Systems and Methods for Transeptal Cardiac Procedures, Including Tissue Sealing Members Associated Methods

摘要

Systems and methods for transeptal cardiac procedures are disclosed. A patient treatment device in accordance with a particular embodiment includes a catheter having a proximal end, a distal end, a working portion toward the distal end, and an electrical energy path coupleable to a source of electrical energy. The device can further include a tissue penetrating member carried by the catheter and an electrode device carried by the working portion of the catheter and movable along the tissue penetrating member. The electrode device can include a collapsible stranded conductive material coupled to the electrical signal path and being changeable between a deployed position and a stowed position. The conductive material can be elongated along a deployment axis when in the stowed position, and can be contracted along the deployment axis and expanded transverse to the deployment axis when in the deployed position.