公开(公告)号：US20060293593A1

公开(公告)日：2006-12-28

申请号：US11130423

申请日：2005-05-16

申请人： Assaf Govari ,  Andres Altmann ,  Yaron Ephrath

发明人： Assaf Govari ,  Andres Altmann ,  Yaron Ephrath

IPC分类号： A61B5/05

CPC分类号： A61B34/20 ,  A61B90/39 ,  A61B2034/2051 ,  A61B2090/3958 ,  A61B2090/397 ,  A61B2090/3975 ,  A61B2090/3983

摘要： A method for tracking a position of a sensor includes generating a periodic magnetic field in a vicinity of the sensor, the field having a positive polarity phase and a negative polarity phase with respective constant positive and negative amplitudes. First and second field measurement signals are produced responsively to the magnetic field at the sensor during the positive and negative polarity phases, respectively. The position of the sensor is determined responsively to the first and second field measurement signals.

摘要翻译： 用于跟踪传感器位置的方法包括在传感器附近产生周期性磁场，该场具有正极性相位和负极性相位，具有相应恒定的正和负幅度。 第一和第二场测量信号分别在正极和负极性相位期间响应于传感器处的磁场产生。 响应于第一和第二场测量信号确定传感器的位置。

公开(公告)号：US20060241397A1

公开(公告)日：2006-10-26

申请号：US11063094

申请日：2005-02-22

申请人： Assaf Govari ,  Andres Altmann ,  Yaron Ephrath

发明人： Assaf Govari ,  Andres Altmann ,  Yaron Ephrath

IPC分类号： A61B5/05

CPC分类号： A61B34/20 ,  A61B5/062 ,  A61B90/36 ,  A61B2034/2051 ,  A61B2090/3958

摘要： A method for position tracking includes attaching a location pad to a body of a subject and introducing into the body of the subject a first position transducer. A procedure is performed on the body of the subject using a medical tool, to which a second position transducer is fixed. Magnetic fields are transmitted between the location pad and first and second position transducers. Responsively to the magnetic fields, first and second position signals are generated. The signals are indicative of coordinates of the first and second position transducers relative to the location pad. The first and second position signals are processed so as to determine a disposition of the tool relative to the first position transducer.

摘要翻译： 一种用于位置跟踪的方法包括将定位垫附接到对象的身体并将第一位置换能器引入到对象的身体中。 使用医疗工具对被检体的身体进行程序，固定有第二位置传感器。 磁场在定位焊盘和第一和第二位置传感器之间传输。 响应于磁场，产生第一和第二位置信号。 这些信号指示第一和第二位置换能器相对于位置垫的坐标。 对第一和​​第二位置信号进行处理，以确定工具相对于第一位置传感器的布置。