利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

102 条记录 (耗时 0.029 秒)

    Efficient magnet system for magnetically-assisted surgery
    3.
    发明授权
    Efficient magnet system for magnetically-assisted surgery 失效
    用于磁辅助手术的高效磁铁系统

    公开(公告)号：US06330467B1

    公开(公告)日：2001-12-11

    申请号：US09287397

    申请日：1999-04-06

    申请人： Francis M. Creighton, IV ,  Andrew F. Hall ,  Roger N. Hastings ,  Rogers C. Ritter

    发明人： Francis M. Creighton, IV ,  Andrew F. Hall ,  Roger N. Hastings ,  Rogers C. Ritter

    IPC分类号： A61B505

    CPC分类号： A61B34/73 ,  A61B1/00158 ,  A61B34/70 ,  A61B90/36 ,  A61B2034/301 ,  A61B2034/733 ,  A61B2034/742 ,  A61M25/0127

    摘要： A system for magnetically assisted surgery includes a magnetic support structure, a patient support structure and a magnet having at least four poles attached to the magnetic support structure so that the magnet provides a near-field magnetic field in an operating region of a patient supported by the patient support structure. The magnet is moveable so that the direction of the magnetic field lines in the operating region is adjustable. The magnet may include a pair of essentially semicircular half-segments permanently magnetized and joined in an extremely stable disk configuration. The magnetic field and gradient field provided by the magnet is such that movement of the disk in one plane combined with rotation of the disk is sufficient to orient the magnetic field during surgical use, thereby reducing interference to medical imaging devices needed during surgery. An example of a medical delivery device that may be used for surgery in conjunction with this system is a flexible endoscope or catheter having a series of magnetically permeable rings.

    摘要翻译： 一种用于磁辅助手术的系统包括磁性支撑结构，患者支撑结构和具有至少四个磁极附接到磁性支撑结构的磁体，使得磁体在患者的操作区域中提供近场磁场， 患者支撑结构。 磁体是可移动的，使得操作区域中的磁场线的方向是可调节的。 磁体可以包括一对基本上半圆形的半段，其永久地磁化并以非常稳定的磁盘配置连接。 由磁体提供的磁场和梯度场使得在一个平面中与盘的旋转相结合的盘的移动足以在手术使用期间定向磁场，从而减少对手术期间所需的医学成像装置的干扰。 结合该系统可用于手术的医疗输送装置的实例是具有一系列导磁环的柔性内窥镜或导管。

    Method of localizing medical devices
    5.
    发明授权
    Method of localizing medical devices 失效

    公开(公告)号：US07020512B2

    公开(公告)日：2006-03-28

    申请号：US10047450

    申请日：2002-01-14

    申请人： Rogers C. Ritter ,  Torrey Munger ,  John Rauch ,  Andrew F. Hall ,  Roger N. Hastings

    发明人： Rogers C. Ritter ,  Torrey Munger ,  John Rauch ,  Andrew F. Hall ,  Roger N. Hastings

    IPC分类号： A61B6/00

    CPC分类号： A61B5/06 ,  A61B5/062

    摘要： A method of localizing a medical device inside a patient's body, the method comprising: transmitting ac magnetic signals between a plurality of points of known location outside of the patient's body and a plurality of points on the medical device inside the patient's body, the signals transmitted between at least some of the points comprising at least two different frequencies; and receiving the transmitted ac magnetic signals and processing the received signals to determine the position of the points on the medical device, and thus the location of the medical device, this processing including correcting for the affects of metal in the vicinity by using the transmitted and received signals at different frequencies. In an alternate embodiment, a reference device is provided inside the patients' body, and the medical device is localized relative to the reference catheter. The use of signals comprising at least two frequencies may or may not be used in this relative localization embodiment, but preferably is used at least to localize the reference catheter.

