Abstract: The effects of acute left ventricular heart failure are mitigated by temporary support of the cardiac function through use of either one or both of an expendable temporary one-way valve positioned in the aorta, having a collapsible frame that is expanded upon deployment, and/or a temporary dilation device positioned in the descending aorta for expanding upon deployment to increase the diameter of the associated portion of the aorta. When used together, the dilation device is positioned distal to the temporary one-way valve.

Abstract: A surgically implantable radioactive wrap is positioned around the wall of a body vessel, duct or passageway to maintain patency of these structures by mitigating overexuberant cellular proliferation. Such excessive cellular growth may occur as the result of a disease process or following a trauma or an intentional surgical or intravascular intervention. The device provides for delivery of ionizing radiation to a localized target tissue site. Integral design features provide for the shielding of non-targeted tissues and for the attachment of the device to the target tissue structure. A radiation attenuation element serves to absorb extraneous low-energy electrons incidentally emitted by the treatment source and provides for a more uniform radiation dose distribution through the full thickness of the target tissues. The wrap can be easily applied with minimal handling and with limited radiation exposure to operating personnel.