SYSTEM AND METHOD FOR MAPPING ARRHYTHMIC DRIVER SITES

    公开(公告)号:US20240050015A1

    公开(公告)日:2024-02-15

    申请号:US18469968

    申请日:2023-09-19

    IPC分类号: A61B5/287 A61B5/00 A61B5/349

    摘要: Arrhythmic foci and other driver sites can be mapped using a multi-dimensional catheter. For instance, using a clique of three or more electrodes on the multi-dimensional catheter, an electroanatomical mapping system can identify a maximum bipolar voltage and an average unipolar voltage. The ratio of the average unipolar voltage to the maximum bipolar voltage can be interpreted as an indication of whether a cardiac location is an arrhythmic focus. Alternatively, an evaluation region can be defined about location in the patient's heart. The evaluation includes a plurality of rods, each associated with a respective E-field loop having a respective maximum and minimum amplitude bipole axes, with the rods being defined by the maximum amplitude bipole axes. For a sufficient number of rods within the evaluation region, a focus score for the evaluation region can be computed to reflect rod orientation consistency within the evaluation region.

    COLLAPSIBLE ELECTRODE APPARATUS FOR DIAGNOSIS OF ARRHYTHMIAS

    公开(公告)号:US20230337956A1

    公开(公告)日:2023-10-26

    申请号:US18185265

    申请日:2023-03-16

    IPC分类号: A61B5/287 A61B5/00

    摘要: Example apparatuses disclosed herein are generally usable with catheter-based systems to measure or provide electrical signals within the heart and surrounding vasculature. Example apparatuses generally include an end effector having loop members with electrodes thereon. The loop members are shaped to be delivered through, deployed from, and retracted into a catheter such that the loop members can be collapsed down to fit within the catheter and resiliently spread to form a paddle shape with deployed. Some of the loop members can include features approximate a distal end of the respective loop member to facilitate collapse when the end effector is retracted into the catheter.