratnam, Gregory S Smart, Philip R Kwok
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Patent number: 9592359Abstract: A respiratory mask assembly includes a respiratory mask including a mask shell and a mask cushion, a forehead support adjustably coupled to the mask, and an angular adjustment member. The forehead support includes a joining member provided to the mask shell and a cushion frame pivotally mounted to the joining member. The cushion frame is adapted to be selectively locked against pivotal movement in at least three predetermined angular positions relative to the joining member by a tongue and slot arrangement. The angular adjustment member allows relative angular adjustment between the cushion frame and the joining member. The angular adjustment member includes a pair of flexible arms that are adapted to be flexed towards one another to disengage the tongue from a respective one of the slots, and releasing the flexible arms allows the flexible arms to resiliently flex away from one another to engage the tongue and the respective slot.Type: GrantFiled: May 14, 2012Date of Patent: March 14, 2017Assignee: ResMed LimitedInventors: Philip R. Kwok, Michael K. Gunaratnam, Perry D. Lithgow, Jonathan P. Harrison, Jonathan L. Liston, Robert S. Matchett, Robert E. Styles
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Patent number: 9072853Abstract: A forehead pad for use in a respiratory mask with a forehead support, which includes a base portion to contact a user's forehead, a support post connected to the base portion, and a head adapted to connect the support post to a forehead support. A pair of forehead pads may be joined with a connector.Type: GrantFiled: November 15, 2010Date of Patent: July 7, 2015Assignee: ResMed LimitedInventors: Bernd Christoph Lang, Timothy Tsun-Fai Fu, Perry David Lithgow, Memduh Guney, Joanne Elizabeth Drew, Martin Bechtel, Achim Biener, Michael K. Gunaratnam, Aaron Samuel Davidson, Milind Chandrakant Raje
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Patent number: 8985117Abstract: A nasal assembly for delivering breathable gas to a patient includes a frame having an integrally formed first connector portion. A nozzle assembly includes a gusset or base portion and a pair of nozzles. At least one inlet conduit is structured to deliver breathable gas into the frame and nozzle assembly for breathing by the patient. A pair of second connector portions are removably and rotatably connected to respective first connector portions of the frame and are in communication with respective inlet conduits, e.g., directly or via angle connectors. A headgear assembly is removably connected to the pair of second connector portions and/or the angle connectors so as to maintain the frame and the nozzle assembly in a desired adjusted position on the patient's face.Type: GrantFiled: September 14, 2012Date of Patent: March 24, 2015Assignee: ResMed LimitedInventors: Michael K. Gunaratnam, Philip R. Kwok, Robin G. Hitchcock, Lee J. Veliss, Memduh Guney, Richard Sokolov, Perry D. Lithgow, Donald Darkin, Susan R. Lynch
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Patent number: 8978653Abstract: A mask system for delivering air to a user includes a suspension mechanism to allow relative movement between a face-contacting cushion and a mask shell. The suspension mechanism also provides a predetermined force to the cushion that is a function of mask pressure, displacement of the cushion or both.Type: GrantFiled: May 9, 2006Date of Patent: March 17, 2015Assignee: ResMed LimitedInventors: Robert H. Frater, Joanne Drew, Michael K. Gunaratnam
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Patent number: 8667965Abstract: A respiratory mask assembly includes a rigid mask frame and a cushion. A clip secures the cushion to the frame.Type: GrantFiled: December 19, 2008Date of Patent: March 11, 2014Assignee: RedMed LimitedInventors: Michael K. Gunaratnam, Gregory S. Smart, Philip R. Kwok
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Patent number: 8567402Abstract: Mask ports 180 for attaching supplemental oxygen tubes 510 or measurement devices to a respiratory mask are downwardly directed and recessed into the base 110 of the mask frame 100. The ports may comprise a pair of downwardly extending tubular spigots 185 each housed in a respective recess 190 in the base 110, with a shallow bridging recess 290 therebetween for receiving a bridging piece 300 of a closure cap 280.Type: GrantFiled: January 21, 2010Date of Patent: October 29, 2013Assignee: ResMed LimitedInventors: Michael K. Gunaratnam, Amal Amarasinghe
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Patent number: 8439039Abstract: A respiratory mask includes a mask shell defining an interior of the respiratory mask and a gas washout vent passage having an inlet forming part of the mask shell and in fluid communication with the interior and an outlet in fluid communication with atmosphere. The mask shell includes a tubular mask inlet adapted to connect to a breathable gas supply conduit. The outlet includes an interior surface that forms a smooth prolongation with an adjacent exterior surface of the mask shell, and the outlet is adapted to direct washout gas in a direction substantially parallel to a longitudinal axis of the mask inlet and away from the mask inlet. The mask shell includes a body portion and a cap portion.Type: GrantFiled: August 24, 2011Date of Patent: May 14, 2013Assignee: ResMed LimitedInventors: Michael K. Gunaratnam, Joanne E. Drew, Geoffrey Crumblin, Phillip Jenkinson, Susan Robyn Lynch
