Patents by Inventor Yasushi Orihashi

Yasushi Orihashi 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).

  • Measurement of arterial elasticity and the frequency characteristic of the compliance of an artery
    Patent number: 5379774
    Abstract: An apparatus for measuring arterial elasticity includes a cuff member having a light source and light detector, a variable pressure generating device, a fluid pressure sensor, a digital signal processor and a difference detecting element. The fluid pressure in a fluid pressure chamber in the cuff member is varied by a variable fluid pressure generating device. The digital signal processor responds to the output of the fluid pressure sensor and the output of the difference detecting element and delivers a digitally processed signal corresponding to an arterial volume change based on a simulated arterial elasticity. The arterial elasticity and the frequency characteristic thereof are derived based on the operation of the digital signal processor.
    Type: Grant
    Filed: March 25, 1994
    Date of Patent: January 10, 1995
    Assignee: Sankyo Company Limited
    Inventors: Masatoshi Nishimura, Masaaki Takahashi, Yasushi Orihashi