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    • 3. 发明申请
    • SHIELDED SURGICAL NAVIGATION SYSTEM THAT DETERMINES THE POSITION AND ORIENTATION OF THE TRACKED OBJECT WITH REAL AND VIRTUAL DIPOLES
    • 用实际和虚拟DIPOL确定跟踪对象的位置和方向的屏蔽外科导航系统
    • WO2007117951A3
    • 2008-01-03
    • PCT/US2007064753
    • 2007-03-23
    • STRYKER CORPWU CHUNWU
    • WU CHUNWU
    • A61B19/00G01S19/04G01S19/07
    • G01B7/003A61B34/20A61B90/36A61B2034/2051A61B2034/2074A61B2090/3958A61B2090/3975
    • A system for determining the position and orientation of a tracked object by measuring electromagnetic energy. The system includes a shield (164) of magnetic permeable material (30) positioned on one side of the object to be tracked. A transmitter emits the electromagnetic energy and there is a tracker sensor (122). One of the transmitter (180) or tracker sensor is attached to the object to be tracked. A correction sensor is at fixed location relative to the transmitter assembly. Both sensors assemblies measure the electromagnetic energy emitted by the transmitter. Based on the energy measured by the correction sensor, the location of a virtual dipole (B) that mirrors the transmitter (A), the real dipole, on the opposite side of the shield is determined. Based on the positions of the real and virtual dipoles and the energy measured by the tracker sensor, the position and orientation of the tracker sensor (P) relative to the transmitter is determined.
    • 一种用于通过测量电磁能来确定被跟踪物体的位置和姿态的系统。 该系统包括位于待跟踪物体的一侧上的可透磁材料(30)的屏蔽(164)。 发射器发射电磁能量,并且存在跟踪器传感器(122)。 发射器(180)或跟踪器传感器中的一个连接到要跟踪的对象。 校正传感器位于相对于发射器组件的固定位置。 两个传感器组件都测量发射机发出的电磁能量。 基于由校正传感器测量的能量,确定在屏蔽的相对侧上反射发射器(A)的虚拟偶极子(B)的位置,即真实的偶极子。 基于真实和虚拟偶极子的位置以及由跟踪器传感器测量的能量,确定跟踪器传感器(P)相对于发射器的位置和方位。
    • 7. 发明申请
    • SHIELDED SURGICAL NAVIGATION SYSTEM THAT DETERMINES THE POSITION AND ORIENTATION OF THE TRACKED OBJECT WITH REAL AND VIRTUAL DIPOLES
    • 用实际和虚拟DIPOL确定跟踪对象的位置和方向的屏蔽外科导航系统
    • WO2007117951A2
    • 2007-10-18
    • PCT/US2007/064753
    • 2007-03-23
    • STRYKER CORPORATIONWU, Chunwu
    • WU, Chunwu
    • A61B19/00G01S1/02
    • G01B7/003A61B34/20A61B90/36A61B2034/2051A61B2034/2074A61B2090/3958A61B2090/3975
    • A system for determining the position and orientation of a tracked object by measuring electromagnetic energy. The system includes a shield of magnetic permeable material positioned on one side of the object to be tracked. A transmitter emits the electromagnetic energy and there is a tracker sensor. One of the transmitter or tracker sensor is attached to the object to be tracked. A correction sensor is at fixed location relative to the transmitter assembly. Both sensors assemblies measure the electromagnetic energy emitted by the transmitter. Based on the energy measured by the correction sensor, the location of a virtual dipole that mirrors the transmitter, the real dipole, on the opposite side of the shield is determined. Based on the positions of the real and virtual dipoles and the energy measured by the tracker sensor, the position and orientation of the tracker sensor relative to the transmitter is determined.
    • 一种用于通过测量电磁能来确定被跟踪物体的位置和姿态的系统。 该系统包括位于被跟踪物体的一侧的可磁性渗透材料的屏蔽层。 发射器发射电磁能,并有一个跟踪传感器。 发射器或跟踪器传感器之一连接到要跟踪的对象。 校正传感器位于相对于发射器组件的固定位置。 两个传感器组件都测量发射机发出的电磁能量。 基于由校正传感器测量的能量,确定在屏蔽的相对侧上映射发射器的虚拟偶极子(真偶极子)的位置。 基于真实和虚拟偶极子的位置以及由跟踪器传感器测量的能量,确定跟踪器传感器相对于发射器的位置和方位。