Patents by Inventor Akira Ohgushi

Akira Ohgushi 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).

  • Radiosurgery effecting position correction of collimator
    Patent number: 5278886
    Abstract: A stereotactic radiosurgery including a collimator adapted movably to an irradiation head, a driving apparatus for changing a position of the collimator while keeping a position relation in which a center line of a hole of the collimator coincides with a line connecting an apex of a radiation cone and a center portion of the focus, and a control apparatus for detecting a position error between an irradiating direction of the radiation and the center portion of the focus, driving the collimator driving apparatus and moving the collimator to a position at which the detected position error is offset.
    Type: Grant
    Filed: January 5, 1993
    Date of Patent: January 11, 1994
    Assignee: Hitachi Medical Corporation
    Inventors: Takaaki Kobiki, Akira Ohgushi