Catheter electrodes for energy management

An electrode and energy technology, applied in catheters, applications, surgical navigation systems, etc., can solve problems such as unsatisfactory mapping interval bipolar ablation technology

Active Publication Date: 2019-09-13
MEDTRONIC INC
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the required mapping interval is too small to be ideal for bipolar ablation techniques

Method used

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  • Catheter electrodes for energy management
  • Catheter electrodes for energy management
  • Catheter electrodes for energy management

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Embodiment Construction

[0072] The devices and systems disclosed herein improve the efficacy of therapeutic procedures by enhancing lesion formation and depth and improving mapping signal quality.

[0073] Before describing in detail exemplary embodiments in accordance with the present disclosure, it is to be noted that components have been represented in the drawings by conventional symbols where appropriate, only those that are relevant to an understanding of the embodiments of the present disclosure are shown. In order not to obscure the disclosure with specific details, such details will become apparent to one of ordinary skill in the art having the benefit of the description herein. For simplicity, the electric fields may not be shown to actual scale or orientation in order to simply depict the relative polarity of single-phase or bi-phase pulsed voltages or currents.

[0074] As used herein, relative terms such as "first", "second", "top" and "bottom" may be used only to distinguish one entity ...

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Abstract

Methods, systems, and devices for enhancing the efficiency and efficacy of energy delivery and tissue mapping. One system includes a treatment element having a plurality of electrodes and an energy generator configured to deliver electric energy pulses to the electrodes in a variety of patterns. For example, electrodes may be arranged in closely spaced pairs. The energy generator may deliver mapping energy to each electrode in each pair individually to map tissue and may deliver ablation energy to the electrodes in each pair together, such that each pair is treated like a single electrode, todeliver ablation energy, such as bipolar ablation energy between adjacent pairs. One system includes at least one concave electrode, the configuration of which concentrates the energy and drives it deeper into the tissue. One system includes neutral electrodes between active electrodes, the energy generator selectively coupling the neutral electrodes to alter the ablation pattern.

Description

technical field [0001] The present invention relates to methods, systems and devices for enhancing the efficiency and efficacy of ablation energy delivery and tissue mapping. In particular, the present invention relates to improved electrodes, electrode configurations and energy delivery modes. Background technique [0002] Arrhythmia is a condition in which the normal rhythm of the heart is interrupted. Certain types of cardiac arrhythmias, including ventricular tachycardia and atrial fibrillation, can be treated by ablation (eg, radiofrequency (RF) ablation, pulsed RF ablation, pulsed electric field ablation, cryoablation, etc.). The success of an ablation procedure depends primarily on the quality and adequacy of the lesion(s) created during the procedure. For example, the injury must be deep enough to destroy arrhythmogenic tissue or to sufficiently disrupt or isolate abnormal electrical conduction within myocardial tissue. Further, it may be desirable that the lesion...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B18/14A61B18/00A61B5/042A61B34/20
CPCA61B2018/1407A61B2018/1475A61B2034/2046A61B2018/00839A61B5/6852A61B18/1492A61B2018/00577A61B2018/1467A61B5/287A61B34/20
Inventor B·T·霍华德M·T·斯图尔特D·米克拉夫契奇B·K·普鲁肖特哈曼J·M·什季马克
Owner MEDTRONIC INC
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