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    Catheter adapted for direct tissue contact and pressure sensing
    1.
    发明授权
    Catheter adapted for direct tissue contact and pressure sensing 有权
    导管适用于直接组织接触和压力感测

    公开(公告)号：US08900228B2

    公开(公告)日：2014-12-02

    申请号：US13463330

    申请日：2012-05-03

    Applicant: Debby Grunewald ,  Meir Bar-Tal

    Inventor： Debby Grunewald ,  Meir Bar-Tal

    IPC: A61B18/18 ,  A61B18/14 ,  A61B18/00 ,  A61B19/00

    CPC classification number: A61B18/1492 ,  A61B2018/00029 ,  A61B2018/00702 ,  A61B2018/00791 ,  A61B2018/00797 ,  A61B2018/00821 ,  A61B2018/00839 ,  A61B2018/00875 ,  A61B2034/2051 ,  A61B2090/065 ,  A61B2218/002

    Abstract: An irrigated ablation catheter adapted for direct tissue contact has micro-elements that provide more accurate sensing of tissue, including thermal and electrical properties for temperature and impedance and intracardiac ECG measurements. A pressure sensing assembly adds the ability to measure the force at the tip of the catheter as well as to have the micro-elements for accurately sensing tissue parameters. A system uses signals from the micro-elements (impedance, temperature, and ECG signals) as well as the measure of force or pressure at the tip electrode order to provide the operator with a means to control lesion depth, size, transmurality and to ablate tissue until successful treatment of an arrhythmia is achieved.

    Abstract translation: 适用于直接组织接触的灌洗消融导管具有提供更准确的组织感测的微元件，包括温度和阻抗的热和电特性以及心脏内心电图测量。 压力感测组件增加了测量导管尖端的力的能力，并且具有用于准确地感测组织参数的微元件。 系统使用来自微元件（阻抗，温度和ECG信号）的信号以及在尖端电极处的力或压力的测量，以向操作者提供控制病变深度，尺寸，透壁度和消融的手段 直到成功治疗心律失常才能实现。

    COMPENSATION FOR RESPIRATORY MOTION
    3.
    发明申请
    COMPENSATION FOR RESPIRATORY MOTION 有权
    呼吸运动补偿

    公开(公告)号：US20120197111A1

    公开(公告)日：2012-08-02

    申请号：US13017469

    申请日：2011-01-31

    Applicant: Meir Bar-Tal

    Inventor： Meir Bar-Tal

    IPC: A61B5/05

    CPC classification number: A61B5/113 ,  A61B5/063 ,  A61B5/721

    Abstract: A method, including: measuring first positions of a probe fixed at a first point in a body of a patient over at least a portion of a respiration cycle of the patient, and formulating respective indicators of a respiration state of the patient at the first positions. The method further includes generating a functional relationship between the first positions and the respective indicators and extracting parameters from the functional relationship. The method also includes moving the probe to a second point of the body, measuring second positions of the probe at the second point during a subsequent respiration cycle of the patient, and applying the parameters to the second positions so as to compensate for respiratory motion of the patient at the second point.

    Abstract translation: 一种方法，包括：在患者的呼吸循环的至少一部分上测量固定在患者体内的第一点的探针的第一位置，并且在第一位置处制定患者的呼吸状态的各个指示符 。 该方法还包括在第一位置和各个指示器之间产生功能关系，并从功能关系中提取参数。 该方法还包括将探针移动到身体的第二点，在患者的随后的呼吸循环期间在第二点测量探针的第二位置，并将参数应用于第二位置以补偿呼吸运动 病人在第二点。

    PROBE TRACKING USING MULTIPLE TRACKING METHODS
    4.
    发明申请
    PROBE TRACKING USING MULTIPLE TRACKING METHODS 有权
    使用多种跟踪方法的探测跟踪

