Instrument navigation in computer-assisted hip surgery

    公开(公告)号:US10980645B2

    公开(公告)日:2021-04-20

    申请号:US14934894

    申请日:2015-11-06

    Abstract: A computer-assisted surgery system comprises a calibrating instrument adapted to be applied to a pelvis in a known manner, and a surgical instrument. A computer-assisted processor unit operating a surgical assistance procedure and comprises at least one portable inertial sensor unit configured to be connected to the at least one calibrating instrument and the at least one surgical instrument, the portable inertial sensor unit outputting readings representative of its orientation. A geometrical relation data module provides a geometrical relation data between the orientation of the portable inertial sensor unit, of the calibrating instrument and of the surgical instrument. A coordinate system module sets a coordinate system of the pelvis in which an anterior-posterior axis of the pelvis is generally in a direction of gravity, and in which a medio-lateral axis of the pelvis is obtained from readings of the at least one portable inertial sensor unit on the calibrating instrument using the geometrical relation data therebetween. A tracking module tracks movements of the at least one surgical instrument relative to the coordinate system using readings from the inertial sensor unit on the surgical instrument using the geometrical relation data therebetween, and calculates navigation data for the movements, the navigation data relating the orientation of the surgical instrument to the orientation of the pelvis. An interface outputs the navigation data.

    Method and system for tracking objects in computer-assisted surgery

    公开(公告)号:US10166083B2

    公开(公告)日:2019-01-01

    申请号:US15681804

    申请日:2017-08-21

    Applicant: ORTHOSOFT INC.

    Abstract: A computer-assisted surgery system comprises instruments adapted to be used to perform tasks related to surgery. A reference device is in a fixed relation to a bone. A rotating magnet creates a magnetic field plane, the rotating magnet being connected to one of the instrument and the reference device. A magnetometer on the other of the instrument and the reference device produces signals as a function of at least its orientation relative to the magnetic field plane. A processing unit tracks said orientation of the instrument relative to the bone using said signals from the magnetometer subjected to the magnetic field plane.

    METHOD AND SYSTEM FOR CREATING FRAME OF REFERENCE FOR CAS WITH INERTIAL SENSORS
    5.
    发明申请
    METHOD AND SYSTEM FOR CREATING FRAME OF REFERENCE FOR CAS WITH INERTIAL SENSORS 审中-公开
    用于创建具有惯性传感器的CAS参考框架的方法和系统

    公开(公告)号:US20140031829A1

    公开(公告)日:2014-01-30

    申请号:US13954279

    申请日:2013-07-30

    Abstract: A digitizer device comprises an elongated body and legs connected to the elongated body. At least one joint is between the legs and the elongated body such that free ends of the legs are displaceable relative to one another. An inertial sensor unit is connected to the elongated body, the inertial sensor unit having a preset orientation aligned with the elongated body. A table reference device comprises a body adapted to be fixed to an operating table. An inertial sensor unit is with a preset orientation related to the operating table. A patient coordinate system comprising orientation data obtained from the inertial sensor units of the digitizer device and the table reference device

    Abstract translation: 数字化仪装置包括细长体和连接到细长体的腿。 至少一个关节在腿和细长体之间,使得腿的自由端相对于彼此可移位。 惯性传感器单元连接到细长主体,惯性传感器单元具有与细长主体对准的预定方向。 桌子参考装置包括适于固定在操作台上的主体。 惯性传感器单元具有与操作台相关的预设方向。 一种患者坐标系,包括从数字化仪装置的惯性传感器单元和表参考装置获得的取向数据

    Hip replacement in computer-assisted surgery
    6.
    发明授权
    Hip replacement in computer-assisted surgery 有权
    髋关节置换术在计算机辅助手术中

    公开(公告)号:US09554863B2

    公开(公告)日:2017-01-31

    申请号:US14303099

    申请日:2014-06-12

    CPC classification number: A61B34/73 A61B17/1666 A61B34/10 A61B34/20 A61F2/4609

    Abstract: A system for calculating a position and orientation of an acetabular cup in computer-assisted surgery comprises a first trackable reference secured to a pelvis, with a frame of reference being associated with the first trackable reference. A device is positionable between a femoral neck and the acetabulum of the pelvis in a known relation, the device having a second trackable reference. Sensors track the trackable references for position and orientation. A position/orientation calculator calculates a position and orientation of the frame of reference and of the device and for determining an orientation of the neck axis with respect to the frame of reference from the known relation at a desired position of the femur. An implant position/orientation calculator provides cup implanting information with respect to the orientation of said neck axis as a function of the tracking for position and orientation of at least the first trackable reference.

