Patents by Inventor Hing Chiu CHANG

Hing Chiu 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).

  • MRI tracking device design, fabrication, and methods of use for MRI-guided robotic system
    Patent number: 12092710
    Abstract: An MR marker (501, 601, 803, 902) for magnetic resonance imaging (MRI) guided intervention and method of fabricating same. The tracking device can be integrated with an MRI-guided robotic system to provide precise positional tracking of the interventional tools and robotic components, allowing safe operation inside the human body. The MR tracking device includes a plurality of stacked flexible printed circuit boards; a plurality of flat planar spirals comprised of a non-ferromagnetic material and directly disposed on a top surface and a bottom surface side of each flexible printed circuit board, a biocompatible, non-ferromagnetic material encapsulating the flexible printed circuit boards; and an adhesive bonding the flexible printed circuit boards. In another aspect, an orientation-independent device is provided including three or more markers (501, 601, 803, 902) in an array around a cylindrical substrate.
    Type: Grant
    Filed: March 11, 2019
    Date of Patent: September 17, 2024
    Assignee: The University of Hong Kong
    Inventors: Ka Wai Kwok, Chim Lee Cheung, Di-Lang Justin Ho, Ziyan Guo, Hing Chiu Chang, Varut Vardhanabhuti
  • MRI TRACKING DEVICE DESIGN, FABRICATION, AND METHODS OF USE FOR MRI-GUIDED ROBOTIC SYSTEM
    Publication number: 20210003644
    Abstract: An MR marker (501, 601, 803, 902) for magnetic resonance imaging (MRI) guided intervention and method of fabricating same. The tracking device can be integrated with an MRI-guided robotic system to provide precise positional tracking of the interventional tools and robotic components, allowing safe operation inside the human body. The MR tracking device includes a plurality of stacked flexible printed circuit boards; a plurality of flat planar spirals comprised of a non-ferromagnetic material and directly disposed on a top surface and a bottom surface side of each flexible printed circuit board, a biocompatible, non-ferromagnetic material encapsulating the flexible printed circuit boards; and an adhesive bonding the flexible printed circuit boards. In another aspect, an orientation-independent device is provided including three or more markers (501, 601, 803, 902) in an array around a cylindrical substrate.
    Type: Application
    Filed: March 11, 2019
    Publication date: January 7, 2021
    Inventors: Ka Wai KWOK, Chim Lee CHEUNG, Di-Lang Justin HO, Ziyan GUO, Hing Chiu CHANG, Varut VARDHANABHUTI