Lead electrode for use in an MRI-safe implantable medical device
AssigneeMedtronic, Inc.
InventorsCarl D. Wahlstrand, Thomas Barry Hoegh, James M. Olsen, Stephen L. Bolea, Gregory A. Hrdlicka
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Abstract
A medical lead is configured to be implanted into a patient's body and comprises a lead body, and an electrode coupled to the lead body. The electrode comprises a first section configured to contact the patient's body, and a second section electrically coupled to the first section and configured to be capacitively coupled to the patient's body.
Claims16
A method of making a lead, comprising:
- providing a proximal electrode and a distal electrode, the distal electrode including a first section and a second section;
- coupling the proximal electrode and the distal electrode to a lead body such that the lead body overlaps the second section of the distal electrode while the first section of the distal electrode is exposed;
- and
- electrically coupling the proximal electrode to the distal electrode.
A method of providing an MRI scan on a patient having an implantable medical lead, comprising:
- providing the implantable lead with a proximal electrode, a distal electrode that is electrically coupled to the proximal electrode and has a first section and a second section, and a lead body coupled to the proximal electrode and the distal electrode such that the lead body overlaps the second section while the first section is exposed;
- receiving RF energy from the MRI scan into the implantable medical lead;
- and
- conducting the RF energy via a capacitive coupling from the second section into tissue of the patient adjacent the distal electrode.
A method of making a lead, comprising:
- providing a proximal electrode, a distal stimulation electrode, and a distal floating electrode;
- coupling the proximal electrode, the distal stimulation electrode, and the distal floating electrode to a lead body and creating a first capacitive coupling between the distal floating electrode and the distal stimulation electrode;
- and
- electrically coupling the proximal electrode to the distal stimulation electrode.
A method of providing an MRI scan on a patient having an implantable medical lead, comprising:
- providing the implantable lead with a proximal electrode, a distal stimulation electrode that is electrically coupled to the proximal electrode, a distal floating electrode, and a lead body coupled to the proximal electrode, the distal stimulation electrode, and the distal floating electrode;
- receiving RF energy from the MRI scan into the implantable medical lead;
- and
- conducting the RF energy via a first capacitive coupling from the distal stimulation electrode to the distal floating electrode and from the distal floating electrode into tissue of the patient adjacent the distal floating electrode.
Dependencies are inferred from the claim text.