Insulative structure for MRI compatible leads
First Claim
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1. A medical device lead comprising:
- a proximal end configured to couple the lead to a medical device;
an insulative lead body extending distally from the proximal end;
a first conductor coil coupled to the proximal end and extending through the lead body, the first conductor coil coupled to a first electrode at a distal end of the first conductor coil, the first conductor coil having a first inner lumen; and
a first magnetically impregnated polymer layer adjacent the first conductor coil and extending within the first inner lumen of the first conductor coil, the first magnetically impregnated polymer layer configured to increase the self inductance of the first conductor coil to reduce RF energy absorption.
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Abstract
A medical device lead includes a proximal connector, an insulative lead body extending distally from the proximal connector. The proximal connector is configured to couple the lead to a pulse generator. A first conductive coil is coupled to the proximal connector and extends through the lead body. The first conductive coil is coupled to a first electrode at a distal end of the first conductive coil. A first magnetically impregnated polymer layer is adjacent the first conductive coil.
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Citations
20 Claims
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1. A medical device lead comprising:
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a proximal end configured to couple the lead to a medical device; an insulative lead body extending distally from the proximal end; a first conductor coil coupled to the proximal end and extending through the lead body, the first conductor coil coupled to a first electrode at a distal end of the first conductor coil, the first conductor coil having a first inner lumen; and a first magnetically impregnated polymer layer adjacent the first conductor coil and extending within the first inner lumen of the first conductor coil, the first magnetically impregnated polymer layer configured to increase the self inductance of the first conductor coil to reduce RF energy absorption. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A medical device lead comprising:
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an insulative lead body; a first lead conductor extending through the lead body, the first lead conductor coupled to a first electrode at a distal end of the first lead conductor, the first lead conductor coiled to have a first inner lumen; and a first magnetically impregnated insulative layer between the first lead conductor and a central lumen of the medical device lead, the first magnetically impregnated insulative layer extending within the first inner lumen of the first lead conductor and configured to increase the self inductance of the first coiled conductor to reduce RF energy absorption. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16)
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17. A medical device, comprising:
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a pulse generator; and a lead couplable to the pulse generator and including a lead body, an outer conductive coil extending through the lead body, and an inner conductive coil extending coaxially with the outer conductive coil, the lead further including a first insulative layer between the inner conductive coil and a central lumen of the lead, and a second insulative layer between the inner conductive coil and outer conductive coil, wherein at least one of the first and second insulative layers includes a magnetic material configured to increase the self inductance of the outer conductive coil to reduce RF energy absorption. - View Dependent Claims (18, 19, 20)
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Specification