Patents by Inventor Guo-Quing Wei

Guo-Quing Wei 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).

  • Patent number: 5820545
    Abstract: For tracking a mono- or stereo-laparoscope in connection with minimally invasive surgery, where the laparoscope is moved by a robot in respect to surgical instruments located in the operation area, surgical instruments are color-coded and are identified in images provided by the camera of the laparoscope. Signals for controlling the robot are derived from the position of the color-coded surgical instruments in images generated by both cameras. The robot automatically brings the laparoscope into such a position that the color-coded surgical instruments are continuously shown in the center area of the monitor device and hold the laparoscope distance to the surgical instrument in the case of stereo. To prevent interfering movements of an image when working with the surgical instruments, the laparoscope continuously tracks the color-coded surgical instruments in such a way that the tracking of the image is controlled relatively lightly in the central area of the monitor, but strongly in its edge area.
    Type: Grant
    Filed: August 13, 1996
    Date of Patent: October 13, 1998
    Assignee: Deutsche Forschungsanstalt Fur Luft-Und Raumfahrt E.V.
    Inventors: Klaus Arbter, Guo-Quing Wei