Structures for supporting porous electrode elements

Details Structures for supporting porous electrode elements Structures for supporting porous electrode elements

1996-12-19

2000-06-13

Coggins, Wynn Wood

Surgery

Means for introducing or removing material from body for...

Infrared, visible light, ultraviolet, x-ray or electrical...

607122, 607 99, 607113, 607153, 606 41, A61N 130, A61N 100, A61B 1736

Patent

active

060760125

ABSTRACT:
A catheter assembly comprising a elongated, flexible support structure having an axis. The assembly also includes an elongated porous electrode assembly carried by the support structure along the axis for contact with tissue. The elongated porous electrode assembly comprises a wall having an exterior peripherally surrounding an interior area, a lumen to convey a medium containing ions into the interior area, and an element coupling the medium within the interior area to a source of electrical energy. At least a portion of the wall comprising a porous material is sized to allow passage of ions contained in the medium to thereby enable ionic transport of electrical energy through the porous material to the exterior of the wall to form a continuous elongated lesion pattern in tissue contacted by the wall. The support structure can have a curvilinear geometry, e.g., a loop shape, and the elongated porous electrode assembly conforms to the curvilinear geometry. The assembly also includes comprises a sheath carried by the support structure having a slot extending along the axis of the support structure, wherein the electrode assembly is adapted to bend outwardly through the slot.

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