Patent ID: 8219211

Claim:
A medical electrical lead, comprising: a lead body defining at least a first lead body lumen, the lead body extending between a distal end and a proximal end; a connector assembly at the proximal end of the lead body; an electrode head assembly extending between a proximal end, fixedly engaged with the distal end of the lead body and forming a joint therewith, and a distal end, wherein the electrode head assembly comprises at least one electrode, and further wherein a body of the electrode head assembly extending between the distal end and the proximal end defines an electrode head assembly lumen communicating with the lead body lumen when the electrode head assembly is fixedly engaged with the distal end of the lead body; at least a first conductor extending within the first lead body lumen and the electrode head assembly lumen; and an insulating member, extending across the joint through at least a portion of the electrode head assembly lumen defined by the body of the electrode head assembly and through at least a portion of the first lead body lumen, electrically isolating the conductor.