Systems, devices and methods for treating the heart with ablation

摘要

A system (60) for ablating internal heart tissue (12) in an ablation pattern (50) on a surface of the tissue within the heart. The system (60) includes an ablation catheter (14) with a distal end having an ablating tip portion (20) operative to allow selective ablation of tissue. A guiding device (62) is engageable with the ablation catheter (14) and includes a tissue anchoring portion (74) operable to engage with tissue proximate to the tissue to be ablated so as to temporarily anchor the guiding device (62) relative to the tissue (12). Engagement of the guiding device (62) with the ablation catheter (14) operates to assist with guiding the ablating tip portion (20) in moving along the pattern (50). Various devices and methods of use are further disclosed.

主权项

1. A system for ablating internal heart tissue in an ablation pattern on a surface of the tissue within the heart, the system comprising:
an ablation catheter including a proximal end and a distal end, the distal end including an ablating tip portion operative to allow selective ablation of tissue, and a guiding device engageable with the ablation catheter, the guiding device including a template wire having a proximal portion extending along a lengthwise axis, a template portion located distal to the proximal portion, and the template wire includes a tissue anchoring portion operable to engage with tissue proximate to the tissue to be ablated so as to temporarily anchor the guiding device relative to the tissue to be ablated, wherein the template portion extends laterally relative to the lengthwise axis and is generally shaped to correspond to at least a portion of the ablation pattern, and the template wire and the ablation catheter are respectively configured to allow the ablating tip portion to be guided and moved along the template portion to apply at least a portion of the ablation pattern.