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Patent number: 8424530Abstract: A nasal assembly for delivering breathable gas to a patient includes a frame having an integrally formed first connector portion. A nozzle assembly includes a gusset or base portion and a pair of nozzles. At least one inlet conduit is structured to deliver breathable gas into the frame and nozzle assembly for breathing by the patient. A pair of second connector portions are removably and rotatably connected to respective first connector portions of the frame and are in communication with respective inlet conduits, e.g., directly or via angle connectors. A headgear assembly is removably connected to the pair of second connector portions and/or the angle connectors so as to maintain the frame and the nozzle assembly in a desired adjusted position on the patient's face.Type: GrantFiled: March 7, 2011Date of Patent: April 23, 2013Assignee: ResMed LimitedInventors: Michael K. Gunaratnam, Philip R. Kwok, Robin G. Hitchcock, Lee J. Veliss, Memduh Guney, Richard Sokolov, Perry D. Lithgow, Donald Darkin, Susan R. Lynch
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Publication number: 20130008447Abstract: A nasal assembly for delivering breathable gas to a patient includes a frame having an integrally formed first connector portion. A nozzle assembly includes a gusset or base portion and a pair of nozzles. At least one inlet conduit is structured to deliver breathable gas into the frame and nozzle assembly for breathing by the patient. A pair of second connector portions are removably and rotatably connected to respective first connector portions of the frame and are in communication with respective inlet conduits, e.g., directly or via angle connectors. A headgear assembly is removably connected to the pair of second connector portions and/or the angle connectors so as to maintain the frame and the nozzle assembly in a desired adjusted position on the patient's face.Type: ApplicationFiled: September 14, 2012Publication date: January 10, 2013Applicant: ResMed LimitedInventors: Michael K. GUNARATNAM, Philip R. Kwok, Robin G. Hitchcock, Lee J. Veliss, Memduh Guney, Richard Sokolov, Perry D. Lithgow, Donald Darkin, Susan R. Lynch
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Patent number: 8312883Abstract: A nasal assembly for delivering breathable gas to a patient includes a frame having an integrally formed first connector portion. A nozzle assembly includes a gusset or base portion and a pair of nozzles. At least one inlet conduit is structured to deliver breathable gas into the frame and nozzle assembly for breathing by the patient. A pair of second connector portions are removably and rotatably connected to respective first connector portions of the frame and are in communication with respective inlet conduits, e.g., directly or via angle connectors. A headgear assembly is removably connected to the pair of second connector portions and/or the angle connectors so as to maintain the frame and the nozzle assembly in a desired adjusted position on the patient's face.Type: GrantFiled: December 31, 2007Date of Patent: November 20, 2012Assignee: Resmed LimitedInventors: Michael K. Gunaratnam, Philip R. Kwok, Robin G. Hitchcock, Lee J. Veliss, Memduh Guney, Richard Sokolov, Perry D. Lithgow, Donald Darkin, Susan R. Lynch
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Patent number: 8312881Abstract: A nasal assembly for delivering breathable gas to a patient includes a frame having an integrally formed first connector portion. A nozzle assembly includes a gusset or base portion and a pair of nozzles. At least one inlet conduit is structured to deliver breathable gas into the frame and nozzle assembly for breathing by the patient. A pair of second connector portions are removably and rotatably connected to respective first connector portions of the frame and are in communication with respective inlet conduits, e.g., directly or via angle connectors. A headgear assembly is removably connected to the pair of second connector portions and/or the angle connectors so as to maintain the frame and the nozzle assembly in a desired adjusted position on the patient's face.Type: GrantFiled: December 27, 2007Date of Patent: November 20, 2012Assignee: Resmed LimitedInventors: Michael K. Gunaratnam, Philip R. Kwok, Robin G. Hitchcock, Lee J. Veliss, Memduh Guney, Richard Sokolov, Perry D. Lithgow, Donald Darkin, Susan R. Lynch
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Patent number: 8286636Abstract: A nasal assembly for delivering breathable gas to a patient includes a frame having an integrally formed first connector portion. A nozzle assembly includes a gusset or base portion and a pair of nozzles. At least one inlet conduit is structured to deliver breathable gas into the frame and nozzle assembly for breathing by the patient. A pair of second connector portions are removably and rotatably connected to respective first connector portions of the frame and are in communication with respective inlet conduits, e.g., directly or via angle connectors. A headgear assembly is removably connected to the pair of second connector portions and/or the angle connectors so as to maintain the frame and the nozzle assembly in a desired adjusted position on the patient's face.Type: GrantFiled: January 4, 2008Date of Patent: October 16, 2012Assignee: Resmed LimitedInventors: Michael K. Gunaratnam, Philip R. Kwok, Robin G. Hitchcock, Lee J. Veliss, Memduh Guney, Richard Sokolov, Perry D. Lithgow, Donald Darkin, Susan R. Lynch
