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    Model-based correction of position measurements
    41.
    发明授权
    Model-based correction of position measurements 有权
    基于模型的位置测量校正

    公开(公告)号：US07962195B2

    公开(公告)日：2011-06-14

    申请号：US11421519

    申请日：2006-06-01

    Applicant: Assaf Govari ,  Andres Claudio Altmann ,  Yaron Ephrath

    Inventor： Assaf Govari ,  Andres Claudio Altmann ,  Yaron Ephrath

    IPC: A61B5/05

    CPC classification number: A61B5/06 ,  A61B1/00 ,  A61B5/065 ,  A61B8/0833 ,  A61B8/0841 ,  A61B2034/2053

    Abstract: Visualization of a probe when impedance-based measurement technology is being used is improved by stabilizing a displayed image of the probe or catheter. Using a model of reasonable probe shapes and a matching algorithm, an erroneous probe image is adjusted so that it assumes a realistic shape on a display. A range of positional variations is also incorporated in the model. When an apparent probe position exceeds a permissible range of motion, the probe image is constrained to a realistic position.

    Abstract translation: 通过稳定探针或导管的显示图像可以改善使用基于阻抗的测量技术时探测器的可视化。 使用合理的探针形状和匹配算法的模型，调整错误的探针图像，使其在显示器上呈现逼真的形状。 模型中还包含一系列位置变化。 当表观探头位置超过允许的运动范围时，探头图像被限制到一个现实的位置。

    Lesion assessment by pacing
    42.
    发明授权
    Lesion assessment by pacing 有权
    通过起搏进行病变评估

    公开(公告)号：US07918850B2

    公开(公告)日：2011-04-05

    申请号：US11357512

    申请日：2006-02-17

    Applicant: Assaf Govari ,  Andres Claudio Altmann ,  Yaron Ephrath

    Inventor： Assaf Govari ,  Andres Claudio Altmann ,  Yaron Ephrath

    IPC: A61B18/18

    CPC classification number: A61B18/1492 ,  A61B34/20 ,  A61B2017/00084 ,  A61B2034/2051 ,  A61B2090/378 ,  A61B2090/3782

    Abstract: Monitoring intracardiac ablation progress in near real time is accomplished by evaluating capture of a pacing signal while ablation energy is concurrently directed to a target site. Sufficiency of ablation is indicated by failure of signal capture at a maximum predetermined pacing voltage. A common electrode in a cardiac catheter is simultaneously used to test pacing capture and to deliver ablation energy.

    Abstract translation: 通过评估起搏信号的捕获来实现近乎实时的心内切除进展，同时消融能量同时指向目标部位。 消融的充分性由最大预定起搏电压下的信号捕获失败指示。 心脏导管中的共同电极同时用于测试起搏捕获并传递消融能量。

    Registration of electro-anatomical map with pre-acquired image using ultrasound
    45.
    发明授权
    Registration of electro-anatomical map with pre-acquired image using ultrasound 有权
    使用超声对预先获取的图像进行电解剖图的注册

    公开(公告)号：US07517318B2

    公开(公告)日：2009-04-14

    申请号：US11114801

    申请日：2005-04-26

    Applicant: Andres Claudio Altmann ,  Assaf Govari

    Inventor： Andres Claudio Altmann ,  Assaf Govari

    IPC: A61B8/00 ,  A61B5/04

    CPC classification number: G06T19/00 ,  A61B5/0035 ,  A61B5/0037 ,  A61B5/042 ,  A61B5/06 ,  A61B5/062 ,  A61B5/7285 ,  A61B5/743 ,  A61B6/488 ,  A61B6/503 ,  A61B6/504 ,  A61B6/5247 ,  A61B6/541 ,  A61B8/06 ,  A61B8/0883 ,  A61B8/0891 ,  A61B8/12 ,  A61B8/4416 ,  A61B8/4483 ,  A61B8/483 ,  A61B18/1492 ,  G06F19/00 ,  G06T17/00 ,  G06T2210/41

    Abstract: A system and method for imaging a target in a patient's body includes the steps of providing a pre-acquired image of the target and placing a catheter having a position sensor, an ultrasonic imaging sensor and at least one electrode, in the patient's body. Positional information of a portion of the catheter in the patient's body is determined using the position sensor and electrical activity data-points of a surface of the target are acquired using the at least one electrode. An ultrasonic image of the target is obtained using the ultrasonic imaging sensor and positional information for the electrical activity data-points of the surface of the target is determined. An electrophysiological map of the target is generated based on the electrical activity data-points and the positional information for the electrical activity data-points. Positional information for any pixel of the ultrasonic image of the target is determined and the pre-acquired image and the electrophysiological map are registered with the ultrasonic image. The registered pre-acquired image, electrophysiological map and ultrasonic image are displayed on a display.

    Abstract translation: 用于对患者体内的靶进行成像的系统和方法包括以下步骤：提供目标的预获取图像，并将具有位置传感器，超声波成像传感器和至少一个电极的导管放置在患者体内。 使用位置传感器确定导管在患者体内的一部分的位置信息，并且使用至少一个电极获取目标表面的电活动数据点。 使用超声波成像传感器获得目标的超声波图像，并且确定目标表面的电活动数据点的位置信息。 基于电活动数据点和电活动数据点的位置信息生成目标的电生理图。 确定目标的超声波图像的任何像素的位置信息，并且将预取得图像和电生理图用超声波图像进行登记。 登记的预取图像，电生理图和超声波图像显示在显示器上。

    ULTRASOUND CATHETER CALIBRATION WITH ENHANCED ACCURACY
    47.
    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。

    Monitoring and tracking bipolar ablation
    49.
    发明授权
    Monitoring and tracking bipolar ablation 有权

    公开(公告)号：US10456196B2

    公开(公告)日：2019-10-29

    申请号：US13326456

    申请日：2011-12-15

    Applicant: Assaf Govari ,  Andres Claudio Altmann ,  Yaron Ephrath

    Inventor： Assaf Govari ,  Andres Claudio Altmann ,  Yaron Ephrath

    IPC: A61B18/14

    Abstract: Methods and systems treat abnormal cardiac electrical activity employing a probe having first and second ablation electrodes disposed on a distal portion of the probe and a sensing electrode disposed between the first and second ablation electrodes, bringing the probe into contact with cardiac tissue, and applying energy through the first and second ablation electrodes to ablate target tissue along an ablation path, monitoring cardiac electrical activity using the sensing electrode to detect the cardiac electrical activity. After making an observation that the cardiac electrical activity is no longer detectable by the sensing electrode, energy application is terminated.

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