SYSTEMS AND METHODS FOR DETECTING LEAKAGE CURRENTS IN HIGH-FREQUENCY ABLATION SYSTEMS

    公开(公告)号:US20220183753A1

    公开(公告)日:2022-06-16

    申请号:US17378597

    申请日:2021-07-16

    Abstract: The present disclosure provides systems and methods for detecting leakage currents in radio-frequency (RF) ablation systems. An RF generator may be configured to disable an electrical return path from a patient to a ground terminal. The RF generator may also be configured to apply an electrical signal to an electrode that is positioned to be in proximity to target tissue of the patient. The RF generator may be further configured to measure a leakage impedance while the electrical return path is disabled and the electrical signal is applied to the electrode. The RF generator may also be configured to control RF ablation therapy based, at least in part, on the measured leakage impedance. Other features are also claimed and described.

    ADAPTIVE CONTEXT SENSITIVE TIME DIVISION MULTIPLEXED CONTROL OF A HIGH FREQUENCY ABLATION DEVICE

    公开(公告)号:US20220180999A1

    公开(公告)日:2022-06-09

    申请号:US17338460

    申请日:2021-06-03

    Abstract: Implementations for adaptive context sensitive time division multiplexed scheduling and execution of tasks to be performed by a high frequency ablation system, such as an RF ablation system, are disclosed. The implementations may be effectuated in software, firmware, or both. Tasks may be categorized into categories corresponding to task priorities. Time blocks may be allocated during which execution of the tasks may be performed. The time blocks may be divided into time slots. A task may be assigned to a time slot based, at least in part, on a categorization priority of the task. Additionally, each task may be executed according to the schedule delineated by the time slots. An assignment of tasks to time slots may be adjusted based, at least in part, on data received at a high frequency ablation device of the high frequency ablation system.

    SYSTEM AND METHOD FOR DETECTING APPLICATION OF GROUNDING PAD FOR ABLATION DEVICES

    公开(公告)号:US20220133406A1

    公开(公告)日:2022-05-05

    申请号:US17089325

    申请日:2020-11-04

    Abstract: Disclosed herein is an RF ablation system including a plurality of electrodes, a ground pad, and a signal generator. The electrodes are positioned at respective tissue sites within a patient's body, and the ground pad is positioned on the patient's body. The signal generator is coupled to the ground pad and the electrodes via corresponding channels including a selected channel and unselected channels. The signal generator commutates switching circuits for the corresponding channels to close the selected channel and to open the unselected channels, and measures a first impedance over the selected channel. The signal generator commutates the switching circuits to close the selected channel and the unselected channels, and then measures a second impedance. The signal generator computes a difference between the first and second impedances, and determines the ground pad has at least a poor electrical connection to the patient's body when the difference exceeds a threshold.

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