Patent ID: 8478408

Claim:
A catheter delivery system for implantation of wireless electrode assemblies into the myocardium, comprising: an elongate tube having a proximal end and a distal end and having a lumen passing therethrough; a first elongate member having a proximal end and a distal end, the distal end configured to attach to a wireless electrode assembly, wherein the first elongate member comprises a detachment mechanism to detach the wireless electrode assembly from the first elongate member following delivery of the wireless electrode assembly into a heart wall from within a chamber of the heart, wherein the first elongate member and the attached wireless electrode assembly are passable through the tube, the first elongate member sized, shaped and positionable for delivering the wireless electrode assembly to the interior of the heart through the tube via an intravascular route, and wherein the wireless electrode assembly is sized, shaped and positionable for being implanted entirely within myocardial tissue of the heart wall; and a second elongate member configured to controllably extend a tissue attachment mechanism from within a housing of the wireless electrode assembly into the surrounding myocardial tissue, the attachment mechanism configured to securely anchor the wireless electrode assembly within the myocardial tissue.