Patents by Inventor Chun Man Alan Leung

Chun Man Alan Leung 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: 20220016405
    Abstract: Implantable physiological shunt systems and related fluid flow control devices and accessories for use therewith. Devices, systems and methods relating to implantable medical fluid flow control devices, rotors and magnets with increased resistance to inadvertent setting changes. Devices, systems and methods relating implantable medical fluid flow control devices, rotors and magnets which provide improved magnetic coupling to fluid flow control device accessories such as adjustment tools.
    Type: Application
    Filed: September 30, 2021
    Publication date: January 20, 2022
    Applicant: MEDTRONIC XOMED, INC.
    Inventors: W. Jeff Bertrand, Lori Speckman, Manfred Karl Luedi, Chun Man Alan Leung, Lawrence Hampton, Deep Shah
  • Patent number: 11167117
    Abstract: Implantable physiological shunt systems and related fluid flow control devices and accessories for use therewith. Devices, systems and methods relating to implantable medical fluid flow control devices, rotors and magnets with increased resistance to inadvertent setting changes. Devices, systems and methods relating implantable medical fluid flow control devices, rotors and magnets which provide improved magnetic coupling to fluid flow control device accessories such as adjustment tools.
    Type: Grant
    Filed: July 19, 2019
    Date of Patent: November 9, 2021
    Assignee: Medtronic Xomed, Inc.
    Inventors: W. Jeff Bertrand, Lori Speckman, Manfred Karl Luedi, Chun Man Alan Leung, Lawrence Hampton, Deep Shah
  • Patent number: 10512762
    Abstract: An implantable medical device is disclosed that includes a valve seat and a valve member movable with respect to the valve seat. An adjustment circuit assembly includes a resistive element that is coupled to the valve member and operable to position the valve member relative to the valve seat so as to alter the pressure setting in response to a current applied to the resistive element.
    Type: Grant
    Filed: March 8, 2016
    Date of Patent: December 24, 2019
    Assignee: Medtronic Xomed, Inc.
    Inventors: William Jeffrey Bertrand, Robert K. Vaccaro, Chun Man Alan Leung, Michael Ayoub, Pierre Jaquier, Laetitia Mayor, Thomas Junker, Guillaume Schmit
  • Publication number: 20190336736
    Abstract: Implantable physiological shunt systems and related fluid flow control devices and accessories for use therewith. Devices, systems and methods relating to implantable medical fluid flow control devices, rotors and magnets with increased resistance to inadvertent setting changes. Devices, systems and methods relating implantable medical fluid flow control devices, rotors and magnets which provide improved magnetic coupling to fluid flow control device accessories such as adjustment tools.
    Type: Application
    Filed: July 19, 2019
    Publication date: November 7, 2019
    Applicant: MEDTRONIC XOMED, INC.
    Inventors: W. Jeff Bertrand, Lori Speckman, Manfred Karl Luedi, Chun Man Alan Leung, Lawrence Hampton, Deep Shah
  • Patent number: 10369335
    Abstract: Implantable physiological shunt systems and related fluid flow control devices and accessories for use therewith. Devices, systems and methods relating to implantable medical fluid flow control devices, rotors and magnets with increased resistance to inadvertent setting changes. Devices, systems and methods relating implantable medical fluid flow control devices, rotors and magnets which provide improved magnetic coupling to fluid flow control device accessories such as adjustment tools.
    Type: Grant
    Filed: February 23, 2016
    Date of Patent: August 6, 2019
    Assignee: Medtronic Xomed, Inc.
    Inventors: W. Jeff Bertrand, Lori Speckman, Manfred Karl Luedi, Chun Man Alan Leung, Lawrence Hampton, Deep Shah
  • Patent number: 9931493
    Abstract: A magnetic article with a corrosion resistant barrier formed from a poly (tetrafluoro-p-xylene) conformal coating or from a parylene conformal coating having a melting point of at least about 430° C. and a moisture vapor transmission less than about 0.5 g-mm/m2/day at 90% RH and 37° C., the conformal coating being covered with a polysulfone thermoplastic overlayer.
    Type: Grant
    Filed: January 21, 2016
    Date of Patent: April 3, 2018
    Assignee: MEDTRONIC XOMED, INC.
    Inventors: Chun Man Alan Leung, William Jeffrey Bertrand, Drew Powell Amery, Lori C. Speckman, Thomas J. Sierocuk
  • Patent number: 9775974
    Abstract: A magnetic article with a corrosion resistant barrier formed from a poly(tetrafluoro-p-xylene) conformal coating or from a parylene conformal coating having a melting point of at least about 430° C. and a moisture vapor transmission less than about 0.5 g-mm/m2/day at 90% RH and 37° C., the conformal coating being covered with a polysulfone thermoplastic overlayer.
    Type: Grant
    Filed: January 22, 2015
    Date of Patent: October 3, 2017
    Assignee: MEDTRONIC XOMED, INC.
    Inventors: Chun Man Alan Leung, William Jeffrey Bertrand, Drew Powell Amery, Lori C. Speckman, Thomas J. Sierocuk
  • Publication number: 20170056631
    Abstract: A magnetic article with a corrosion resistant barrier formed from a poly (tetrafluoro-p-xylene) conformal coating or from a parylene conformal coating having a melting point of at least about 430° C. and a moisture vapor transmission less than about 0.5 g-mm/m2/day at 90% RH and 37° C., the conformal coating being covered with a polysulfone thermoplastic overlayer.
