Monitoring tissue temperature while using an irrigated catheter

    公开(公告)号:US09980772B2

    公开(公告)日:2018-05-29

    申请号:US13036469

    申请日:2011-02-28

    IPC分类号: A61B18/00 A61B18/14 A61B34/10

    摘要: A method, consisting of modeling physical parameters representative of a probe in proximity to body tissue during an ablation procedure performed by the probe. The method also includes measuring a subgroup of the physical parameters during a non-ablation stage of the ablation procedure so as to generate measured non-ablative values of the subgroup, and measuring the subgroup of the physical parameters during an ablation stage of the ablation procedure so as to generate measured ablative values of the subgroup. In response to the modeling, the method includes generating calculated non-ablative values of the subgroup for the non-ablation stage, and generating calculated ablative values of the subgroup for the ablation stage. The method compares the measured non-ablative values with the calculated non-ablative values, and compares the measured ablative values with the calculated ablative values, so as generate optimal values of the physical parameters.

    Current localization tracker
    5.
    发明授权

    公开(公告)号:US08456182B2

    公开(公告)日:2013-06-04

    申请号:US12556639

    申请日:2009-09-10

    IPC分类号: G01R27/08

    摘要: A method includes positioning body-electrodes in galvanic contact with a body of a patient and positioning a mapping-tool, having a mapping-electrode, in a plurality of regions in the body. The method further includes tracking the mapping-tool at different positions in each of the regions using a location-measuring system, and for each region, generating a respective set of calibration-currents between the body-electrodes and the mapping-electrode at the different positions in the region. A respective relation is derived for each region between the respective set of the calibration-currents and the different positions, and is used in determining the location of an investigation-tool in response to the different respective relations and investigation-tool-currents.

    Calibration and compensation for errors in position measurement
    6.
    发明授权
    Calibration and compensation for errors in position measurement 有权
    校准和补偿位置测量误差

    公开(公告)号:US08400164B2

    公开(公告)日:2013-03-19

    申请号:US12611500

    申请日:2009-11-03

    IPC分类号: G01R35/00 A61B5/05

    摘要: Methods and systems method for sensing a position of an object in a body include positioning a probe in the body, making measurements of mapping electrical currents passing between at least a first electrode on the probe and a plurality of second electrodes on a surface of the body, calibrating the measurements so as to compensate for one or more non-ideal features of the measurements including effects of system-dependent electrical coupling to one or more devices other than the first electrode and the second electrodes, and computing the position of the probe in the body using the calibrated measurements.

    摘要翻译: 用于感测物体在身体中的位置的方法和系统方法包括将探针定位在体内,测量在探针上的至少第一电极和身体表面上的多个第二电极之间通过的映射电流 校准测量值以补偿测量的一个或多个非理想特征,包括与除第一电极和第二电极之外的一个或多个器件的系统相关的电耦合的影响,以及计算探针的位置 身体使用校准测量。

    Relative impedance measurement
    8.
    发明授权
    Relative impedance measurement 有权
    相对阻抗测量

    公开(公告)号:US07848787B2

    公开(公告)日:2010-12-07

    申请号:US11177861

    申请日:2005-07-08

    申请人: Daniel Osadchy

    发明人: Daniel Osadchy

    摘要: A method for calibrating impedance includes coupling at least first, second, and third electrodes at respective locations to a surface of a body of a subject. A first current passing through the body between the first and second body-surface electrodes is measured, and a second current passing through the body between the first and third body-surface electrodes is measured. From the first and second currents, a contact factor is derived that is indicative of the impedance between at least one of the body-surface electrodes and the surface of the body. Also described are methods for sensing the position of a probe and for detecting tissue contact based on a relation between currents from the probe to body-surface electrodes.

    摘要翻译: 用于校准阻抗的方法包括将相应位置处的至少第一,第二和第三电极耦合到对象的身体的表面。 测量在第一体表电极和第二体表电极之间穿过主体的第一电流,并且测量通过第一和第三体表电极之间的主体的第二电流。 从第一和第二电流,导出指示体表电极中的至少一个与身体表面之间的阻抗的接触因子。 还描述了用于基于从探针到体表电极的电流之间的关系来感测探针的位置并用于检测组织接触的方法。

    CALIBRATION AND COMPENSATION FOR ERRORS IN POSITION MEASUREMENT
    9.
    发明申请
    CALIBRATION AND COMPENSATION FOR ERRORS IN POSITION MEASUREMENT 有权
    校正和补偿位置测量中的错误

    公开(公告)号:US20100117659A1

    公开(公告)日:2010-05-13

    申请号:US12611500

    申请日:2009-11-03

    IPC分类号: G01R27/04

    摘要: Methods and systems method for sensing a position of an object in a body include positioning a probe in the body, making measurements of mapping electrical currents passing between at least a first electrode on the probe and a plurality of second electrodes on a surface of the body, calibrating the measurements so as to compensate for one or more non-ideal features of the measurements including effects of system-dependent electrical coupling to one or more devices other than the first electrode and the second electrodes, and computing the position of the probe in the body using the calibrated measurements.

    摘要翻译: 用于感测物体在身体中的位置的方法和系统方法包括将探针定位在体内,测量在探针上的至少第一电极和身体表面上的多个第二电极之间通过的映射电流 校准测量值以补偿测量的一个或多个非理想特征,包括与除第一电极和第二电极之外的一个或多个器件的系统相关的电耦合的影响,以及计算探针的位置 身体使用校准测量。

    Catheter calibration
    10.
    发明授权
    Catheter calibration 有权
    导管校准

    公开(公告)号:US06370411B1

    公开(公告)日:2002-04-09

    申请号:US09402775

    申请日:1999-12-27

    IPC分类号: A61N105

    摘要: A probe assembly (18) for connection to a console (34) including a problem (20) for insertion into the body of a subject and a cable (21) for connecting the problem (20) to the console (34), the problem (20) having distal (22) and proximal ends and including a microcircuit (90) which stores information relating to the probe (20), and the cable (21) including access circuitry for accessing the microcircuit in the probe.

    摘要翻译: 一种用于连接到控制台(34)的探针组件(18),其包括用于插入物体的主体的问题(20)和用于将问题(20)连接到控制台(34)的电缆(21),该问题 (20)具有远端(22)和近端并且包括存储与探头(20)有关的信息的微电路(90),并且电缆(21)包括用于访问探针中的微电路的访问电路。