Lead electrode for use in an MRI-safe implantable medical device
First Claim
1. An electrode assembly for use in a pulse stimulation system configured to be implanted in a patient'"'"'s body and of the type that includes a pulse generator and a stimulation lead having a proximal end electrically coupled to the pulse generator and having a distal region, the electrode assembly comprising:
- a paddle-shaped electrode body having first and second substantially opposite sides, the body coupled to the distal region of the stimulation lead;
at least one electrode on said first side and electrically coupled to the stimulation lead for delivering therapy to the patient;
a floating electrode on said second side and configured to contact patient body tissue; and
a filter coupled between said at least one electrode and said floating electrode for diverting RF energy toward said floating electrode and away from said at least one electrode.
2 Assignments
0 Petitions
Accused Products
Abstract
A pulse stimulation system configured for implantation into a patient'"'"'s body comprises a pulse stimulator, a conductive stimulation lead having a proximal end electrically coupled to the pulse simulator and having a distal end, and an electrode assembly coupled to the distal end of the stimulation lead. The electrode assembly comprises an electrode body having a therapy electrode thereon that is electrically coupled to the stimulation lead for delivering therapy to the patient. A floating electrode is configured to contact the patient'"'"'s body tissue and has a surface area substantially larger than that of the therapy electrode. A filter is coupled between the therapy electrode and the floating electrode for diverting RF energy toward the floating electrode and away from the therapy electrode.
463 Citations
61 Claims
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1. An electrode assembly for use in a pulse stimulation system configured to be implanted in a patient'"'"'s body and of the type that includes a pulse generator and a stimulation lead having a proximal end electrically coupled to the pulse generator and having a distal region, the electrode assembly comprising:
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a paddle-shaped electrode body having first and second substantially opposite sides, the body coupled to the distal region of the stimulation lead; at least one electrode on said first side and electrically coupled to the stimulation lead for delivering therapy to the patient; a floating electrode on said second side and configured to contact patient body tissue; and a filter coupled between said at least one electrode and said floating electrode for diverting RF energy toward said floating electrode and away from said at least one electrode. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
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24. A pulse stimulation system configured for implantation into a patient'"'"'s body, the system comprising:
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a pulse generator; a conductive stimulation lead having a proximal end electrically coupled to said pulse generator and having a distal end; and an electrode assembly coupled to said distal end and comprising; a paddle-shaped electrode body having first and second substantially opposite sides, the body coupled to said distal end of said stimulation lead; at least one electrode on said first side and electrically coupled to said stimulation lead for delivering therapy to the patient; a floating electrode on said second side and configured to contact patient body tissue; and a filter coupled between said at least one electrode and said floating electrode for diverting RF energy toward said floating electrode and away from said at least one electrode. - View Dependent Claims (25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38)
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39. An electrode assembly for use in a pulse stimulation system configured to be implanted in a patient'"'"'s body and of the type that includes a pulse generator and a stimulation lead having a proximal end electrically coupled to the pulse generator and having a distal end, the electrode assembly comprising:
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a paddle-shaped electrode body coupled to the distal end of the stimulator lead, said electrode body having first and second sides; at least one conductive filer within the stimulation lead and electrically coupled to the pulse generator; at least one electrode positioned on said first side and coupled to said filer and configured to deliver therapy to the patient; a conductive mesh positioned on said second side and configured to contact the patient'"'"'s body tissue; and a high-pass filter coupled between said at least one electrode and said conductive mesh for diverting RF energy toward said conductive mesh and away from said at least one electrode. - View Dependent Claims (40, 41, 42, 43, 44, 45, 46, 47, 48)
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49. An electrode assembly for use in a pulse stimulation system configured to be implanted in a patient'"'"'s body and of the type that includes a pulse generator and a stimulation lead having a proximal end electrically coupled to the pulse generator and having a distal region, the electrode assembly comprising:
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a paddle-shaped electrode body having first and second substantially opposite sides, the body coupled to the distal region of the stimulation lead; at least one electrode within said body and electrically coupled to the stimulation lead, said at least one electrode having a first side for delivering therapy to the patient and having a second side; and alternating layers of conducting and non-conducting material stacked on said second side to capacitively couple said electrode to the patient'"'"'s body tissue for diverting RF energy to the patient'"'"'s body tissue. - View Dependent Claims (50, 51, 52, 53, 54, 55)
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56. An electrode assembly for use in a pulse stimulation system configured to be implanted in a patient'"'"'s body and of the type that includes a pulse generator and a stimulation lead having a proximal end electrically coupled to the pulse generator and having a distal region, the electrode assembly comprising:
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a paddle-shaped electrode body having first and second substantially opposite sides, the body coupled to the distal region of the stimulation lead; at least one electrode within said body and electrically coupled to the stimulation lead, said electrode having a first side for delivering therapy to the patient, and said electrode having a second side; and a layer of dielectric material on said second side and configured to capacitively couple said electrode to the patient'"'"'s body for diverting RF energy to the patient'"'"'s body. - View Dependent Claims (57, 58, 59, 60, 61)
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Specification