    VARIABLE MAGNETIC MOMENT MR NAVIGATION
    6.
    发明申请
    VARIABLE MAGNETIC MOMENT MR NAVIGATION 失效
    可变磁性导弹导航

    公开(公告)号：US20080319303A1

    公开(公告)日：2008-12-25

    申请号：US12145419

    申请日：2008-06-24

    申请人： Michael E. Sabo ,  Rogers C. Ritter ,  Roger N. Hastings ,  Raju R. Viswanathan

    发明人： Michael E. Sabo ,  Rogers C. Ritter ,  Roger N. Hastings ,  Raju R. Viswanathan

    IPC分类号： A61B5/055

    CPC分类号： A61B5/055 ,  A61B5/06

    摘要： A method of navigating a medical device in an operating region in a subject. The method includes applying a magnetic field to the operating region and changing the magnetic moment of the medical device by selectively changing a physical condition of at least one magnet element in the medical device to change the orientation of the device with respect to the applied magnetic field.

    摘要翻译： 一种在受试者的操作区域中导航医疗装置的方法。 该方法包括通过选择性地改变医疗装置中的至少一个磁体元件的物理状态来改变医疗装置的磁矩并改变相对于所施加的磁场的装置的取向来改变操作区域的磁场 。

    Variable magnetic moment MR navigation
    7.
    发明授权
    Variable magnetic moment MR navigation 失效
    可变磁矩MR导航

    公开(公告)号：US07389778B2

    公开(公告)日：2008-06-24

    申请号：US10834579

    申请日：2004-04-29

    申请人： Michael E. Sabo ,  Rogers C. Ritter ,  Roger N. Hastings ,  Raju R. Viswanathan

    发明人： Michael E. Sabo ,  Rogers C. Ritter ,  Roger N. Hastings ,  Raju R. Viswanathan

    IPC分类号： A61B19/00 ,  A61B17/00

    CPC分类号： A61B5/055 ,  A61B5/06

    摘要： A method of navigating a medical device in an operating region in a subject. The method includes applying a magnetic field to the operating region and changing the magnetic moment of the medical device by selectively changing a physical condition of at least one magnet element in the medical device to change the orientation of the device with respect to the applied magnetic field.

    摘要翻译： 一种在受试者的操作区域中导航医疗装置的方法。 该方法包括通过选择性地改变医疗装置中的至少一个磁体元件的物理状态来改变医疗装置的磁矩并改变相对于所施加的磁场的装置的取向来改变操作区域的磁场 。

    Magnetic navigation of medical devices in magnetic fields
    8.
    发明授权
    Magnetic navigation of medical devices in magnetic fields 有权
    医疗器械在磁场中的磁导航

    公开(公告)号：US08162920B2

    公开(公告)日：2012-04-24

    申请号：US10831533

    申请日：2004-04-23

    申请人： Rogers C. Ritter ,  Raju R. Viswanathan ,  Roger N. Hastings

    发明人： Rogers C. Ritter ,  Raju R. Viswanathan ,  Roger N. Hastings

    IPC分类号： A61M31/00 ,  A61M25/00

    CPC分类号： A61B1/00147 ,  A61M25/0127

    摘要： A method of turning a medical device with the assistance of an externally applied magnetic field, in a direction with a component in a plane perpendicular to the direction of the externally applied magnetic field. The method includes applying first torque to the distal end of the medical device by creating magnetic moment at the distal end of the medical device, and applying a second torque to the distal end of the medical device. The second torque may be created by creating a second magnetic moment at the distal end of the device spaced from the first, by using an electrostrictive device, by using a stylette inserted into the device, by using a fluid-driven shaped tube, or otherwise.

    摘要翻译： 在外部施加的磁场的帮助下，沿与垂直于外部施加的磁场的方向的平面中的分量的方向转动医疗装置的方法。 该方法包括通过在医疗装置的远端产生磁矩并将第二扭矩施加到医疗装置的远端，将第一扭矩施加到医疗装置的远端。 第二扭矩可以通过使用电致伸缩装置通过使用插入到装置中的通孔，通过使用流体驱动的成形管或以其他方式通过使用流动驱动的成形管产生与装置的远端隔开的第二磁矩来产生 。