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).
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Patent number: 9358055Abstract: 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: GrantFiled: May 27, 2014Date of Patent: June 7, 2016Assignee: TONGJI UNIVERSITYInventors: Liming Cheng, Yan Yu, Zhili Zeng, Wei Xu, Yongwei Jia, Lie Qian, Rui Zhu, Jianjie Wang, Zhourui Wu
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Patent number: 8992577Abstract: 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: GrantFiled: March 13, 2014Date of Patent: March 31, 2015Assignee: Tongji UniversityInventors: Liming Cheng, Yan Yu, Zhili Zeng, Wei Xu, Yongwei Jia, Lie Qian, Rui Zhu, Jianjie Wang, Zhourui Wu
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Publication number: 20140296928Abstract: 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: ApplicationFiled: May 27, 2014Publication date: October 2, 2014Applicant: TONGJI UNIVERSITYInventors: Liming CHENG, Yan YU, Zhili ZENG, Wei XU, Yongwei JIA, Lie QIAN, Rui ZHU, Jianjie WANG, Zhourui WU
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Publication number: 20140194931Abstract: 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: ApplicationFiled: March 13, 2014Publication date: July 10, 2014Applicant: TONGJI UNIVERSITYInventors: Liming Cheng, Yan Yu, Zhili Zeng, Wei Xu, Yongwei Jia, Lie Qian, Rui Zhu, Jianjie Wang, Zhourui Wu
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Patent number: 8753380Abstract: 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: GrantFiled: August 2, 2010Date of Patent: June 17, 2014Assignee: Tongji UniversityInventors: Liming Cheng, Yan Yu, Zhili Zeng, Wei Xu, Yongwei Jia, Lie Qian, Rui Zhu, Jianjie Wang, Zhourui Wu
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Patent number: 8709048Abstract: 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: GrantFiled: August 20, 2010Date of Patent: April 29, 2014Assignee: Tongji UniversityInventors: Liming Cheng, Yan Yu, Zhili Zeng, Wei Xu, Yongwei Jia, Lie Qian, Rui Zhu, Jianjie Wang, Zhourui Wu
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Publication number: 20130261667Abstract: 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: ApplicationFiled: August 20, 2010Publication date: October 3, 2013Applicant: TONJI UNIVERSITYInventors: Liming Cheng, Yan Yu, Zhili Zeng, Wei Xu, Yongwei Jia, Lie Qian, Rui Zhu, Jianjie Wang, Zhourui Wu
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Publication number: 20130131737Abstract: 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: ApplicationFiled: August 2, 2010Publication date: May 23, 2013Applicant: TONGJI UNIVERSITYInventors: Liming Cheng, Yan Yu, Zhili Zeng, Wei Xu, Yongwei Jia, Lie Qian, Rui Zhu, Jianjie Wang, Zhourui Wu