Patent ID: 8311633

Claim:
An intravascular device comprising: an elongate device body with a proximal end and a proximal portion proximate the proximal end and a distal end that is adapted for chronic implantation within vasculature of a patient and that includes a distal portion of the intravascular device proximate the distal end of the elongate device body, wherein the intravascular device comprises an intravascular pulse generator device and further includes at least one lead having at least one electrode thereon extending from the proximal portion of the elongate device body with a free end of the lead adapted to be positioned proximate a chamber of the heart; and an anchor that is radially expandable and is adapted to anchor only the distal portion of the intravascular device within a target vessel located superior to a heart of the patient, such that the proximal portion of the elongate device body is left mechanically unsecured within the vasculature of the patient.