发明名称 |
ELECTRODE ASSEMBLIES AND ASSOCIATED FIXATION MEMBERS FOR IMPLANTABLE MEDICAL DEVICES |
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. |
申请公布号 |
US2014324145(A1) |
申请公布日期 |
2014.10.30 |
申请号 |
US201313869509 |
申请日期 |
2013.04.24 |
申请人 |
MEDTRONIC, INC. |
发明人 |
Eggen Michael D.;Yang Zhongping;McVenes Rick D.;Hurtig Noelle C.;Usher Raymond W. |
分类号 |
A61N1/05 |
主分类号 |
A61N1/05 |
代理机构 |
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代理人 |
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主权项 |
1. An electrode assembly for an implantable medical device, the assembly comprising a longitudinal axis, a helical structure coupled to a distal portion of the device and extending distally from the distal portion and around the longitudinal axis, a first electrode surface formed on the helical structure, and a second electrode surface electrically isolated from the first electrode surface, the helical structure including a piercing distal tip located adjacent to the first electrode surface; and an improvement to the assembly comprising: a pair of fixation members, wherein each fixation member of the pair comprises:
a fixed end coupled to the distal portion of the device; and a tissue engaging portion terminated by a piercing distal tip, each tissue engaging portion extending from the corresponding distal tip to the corresponding fixed end along a circular path, the helical structure being located within a perimeter of the circular path; and wherein both tissue engaging portions extend from the corresponding piercing distal tip thereof in a direction along the circular path that is the same as that in which the helical structure extends from the piercing distal tip thereof, either clockwise or counter-clockwise. |
地址 |
Minneapolis MN US |