MAGNETICALLY GUIDED CATHETER WITH CONCENTRIC NEEDLE PORT

摘要

A catheter (10) adapted for ablation, mapping, injection, and directional control by an external magnetic system has a catheter body (12), an intermediate section (14), and a tip section (36) having a tip electrode (37) configured with an omnidirectional distal end and a concentric needle port. The tip electrode houses a magnetic device (38) and a position sensor (34) arranged in an integrated configuration, wherein the configuration facilitates a path in the tip section for a component, including an injection needle (46), to extend through the tip section for extension and retraction with reduced stress and friction. The integrated configuration is an efficient use of space in the tip electrode.