Patents by Inventor Koichi Wakikaido

Koichi Wakikaido 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: 7588570
    Abstract: A central electrode (12a) and an outer electrode (16a) are arranged in such a manner that their top end portions are inclined in the same direction with respect to the axial direction of the outer conductor (14). When the outer conductor (14) and the movable conductor (16) are relatively shifted in the axial direction, the central electrode (12a) and the outer electrode (16a) slidingly move on each other along the inclined direction, whereby a biotissue is cut between the central electrode (12a) and the outer electrode (16a).
    Type: Grant
    Filed: June 7, 2004
    Date of Patent: September 15, 2009
    Inventors: Koichi Wakikaido, Tohru Tani
  • Patent number: 7195626
    Abstract: Disclosed is an electrode device for microwave surgery which is provided with a marker securely fixed to the central electrode, which marker can provide a magnetic susceptibility artifact of a uniform size and shape free of fluctuation among electrode devices. The electrode device comprise a central conductor body, a tubular insulator body which covers the central conductor body except its distal end, a tubular external electrode which covers the tubular insulator body except its distal end part, and a central electrode which covers the distal end part of the central conductor body. The central conductor body, the insulator body, the external electrode and the central electrode are made of a nonmagnetic material, and a cylindrical member made of a magnetic material is fit around the distal end part of the central conductor body.
    Type: Grant
    Filed: June 2, 2003
    Date of Patent: March 27, 2007
    Assignee: Alfresa Pharma
    Inventors: Koichi Wakikaido, Yoshimasa Kurumi, Shigeyuki Naka, Shigehiro Morikawa
  • Publication number: 20070054539
    Abstract: A central electrode (12a) and an outer electrode (16a) are arranged in such a manner that their top end portions are inclined in the same direction with respect to the axial direction of the outer conductor (14). When the outer conductor (14) and the moveable conductor (16) are relatively shifted in the axial direction, the central electrode (12a) and the outer electrode (16a) slidingly move on each other along the inclined direction, whereby a biotissue is cut between the central electron (12a) and the outer electrode (16a).
    Type: Application
    Filed: June 7, 2004
    Publication date: March 8, 2007
    Applicant: Alfresa Pharma Corporation
    Inventor: Koichi Wakikaido
  • Publication number: 20050149009
    Abstract: Disclosed is an electrode device for microwave surgery which is provided with a marker securely fixed to the central electrode, which marker can provide a magnetic susceptibility artifact of a uniform size and shape free of fluctuation among electrode devices. The electrode device comprise a central conductor body, a tubular insulator body which covers the central conductor body except its distal end, a tubular external electrode which covers the tubular insulator body except its distal end part, and a central electrode which covers the distal end part of the central conductor body. The central conductor body, the insulator body, the external electrode and the central electrode are made of a nonmagnetic material, and a cylindrical member made of a magnetic material is fit around the distal end part of the central conductor body.
    Type: Application
    Filed: June 2, 2003
    Publication date: July 7, 2005
    Inventors: Koichi Wakikaido, Yoshimasa Kurumi, Shigeyuki Naka, Shigehiro Morikawa
  • Patent number: 6451014
    Abstract: An electrode device is for microwave coagulation therapy disclosed in which the direction of its electrode tip can be controlled by operation in its proximal region.
    Type: Grant
    Filed: March 9, 2000
    Date of Patent: September 17, 2002
    Assignee: Azwell, Inc.
    Inventors: Koichi Wakikaido, Suminori Kitada
  • Patent number: 6428535
    Abstract: A medical apparatus comprising an apparatus body and a terminal instrument which operates when receiving a terminal output which is an electric or electromagnetic output. The terminal instrument is provided with an installed cell of predetermined capacity and the apparatus body is provided with a circuit for measuring the electromotive force (emf) of the installed cell while discharging the emf via a predetermined resistance as the terminal instrument is used. A comparator compares the emf with a standard voltage and the output command is blocked from the primary control section when the emf of the installed cell is below the standard voltage. Moreover, an alarm is generated when the emf of the installed cell is below the standard voltage level during the use of the terminal instrument.
    Type: Grant
    Filed: June 7, 2000
    Date of Patent: August 6, 2002
    Assignee: Azwell Inc.
    Inventors: Koichi Wakikaido, Suminori Kitada