Christopher J. Birchard,Jerett A. Creed,Wai Chung Wong
申请号：
US14697520
公开号：
US09919131B2
申请日:
2015.04.27
申请国别(地区):
US
年份:
2018
代理人:
摘要：
A catheter for ablation, mapping, injection, and directional control by an external magnetic system has a catheter body, an intermediate section, and a tip section having a tip electrode with an omnidirectional distal end and a concentric needle port. The tip electrode houses a magnetic device and a position sensor in an integrated configuration that facilitates a path in the tip section for extension and retraction of a component, including an injection needle, with reduced stress and friction. The integrated configuration is an efficient use of space in the tip electrode that allows the tip section to carry both the position sensor and the necessary volume of magnetic or magnetizable material to accomplish magnetic navigation. The catheter also includes a very soft and flexible intermediate section and an even softer and more flexible distal transitional section carrying additional magnetic members to facilitate remote magnetic navigation.
