CHAN, TINA,DITTER, TOM A.,FUIMAONO, KRISTINE,GRUNEWALD, DEBBY,JIMENEZ, EDUARDO,PIKE, ROBERT W.,ZIRKLE, MICHAEL O.
申请号：
CA2815653
公开号：
CA2815653A1
申请日:
2013.05.13
申请国别(地区):
CA
年份:
2013
代理人:
摘要：
A catheter includes an elongated body, a distal assembly with a shape-memorymemberdefining a generally helical form, and a control handle. The control handlemay be adapted toactuate a deflection puller wire for deflecting a portion of the elongatedbody and a contractionwire for contracting the generally helical form. The generally helical formcarries irrigatedablation ring electrodes. A nitinol support member with shape memory extendsthrough the distalassembly and into the elongated body to provide the helical form. The supportmember mayhave a varying stiffness along its length, for example, a decreasing stiffnesstoward a distal endof the support member. The support member can also be hollow so that it canreceive a mandrelwhose stiffness is greater than that of the support member.
