Patents by Inventor Arvin Chang

Arvin Chang 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: 20200315665
    Abstract: A method of positioning an external adjustment device relative to a patient includes placing a magnetic viewing sheet adjacent to a patient. and identifying the location of an implanted magnetic assembly using the magnetic viewing sheet by visualizing a magnetic image of the implanted magnetic assembly in the magnetic viewing sheet. The external adjustment device is placed on the patient adjacent to the location where the magnetic image was located.
    Type: Application
    Filed: June 22, 2020
    Publication date: October 8, 2020
    Inventors: Scott Pool, Blair Walker, Arvin Chang
  • Publication number: 20200246049
    Abstract: An external adjustment device includes at least one permanent magnet configured for rotation about an axis with a first handle extending linearly at a first end of the device and a second handle at a second end of the device, the second handle extending in a direction substantially off axis to the first handle. The external adjustment device further includes a motor mounted inside the first handle and a first button located in the proximity to one of the first handle or the second handle, the first button configured to be operated by the thumb of a hand that grips the one of the find handle or second handle. The first button is configured to actuate the motor causing the at least one permanent magnet to rotate about the axis in a first direction.
    Type: Application
    Filed: April 21, 2020
    Publication date: August 6, 2020
    Inventors: Timothy John Payne, Kevin Oberkramer, Scott Pool, Arvin Chang
  • Patent number: 10729470
    Abstract: A method of positioning an external adjustment device relative to a patient includes placing a magnetic viewing sheet adjacent to a patient and identifying the location of an implanted magnetic assembly using the magnetic viewing sheet by visualizing a magnetic image of the implanted magnetic assembly in the magnetic viewing sheet. The external adjustment device is placed on the patient adjacent to the location where the magnetic image was located.
    Type: Grant
    Filed: May 22, 2018
    Date of Patent: August 4, 2020
    Assignee: NuVasive Specialized Orthopedics, Inc.
    Inventors: Scott Pool, Blair Walker, Arvin Chang
  • Patent number: 10660675
    Abstract: An external adjustment device includes at least one permanent magnet configured for rotation about an axis with a first handle extending linearly at a first end of the device and a second handle at a second end of the device, the second handle extending in a direction substantially off axis to the first handle. The external adjustment device further includes a motor mounted inside the first handle and a first button located in the proximity to one of the first handle or the second handle, the first button configured to be operated by the thumb of a hand that grips the one of the first handle or second handle. The first button is configured to actuate the motor causing the at least one permanent magnet to rotate about the axis in a first direction.
    Type: Grant
    Filed: July 26, 2018
    Date of Patent: May 26, 2020
    Assignee: NuVasive Specialized Orthopedics, Inc.
    Inventors: Timothy John Payne, Kevin Oberkramer, Scott Pool, Arvin Chang
  • Publication number: 20200155201
    Abstract: A distraction system includes a first distraction device having a first adjustable portion and a first distraction rod configured to telescope within the first adjustable portion, the first adjustable portion having contained therein a first rotatable magnetic assembly mechanically coupled to a first screw configured to axially telescope the first distraction rod. A second distraction device is provided and includes a second adjustable portion and a second distraction rod configured to telescope within the second adjustable portion, the second adjustable portion having contained therein a second rotatable magnetic assembly mechanically coupled to a second screw configured to axially telescope the second distraction rod. An adjustable joint connects one end of the first adjustable portion to one end of the second adjustable portion.
    Type: Application
    Filed: January 21, 2020
    Publication date: May 21, 2020
    Inventors: Arvin Chang, Blair Walker, Scott Pool, Peter P. Tran
  • Publication number: 20200060735
    Abstract: According to some embodiments, systems and methods of ultrasonic detection of implantable medical device distraction are provided. The system includes a first elongate member and a second elongate member. The first elongate member has a first end that is configured to be attached to a first location on the skeletal system of a subject, a second end, and at least one landmark identifiable using ultrasound. The second elongate member has a first end that is movably coupled to the second end of the first elongate member, a second end configured to be attached to a second location on the skeletal system, and at least one landmark identifiable using ultrasound. Movement of the first elongate member in relation to the second elongate member causes a corresponding movement of the at least one first landmark in relation to the at least one second landmark which can be detected using ultrasound.
