Patent ID: 7092766
Filing Date: 2006-08-15
Classification: A61N

Abstract:
1. An implantable lead adapted to transmit electrical signals between a connector assembly on a proximal end of the lead and at least one electrode carried by a distal end of the lead, the lead comprising: a helical fixation element extendable and retractable from the distal end of the lead, the distal end comprising (a) an inner header tube comprising an electrically conductive material that is substantially transparent fluoroscopically to allow an unobstructive fluoroscopic view of the helical fixation element, the helical fixation element housed within the inner header tube when in a retracted position, and the inner header tube having a distal end, (b) an outer header tube comprising an electrically insulating material, the outer header tube being coaxial to the inner header tube, and (c) a distal tip collar attached to the distal end of the inner header tube, the distal tip collar comprising a material that is substantially opaque fluoroscopically and electrically conductive, and the distal tip collar being electrically coupled to the distal end of the inner header tube.