Medical electrical lead and introducer system for implantable pulse generator

A lead and introducer system, comprising:

• an elongated lead body having proximal and distal ends and having at least one electrical conductor extending between said proximal and distal ends;
• a terminal assembly disposed on said proximal end of said lead body;
• an electrode assembly, disposed at the distal end of said lead body, said electrode assembly including a first electrode disposed at the distal end thereof, said first electrode electrically connected to said conductor;
• a curved fixation hook, disposed on said lead at a point spaced back from said first electrode said curved fixation hook extends radially outward from said lead for a first distance and then coils around at least a portion of said lead's circumference;
• a hollow introducer needle, disposed around said lead body, said needle having a longitudinal slit formed in a distal section of said needle.

An implantable lead and introducer system, comprising:

• an elongate, flexible lead body having proximal and distal ends and having at least one electrical conductor extending between said proximal and distal ends;
• an electrode assembly, disposed at the distal end of said lead body, said electrode assembly including a first electrode disposed at the distal end thereof, said first electrode electrically connected to said conductor
• a fixation hook, disposed on said lead at a point spaced back from said first electrode, said fixation hook configured to curve around at least a portion of said lead's circumference and adapted to engage said body tissue upon rotation of said lead;
• an introducer cannula, slidably disposed on said lead body, said cannula having a longitudinal slit formed in a distal section thereof, said slit allowing said distal section of said needle to be slid distally beyond said fixation hook and over said electrode assembly.

A medical electrical lead and introducer system comprising:

• a terminal assembly;
• a lead body having a conductor and insulative sleeve, the lead body further having a longitudinal axis, the conductor having a first end and a second end, the first end coupled to the terminal assembly, the insulative sleeve insulting an outer surface of the conductor between the first end and the second end;
• an electrode coupled to the second end of the conductor;
• a fixation hook having a first portion and a second portion, the first portion extending in a direction radial to the lead body, the first portion attached to the lead body at an angle to the longitudinal axis, the second portion attached to the first portion and curved;
• and
• a hollow introducer sheath disposed over the lead body, electrode and fixation hook, the hollow introducer sheath having a slot at a distal end and a score line, the slot and the score line being collinear, the slot being greater in width than the first portion of the fixation hook.

A medical electrical lead and introducer system comprising:

• a terminal assembly;
• a lead body having a conductor and insulative sleeve, the lead body further having a longitudinal axis, the conductor having a first end and a second end, the first end coupled to the terminal assembly, the insulative sleeve insulting an outer surface of the conductor between the first end and the second end;
• an electrode coupled to the second end of the conductor;
• a curved fixation hook attached to the lead body at a first angle to the longitudinal axis;
• and
• a hollow introducer sheath disposed over the lead body, electrode and fixation hook, the hollow introducer sheath having a slot at a distal end and a score line, the slot and the score line being collinear, the slot being greater in width than the width of the fixation hook.