Michael D Eggen,Zhongping Yang,Rick D McVenes,Noelle C. Hurtig,Raymond W Usher
申请号：
US14611838
公开号：
US09517336B2
申请日:
2015.02.02
申请国别(地区):
US
年份:
2016
代理人:
摘要：
A fixation member of an electrode assembly for an implantable medical device includes a tissue engaging portion extending along a circular path, between a piercing distal tip thereof and a fixed end of the member. The circular path extends around a longitudinal axis of the assembly. A helical structure of the assembly, which includes an electrode surface formed thereon and a piercing distal tip, also extends around the longitudinal axis and is located within a perimeter of the circular path. The tissue engaging portion of the fixation member extends from the distal tip thereof in a direction along the circular path that is the same as that in which the helical structure extends from the distal tip thereof. The electrode assembly may include a pair of the fixation members, wherein each tissue engaging portion may extend approximately one half turn along the circular path.
