Integrated conductor coil electrode

A system comprising:

• an implantable medical device;
• an implantable medical lead comprising:
• a lead body extending from a proximal end to a distal end, the lead body comprising:
• an inner insulation layer defining an inner insulation layer lumen;
• and
• an outer insulation layer;
• a sleeve mechanically supported by the lead body at the distal end of the lead body;
• and
• an uninsulated conductor coil electrically connected to the implantable medical device, the uninsulated conductor coil comprising:
• a first portion having a first inner diameter, wherein the first portion is positioned between the inner insulation layer and the outer insulation layer;
• and
• a second portion extending distally from the outer insulation layer, the second portion having a second inner diameter sized to receive the sleeve,
• wherein the uninsulated conductor coil terminates at a distal end of the second portion of the uninsulated conductor coil, and
• wherein the sleeve extends distally from the distal end of the second portion of the uninsulated conductor coil.

A method of manufacturing an implantable medical lead, the method comprising:

• forming a sleeve of the implantable medical lead, wherein the sleeve comprises a distal electrode;
• electrically connecting an inner conductor coil to the distal electrode;
• forming an inner insulation layer that covers the inner coil;
• forming an uninsulated conductor coil defining a coil lumen, wherein the uninsulated conductor coil comprises:
• a first portion having a first inner diameter;
• and
• a second portion having a second inner diameter sized to receive the sleeve, wherein the second inner diameter is greater than the first inner diameter, wherein the uninsulated conductor coil terminates at a distal end of the second portion of the uninsulated conductor coil, wherein when the sleeve is received within the second portion, the sleeve extends distally from the distal end of the second portion;
• positioning at least a part of the inner insulation layer within the coil lumen;
• connecting the second portion to the sleeve;
• and
• forming an outer insulation layer that covers the first portion of the uninsulated conductor coil without covering the second portion of the uninsulated conductor coil such that the second portion remains exposed.