Abstract: Provided is an electrode catheter whose movable shape has a high reproducibility even when the load changes, and has a high degree of freedom in corresponding to the shape of a measurement site.

Abstract: Provided is a multiple-electrode monorail guide catheter for use in vascular insertion, including: an elongated catheter main body having a proximal end and a distal end; a guidewire inlet opening on the distal end; a guidewire outlet opening; an operation tube; a terminal unit on the proximal end; an electrode assembly having a double-lumen structure composed of an outer tube having electrodes on an outer surface of the outer tube and an inner tube independently provided from the outer tube, allowing insertion of a guidewire, having an outer diameter smaller than an inner diameter of the outer tube, and being accommodated within an outer tube lumen; a clearance defined by the outer tube luminal surface and an inner tube outer circumferential surface; and lead wires extending from the electrodes to the terminal unit on the proximal end and being inserted into the lumen of the outer tube.

Abstract: Provided is a multiple-electrode monorail guide catheter for use in vascular insertion, including: an elongated catheter main body having a proximal end and a distal end; a guidewire inlet opening on the distal end; a guidewire outlet opening; an operation tube; a terminal unit on the proximal end; an electrode assembly having a double-lumen structure composed of an outer tube having electrodes on an outer surface of the outer tube and an inner tube independently provided from the outer tube, allowing insertion of a guidewire, having an outer diameter smaller than an inner diameter of the outer tube, and being accommodated within an outer tube lumen; a clearance defined by the outer tube luminal surface and an inner tube outer circumferential surface; and lead wires extending from the electrodes to the terminal unit on the proximal end and being inserted into the lumen of the outer tube.