MRI-safe implantable medical device
First Claim
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1. A medical lead for use in an implantable stimulation system of the type which includes a stimulator for generating electrical stimulation therapy, the lead comprising:
- an implantable elongate insulating body;
an electrode on a distal end of the insulating body; and
an electrical conductor within the insulating body that is connected to the electrode, the conductor having an absolute impedance of at least 15 ohms per centimeter at 64 MHz.
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Abstract
A medical lead is provided for use in a pulse stimulation system of the type which includes a pulse generator for producing electrical stimulation therapy. The lead comprises an elongate insulating body and at least one electrical conductor within the insulating body. The conductor has a proximal end configured to be electrically coupled to the pulse generator and has a DC resistance in the range of 375-2000 ohms. At least one distal electrode is coupled to the conductor.
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Citations
20 Claims
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1. A medical lead for use in an implantable stimulation system of the type which includes a stimulator for generating electrical stimulation therapy, the lead comprising:
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an implantable elongate insulating body; an electrode on a distal end of the insulating body; and an electrical conductor within the insulating body that is connected to the electrode, the conductor having an absolute impedance of at least 15 ohms per centimeter at 64 MHz. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A medical lead for use in an implantable stimulation system of the type which includes a stimulator for generating electrical stimulation therapy, the lead comprising:
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an implantable elongate insulating body; an electrode on a distal end of the insulating body; an electrical conductor within the insulating body that is connected to the electrode, the conductor having an absolute impedance of at least 15 ohms per centimeter at 64 MHz, the conductor having discrete elements positioned at multiple locations along the conductor where each of the discrete elements contributes to the absolute impedance. - View Dependent Claims (8, 9, 10)
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11. A medical lead for use in an implantable stimulation system of the type which includes a stimulator for generating electrical stimulation therapy, the lead comprising:
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an implantable elongate insulating body; an electrode on a distal end of the insulating body; an electrical conductor within the insulating body that is connected to the electrode, the conductor having an absolute impedance of at least 15 ohms per centimeter at 64 MHz while having a DC resistance less than 15 ohms per centimeter. - View Dependent Claims (12, 13, 14, 15, 16)
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17. A medical lead for use in an implantable stimulation system of the type which includes a stimulator for generating electrical stimulation therapy, the lead comprising:
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an implantable elongate insulating body; a conductive body on a distal end of the insulating body; an electrical conductor within the insulating body, the conductor having an absolute impedance of at least 15 ohms per centimeter at 64 MHz, the conductor having an inductor that is disposed within the conductive body. - View Dependent Claims (18, 19, 20)
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Specification