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Publication number: 20120222681Abstract: A respiratory mask assembly includes a respiratory mask including a mask shell and a mask cushion, a forehead support adjustably coupled to the mask, and an angular adjustment member. The forehead support includes a joining member provided to the mask shell and a cushion frame pivotally mounted to the joining member. The cushion frame is adapted to be selectively locked against pivotal movement in at least three predetermined angular positions relative to the joining member by a tongue and slot arrangement. The angular adjustment member allows relative angular adjustment between the cushion frame and the joining member. The angular adjustment member includes a pair of flexible arms that are adapted to be flexed towards one another to disengage the tongue from a respective one of the slots, and releasing the flexible arms allows the flexible arms to resiliently flex away from one another to engage the tongue and the respective slot.Type: ApplicationFiled: May 14, 2012Publication date: September 6, 2012Applicant: ResMed LimitedInventors: Philip R. KWOK, Michael K. Gunaratnam, Perry D. Lithgow, Jonathan P. Harrison, Jonathan L. Liston, Robert S. Matchett, Robert E. Styles
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Publication number: 20120204869Abstract: A connector arrangement joining a respiratory mask and headgear is adapted for single-handed disengagement by the patient. A first, rigid connector part is formed into the rigid mask frame, with a mating second connector attached to a strap of the headgear. The connectors are held away from the patient's face by the connection to the mask frame.Type: ApplicationFiled: April 25, 2012Publication date: August 16, 2012Applicant: ResMed LimitedInventors: Michael K. Gunaratnam, Philip R. Kwok
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Patent number: 8186352Abstract: A nasal assembly for delivering breathable gas to a patient includes a frame having an integrally formed first connector portion. A nozzle assembly includes a gusset or base portion and a pair of nozzles. At least one inlet conduit is structured to deliver breathable gas into the frame and nozzle assembly for breathing by the patient. A pair of second connector portions are removably and rotatably connected to respective first connector portions of the frame and are in communication with respective inlet conduits, e.g., directly or via angle connectors. A headgear assembly is removably connected to the pair of second connector portions and/or the angle connectors so as to maintain the frame and the nozzle assembly in a desired adjusted position on the patient's face.Type: GrantFiled: December 19, 2007Date of Patent: May 29, 2012Assignee: ResMed LimitedInventors: Michael K. Gunaratnam, Philip R. Kwok, Robin G. Hitchcock, Lee J. Veliss, Memduh Guney, Richard Sokolov, Perry D. Lithgow, Donald Darkin, Susan R. Lynch
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Publication number: 20120048276Abstract: A respiratory mask includes a mask shell defining an interior of the respiratory mask and a gas washout vent passage having an inlet forming part of the mask shell and in fluid communication with the interior and an outlet in fluid communication with atmosphere. The mask shell includes a tubular mask inlet adapted to connect to a breathable gas supply conduit. The outlet includes an interior surface that forms a smooth prolongation with an adjacent exterior surface of the mask shell, and the outlet is adapted to direct washout gas in a direction substantially parallel to a longitudinal axis of the mask inlet and away from the mask inlet. The mask shell includes a body portion and a cap portion.Type: ApplicationFiled: August 24, 2011Publication date: March 1, 2012Applicant: ResMed LimitedInventors: Michael K. Gunaratnam, Joanne E. Drew, Geoffrey Crumblin, Phillip Jenkinson, Susan R. Lynch
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Patent number: D651303Type: GrantFiled: December 12, 2007Date of Patent: December 27, 2011Assignee: ResMed LimitedInventors: Michael K. Gunaratnam, Philip R. Kwok, Robin G. Hitchcock, Lee J. Veliss, Memduh Guney, Richard Sokolov, Perry D. Lithgow, Donald Darkin, Susan R. Lynch, Rachael E. Moore
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Patent number: D656607Type: GrantFiled: June 8, 2009Date of Patent: March 27, 2012Assignee: ResMed LimitedInventors: Michael K. Gunaratnam, Philip R. Kwok, Robin G. Hitchcock, Lee J. Veliss, Memduh Guney, Richard Sokolov, Perry D. Lithgow, Donald Darkin, Susan R. Lynch, Rachael E. Moore
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Patent number: D800299Type: GrantFiled: February 14, 2012Date of Patent: October 17, 2017Assignee: RESMED LIMITEDInventors: Michael K. Gunaratnam, Philip R. Kwok, Robin G. Hitchcock, Lee J. Veliss, Memduh Guney, Richard Sokolov, Perry D. Lithgow, Donald Darkin, Susan R. Lynch, Rachael E. Moore