Patents by Inventor Changging Li

Changging Li 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).

  • Traction apparatus and traction ring for traction apparatus
    Patent number: 11925343
    Abstract: A traction apparatus, comprising a clip portion (2) and a traction portion (1), the traction portion containing a closed traction structure (11); the closed traction structure being made from an elastic material; the clip portion comprising a main clip body (23, 25) and a clip arm (24, 26); the main clip body being capable of passing through a biopsy channel (4) of an endoscope (3), the clip arm being capable of clip the closed traction structure. Also disclosed is a traction ring used for the traction apparatus, the traction ring being a single closed traction structure or being formed by connecting several closed traction structures, the traction ring being made from an elastic material.
    Type: Grant
    Filed: November 4, 2020
    Date of Patent: March 12, 2024
    Assignees: MICRO-TECH (NANJING) CO., LTD., BEIJING FRIENDSHIP HOSPITAL, CAPITAL MEDICAL UNIVERSITY
    Inventors: Ming Ji, Jianjun Shuang, Zhenghua Shen, Changging Li, Derong Leng, Chunjun Liu, Jie Hu