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公开(公告)号：US20130158545A1
公开(公告)日：2013-06-20
申请号：US13326456
申请日：2011-12-15
IPC分类号： A61B18/14
CPC分类号： A61B18/1492 , A61B5/0422 , A61B5/0538 , A61B5/062 , A61B2018/00357 , A61B2018/00577
摘要： 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.
摘要翻译： 方法和系统使用具有设置在探针的远端部分上的第一和第二消融电极的探针和设置在第一和第二消融电极之间的感测电极来治疗异常心脏电活动，使探针与心脏组织接触并施加能量 通过第一和第二消融电极沿着消融路径烧蚀靶组织，使用感测电极监测心脏电活动以检测心脏电活动。 在观察到心电活动不再被检测电极检测到之后，能量施加终止。
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公开(公告)号：US09675411B2
公开(公告)日：2017-06-13
申请号：US12173150
申请日：2008-07-15
CPC分类号： A61B18/1492 , A61B18/1477 , A61B18/18 , A61B18/1815 , A61B2018/00577 , A61B2018/1425 , A61B2018/1861 , A61B2018/1869 , A61B2218/002 , A61N7/022 , Y10T29/49826
摘要： A medical device includes an insertion tube, having a distal end for insertion into a body of a subject. A distal tip is fixed to the distal end of the insertion tube and is coupled to apply energy to tissue inside the body. The distal tip has an outer surface with a plurality of perforations through the outer surface, which are distributed circumferentially and longitudinally over the distal tip. A lumen passes through the insertion tube and is coupled to deliver a fluid to the tissue via the perforations.
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公开(公告)号：US10688278B2
公开(公告)日：2020-06-23
申请号：US12627327
申请日：2009-11-30
摘要： A medical probe, consisting of a flexible insertion tube, having a distal end for insertion into a body cavity of a patient, and a distal tip, which is disposed at the distal end of the flexible insertion tube is configured to be brought into contact with tissue in the body cavity. The probe also includes a coupling member, which couples the distal tip to the distal end of the insertion tube and which consists of a tubular piece of an elastic material having a plurality of intertwined helical cuts therethrough along a portion of a length of the piece.
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公开(公告)号：US09295529B2
公开(公告)日：2016-03-29
申请号：US11130423
申请日：2005-05-16
CPC分类号： A61B34/20 , A61B90/39 , A61B2034/2051 , A61B2090/3958 , A61B2090/397 , A61B2090/3975 , A61B2090/3983
摘要： A method for tracking a position of a sensor includes generating a periodic magnetic field in a vicinity of the sensor, the field having a positive polarity phase and a negative polarity phase with respective constant positive and negative amplitudes. First and second field measurement signals are produced responsively to the magnetic field at the sensor during the positive and negative polarity phases, respectively. The position of the sensor is determined responsively to the first and second field measurement signals.
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公开(公告)号：US09005192B2
公开(公告)日：2015-04-14
申请号：US12941165
申请日：2010-11-08
CPC分类号： A61B18/1206 , A61B18/1492 , A61B18/16 , A61B2018/00577 , A61B2018/00779 , A61B2018/00821 , A61B2018/00875 , A61B2018/124 , A61B2018/128 , A61B2018/1286 , A61B2018/1467 , A61B2034/2051
摘要： Apparatus, including a current source which has a transformer having a primary winding coupled to receive input power. The transformer has a secondary winding having a first plurality of secondary taps configured to supply electrical power at an ablation frequency to an electrode in contact with body tissue. The tissue has an impedance, and is ablated by the electrical power. The current source has a second plurality of capacitors. The apparatus also includes a controller which is configured to select one of the secondary taps and at least one of the capacitors in response to the impedance and the ablation frequency, and to connect the selected secondary tap to the selected at least one of the capacitors.
摘要翻译： 一种装置，包括具有耦合以接收输入功率的初级绕组的变压器的电流源。 该变压器具有次级绕组，该次级绕组具有第一多个辅助抽头，其构造成以消融频率将电力提供给与身体组织接触的电极。 组织具有阻抗，并被电力消融。 电流源具有第二多个电容器。 该装置还包括控制器，其被配置为响应于阻抗和消融频率来选择辅助抽头和至少一个电容器，并且将所选择的次级抽头连接到所选择的至少一个电容器。
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公开(公告)号：US08847587B2
公开(公告)日：2014-09-30
申请号：US13181616
申请日：2011-07-13
CPC分类号： A61B19/5244 , A61B5/062 , A61B34/20 , A61B2017/00725 , A61B2034/2051 , H01F5/003
摘要： A magnetic field generator includes a substrate, a main generator coil, at least one field sensor, at least one shim coil, a driver circuit and a correction circuit. The main generator coil, the field sensor, and the shim coil are all disposed on the substrate. The driver circuit is coupled to drive the main generator coil with a driving current at a selected frequency. The correction circuit is coupled to receive a signal at the selected frequency from the at least one field sensor and, in response to deviations in the signal from a predefined baseline, to drive the at least one shim coil with a driving current having an amplitude configured to return the signal to the baseline.
