Patents by Inventor Haichen CONG

Haichen CONG 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: 10799271
    Abstract: The low profile screw base comprises a screw base body and a positioning compression ring. An assembly hole penetrates longitudinally through the screw base body. A U-shaped slot for a connecting rod to pass through is provided on an upper portion of the screw base body. The inner wall of the screw base body on the opposite sides of the U-shaped slot is provided with internal threads. Snapping protrusions are formed on the inner wall of the screw base body on the opposite sides of the U-shaped slot below the internal threads. A lower ball socket matched with the round head of the ball screw is arranged in the assembly hole of the lower portion of the screw base body. The positioning compression ring used for compressing the round head is snap fitted above the lower ball socket and below the snapping protrusions (6).
    Type: Grant
    Filed: April 29, 2016
    Date of Patent: October 13, 2020
    Assignee: SHANDONG WEIGAO ORTHOPEDIC DEVICE COMPANY LTD
    Inventors: Chunhui Wu, Jianguo Zhang, Ning Xie, Yajun Gao, Haichen Cong
  • Publication number: 20180132911
    Abstract: A grasping end of a frog-style forceps relates to the technical field of medical instrument for spinal surgery, and comprises a grasping end tube and a pressing-rod sleeve. The pressing-rod sleeve is sleeved over the grasping end tube. Two opposite strip-shaped openings are axially provided on a side wall of the grasping end tube. Positioning spring sheets are disposed inside the strip-shaped openings. Positioning protrusions are disposed on inner sides of lower end portions of the two positioning spring sheets inside the strip-shaped openings at a lower portion of the grasping end tube. A position limiting protrusion is disposed inside the lower portion of the grasping end tube. The grasping end for a frog-style forceps does not need to align relatively small positioning protrusions with a slot on a screw seat, so that it is convenient and easy to assemble and very easy to dismantle the grasping end.
    Type: Application
    Filed: May 5, 2016
    Publication date: May 17, 2018
    Inventors: Chunhui WU, Haibo ZOU, Xiujun ZHENG, Yajun GAO, Chaoliang YU, Haichen CONG
  • Publication number: 20180092666
    Abstract: The low profile screw base comprises a screw base body and a positioning compression ring. An assembly hole penetrates longitudinally through the screw base body. A U-shaped slot for a connecting rod to pass through is provided on an upper portion of the screw base body. The inner wall of the screw base body on the opposite sides of the U-shaped slot is provided with internal threads. Snapping protrusions are formed on the inner wall of the screw base body on the opposite sides of the U-shaped slot below the internal threads. A lower ball socket matched with the round head of the ball screw is arranged in the assembly hole of the lower portion of the screw base body. The positioning compression ring used for compressing the round head is snap fitted above the lower ball socket and below the snapping protrusions (6).
    Type: Application
    Filed: April 29, 2016
    Publication date: April 5, 2018
    Inventors: Chunhui WU, Jianguo ZHANG, Ning XIE, Yajun GAO, Haichen CONG