In-plane dual loop fixed diameter electrophysiology catheters and methods of manufacturing therefor

摘要

An EP catheter includes a tubular body having a proximal region, a neck region, and a distal portion predisposed into an in-plane dual loop (at least, approximately, more or less) configuration and including a plurality of diagnostic electrodes. In deflectable catheter forms, at least one activation wire extends through at least a portion of the proximal region of the catheter body and is adapted to deflect the distal portion up to approximately 180 degrees relative to the proximal region. The catheter can be operated manually by a clinician or via a clinician-surrogate such as a computer processor-controlled surgical system. In addition, a variety of localization, visualization, and/or orientation-specific elements can be incorporated into the devices described, depicted, and claimed herein (e.g., metallic coil members, active impedance emitting or receiving electrodes, fluoroscopically opaque materials, and the like).

主权项

1. An electrophysiology (EP) catheter comprising: a handle; a tubular catheter body having a proximal region, a neck region, and a distal looped region predisposed into at least a dual loop having a majority of said dual loop disposed within a common planar orientation; a flat wire assembly disposed entirely between the handle and the distal looped region, the flat wire assembly having a length of at least about ten centimeters: a first activation wire extending from the handle and terminating within the flat wire assembly; and a plurality of electrodes coupled to the distal looped region; wherein the distal looped region further includes a shape memory material comprising a nickel titanium material or an alloy thereof; wherein the flat wire assembly comprises a segment of flat wire joining the first activation wire and the shape memory material; and wherein the segment of flat wire is flat along its entire length.