David R. Fischell,Tim A. Fischell,Vartan Ghazarossian,Steven Almany
申请号：
US14064077
公开号：
US20150119875A1
申请日:
2013.10.25
申请国别(地区):
US
年份:
2015
代理人:
摘要：
An intravascular catheter for peri-vascular nerve activity ablation and/or sensing includes multiple needles advanced through supported guide tubes (needle guiding elements) which expand with open ends around a central axis to contact the interior surface of the wall of the renal artery or other vessel of a human body allowing the needles to be advanced though the vessel wall into the perivascular space. The catheter also includes structures which provide radial and lateral support to the guide tubes so that the guide tubes open uniformly and maintain their position against the interior surface of the vessel wall as the sharpened needles are advanced to penetrate into the vessel wall. Ablative energy or fluid is delivered from the needles in or near the adventitia to ablate nerves outside of the media while sparing nerves within the media.
