Patents by Inventor Siwen Liu

Siwen Liu 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: 9131857
    Abstract: A battery-free electronic blood pressure measuring apparatus comprising a cuff (40), an airbag (22) to push air into the cuff (40), a power generation unit which has a generator (42) and an operating handle (28) coupled with the wall of the airbag (22) to generate electrical power, and a display device (44) to receive electrical power from the power generation unit, detect a blood pressure signal from the cuff (40), generate and display a blood pressure measurement. A method for electronically measuring blood pressure with a battery-free sphygmomanometer comprises pressing an airbag and a generator-driving structure attached to the airbag wall, which leads to electrical power generation and cuff inflation by the airbag at the same time, and measuring the blood pressure with the generated electrical power.
    Type: Grant
    Filed: February 13, 2012
    Date of Patent: September 15, 2015
    Inventors: Tianren Wang, Xuyao Shi, Siwen Liu, Wenjiao Wang
  • Publication number: 20130211267
    Abstract: A battery-free electronic blood pressure measuring apparatus comprising a cuff (40), an airbag (22) to push air into the cuff (40), a power generation unit which has a generator (42) and an operating handle (28) coupled with the wall of the airbag (22) to generate electrical power, and a display device (44) to receive electrical power from the power generation unit, detect a blood pressure signal from the cuff (40), generate and display a blood pressure measurement. A method for electronically measuring blood pressure with a battery-free sphygmomanometer comprises pressing an airbag and a generator-driving structure attached to the airbag wall, which leads to electrical power generation and cuff inflation by the airbag at the same time, and measuring the blood pressure with the generated electrical power.
    Type: Application
    Filed: February 13, 2012
    Publication date: August 15, 2013
    Inventors: Tianren Wang, Xuyao Shi, Siwen Liu, Wenjiao Wang