    公开(公告)号：US20120150022A1

    公开(公告)日：2012-06-14

    申请号：US12967439

    申请日：2010-12-14

    Applicant: Meir Bar-Tal ,  Daniel Osadchy

    Inventor： Meir Bar-Tal ,  Daniel Osadchy

    IPC: A61B5/05

    CPC classification number: A61B5/063 ,  A61B5/061 ,  A61B2034/2051 ,  A61B2034/2065

    Abstract: A method, including: receiving an input indicative of respective apparent locations of a plurality of points disposed along a length of a probe inside a body of a subject, and applying a model of known mechanical properties of the probe to the respective apparent locations so as to minimize a first cost function with respect to shapes that can be assumed by the probe in the body. The method further includes choosing a shape responsively to the minimized first cost function and determining preliminary coordinates of the apparent locations responsively to the shape, minimizing a second cost function with respect to differences between the apparent locations and the preliminary coordinates, and generating corrected coordinates of the points along the length of the probe based on the minimized second cost function.

    Abstract translation: 一种方法，包括：接收指示沿着被检体内的探针长度设置的多个点的各个表观位置的输入，以及将所述探针的已知机械特性的模型应用于各个表观位置，以便 以使关于身体中探针可以假定的形状的第一成本函数最小化。 该方法还包括响应于最小化的第一成本函数选择形状并且响应于形状确定表观位置的初步坐标，使得相对于表观位置和初步坐标之间的差最小化第二成本函数，并且生成校正坐标 基于最小化第二成本函数的沿着探针长度的点。

    Resolution of magnetic dipole ambiguity in position tracking measurements
    5.
    发明授权
    Resolution of magnetic dipole ambiguity in position tracking measurements 有权
    位置跟踪测量中磁偶极模糊度的分辨率

    公开(公告)号：US08180430B2

    公开(公告)日：2012-05-15

    申请号：US11368243

    申请日：2006-03-03

    Applicant: Assaf Govari ,  Meir Bar-tal ,  Dudi Reznick ,  Doron Ludwin ,  Avi Shalgi ,  Yaron Keidar

    Inventor： Assaf Govari ,  Meir Bar-tal ,  Dudi Reznick ,  Doron Ludwin ,  Avi Shalgi ,  Yaron Keidar

    IPC: A61B5/05 ,  G01R33/00

    CPC classification number: A61B34/20 ,  A61B5/062 ,  A61B90/36 ,  A61B2034/2051 ,  A61B2090/3958

    Abstract: A method for position tracking includes using first and second field generators located at respective different first and second locations to generate respective first and second magnetic fields in a vicinity of first and second objects. The first and second fields are measured using first and second position sensors respectively associated with the first and second objects. First and second potential relative coordinates of the first object relative to the second object are calculated responsively to the first and second magnetic field. The potential relative coordinates are processed in order to determine a correct relative coordinate of the first object relative to the second object.

    Abstract translation: 一种用于位置跟踪的方法包括使用位于相应的不同第一和第二位置处的第一和第二场发生器来产生第一和第二对象附近的相应的第一和第二磁场。 使用分别与第一和第二物体相关联的第一和第二位置传感器测量第一和第二场。 响应于第一和第二磁场计算第一对象相对于第二对象的第一和第二潜在的相对坐标。 处理潜在的相对坐标以便确定第一对象相对于第二对象的正确的相对坐标。

    ULTRASOUND CATHETER CALIBRATION WITH ENHANCED ACCURACY
    8.
    发明申请
    ULTRASOUND CATHETER CALIBRATION WITH ENHANCED ACCURACY 有权
    超声波导管校准与增强精度

