Method and system for planning/guiding alterations to a bone
    51.
    发明授权
    Method and system for planning/guiding alterations to a bone 有权
    规划/指导骨骼改变的方法和系统

    公开(公告)号:US08265790B2

    公开(公告)日:2012-09-11

    申请号:US12410884

    申请日:2009-03-25

    摘要: A computer-assisted surgery system for planning/guiding alterations to a bone in surgery, comprises a trackable member adapted to be secured to the bone. The trackable member has a first inertial sensor unit producing orientation-based data for at least two degrees of freedom in orientation of the trackable member A positioning block is adapted to be secured to the bone, with at least an orientation of the positioning block being adjustable once the positioning block is secured to the bone to reach a selected orientation at which the positioning block is used to guide tools in altering the bone. The positioning block has a second inertial sensor unit producing orientation-based data for at least two degrees of freedom in orientation of the positioning block. A processing system providing an orientation reference associating the bone to the trackable member comprises a signal interpreter for determining an orientation of the trackable member and of the positioning block from the orientation-based data. A parameter calculator calculates alteration parameters related to an actual orientation of the positioning block with respect to the bone as a function of the orientation reference and of the orientation of the positioning block.

    摘要翻译: 用于规划/指导对手术中的骨骼的改变的计算机辅助手术系统包括适于固定到骨骼上的可跟踪构件。 可跟踪构件具有第一惯性传感器单元,其产生用于可追踪构件的取向的至少两个自由度的基于定向的数据。定位块适于固定到骨骼,至少定位块的取向可调节 一旦定位块被固定到骨头上以达到选定的方位,在该方向上定位块用于引导改变骨骼的工具。 该定位块具有第二惯性传感器单元,该第二惯性传感器单元产生用于定位块的取向的至少两个自由度的基于取向的数据。 提供将骨骼与可跟踪构件相关联的定向参考的处理系统包括信号解释器,用于根据基于取向的数据确定可跟踪构件和定位块的取向。 参数计算器计算与定位块相对于骨骼的实际方向相关的改变参数作为定位参考的方向参考和定位块的取向的函数。

    BONE AND TOOL TRACKING WITH MEMS IN COMPUTER-ASSISTED SURGERY
    52.
    发明申请
    BONE AND TOOL TRACKING WITH MEMS IN COMPUTER-ASSISTED SURGERY 审中-公开
    骨骼和工具跟踪与计算机辅助手术中的MEMS

    公开(公告)号:US20120220859A1

    公开(公告)日:2012-08-30

    申请号:US13035264

    申请日:2011-02-25

    IPC分类号: A61B5/00 A61B17/56

    摘要: A method tracks a tool with respect to a bone in computer-assisted surgery. A reference tracker with a MEMS unit is secured to the bone. The tracker outputs data relating to its orientation. A tool provided with a MEMS unit and secured to the bone is preset with an initial orientation. The tool outputs tracking data related to orientation of the tool once initialized. A trackable frame of reference relating the bone to the orientation of the tracker is created. The MEMS unit of the tool is initialized. A relation between the initial orientation of the tool and the orientation of the tracker at initialization of the MEMS unit of the tool is recorded. Orientational data of the tool relative to the frame of reference of the bone calculated using the relation is displayed. A computer-assisted surgery system for tracking a tool with respect to a bone after an initialization of a MEMS unit is also described.

    摘要翻译: 一种方法在计算机辅助手术中跟踪骨骼的工具。 具有MEMS单元的参考跟踪器固定到骨骼上。 跟踪器输出与其方向有关的数据。 具有MEMS单元并固定到骨头上的工具预先设置有初始取向。 一旦初始化,该工具将输出与刀具取向相关的跟踪数据。 创建将骨骼与跟踪器的取向相关联的可跟踪的参考框架。 该工具的MEMS单元被初始化。 记录工具的初始取向与工具的MEMS单元初始化时的跟踪器取向的关系。 显示相对于使用该关系计算的骨骼的参照系的工具的定向数据。 还描述了在MEMS单元的初始化之后用于跟踪相对于骨骼的工具的计算机辅助手术系统。

    Leg alignment for surgical parameter measurement in hip replacement surgery
    53.
    发明授权
    Leg alignment for surgical parameter measurement in hip replacement surgery 有权
    髋关节置换手术中外科手术参数测量的腿对齐

    公开(公告)号:US07955280B2

    公开(公告)日:2011-06-07

    申请号:US11421572

    申请日:2006-06-01

    IPC分类号: A61B5/103 A61B5/117

    摘要: A CAS system and method comprises a first reference in fixed relation with the pelvis and a registration tool. A sensor apparatus tracks the first reference and tool. A controller unit receives tracking data for the first reference and tool. A calculator tracks the pelvic frame of reference, and the tool to produce a femoral frame of reference at two sequential operative steps. A reference orientation adjustor receives tracking data for the pelvic frame of reference to orient the femoral frame of reference in a reference orientation with respect to the pelvic frame of reference, and to produce a reference adjustment value as a function of the reference orientation. A surgical parameter calculator receives tracking data from the tool to calculate surgical parameters as a function of the reference adjustment value.

    摘要翻译: CAS系统和方法包括与骨盆固定关系的第一参考和注册工具。 传感器装置跟踪第一参考和工具。 控制器单元接收第一参考和工具的跟踪数据。 计算机跟踪骨盆参考框架,以及用于在两个相继的操作步骤产生股骨框架的工具。 参考方向调整器接收骨盆参考框架的跟踪数据,以相对于骨盆参照系的参考方向定向股骨参考系,并且产生作为参考方向的函数的参考调整值。 手术参数计算器从工具接收跟踪数据,以根据参考调整值计算手术参数。

    CAS SYSTEM FOR CONDYLE MEASUREMENT
    55.
    发明申请
    CAS SYSTEM FOR CONDYLE MEASUREMENT 有权
    CAS系统测量

    公开(公告)号:US20070232959A1

    公开(公告)日:2007-10-04

    申请号:US11627109

    申请日:2007-01-25

    IPC分类号: A61B5/103

    摘要: A method of determining a reference point on condyles of a femur uses a computer assisted surgery system having a digitizer with perpendicular first and second planar surfaces, the digitizer being locatable and trackable in three dimensional space by the computer assisted surgery system. A digitized plane is created using the digitizer, the digitized plane being a posterior plane and/or a distal plane of the condyles. The posterior plane and the distal plane are respectively defined by the first and second planar surfaces of the digitizer. A location of the reference point in the digitized plane is then determined using the computer assisted surgical system. The reference point is a most remote point of the femur within the digitized plane.

    摘要翻译: 确定股骨髁上的参考点的方法使用具有数字化仪的计算机辅助手术系统,该数字化仪具有垂直的第一和第二平面,数字化仪可由计算机辅助手术系统在三维空间中定位和追踪。 使用数字化仪产生数字化平面,数字化平面是髁的后平面和/或远侧平面。 后平面和远侧平面分别由数字化仪的第一和第二平面表面限定。 然后使用计算机辅助外科系统确定数字化平面中参考点的位置。 参考点是数字化平面内股骨的最远点。