Patents by Inventor Zhili Zeng

Zhili Zeng 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: 9358055
    Abstract: Techniques are generally described related to a method and system for treating an injury with a bone screw. One example bone screw may be configured to fracture at a pre-selected frangible location so that the point of failure is not in an inaccessible location, e.g., deeply embedded below the surface of a treated bone. The bone screw may further include a material disposed over the frangible location that is designed to temporarily strengthen the screw and selected to be absorbed by the body over a period of time after installation of the screw in the bone. One example bone screw may include an unthreaded portion that is configured to facilitate removal of an embedded screw fragment from a bone in the event that the screw fails in vivo.
    Type: Grant
    Filed: May 27, 2014
    Date of Patent: June 7, 2016
    Assignee: TONGJI UNIVERSITY
    Inventors: Liming Cheng, Yan Yu, Zhili Zeng, Wei Xu, Yongwei Jia, Lie Qian, Rui Zhu, Jianjie Wang, Zhourui Wu
  • Patent number: 8992577
    Abstract: A rod system includes two rods each with a head and a shaft, two elastic members each fitted around one shaft against one head, and a case defining a first inner portion, a second inner portion, and a third inner portion in communication with the first and the second inner portions. A first rod with a first elastic member is seated in the first inner portion so the first elastic member abuts the bottom of first inner portion and the first head protrudes into the third inner portion. A second rod and a second elastic member is seated in the second portion so the second elastic member abuts the bottom of the second inner portion and the second head protrudes into the third inner portion and abuts the first head.
    Type: Grant
    Filed: March 13, 2014
    Date of Patent: March 31, 2015
    Assignee: Tongji University
    Inventors: Liming Cheng, Yan Yu, Zhili Zeng, Wei Xu, Yongwei Jia, Lie Qian, Rui Zhu, Jianjie Wang, Zhourui Wu
  • Publication number: 20140296928
    Abstract: Techniques are generally described related to a method and system for treating an injury with a bone screw. One example bone screw may be configured to fracture at a pre-selected frangible location so that the point of failure is not in an inaccessible location, e.g., deeply embedded below the surface of a treated bone. The bone screw may further include a material disposed over the frangible location that is designed to temporarily strengthen the screw and selected to be absorbed by the body over a period of time after installation of the screw in the bone. One example bone screw may include an unthreaded portion that is configured to facilitate removal of an embedded screw fragment from a bone in the event that the screw fails in vivo.
    Type: Application
    Filed: May 27, 2014
    Publication date: October 2, 2014
    Applicant: TONGJI UNIVERSITY
    Inventors: Liming CHENG, Yan YU, Zhili ZENG, Wei XU, Yongwei JIA, Lie QIAN, Rui ZHU, Jianjie WANG, Zhourui WU
  • Publication number: 20140194931
    Abstract: A rod system includes two rods each with a head and a shaft, two elastic members each fitted around one shaft against one head, and a case defining a first inner portion, a second inner portion, and a third inner portion in communication with the first and the second inner portions. A first rod with a first elastic member is seated in the first inner portion so the first elastic member abuts the bottom of first inner portion and the first head protrudes into the third inner portion. A second rod and a second elastic member is seated in the second portion so the second elastic member abuts the bottom of the second inner portion and the second head protrudes into the third inner portion and abuts the first head.
    Type: Application
    Filed: March 13, 2014
    Publication date: July 10, 2014
    Applicant: TONGJI UNIVERSITY
    Inventors: Liming Cheng, Yan Yu, Zhili Zeng, Wei Xu, Yongwei Jia, Lie Qian, Rui Zhu, Jianjie Wang, Zhourui Wu
  • Patent number: 8753380
    Abstract: Techniques are generally described related to a method and system for treating an injury with a bone screw. One example bone screw may be configured to fracture at a pre-selected frangible location so that the point of failure is not in an inaccessible location, e.g., deeply embedded below the surface of a treated bone. The bone screw may further include a material disposed over the frangible location that is designed to temporarily strengthen the screw and selected to be absorbed by the body over a period of time after installation of the screw in the bone. One example bone screw may include an unthreaded portion that is configured to facilitate removal of an embedded screw fragment from a bone in the event that the screw fails in vivo.
    Type: Grant
    Filed: August 2, 2010
    Date of Patent: June 17, 2014
    Assignee: Tongji University
    Inventors: Liming Cheng, Yan Yu, Zhili Zeng, Wei Xu, Yongwei Jia, Lie Qian, Rui Zhu, Jianjie Wang, Zhourui Wu
  • Patent number: 8709048
    Abstract: A rod system includes two rods each with a head and a shaft, two elastic members each fitted around one shaft against one head, and a case defining a first inner portion, a second inner portion, and a third inner portion in communication with the first and the second inner portions. A first rod with a first elastic member is seated in the first inner portion so the first elastic member abuts the bottom of first inner portion and the first head protrudes into the third inner portion. A second rod and a second elastic member is seated in the second portion so the second elastic member abuts the bottom of the second inner portion and the second head protrudes into the third inner portion and abuts the first head.
    Type: Grant
    Filed: August 20, 2010
    Date of Patent: April 29, 2014
    Assignee: Tongji University
    Inventors: Liming Cheng, Yan Yu, Zhili Zeng, Wei Xu, Yongwei Jia, Lie Qian, Rui Zhu, Jianjie Wang, Zhourui Wu
  • Publication number: 20130261667
    Abstract: A rod system includes two rods each with a head and a shaft, two elastic members each fitted around one shaft against one head, and a case defining a first inner portion, a second inner portion, and a third inner portion in communication with the first and the second inner portions. A first rod with a first elastic member is seated in the first inner portion so the first elastic member abuts the bottom of first inner portion and the first head protrudes into the third inner portion. A second rod and a second elastic member is seated in the second portion so the second elastic member abuts the bottom of the second inner portion and the second head protrudes into the third inner portion and abuts the first head.
    Type: Application
    Filed: August 20, 2010
    Publication date: October 3, 2013
    Applicant: TONJI UNIVERSITY
    Inventors: Liming Cheng, Yan Yu, Zhili Zeng, Wei Xu, Yongwei Jia, Lie Qian, Rui Zhu, Jianjie Wang, Zhourui Wu
  • Publication number: 20130131737
    Abstract: Techniques are generally described related to a method and system for treating an injury with a bone screw. One example bone screw may be configured to fracture at a pre-selected frangible location so that the point of failure is not in an inaccessible location, e.g., deeply embedded below the surface of a treated bone. The bone screw may further include a material disposed over the frangible location that is designed to temporarily strengthen the screw and selected to be absorbed by the body over a period of time after installation of the screw in the bone. One example bone screw may include an unthreaded portion that is configured to facilitate removal of an embedded screw fragment from a bone in the event that the screw fails in vivo.
    Type: Application
    Filed: August 2, 2010
    Publication date: May 23, 2013
    Applicant: TONGJI UNIVERSITY
    Inventors: Liming Cheng, Yan Yu, Zhili Zeng, Wei Xu, Yongwei Jia, Lie Qian, Rui Zhu, Jianjie Wang, Zhourui Wu