Patents by Inventor J. Chang Kenneth

J. Chang Kenneth 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).

  • Fluoroscopy-free guidewire systems and methods
    Patent number: 8412311
    Abstract: A system (10) includes electromagnetic indicator coils (30) included in surgical devices, examples of surgical devices (20) including guidewires; surgical instruments including dilators, stents, catheters, jejunostomy tubes, and endoscopes; and indicator clips (used for marking a location within patient). An innovative device indicator is attachable to any surgical instrument to convert it to an electromagnetically monitorable instrument. A monitoring unit (50) detects electromagnetic fields from the electromagnetic indicator coils and displays the location and configuration of the electromagnetic indicator coils on a display unit (80). The relative positions and overall configuration of multiple devices—such as guidewires, instruments, and location marker indicator clips—can all be simultaneously electromagnetically monitored with the use of radiology.
    Type: Grant
    Filed: September 12, 2005
    Date of Patent: April 2, 2013
    Assignee: The Regents of the University of California
    Inventor: J. Chang Kenneth