Cardiac tissue ablation device - uses intracavity filling member e.g balloon in contact with tissue interior and shaped to enable cavity filling member e.g foam rubber surrounding intracavity member to conform to cavity being treated

摘要

The ablation device includes an intracavity member e.g an inflatable balloon, a cavity filling member e.g foam rubber surrounding the intracavity member, and an electrode. The balloon assists in the placement of the foam rubber in contact with the tissue within the cavity being treated. The balloon is pref shaped to enable the foam rubber to conform to the contours of the tissue cavity being treated. The foam rubber surrounds the balloon and receives a medium which inflates the foam rubber about the balloon such that the foam rubber closely conforms to the cavity being treated. The foam rubber may also be used to deliver therapeutic of diagnostic agents, which are delivered throughout the foam rubber. The electrode delivers RF energy to the interior tissue layers of the cavity being treated, and may be positioned on the exterior surface of the foam rubber such that it contacts the tissue.