    Type: Application
    Filed: September 24, 2019
    Publication date: February 27, 2020
    Inventors: Arvin Chang, Scott Pool
  • Publication number: 20200046986
    Abstract: A wirelessly-powered medical system includes an intermediate energy transfer module configured to receive energy transferred from a main power source, a transferring magnetic resonator connected to the intermediate energy transfer module and configured to transmit a wireless power transfer signal, and a medical device configured for placement on, in, or in close proximity to a subject, the medical device requiring at least some input power to be fully operational, the medical device connected to a receiving magnetic resonator, wherein the transferring magnetic resonator is configured to exchange power wirelessly via the wireless power transfer signal with the receiving magnetic resonator.
    Type: Application
    Filed: August 9, 2019
    Publication date: February 13, 2020
    Inventors: ARVIN CHANG, Scott Pool, Blair Walker
  • Publication number: 20200038071
    Abstract: An interspinous process device is configured for placement between adjacent spinous processes on a subject's spine. The device includes a housing configured for mounting to a first spinal process, the housing having a lead screw fixedly secured at one end thereof. A magnetic assembly is at least partially disposed within the housing and configured for mounting to a second spinal process. The magnetic assembly includes a hollow magnet configured for rotation within the magnetic assembly, the hollow magnet comprising a threaded insert configured to engage with the lead screw. An externally applied magnetic field rotates the hollow magnet in a first direction or a second, opposite direction. Rotation of the hollow magnet in the first direction causes telescopic movement of the magnetic assembly out of the housing (i.e., elongation) and rotation in the second direction causes telescopic movement of the magnetic assembly into the housing (i.e., shortening).
    Type: Application
    Filed: October 9, 2019
    Publication date: February 6, 2020
    Inventors: Scott Pool, Arvin Chang, Peter P. Tran, Blair Walker
  • Patent number: 10478232
    Abstract: An interspinous process device is configured for placement between adjacent spinous processes on a subject's spine. The device includes a housing configured for mounting to a first spinal process, the housing having a lead screw fixedly secured at one end thereof. A magnetic assembly is at least partially disposed within the housing and configured for mounting to a second spinal process. The magnetic assembly includes a hollow magnet configured for rotation within the magnetic assembly, the hollow magnet comprising a threaded insert configured to engage with the lead screw. An externally applied magnetic field rotates the hollow magnet in a first direction or a second, opposite direction. Rotation of the hollow magnet in the first direction causes telescopic movement of the magnetic assembly out of the housing (i.e., elongation) and rotation in the second direction causes telescopic movement of the magnetic assembly into the housing (i.e., shortening).
    Type: Grant
    Filed: March 9, 2017
    Date of Patent: November 19, 2019
    Assignee: NuVasive Specialized Orthopedics, Inc.
    Inventors: Scott Pool, Arvin Chang, Peter P. Tran, Blair Walker
  • Publication number: 20190343559
    Abstract: A distraction system includes a distraction rod having one end configured for affixation to at a first location on patient. The system further includes an adjustable portion configured for placement in the patient at a second location, the adjustable portion comprising a housing containing a magnetic assembly comprising a magnet, the magnetic assembly secured to a threaded element that interfaces with an opposing end of the distraction rod. The system includes a magnetically permeable member in proximity to the magnetic assembly and covering an arc of less than 360° of the adjustable portion.
    Type: Application
    Filed: July 25, 2019
    Publication date: November 14, 2019
    Inventors: Scott Pool, Arvin Chang
  • Patent number: 10463406
    Abstract: According to some embodiments, systems and methods of ultrasonic detection of implantable medical device distraction are provided. The system includes a first elongate member and a second elongate member. The first elongate member has a first end that is configured to be attached to a first location on the skeletal system of a subject, a second end, and at least one landmark identifiable using ultrasound. The second elongate member has a first end that is movably coupled to the second end of the first elongate member, a second end configured to be attached to a second location on the skeletal system, and at least one landmark identifiable using ultrasound. Movement of the first elongate member in relation to the second elongate member causes a corresponding movement of the at least one first landmark in relation to the at least one second landmark which can be detected using ultrasound.
