Electrical stimulation leads and systems having a RF shield along at least the lead and methods of making and using
View Patent ↗An electrical stimulation system includes a lead or lead extension; a control module coupleable to the lead or lead extension; and a continuous conductive RF shield having a first portion extending along at least a portion of the lead and a second portion configured and arranged to form a perimeter band disposed around the housing of the control module. Alternatively, an electrical stimulation lead or lead extension includes a body; first contacts disposed along the distal end portion of the body; second contacts disposed along the proximal end portion of the body; a conductive RF shield disposed over, and extending along, at least a portion of the body; and a non-conductive jacket disposed over the conductive RF shield. The non-conductive jacket defines at least one window which exposes a portion of the conductive RF shield radially beneath the at least one window.
1. An electrical stimulation system, comprising:
a lead having distal end portion, a proximal end portion, and a longitudinal length, the lead comprising a plurality of electrodes disposed along the distal end portion of the lead, a plurality of terminals disposed along the proximal end portion of the lead, and a plurality of conductors coupling the plurality of terminals to the plurality of electrodes;
a control module coupleable to the lead and comprising a housing and an electronic subassembly disposed in the housing, wherein the control module comprises a port configured to receive the proximal end portion of the lead; and
a continuous conductive RF shield comprising a first portion extending along a portion of the lead and a second portion configured and arranged to form a perimeter band disposed around the housing of the control module, wherein, when the end portion of the lead is received in the port of the control module, the first portion or the continuous conductive RF shield extends away from the control module along the portion of the lead.
2. The electrical stimulation system of claim 1 , wherein the first portion forms a tubular structure disposed around the portion of the lead.
3. The electrical stimulation system of claim 1 , wherein the second portion forms the perimeter band that attaches at both ends to the first portion.
4. The electrical stimulation system of claim 1 , wherein the second portion forms the perimeter band that is attached at one end to the first portion and is configured and arranged to terminate at a position along a perimeter of the control module.
5. The electrical stimulation system of claim 1 , wherein the housing of the control module comprises a conductive portion, wherein the continuous conductive RF shield is conductively coupled to the conductive portion of the housing.
6. The electrical stimulation system of claim 1 , wherein the control module is coupled to the lead and the continuous conductive RF shield forms the perimeter band.
7. The electrical stimulation system of claim 1 , wherein the lead comprises a non-conductive jacket and at least part of the first portion of the continuous conductive RF shield is disposed radially beneath the non-conductive jacket.
8. The electrical stimulation system of claim 7 , wherein the non-conductive jacket defines at least one window which exposes a portion of the continuous conductive RF shield radially beneath the at least one window.
9. The electrical stimulation system of claim 8 , wherein the at least one window is a plurality of windows.
10. The electrical stimulation system of claim 7 , wherein each of the at least one window extends entirely around a circumference of the non-conductive jacket.
11. The electrical stimulation system of claim 7 , further comprising at least one conductive contact, wherein each conductive contact is disposed in a one of the at least one window and is conductively attached to the continuous conductive RF shield.
12. The electrical stimulation system of claim 7 , wherein the lead comprises a lead body and the non-conductive jacket is part of the lead body.
13. The electrical stimulation system of claim 1 , wherein the continuous conductive RF shield comprises a braided structure or a set of cross-linked strips.
14. The electrical stimulation system of claim 1 , wherein the continuous conductive RF shield comprises a coiled structure.
15. The electrical stimulation system of claim 1 , wherein the continuous conductive RF shield comprises a mesh.
16. The electrical stimulation system of claim 1 , wherein the continuous conductive RF shield terminates proximal to the electrodes.
17. The electrical stimulation system of claim 1 , wherein the lead is configured for deep brain stimulation and the continuous conductive RF shield terminates proximal to a portion of the lead configured for implantation in a cranium or brain.
18. The electrical stimulation system of claim 1 , wherein the proximal end portion of the lead is disposed within the port of the control module and the second portion of the continuous conductive RF shield is disposed around the housing of the control module.
19. The electrical stimulation system of claim 18 , wherein the second portion forms the perimeter band that is attached at one end to the first portion and terminates at a position along a perimeter of the control module.
20. The electrical stimulation system of claim 18 , wherein the second portion forms the perimeter band that attaches at both ends to the first portion and is looped around the control module.