Patents by Inventor Hirohito Sumikura

Hirohito Sumikura 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).

  • Methods and apparatus for controlling a continuous flow rotary blood pump
    Patent number: 7284956
    Abstract: A control system for a continuous flow rotary blood pump is provided. A normal operating range of the blood pump is established. The normal operating range may comprise a normal pump flow range and a normal pressure head range. A target rotational speed of the pump is set in accordance with the normal operating range. A current operating condition of the blood pump is determined. The current operating condition may comprise a current pump flow, a current pressure head, and a current rotational speed of the pump. The current operating condition is compared with the normal operating range. An appropriate control algorithm is selected from a plurality of available control algorithms based on the comparison. The target rotational speed of the pump is adjusted using the selected control algorithm to maintain or recover the normal operating range.
    Type: Grant
    Filed: November 8, 2002
    Date of Patent: October 23, 2007
    Assignees: Miwatec Co., Ltd., Baylor College of Medicine
    Inventors: Yukihiko Nose, Toshiyuki Shinohara, Ryo Kosaka, Hirohito Sumikura
  • Methods and apparatus for controlling a continuous flow rotary blood pump
    Patent number: 6817836
    Abstract: A control system for a continuous flow rotary blood pump is provided. A normal operating range of the blood pump is established. The normal operating range may comprise a normal pump flow range and a normal pressure head range. A target rotational speed of the pump is set in accordance with the normal operating range. A current operating condition of the blood pump is determined. The current operating condition may comprise a current pump flow, a current pressure head, and a current rotational speed of the pump. The current operating condition is compared with the normal operating range. An appropriate control algorithm is selected from a plurality of available control algorithms based on the comparison. The target rotational speed of the pump is adjusted using the selected control algorithm to maintain or recover the normal operating range.
    Type: Grant
    Filed: September 10, 2002
    Date of Patent: November 16, 2004
    Assignees: Miwatec Incorporated, Baylor College of Medicine
    Inventors: Yukihiko Nose, Toshiyuki Shinohara, Ryo Kosaka, Hirohito Sumikura
  • Methods and apparatus for controlling a continuous flow rotary blood pump
    Publication number: 20040047737
    Abstract: A control system for a continuous flow rotary blood pump is provided. A normal operating range of the blood pump is established. The normal operating range may comprise a normal pump flow range and a normal pressure head range. A target rotational speed of the pump is set in accordance with the normal operating range. A current operating condition of the blood pump is determined. The current operating condition may comprise a current pump flow, a current pressure head, and a current rotational speed of the pump. The current operating condition is compared with the normal operating range. An appropriate control algorithm is selected from a plurality of available control algorithms based on the comparison. The target rotational speed of the pump is adjusted using the selected control algorithm to maintain or recover the normal operating range.
    Type: Application
    Filed: November 8, 2002
    Publication date: March 11, 2004
    Applicants: MIWATEC INCORPORATED, BAYLOR COLLEGE OF MEDICINE
    Inventors: Yukihiko Nose, Toshiyuki Shinohara, Ryo Kosaka, Hirohito Sumikura
  • Methods and apparatus for controlling a continuous flow rotary blood pump
    Publication number: 20040047736
    Abstract: A control system for a continuous flow rotary blood pump is provided. A normal operating range of the blood pump is established. The normal operating range may comprise a normal pump flow range and a normal pressure head range. A target rotational speed of the pump is set in accordance with the normal operating range. A current operating condition of the blood pump is determined. The current operating condition may comprise a current pump flow, a current pressure head, and a current rotational speed of the pump. The current operating condition is compared with the normal operating range. An appropriate control algorithm is selected from a plurality of available control algorithms based on the comparison. The target rotational speed of the pump is adjusted using the selected control algorithm to maintain or recover the normal operating range.
    Type: Application
    Filed: September 10, 2002
    Publication date: March 11, 2004
    Applicants: Miwatec Incorporated, Baylor College of Medicine
    Inventors: Yukihiko Nose, Toshiyuki Shinohara, Ryo Kosaka, Hirohito Sumikura