    Type: Grant
    Filed: September 23, 2015
    Date of Patent: November 5, 2019
    Assignee: NuVasive Specialized Orthopedics, Inc.
    Inventors: Arvin Chang, Scott Pool
  • Publication number: 20190321089
    Abstract: A method of treating scoliosis in a subject includes securing a scoliosis treatment device to first and second locations on the subject's skeletal system, the scoliosis treatment device including a first portion, a second portion moveably mounted relative to the first portion, and an adjustment device disposed on the device and configured to change a distraction force between the first location and the second location, the adjustment device including a rotationally mounted magnetic element configured to move the second portion relative to the first portion in response to rotation of the magnetic element. An external adjustment device is provided external to the subject and is able to adjust the distraction force between the first location and second location.
    Type: Application
    Filed: June 6, 2019
    Publication date: October 24, 2019
    Inventors: Blair Walker, Scott Pool, Jay R. McCoy, Arvin Chang
  • Patent number: 10405891
    Abstract: A distraction system includes a distraction rod having one end configured for affixation to at a first location on patient. The system further includes an adjustable portion configured for placement in the patient at a second location, the adjustable portion comprising a housing containing a magnetic assembly comprising a magnet, the magnetic assembly secured to a threaded element that interfaces with an opposing end of the distraction rod. The system includes a magnetically permeable member in proximity to the magnetic assembly and covering an arc of less than 360° of the adjustable portion.
    Type: Grant
    Filed: September 8, 2017
    Date of Patent: September 10, 2019
    Assignee: NuVasive Specialized Orthopedics, Inc.
    Inventors: Scott Pool, Arvin Chang
  • Patent number: 10349995
    Abstract: A method of treating scoliosis in a subject includes securing a scoliosis treatment device to first and second locations on the subject's skeletal system, the scoliosis treatment device including a first portion, a second portion moveably mounted relative to the first portion, and an adjustment device disposed on the device and configured to change a distraction force between the first location and the second location, the adjustment device including a rotationally mounted magnetic element configured to move the second portion relative to the first portion in response to rotation of the magnetic element. An external adjustment device is provided external to the subject and is able to adjust the distraction force between the first location and second location.
    Type: Grant
    Filed: July 3, 2017
    Date of Patent: July 16, 2019
    Assignee: NuVasive Specialized Orthopedics, Inc.
    Inventors: Blair Walker, Scott Pool, Jay R. McCoy, Arvin Chang
  • Publication number: 20190201055
    Abstract: A system includes a first pedicle screw, a second pedicle screw, and an adjustable rod having an outer housing coupled to one of the first pedicle screw and the second pedicle screw, the outer housing having a threaded shaft secured to one end thereof extending along an interior portion thereof. The system further includes a hollow magnetic assembly disposed within the outer housing and having a magnetic element disposed therein, the hollow magnetic assembly having an internal threaded surface engaged with the threaded shaft, the magnetic assembly being coupled to the other of the first pedicle screw and the second pedicle screw, wherein the hollow magnetic assembly rotates in response to an externally applied magnetic field to thereby lengthen or shorten the distance between the first pedicle screw and the second pedicle screw.
    Type: Application
    Filed: March 8, 2019
    Publication date: July 4, 2019
    Inventors: Brad Culbert, Scott Pool, Blair Walker, Arvin Chang, Peter P. Tran
  • Publication number: 20190201067
    Abstract: A system for moving a portion of a patient's body including a housing having a first cavity extending along a longitudinal axis, a first distraction rod having a proximal end and a distal end, the first distraction rod and the housing being telescopically displaceable with respect to each other along the longitudinal axis, the first distraction rod having a cavity extending along the longitudinal axis, a second distraction rod having a proximal end and a distal end and configured to be telescopically displaceable from within the second cavity along the longitudinal axis, and a drive system configured to move the first distraction rod in relation to the housing and to move the second distraction rod in relation to the first distraction rod.