摘要翻译： 磁场发生器包括基板，主发电机线圈，至少一个场传感器，至少一个垫片线圈，驱动电路和校正电路。 主发生器线圈，场传感器和垫片线圈均设置在基板上。 驱动电路被耦合以用选定频率的驱动电流驱动主发电机线圈。 校正电路被耦合以从所述至少一个场传感器接收选定频率的信号，并且响应于来自预定基线的信号的偏差，以具有幅度配置的驱动电流来驱动所述至少一个匀场线圈 将信号返回到基线。
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公开(公告)号：US20120123276A1
公开(公告)日：2012-05-17
申请号：US12946910
申请日：2010-11-16
申请人： Assaf Govari , Yaron Ephrath , Christopher Thomas Beeckler , Athanassios Papaioannou , Ariel Garcia , Andres Claudio Altmann
发明人： Assaf Govari , Yaron Ephrath , Christopher Thomas Beeckler , Athanassios Papaioannou , Ariel Garcia , Andres Claudio Altmann
CPC分类号： A61B5/0084 , A61B1/00096 , A61B5/6885 , A61B18/1492 , A61B2018/00357 , A61B2018/00755 , A61M25/0009 , B29C48/09 , B29C48/21 , B29C48/30 , B29C48/335 , B29C2948/92619 , B29C2948/92628 , B29K2995/0056
摘要： A medical probe, including a biocompatible sheath having proximal and distal ends, and having at least one transparent strip between the proximal end and the distal end. The probe also has one or more functional elements positioned within the biocompatible sheath.
摘要翻译： 医用探针，包括具有近端和远端的生物相容护套，并且在近端和远端之间具有至少一个透明条。 探针还具有位于生物相容护套内的一个或多个功能元件。
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公开(公告)号：US20110307207A1
公开(公告)日：2011-12-15
申请号：US12797693
申请日：2010-06-10
CPC分类号： A61B5/1495 , A61B5/6885 , A61B2560/0223 , A61B2560/0228
摘要： A calibration apparatus includes a fixture, which is coupled to hold a distal end of a medical probe. A plurality of weights, which have respective masses and respective bottom surfaces that are oriented at respective angles with respect to the distal end of the probe, are coupled to rest on a distal tip of the probe so as to apply to the distal tip respective force vectors that cause a deformation of the distal tip relative to the distal end. A calibration processor is configured to receive from the probe measurements indicative of the deformation of the distal tip in response to the force vectors, and to compute, based on the measurements, the masses and the angles, calibration coefficients for assessing the force vectors as a function of the measurements.
摘要翻译： 校准装置包括固定装置，其被联接以保持医疗探针的远端。 具有相对于相对于探针的远端以相应角度定向的相应质量和相应底表面的多个重物联接以保持在探针的远侧末端上，以便向远侧末端施加相应的力 导致远侧末端相对于远端变形的载体。 校准处理器被配置为从所述探针接收响应于所述力向量的指示所述远侧末端的变形的测量，并且基于所述测量来计算所述质量和角度，用于将所述力矢量评估为 测量功能。
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公开(公告)号：US20110213240A1
公开(公告)日：2011-09-01
申请号：US13100369
申请日：2011-05-04
IPC分类号： A61B5/05
CPC分类号： A61B5/06 , A61B1/00 , A61B5/065 , A61B8/0833 , A61B8/0841 , A61B2034/2053
摘要： 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.
摘要翻译： 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。
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公开(公告)号：US20110152856A1
公开(公告)日：2011-06-23
申请号：US12646197
申请日：2009-12-23
CPC分类号： A61B18/1492 , A61B18/1815 , A61B34/20 , A61B2018/00351 , A61B2018/00577 , A61B2018/00702 , A61B2018/00714 , A61B2018/00761 , A61B2018/00791 , A61B2034/104 , A61B2034/2051 , A61B2090/064 , A61B2090/065 , A61M25/0158 , A61M2025/0002 , A61M2025/0166
摘要： Tissue ablation systems and methods are provided, wherein a cardiac catheter incorporates a pressure detector for sensing a mechanical force against the distal tip when engaging an ablation site. Responsively to the pressure detector, a controller computes an ablation volume according to relationships between the contact pressure against the site, the power output of an ablator, and the energy application time. A monitor displays a map of the heart which includes a visual indication of the computed ablation volume. The monitor may dynamically display the progress of the ablation by varying the visual indication.
摘要翻译： 提供组织消融系统和方法，其中心脏导管结合有压力检测器，用于在接合消融部位时感测抵抗远侧末端的机械力。 响应于压力检测器，控制器根据与现场的接触压力，消融器的功率输出和能量施加时间之间的关系来计算消融体积。 监视器显示包括计算的消融体积的视觉指示的心脏图。 监视器可以通过改变视觉指示来动态显示消融的进展。
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