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    Magnetically assisted pulmonary vein isolation
    1.
    发明授权
    Magnetically assisted pulmonary vein isolation 失效
    磁辅助肺静脉隔离

    公开(公告)号：US07008418B2

    公开(公告)日：2006-03-07

    申请号：US10435713

    申请日：2003-05-09

    申请人： Andrew F. Hall ,  Roger N. Hastings

    发明人： Andrew F. Hall ,  Roger N. Hastings

    IPC分类号： A61B18/18

    CPC分类号： A61B18/1492 ,  A61B34/73 ,  A61B2018/00214 ,  A61B2018/00273 ,  A61B2018/00375 ,  A61B2018/00898

    摘要： A method for forming an ablation pattern to electrically isolate a vessel having an ostium from a chamber formed within a patient for treatment of cardiac arrhythmia. The distal portion of a catheter is navigated to a chamber. An anchor member is deployed from the distal end of the catheter into the chamber, and the distal end is navigated into the ostium of the vessel, and temporarily secured in the vessel. An ablation member is deployed from the distal end of the catheter into the chamber and successively navigated into contact with tissue adjacent the ostium and ablating the tissue in contact with the ablation member to form a line of ablation. At least one of the navigating the distal portion of the catheter, navigating the anchor member and navigating the ablation member is performed by applying an external magnetic field to orient the device being navigated.

    摘要翻译： 一种用于形成消融图案以将具有口腔的血管与形成在患者体内的腔室电隔离以治疗心律失常的方法。 导管的远端部分导航到腔室。 锚定构件从导管的远端部署到腔室中，并且远端导航到血管的口中，并临时固定在血管中。 将消融部件从导管的远端部署到腔室中并且相继地导航到邻近口部的组织接触并且消融与消融部件接触的组织以形成消融线。 通过施加外部磁场来定向正在导航的装置来执行导航导管的远端部分，导航锚定构件和导航消融部件中的至少一个。

    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。

    Cardiac methods and system
    5.
    发明授权
    Cardiac methods and system 有权
    心脏方法和系统

    公开(公告)号：US06298257B1

    公开(公告)日：2001-10-02

    申请号：US09405314

    申请日：1999-09-22

    申请人： Andrew F. Hall ,  Roger N. Hastings ,  Walter M. Blume

    发明人： Andrew F. Hall ,  Roger N. Hastings ,  Walter M. Blume

    IPC分类号： A61B505

    CPC分类号： A61B5/06 ,  A61B5/042 ,  A61B5/061 ,  A61B5/062 ,  G06F19/3481 ,  G16H50/50

    摘要： A method of applying a magnetic medical device to the surface of an internal body structure, the medical device having a magnetically responsive element associated with its distal end, the method comprising applying a magnetic field to the distal end of the magnetic medical device to apply a measured and controlled force between the medical device and tissue to facilitate cardiac sensing, mapping, pacing, ablation, biopsying and other procedures. Contact is confirmed by the angle between the direction of the magnetic medical device and the applied magnetic field, and the contact force is controlled by controlling at least one of the magnetic field direction and the magnetic field strength.

    摘要翻译： 一种将磁性医疗装置应用于内部身体结构的表面的方法，所述医疗装置具有与其远端相关的磁性应答元件，所述方法包括向所述磁性医疗装置的远端施加磁场， 在医疗设备和组织之间测量和控制力，以促进心脏感测，映射，起搏，消融，活检和其他程序。 通过磁性医疗装置的方向与施加的磁场之间的角度来确认接触，并且通过控制磁场方向和磁场强度中的至少一个来控​​制接触力。

    Method of localizing medical devices
    9.
    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.

    Systems and methods for making and using a motor distally-positioned within a catheter of an intravascular ultrasound imaging system
    10.
    发明授权
    Systems and methods for making and using a motor distally-positioned within a catheter of an intravascular ultrasound imaging system 有权
    用于制造和使用远端定位在血管内超声成像系统的导管内的马达的系统和方法

    公开(公告)号：US08298149B2

    公开(公告)日：2012-10-30

    申请号：US12415724

    申请日：2009-03-31

    申请人： Roger N. Hastings ,  Michael J. Pikus ,  Tat-Jin Teo ,  Kevin D. Edmunds

    发明人： Roger N. Hastings ,  Michael J. Pikus ,  Tat-Jin Teo ,  Kevin D. Edmunds

    IPC分类号： A61B8/14

    CPC分类号： A61B8/12 ,  A61B8/445

    摘要： A catheter assembly for an intravascular ultrasound system includes an imaging core configured and arranged for inserting into a distal end of a lumen of a catheter. The imaging core includes at least one transducer mounted to a driveshaft and configured and arranged for transforming applied electrical signals to acoustic signals and also for transforming received echo signals to electrical signals. A motor is coupled to the driveshaft between the one or more transducers and the transformer. The motor includes a rotatable magnet and at least two magnetic field windings disposed around at least a portion of the magnet.

    摘要翻译： 用于血管内超声系统的导管组件包括被配置和布置成用于插入到导管的内腔的远端中的成像芯。 成像芯包括安装到驱动轴的至少一个换能器，并被配置和布置成将施加的电信号转换成声信号，并且还用于将接收的回波信号变换为电信号。 电动机在一个或多个换能器和变压器之间耦合到驱动轴。 电动机包括可旋转磁体和围绕磁体的至少一部分设置的至少两个磁场绕组。