Patents by Inventor Hsi-Hsun Tseng

Hsi-Hsun Tseng 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).

  • Safety syringe
    Patent number: 7927301
    Abstract: A safety syringe includes an outer barrel, a needle unit, an outer barrel plug, an inner barrel, an inner barrel plug, a needle clamper, and a vacuum generating device. The needle unit is disposed within the front end of the outer barrel. The outer barrel plug is disposed within the outer barrel; the outer barrel plug is connected with the needle unit so as to fix the needle unit. The inner barrel plug is disposed within the front end of the inner barrel. The needle clamper is connected with the inner barrel plug. The needle clamper is able to clamp a rear opening of the needle unit. The vacuum generating device is disposed within the inner barrel, and the needle unit can be retracted into the inner barrel by the low pressure which is generated by the vacuum generating device.
    Type: Grant
    Filed: April 3, 2009
    Date of Patent: April 19, 2011
    Inventors: Hsi-Hsun Tseng, Chih-Ming Wang, Po-Liang Lee, Chun-Chieh Chuang
  • SAFETY SYRINGE
    Publication number: 20100125252
    Abstract: A safety syringe includes an outer barrel, a needle unit, an outer barrel plug, an inner barrel, an inner barrel plug, a needle clamper, and a vacuum generating device. The needle unit is disposed within the front end of the outer barrel. The outer barrel plug is disposed within the outer barrel; the outer barrel plug is connected with the needle unit so as to fix the needle unit. The inner barrel plug is disposed within the front end of the inner barrel. The needle clamper is connected with the inner barrel plug. The needle clamper is able to clamp a rear opening of the needle unit. The vacuum generating device is disposed within the inner barrel, and the needle unit can be retracted into the inner barrel by the low pressure which is generated by the vacuum generating device.
    Type: Application
    Filed: April 3, 2009
    Publication date: May 20, 2010
    Inventors: Hsi-Hsun Tseng, Chih-Ming Wang, Po-Liang Lee, Chun-Chieh Chuang