公开/公告号

US11020179B2

申请日

2020-05-28

发明名称

Systems, devices, and methods for focal ablation

解决的技术问题

In some embodiments, at least one distal electrode from the set of distal electrodes may be configured to be activated with a first polarity and at least one proximal electrode from the set of proximal electrodes may be configured to be activated with a second polarity being opposite from the first polarity, to collectively generate the electric field. In some embodiments, each spline from the set of splines includes a plurality of proximal electrodes and at least one flexible portion disposed between adjacent proximal electrodes from the plurality of proximal electrodes for increasing spline flexibility.

技术方案

Systems, devices, and methods for electroporation ablation therapy are disclosed, with the device including a set of splines coupled to a catheter for medical ablation therapy. Each spline of the set of splines may include a set of electrodes formed on that spline. The set of splines may be configured for translation to transition between a first configuration and a second configuration. The devices described herein may be used to form a lesion via focal ablation.

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公开/公告号

US10172673B2

申请日

2017-09-21

发明名称

Systems devices, and methods for delivery of pulsed electric field ablative energy to endocardial tissue

解决的技术问题

In some embodiments, an ablation device deployed in the second configuration may appose tissue (e.g., an atrial surface) such that one or more electrodes formed on each surface of at least two splines may be suitably polarized to generate an electric field in atrial tissue. The electric field may have a field direction that is generally aligned in a circumferential direction of the atrial tissue. This circumferential alignment of the electric field with tissue may enhance the safety, efficiency and effectiveness of irreversible electroporation to tissue and yield more effective ablative lesions with a reduction in total energy delivered.

技术方案

Systems, devices, and methods for electroporation ablation therapy are disclosed, with the system including a pulse waveform signal generator for medical ablation therapy, and an endocardial ablation device includes at least one electrode for ablation pulse delivery to tissue. The signal generator may deliver voltage pulses to the ablation device in the form of a pulse waveform. The system may include a cardiac stimulator for generation of pacing signals and for sequenced delivery of pulse waveforms in synchrony with the pacing signal.

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