Low profile electrode assembly

摘要

A tissue electrode assembly includes a membrane configured to form an expandable, conformable body that is deployable in a patient. The assembly further includes a flexible circuit positioned on a surface of the membrane and comprising at least one base substrate layer, at least one insulating layer and at least one planar conducting layer. An electrically-conductive electrode covers at least a portion of the flexible circuit and a portion of the surface of the membrane not covered by the flexible circuit, wherein the electrically-conductive electrode is foldable upon itself with the membrane to a delivery conformation having a diameter suitable for minimally-invasive delivery of the assembly to the patient.

主权项

1. A catheter and electrode assembly comprising:
an elongate catheter body comprising a distal portion; and an expandable electrode structure coupled to the distal portion, the expandable electrode structure comprising
an inflatable membrane having an expanded configuration,a substrate disposed over and secured to the inflatable membrane,at least two electrically conductive traces disposed on and secured to the substrate, a first trace electrically coupled to a first electrode and a second trace electrically coupled to a second electrode different than the first electrode, the first and second electrodes being individually addressable, and wherein the first electrode is disposed over a portion of the substrate and a portion of an external surface of the membrane not covered by the substrate.