Steerable coronary sinus defibrillation lead

An implantable cardiac stimulation lead comprising an elongate lead body having a proximal and a distal end and an interior surface forming a lumen extending through said elongate lead body;

• an electrical connector at said proximal end;
• a first electrode near said distal end;
• an electrical conductor electrically connecting said electrical connector and said electrode;
• a filament slidingly received in said lumen and extending from said distal end of said lead body to said proximal end, said filament being secured to an interior wall of said lead body at said distal end;
• a torque tube coupled with the lead body;
• and
• said lead body has a preformed, permanent bend adjacent said distal end of said lead body and wherein said filament is secured to said interior wall distal to said bend and adjacent an inside radius of said bend.

An implantable cardiac defibrillation lead comprising

• an elongate lead body having a proximal and a distal end and an interior surface forming a lumen extending through said elongate lead body, said lead body having a bend therein adjacent said distal end;
• a means for bending the distal end of the lead body while the lead body is implanted within a body;
• an anchor block disposed adjacent said distal end of the lead body;
• a torque tube coupled with the anchor block, the torque tube including two or more partially circumferential slots;
• an electrical connector at said proximal end;
• a coil defibrillation electrode disposed on said lead body near said distal end, at least part of said electrode enclosing said bend, and
• an electrical conductor electrically connecting said electrical connector and said electrode.

An implantable cardiac stimulation lead comprising

• an elongate lead body having a proximal and a distal end and an interior surface forming a lumen extending through said elongate lead body, said lead body having a bend therein adjacent said distal end;
• an electrical connector at said proximal end;
• a first electrode near said distal end,
• an electrical conductor electrically connecting said electrical connector and said electrode,
• an anchor block adjacent said distal end of said lead body, and proximal to said bend, and
• an elongate torque-transmitting member fixedly coupled to said anchor and extending through said lumen to said proximal end of said elongate lead body.