Basket catheter having multiple electrodes

摘要

Embodiments of the present invention provide a catheter that comprises an elongated catheter body (16) and an electrode assembly (10) at the distal end of the catheter body. The electrode assembly comprises a plurality of spines (11), each of the spines having a proximal end connected to the distal end of the catheter and a distal end, the distal ends of the spines being connected at a spine tip junction (13). Each spine includes an elbow (20) having at least one discontinuity in stiffness at an intermediate position between the distal end and the proximal end thereof. The spines include a plurality of electrodes (12). The electrode assembly is collapsible to a collapsed arrangement to fit within a lumen of the elongated catheter body and expandable to an expanded arrangement with the elbows of the spines bending outwardly relative to the proximal and distal ends of the spines.

主权项

1. A catheter comprising:
an elongated catheter body comprising a proximal end and a distal end; a handle connected to the proximal end of the elongated catheter body, wherein the handle is configured to deflect the distal end of the elongated catheter body; and an electrode assembly at the distal end of the catheter body, the electrode assembly comprising a plurality of arms, each of the arms comprising a support member including a proximal end connected to the distal end of the catheter body, a proximal segment, a distal end, and a distal segment, the distal ends of the support members being connected at a tip junction, wherein the arms include a plurality of electrodes, wherein the electrode assembly is sized and configured to fit in a sheath in a collapsed arrangement and is configured to expand to an expanded arrangement with the arms bending outwardly relative to the proximal and distal ends of the arms, a mid portion of the arms moving radially outwardly from the collapsed arrangement to the expanded arrangement, and the proximal segment of the support member is wider than the distal segment.