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    • 6. 发明公开
    • Spinal connector
    • Wirbelsäulen-Verbindungselement
    • EP1982663A2
    • 2008-10-22
    • EP08154821.6
    • 2008-04-18
    • EBI, LLC
    • Hawkins, Nathaniel E.Bender, Nicholas J.Ferreira, Rui J.
    • A61B17/70
    • A61B17/705
    • A spinal connector includes a first seat having a first opening for coupling to a first spinal connecting member along a first longitudinal axis and a second seat having a second opening for coupling to a second spinal connecting member along a second longitudinal axis. The second longitudinal axis is substantially coaxial to the first longitudinal axis for connecting the first and second connecting members end to end. The spinal connector also includes a ball enclosure rotatably received in the second opening of the second seat. The ball enclosure defines a bore along the second longitudinal axis and articulates with the second opening for allowing change of orientation of the second connecting member relative to the first connecting member.
    • 脊椎连接器包括具有第一开口的第一座,所述第一开口用于沿着第一纵向轴线联接到第一脊柱连接构件,第二座具有第二开口,用于沿着第二纵向轴线联接到第二脊柱连接构件。 第二纵向轴线基本上与第一纵向轴线同轴,用于将第一和第二连接构件端对端连接。 脊椎连接器还包括可旋转地容纳在第二座椅的第二开口中的球壳。 球壳体沿着第二纵向轴线限定孔,并与第二开口铰接,以允许第二连接构件相对于第一连接构件的取向改变。
    • 7. 发明授权
    • METHOD OF CALIBRATING A POSITIONING SYSTEM IN A RADIATION THERAPY SYSTEM
    • 方法用于校准的定位系统,放射治疗系统
    • EP1868684B1
    • 2008-09-17
    • EP06742570.2
    • 2006-04-12
    • Elekta AB (publ)
    • CARLSSON, PerHEDIN, Lars
    • A61N5/10
    • A61N5/1049A61N5/1084
    • Calibration of a radiation therapy system comprising a radiation unit (10) with a fixed focus point, a fixation unit (50) for fixing a treatment volume in a patient, and a positioning system (20). The positioning system (20) comprises a fixed framework (22), a movable carriage (24) for carrying and moving the entire patient, motor (s), a control system for controlling the motor (s), and at least one engagement point (30, 32) for releasably mounting the fixation unit (50) in fixed engagement with the positioning system (20). A fixation unit coordinate system defined in relation to the fixation unit (50) is provided. Linearity errors for the motional axes of the carriage (24) and the angular offset between the motional axes and the coordinate system is determined, whereby the relationships between the axes of the coordinate system and the motional axes of the positioning system (20) are determined. The positioning system is then mounted in fixed relationship with the radiation therapy unit (10) and the focus point in relation to the positioning system (20) is determined, whereby the relationship between the focus point and the coordinate system is also determined.