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Cardiac pulsed field ablation

A pulse and pulse train technology, applied in the fields of therapy, medical science, surgery, etc., can solve the problems of increasing non-target tissue collateral damage, tissue scorching, embolism, etc.

Active Publication Date: 2018-04-17
MEDTRONIC INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Further, RF ablation procedures may require prolonged treatment time periods before correcting arrhythmias, which may increase the likelihood of collateral damage to non-target tissue or occurrence of tissue charring, which may lead to embolic events

Method used

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  • Cardiac pulsed field ablation
  • Cardiac pulsed field ablation
  • Cardiac pulsed field ablation

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Embodiment Construction

[0037] The present application provides methods and systems for diagnosing and / or treating undesired regions of physiological or anatomical tissue, such as those contributing to abnormal electrical pathways in the heart. Referring now to the drawings, in which like reference numerals refer to like elements, an embodiment of a medical system constructed in accordance with the principles of the invention is illustrated in figure 1shown in and generally designated as "10". The system 10 generally includes a medical device 12 that may be coupled directly or indirectly through a catheter electrode distribution system 13 to an energy supply, such as, for example, including energy control, delivery and monitoring The pulsed field ablation generator 14 of the system. A remote controller 15 may further be included in communication with the generator for operating and controlling various functions of the generator 14 . Medical device 12 may generally include one or more diagnostic or ...

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Abstract

A method for ablating tissue by applying at least one pulse train of pulsed-field energy. The method includes delivering a pulse train of energy having a predetermined frequency to cardiac tissue, thepulse train including at least 60 pulses, an inter-phase delay between 0 mus and 5 mus, an inter-pulse delay of at least 5 mus, and a pulse width of 5 mus.

Description

technical field [0001] The present invention relates to methods and systems for treating tissue using electroporation or pulsed field ablation. Background technique [0002] There are many instances of medical treatment that involve cutting, ablating, coagulating, destroying, or otherwise altering the physiological properties of tissue. These techniques can be beneficially used to alter the electrophysiological properties of tissue, such as those associated with cardiac arrhythmias or other electrophysiological abnormalities. Specifically, the normal sinus rhythm of the heart begins with the sinoatrial node ("SA node") that produces a depolarizing wavefront. The pulse depolarizes adjacent myocytes in the atria, which in turn depolarizes adjacent myocytes. The depolarization propagates across the atria causing the atria to contract and empty blood from the atria into the ventricles. The pulses are then delivered to the myocardium tissue cells of the ventricles via the atri...

Claims

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Application Information

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IPC IPC(8): A61N1/32A61B18/12A61B18/14
CPCA61B18/1206A61N1/327A61B2018/00351A61B2018/00613A61B18/1492A61B2018/00577A61B2018/0075A61B2018/00761A61B2018/00767A61B2018/00839A61B2018/126A61B2018/1407
Inventor M·T·斯图沃特S·J·弗拉艾思奇
Owner MEDTRONIC INC
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