Patents by Inventor Kefei DOU

Kefei DOU 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).

  • Cobalt-chromium alloy stent and drug eluting stent
    Patent number: 12433773
    Abstract: A cobalt-chromium alloy stent comprising several main body units, wherein each main body unit is composed of several supporting rings connected by flexible ribs and the adjacent main body units are connected by several connecting ribs. A drug eluting stent comprising the cobalt-chromium alloy stent and a drug coating containing arsenic trioxide and tacrolimus. The drug release curves of the two composite drugs of arsenic trioxide and tacrolimus used in the present invention are adjusted, so that the inflammatory response of vascular endothelial cells and the proliferation behavior of vascular smooth muscle cells are effectively inhibited, and the vascular restenosis rate is reduced.
    Type: Grant
    Filed: January 15, 2025
    Date of Patent: October 7, 2025
    Assignee: AMSINOMED MEDICAL CO., LTD
    Inventors: Dongyun Hao, Bo Yu, Kefei Dou, Xin Shen, Bili Zhang, Fugui He, Lifeng Zhou, Xiaoyi Ma
  • COBALT-CHROMIUM ALLOY STENT AND DRUG ELUTING STENT
    Publication number: 20250152387
    Abstract: A cobalt-chromium alloy stent comprising several main body units, wherein each main body unit is composed of several supporting rings connected by flexible ribs and the adjacent main body units are connected by several connecting ribs. A drug eluting stent comprising the cobalt-chromium alloy stent and a drug coating containing arsenic trioxide and tacrolimus. The drug release curves of the two composite drugs of arsenic trioxide and tacrolimus used in the present invention are adjusted, so that the inflammatory response of vascular endothelial cells and the proliferation behavior of vascular smooth muscle cells are effectively inhibited, and the vascular restenosis rate is reduced.
    Type: Application
    Filed: January 15, 2025
    Publication date: May 15, 2025
    Inventors: Dongyun HAO, Bo YU, Kefei DOU, Xin SHEN, Bili ZHANG, Fugui HE, Lifeng ZHOU, Xiaoyi MA