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1. 发明公开

EP1398056A1 Ablation catheter having shape-changing balloon 有权
标题翻译： Ablationskatheter mitformveränderbaremBallon
公开(公告)号：EP1398056A1
公开(公告)日：2004-03-17
申请号：EP03255791.0
申请日：2003-09-16
申请人： Biosense Webster, Inc.
发明人： Jiminez, Teodoro S., Jr , Klumb, Pete B.
IPC分类号： A61N7/02
CPC分类号： A61N7/02 , A61B2017/00044 , A61B2017/00084 , A61B2017/22051
摘要： A circumferential ablation catheter is provided that is particularly useful for ablating a circumferential region of tissue in a tubular region of or near the heart, such as a pulmonary vein. The catheter comprises an elongated tubular catheter body having an outer wall, proximal and distal ends, and a lumen extending therethrough. The catheter also comprises a generally tubular inner support member having proximal and distal ends and a lumen extending therethrough. A proximal portion of the inner support member extends into the lumen of the catheter body, and a distal portion ofthe inner support member extends outside the catheter body. A circumferential ablation element, such as an ultrasound transducer, is mounted on the distal portion of the inner support member outside the catheter body. A moveable tube extends through the lumen of the inner support member and through the catheter body. The moveable tube is longitudinally moveable relative to the inner support member and catheter body and has a distal end that extends beyond the distal end of the inner support member. An inflatable balloon is provided generally in surrounding relation to the circumferential ablation element. The inflatable balloon has a proximal end attached, directly or indirectly, to the distal end of the catheter body and a distal end attached, directly or indirectly, to a portion of the moveable tube that extends beyond the distal end of the inner support member. Longitudinal movement of the moveable tube relative to the catheter body and inner support member causes movement of the distal end of the balloon relative to the proximal end of the balloon to thereby change the length and shape of the expanded balloon.
摘要翻译：围绕超声波换能器（28）的可充气球囊（26）具有附接到导管（12）的远端的近端，并且远端附接到延伸超过内支撑件（30）的远端的可移动管（58）的一部分，。管相对于导管的纵向运动导致球囊远端相对于球囊近端的移动，以改变球囊的形状。

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