    公开(公告)号：US20080183075A1

    公开(公告)日：2008-07-31

    申请号：US11969541

    申请日：2008-01-04

    Applicant: Assaf Govari ,  Andres Claudio Altmann ,  Meir Bar-Tal ,  Dror Trumer

    Inventor： Assaf Govari ,  Andres Claudio Altmann ,  Meir Bar-Tal ,  Dror Trumer

    IPC: A61B8/14

    CPC classification number: A61B8/12 ,  A61B8/4254 ,  A61B8/587

    Abstract: An apparatus for calibration of a probe that includes a magnetic position sensor and an acoustic imaging device has a rigid mechanical framework. One or more field generators, fixed to the framework, generate a magnetic field of known spatial characteristics. An acoustic target assembly includes a phantom coupled to a motion mechanism, which is arranged to move the phantom in a known orbit relative to the framework. A jig, fixed to the framework, holds the probe within the magnetic field of the one or more field generators, in an orientation suitable for the imaging device to image the phantom. A processor processes position and image signals from the probe in order to calibrate coordinates of the imaging device relative to the position sensor.

    Abstract translation: 用于校准包括磁性位置传感器和声学成像装置的探针的装置具有刚性机械框架。 固定到框架的一个或多个场发生器产生已知空间特性的磁场。 声学目标组件包括耦合到运动机构的幻影，其被设置成相对于框架在已知轨道中移动体模。 固定到框架上的夹具将探针保持在一个或多个场发生器的磁场内，以适于成像装置对成像装置成像的取向。 处理器处理来自探针的位置和图像信号，以便校准成像装置相对于位置传感器的坐标。

    DISTORTION-IMMUNE POSITION TRACKING USING REDUNDANT MEASUREMENTS
    9.
    发明申请
    DISTORTION-IMMUNE POSITION TRACKING USING REDUNDANT MEASUREMENTS 有权
    使用冗余测量的失效 - 位置跟踪

    公开(公告)号：US20080033282A1

    公开(公告)日：2008-02-07

    申请号：US11462733

    申请日：2006-08-07

    Applicant: Meir Bar-Tal ,  Assaf Govari

    Inventor： Meir Bar-Tal ,  Assaf Govari

    IPC: A61B5/05 ,  G01R19/00

    CPC classification number: G01V3/081 ,  A61B5/062 ,  A61B34/20 ,  A61B2017/00725 ,  A61B2034/105 ,  A61B2034/2051 ,  A61B2034/2072 ,  A61B2090/0818 ,  G01D5/2086 ,  G01R33/025

    Abstract: A method for tracking a position of an object includes using a field sensor associated with the object to measure field strengths of magnetic fields generated by two or more field generators, wherein a measurement of at least one of the field strengths is subject to a distortion. Rotation-invariant location coordinates of the object are calculated responsively to the measured field strengths. Corrected location coordinates of the object are determined by applying to the rotation-invariant location coordinates a coordinate correcting function so as to adjust a relative contribution of each of the measured field strengths to the corrected location coordinates responsively to the distortion in the measured field strengths.

    Abstract translation: 用于跟踪对象位置的方法包括使用与对象相关联的场传感器来测量由两个或更多个场发生器产生的磁场的场强，其中场强中的至少一个的测量遭受失真。 响应于测量的场强计算对象的旋转不变位置坐标。 通过向旋转不变位置坐标应用坐标校正功能来确定对象的位置坐标的校正，以便响应于测量的场强中的失真来调整每个测量的场强与校正的位置坐标的相对贡献。

    Catheter adapted for direct tissue contact
    10.
    发明授权
    Catheter adapted for direct tissue contact 有权

    公开(公告)号：US10201385B2

    公开(公告)日：2019-02-12

    申请号：US13224291

    申请日：2011-09-01

    Applicant: Debby Grunewald ,  Meir Bar-Tal

    Inventor： Debby Grunewald ,  Meir Bar-Tal

    IPC: A61B18/14 ,  A61B18/00

    Abstract: An irrigated ablation catheter adapted for direct tissue contact has micro-elements that provide more accurate sensing of tissue, including thermal and electrical properties for temperature and impedance measurements. The micro-elements extend through a hollow chamber of an irrigated ablation electrode, and distal ends thereof can protrude outside of electrode or be flush with the electrode. The micro-elements have a protective guide tube in which components enabling temperature sensing or electrical sensing are encased.

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