    Type: Application
    Filed: March 11, 2019
    Publication date: July 4, 2019
    Inventors: Ricky Trieu Quach, Arvin Chang, Alan J. Arena, Adam G. Beckett
  • Patent number: 10271885
    Abstract: A system for moving a portion of a patient's body including a housing having a first cavity extending along a longitudinal axis, a first distraction rod having a proximal end and a distal end, the first distraction rod and the housing being telescopically displaceable with respect to each other along the longitudinal axis, the first distraction rod having a cavity extending along the longitudinal axis, a second distraction rod having a proximal end and a distal end and configured to be telescopically displaceable from within the second cavity along the longitudinal axis, and a drive system configured to move the first distraction rod in relation to the housing and to move the second distraction rod in relation to the first distraction rod.
    Type: Grant
    Filed: December 28, 2015
    Date of Patent: April 30, 2019
    Assignee: NuVasive Specialized Orthopedics, Inc.
    Inventors: Ricky Trieu Quach, Arvin Chang, Alan J. Arena, Adam G. Beckett
  • Patent number: 10265101
    Abstract: A system includes a first pedicle screw, a second pedicle screw, and an adjustable rod having an outer housing coupled to one of the first pedicle screw and the second pedicle screw, the outer housing having a threaded shaft secured to one end thereof extending along an interior portion thereof. The system further includes a hollow magnetic assembly disposed within the outer housing and having a magnetic element disposed therein, the hollow magnetic assembly having an internal threaded surface engaged with the threaded shaft, the magnetic assembly being coupled to the other of the first pedicle screw and the second pedicle screw, wherein the hollow magnetic assembly rotates in response to an externally applied magnetic field to thereby lengthen or shorten the distance between the first pedicle screw and the second pedicle screw.
    Type: Grant
    Filed: August 1, 2014
    Date of Patent: April 23, 2019
    Assignee: NuVasive Specialized Orthopedics, Inc.
    Inventors: Brad Culbert, Scott Pool, Blair Walker, Arvin Chang, Peter P. Tran
  • Publication number: 20190000515
    Abstract: An external adjustment device includes at least one permanent magnet configured for rotation about an axis with a first handle extending linearly at a first end of the device and a second handle at a second end of the device, the second handle extending in a direction substantially off axis to the first handle. The external adjustment device further includes a motor mounted inside the first handle and a first button located in the proximity to one of the first handle or the second handle, the first button configured to be operated by the thumb of a hand that grips the one of the first handle or second handle. The first button is configured to actuate the motor causing the at least one permanent magnet to rotate about the axis in a first direction.
    Type: Application
    Filed: July 26, 2018
    Publication date: January 3, 2019
    Inventors: Timothy John Payne, Kevin Oberkramer, Scott Pool, Arvin Chang
  • Publication number: 20190000656
    Abstract: A system includes an adjustable implant configured for implantation internally within a subject and includes a permanent magnet configured for rotation about an axis of rotation, the permanent magnet operatively coupled to a drive transmission configured to alter a dimension of the adjustable implant. The system includes an external adjustment device configured for placement on or adjacent to the skin of the subject having at least one magnet configured for rotation, the external adjustment device further comprising a motor configured to rotate the at least one magnet and an encoder. Rotation of the at least one magnet of the external adjustment device effectuates rotational movement of the permanent magnet of the adjustable implant and alters the dimension of the adjustable implant. Drive control circuitry is configured to receive an input signal from the encoder.
    Type: Application
    Filed: July 6, 2018
    Publication date: January 3, 2019
    Inventors: Scott Pool, Blair Walker, Jay R. McCoy, Peter P. Tran, Richard L. Quick, Shahram Moaddeb, Arvin Chang