Patents by Inventor Zufeng Shang

Zufeng Shang 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).

  • Sponge-based variable-stiffness support structure for natural orifice surgical instrument and method for using the same
    Patent number: 12016537
    Abstract: A sponge-based variable-stiffness support structure for natural orifice surgical instrument is to support the surgical instrument and includes: a variable-stiffness sponge pipeline connected with the natural orifice surgical instrument and configured to support the natural orifice surgical instrument in a natural orifice; a hydrophobic breathable film attached to an outer wall of the variable-stiffness sponge pipeline, and configured to isolate the variable-stiffness sponge pipeline from body fluid in the natural orifice; and a gas delivery assembly connected with the variable-stiffness sponge pipeline, and configured to inject high-pressure air or water vapor into a variable-stiffness sponge pipe of the variable-stiffness sponge pipeline; wherein the variable-stiffness sponge pipeline has a stiffness inversely proportional to content of the water vapor.
    Type: Grant
    Filed: June 29, 2018
    Date of Patent: June 25, 2024
    Assignee: Tianjin University
    Inventors: Shuxin Wang, Xuyang Ren, Guokai Zhang, Zufeng Shang, Jinhua Li
  • SPONGE-BASED VARIABLE-STIFFNESS SUPPORT STRUCTURE FOR NATURAL ORIFICE SURGICAL INSTRUMENT AND METHOD FOR USING THE SAME
    Publication number: 20210000460
    Abstract: A sponge-based variable-stiffness support structure for natural orifice surgical instrument is to support the surgical instrument and includes: a variable-stiffness sponge pipeline connected with the natural orifice surgical instrument and configured to support the natural orifice surgical instrument in a natural orifice; a hydrophobic breathable film attached to an outer wall of the variable-stiffness sponge pipeline, and configured to isolate the variable-stiffness sponge pipeline from body fluid in the natural orifice; and a gas delivery assembly connected with the variable-stiffness sponge pipeline, and configured to inject high-pressure air or water vapor into a variable-stiffness sponge pipe of the variable-stiffness sponge pipeline; wherein the variable-stiffness sponge pipeline has a stiffness inversely proportional to content of the water vapor.
    Type: Application
    Filed: June 29, 2018
    Publication date: January 7, 2021
    Inventors: Shuxin Wang, Xuyang Ren, Guokai Zhang, Zufeng Shang, Jinhua Li