Devices, systems, and methods for treating cardiac arrhythmias

摘要

Medical devices are described for performing mapping, ablating, pacing, and/or defibrillating procedures on one or more layers of the cardiac wall via an epicardial or extra-pericardial approach in a minimally invasive (e.g., orthoscopic) surgical procedure. One of the medical devices described includes a main support member and one or more secondary support members extending outwardly from the main support member having electrodes configured to receive electrical impulses. The secondary support member may include a support pad configured to be removably attached to a corresponding area of the epicardium for holding the medical device in place during a procedure, such as through application of vacuum pressure via a containment dome provided on each secondary support member. Further, an ablating electrode may be slidably disposed along the main support member for transmitting energy to a target site proximate the electrode. Other devices and associated methods are also described.

主权项

1. A medical device configured to be inserted into a patient's body for treating cardiac arrhythmias extra-pericardially, the medical device comprising:
a plurality of support members, wherein the support members are configured to be moved between an expanded position and a collapsed position; at least one pacing electrode disposed on at least one of the support members and configured to transmit energy to a target site; at least one defibrillating electrode disposed on at least one of the support members, wherein the defibrillating electrode is configured to transmit energy to the target site; and at least one attachment member configured to secure the medical device to body tissue at the target site, wherein, in the expanded state, the support members are configured to attach to the target site, wherein, in the expanded state, the at least one pacing electrode and the at least one defibrillating electrode are configured to be independently energized so as to transmit energy to the target site in a pacing or defibrillating operation, respectively, wherein the at least one pacing electrode and/or the at least one defibrillating electrode is disposed on an outer surface of the pericardium, and wherein the medical device is configured to be attached to an outer surface of the pericardium, and wherein the at least one attachment member comprises a hook, wire, or other engaging point that hooks into the body tissue at the target site.