Patents by Inventor Manabu Hiroura

Manabu Hiroura 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: 5976463
    Abstract: In a pump-oxygenator, artificial lungs are located in a blood delivery line for adding oxygen to a blood stream flowing through the blood delivery line and removing carbonic acid gas therefrom. A plurality of sub-reservoirs are located upstream of a main reservoir to store blood therein. A plurality of sub-suction lines for blood are respectively connected to the plurality of sub-reservoirs. The pump is driven to supply a negative pressure with the main reservoir, a magnitude of which is smaller than a negative pressure induced in the sub-reservoirs so as to draw the blood from the sub-reservoirs and the blood-drawing line to the main reservoir. A controller has control sections each supplied with a negative pressure by a negative pressure source, and connected to the corresponding sub-reservoirs and the main reservoir by way of negative pressure lines so as to control the negative pressure in each of the sub-reservoirs and the main reservoir at a preset value.
    Type: Grant
    Filed: January 27, 1997
    Date of Patent: November 2, 1999
    Assignees: Shigehisa Amano, SN Seiki Co., Ltd.
    Inventors: Chifuru Nomura, Manabu Hiroura