    Type: Application
    Filed: January 21, 2016
    Publication date: March 2, 2017
    Inventors: Chun Man Alan Leung, William Jeffrey Bertrand, Drew Powell Amery, Lori C. Speckman, Thomas J. Sierocuk
  • Publication number: 20160213898
    Abstract: A magnetic article with a corrosion resistant barrier formed from a poly(tetrafluoro-p-xylene) conformal coating or from a parylene conformal coating having a melting point of at least about 430° C. and a moisture vapor transmission less than about 0.5 g-mm/m2/day at 90% RH and 37° C., the conformal coating being covered with a polysulfone thermoplastic overlayer.
    Type: Application
    Filed: January 22, 2015
    Publication date: July 28, 2016
    Inventors: Chun Man Alan Leung, William Jeffrey Bertrand, Drew Powell Amery, Lori C. Speckman, Thomas J. Sierocuk
  • Publication number: 20160184563
    Abstract: An implantable medical device is disclosed that includes a valve seat and a valve member movable with respect to the valve seat. An adjustment circuit assembly includes a resistive element that is coupled to the valve member and operable to position the valve member relative to the valve seat so as to alter the pressure setting in response to a current applied to the resistive element.
    Type: Application
    Filed: March 8, 2016
    Publication date: June 30, 2016
    Applicant: Medtronic Xomed, Inc.
    Inventors: William Jeffrey Bertrand, Robert K. Vaccaro, Chun Man Alan Leung, Michael Ayoub, Pierre Jaquier, Laetitia Mayor, Thomas Junker, Guillaume Schmit
  • Publication number: 20160166813
    Abstract: Implantable physiological shunt systems and related fluid flow control devices and accessories for use therewith. Devices, systems and methods relating to implantable medical fluid flow control devices, rotors and magnets with increased resistance to inadvertent setting changes. Devices, systems and methods relating implantable medical fluid flow control devices, rotors and magnets which provide improved magnetic coupling to fluid flow control device accessories such as adjustment tools.
    Type: Application
    Filed: February 23, 2016
    Publication date: June 16, 2016
    Applicant: MEDTRONIC XOMED, INC.
    Inventors: W. Jeff Bertrand, Lori Speckman, Manfred Karl Luedi, Chun Man Alan Leung, Lawrence Hampton, Deep Shah
  • Patent number: 9302082
    Abstract: An implantable medical device is disclosed that includes a valve seat and a valve member movable with respect to the valve seat. An adjustment circuit assembly includes a resistive element that is coupled to the valve member and operable to position the valve member relative to the valve seat so as to alter the pressure setting in response to a current applied to the resistive element.
    Type: Grant
    Filed: October 30, 2012
    Date of Patent: April 5, 2016
    Assignee: Medtronic Xomed, Inc.
    Inventors: William Jeffrey Bertrand, Robert K. Vaccaro, Chun Man Alan Leung, Michael Ayoub, Pierre Jaquier, Laetitia Mayor, Thomas Junker, Guillaume Schmit
  • Patent number: 9295826
    Abstract: Implantable physiological shunt systems and related fluid flow control devices and accessories for use therewith. Devices, systems and methods relating to implantable medical fluid flow control devices, rotors and magnets with increased resistance to inadvertent setting changes. Devices, systems and methods relating implantable medical fluid flow control devices, rotors and magnets which provide improved magnetic coupling to fluid flow control device accessories such as adjustment tools.
    Type: Grant
    Filed: March 14, 2013
    Date of Patent: March 29, 2016
    Assignee: Medtronic Xomed, Inc.
    Inventors: W. Jeff Bertrand, Lori Speckman, Manfred Karl Luedi, Chun Man Alan Leung, Lawrence Hampton, Deep Shah
  • Publication number: 20130345646
    Abstract: Implantable physiological shunt systems and related fluid flow control devices and accessories for use therewith. Devices, systems and methods relating to implantable medical fluid flow control devices, rotors and magnets with increased resistance to inadvertent setting changes. Devices, systems and methods relating implantable medical fluid flow control devices, rotors and magnets which provide improved magnetic coupling to fluid flow control device accessories such as adjustment tools.
    Type: Application
    Filed: March 14, 2013
    Publication date: December 26, 2013
    Applicant: MEDTRONIC XOMED, INC
    Inventors: W. Jeff Bertrand, Lori Speckman, Manfred Karl Luedi, Chun Man Alan Leung, Lawrence Hampton, Deep Shah
  • Patent number: 8298168
    Abstract: An implantable medical device is disclosed that includes a valve seat and a valve member movable with respect to the valve seat. An adjustment circuit assembly includes a resistive element that is coupled to the valve member and operable to position the valve member relative to the valve seat so as to alter the pressure setting in response to a current applied to the resistive element. A reading circuit assembly includes an antenna coil, a sensing coil and a member moveable with respect to the sensing coil, the member configured to alter a resonant frequency of the reading circuit assembly as a function of a position of the member with respect to the sensing coil.
    Type: Grant
    Filed: January 27, 2011
    Date of Patent: October 30, 2012
    Assignee: Medtronic Xomed, Inc.
    Inventors: William Jeffrey Bertrand, Robert K. Vaccaro, Chun Man Alan Leung, Michael Ayoub, Pierre Jaquier, Laetitia Mayor, Thomas Junker, Guillaume Schmit
  • Publication number: 20120197177
    Abstract: An implantable medical device is disclosed that includes a valve seat and a valve member movable with respect to the valve seat. An adjustment circuit assembly includes a resistive element that is coupled to the valve member and operable to position the valve member relative to the valve seat so as to alter the pressure setting in response to a current applied to the resistive element.
    Type: Application
    Filed: January 27, 2011
    Publication date: August 2, 2012
    Applicant: MEDTRONIC XOMED, INC.
    Inventors: William Jeffrey Bertrand, Robert K. Vaccaro, Chun Man Alan Leung, Michael Ayoub, Pierre Jaquier, Laetitia Mayor, Thomas Junker, Guillaume Schmit