Intravascular implantable device having superior anchoring arrangement

A method of providing an intravascular device and instructions for implanting the intravascular device, comprising:

• providing an intravascular device having an elongate device body with a proximal end and a distal end that is adapted for chronic implantation within the vasculature of a patient and that includes a distal portion of the intravascular device proximate the distal end of the elongate device body;
• and
• providing instructions for chronically implanting the intravascular device substantially wholly within the vasculature of a patient, the instructions including:
• introducing the intravascular device into the vasculature of the patient;
• advancing the intravascular device until the distal portion is positioned within a target vessel superior to the heart of the patient;
• and
• anchoring the distal portion of the intravascular device within the target vessel, such that the distal portion of the elongate device body is mechanically secured within the vasculature of the patient while a proximal portion of the elongate device body proximate the proximal end of the elongate device body is left mechanically unsecured within the vasculature of the patient.