    Abstract translation: 用于计算计算机辅助手术中的髋臼杯的位置和取向的系统包括固定到骨盆的第一可跟踪参考,其中参考系与第一可追踪参考相关联。 一种装置可以以已知的关系定位在股骨颈与骨盆的髋臼之间,该装置具有第二可追踪参考。 传感器跟踪可追踪的位置和方位。 位置/姿态计算器计算参考框架和装置的位置和方位,并且用于根据在股骨的期望位置处的已知关系来确定颈部轴线相对于参考系的取向。 植入物位置/取向计算器提供相对于所述颈部轴线的取向的杯子注入信息,作为至少第一可追踪参考物的位置和取向的跟踪的函数。

    METHOD AND DEVICE FOR CUP IMPLANTING USING INERTIAL SENSORS
    7.
    发明申请
    METHOD AND DEVICE FOR CUP IMPLANTING USING INERTIAL SENSORS 审中-公开
    使用惯性传感器进行印刷的方法和装置

    公开(公告)号:US20160220318A1

    公开(公告)日:2016-08-04

    申请号:US15013507

    申请日:2016-02-02

    Applicant: ORTHOSOFT INC.

    Abstract: A computer-assisted surgery (CAS) system comprises a cup implanting device including a shaft having a tooling end and a handle end with a handle for being manipulated, the shaft having a longitudinal axis, the tooling end adapted to support a cup for being received in an acetabulum of a patient, and a rotation indicator having a visual guide representative of a device plane, wherein the device plane is in a known position and orientation relative to a center of the cup on the tooling end. A CAS processing unit includes at least one inertial sensor unit connected to the cup implanting device, the inertial sensor unit outputting three-axes readings and having a virtual preset orientation related to a reference axis of a pelvis of the patient, the virtual preset orientation being based on pre-operative imaging specific to the pelvis of the patient, the reference axis of the pelvis passing through a center of rotation of said acetabulum of the pelvis and through a reference landmark of the pelvis, wherein an instant three-axis orientation of the longitudinal axis of the cup implanting device is trigonometrically known relatively to the reference axis when the cup is in the acetabulum of the patient and the device plane passes through the reference landmark via the visual guide, the instant three-axis orientation used for calibrating the inertial sensor unit on the cup implanting device relative to the pelvis.

    Abstract translation: 计算机辅助手术(CAS)系统包括杯子植入装置,其包括具有工具端的轴和具有用于被操纵的手柄的手柄端,所述轴具有纵向轴线,所述工具端适于支撑杯子以被接收 在患者的髋臼中,以及具有代表装置平面的视觉引导件的旋转指示器,其中,所述装置平面相对于所述工具端上的杯的中心处于已知位置和取向。 CAS处理单元包括连接到杯注入装置的至少一个惯性传感器单元,惯性传感器单元输出三轴读数并具有与患者骨盆的参考轴线相关的虚拟预设方向,虚拟预设方向为 基于对患者骨盆特异性的手术前成像,骨盆的参考轴线穿过骨盆的所述髋臼的旋转中心并通过骨盆的参考标记,其中立体三轴取向 当杯子位于患者的髋臼中并且装置平面经由视觉引导件穿过参考标记时,杯子植入装置的纵向轴线相对于参考轴线是三项式知道的,用于校准惯性的即时三轴取向 传感器单元在杯子植入装置相对于骨盆。

    PELVIC DIGITIZER DEVICE WITH INERTIAL SENSOR UNIT AND METHOD
    8.
    发明申请
    PELVIC DIGITIZER DEVICE WITH INERTIAL SENSOR UNIT AND METHOD 审中-公开
    具有惯性传感器单元的PELVIC DIGITIZER器件和方法

    公开(公告)号:US20140031722A1

    公开(公告)日:2014-01-30

    申请号:US13954288

    申请日:2013-07-30

    CPC classification number: A61B5/1077 A61B2034/2048 A61F2/4609 A61F2002/4668

    Abstract: A pelvic digitizer device comprises a body comprising: a shaft having a tooling end and a handle end with a handle for being manipulated. A visual guide is oriented in a reference plane of the digitizer device. A cup is connected to the tooling end and adapted to be received in an acetabulum of a patient. An inertial sensor unit is connected to the body, the inertial sensor unit having a preset orientation aligned with the reference plane.

    Abstract translation: 骨盆数字化仪装置包括主体,其包括:轴,其具有工具端和具有用于操纵的手柄的手柄端。 视觉指南指向数字转换器装置的参考平面。 杯子连接到工具端并适于被容纳在患者的髋臼中。 惯性传感器单元连接到主体,惯性传感器单元具有与参考平面对齐的预定方向。

    Leg length calculation in computer-assisted surgery

    公开(公告)号:US10413428B2

    公开(公告)日:2019-09-17

    申请号:US15013285

    申请日:2016-02-02

    Applicant: ORTHOSOFT INC.

    Abstract: A computer-assisted surgery (CAS) system outputs a leg length discrepancy and/or an offset between conditions. An inertial sensor unit is connected to an instrument(s) to produce readings representative of its orientation. A CAS processor unit has a coordinate system module for setting a pelvic coordinate system from readings of the inertial sensor unit, a tracking module for tracking an orientation of the instrument(s) relative to the pelvic coordinate system during movements thereof, and a geometrical relation data module for recording preoperatively a medio-lateral orientation of the instrument(s) representative of a medio-lateral axis of the legs and a distance between the legs, for recording after implant rejointing the medio-lateral orientation and the distance, and for calculating a leg length discrepancy and/or an offset, based on the distances and the medio-lateral orientations. An interface outputs the leg length discrepancy and/or the offset between leg conditions.

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