MRI-conditionally safe medical device lead
First Claim
1. An implantable medical device lead comprising:
- a proximal connector;
an inner conductor assembly coupled to a first electrode at a distal end of the inner conductor assembly, the inner conductor assembly comprising one or more filars arranged in a plurality of serially connected current suppression modules, each current suppression module having a tri-layer configuration comprising an inner first coil of the one or more filars wound in a first winding direction, an intermediate second coil of the one or more filars coaxial with the first winding and wound in a second winding direction opposite the first winding direction, and an outer third coil of the one or more filars coaxial with the first and second windings and wound in the first winding direction; and
an outer conductive coil extending coaxially over the inner conductor assembly, the outer conductive coil having a proximal end coupled to the proximal connector and a distal end coupled to a second electrode and including one or more filars wound in the first winding direction from the proximal end to the distal end.
1 Assignment
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Accused Products
Abstract
An implantable medical device lead includes an inner conductor assembly coupled to a first electrode at a distal end of the inner conductor assembly and an outer conductive coil extending coaxially with the inner conductor assembly and coupled to a second electrode. The inner conductor assembly includes one or more filars arranged in a plurality of serially connected current suppression modules. Each current suppression module includes a first coil of the one or more filars wound in a first winding direction, a second coil of the one or more filars coaxial with the first winding and wound in a second winding direction opposite the first winding direction, and a third coil of the one or more filars coaxial with the first and second windings and wound in the first winding direction. The outer conductive coil includes one or more filars wound in the first winding direction.
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Citations
12 Claims
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1. An implantable medical device lead comprising:
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a proximal connector; an inner conductor assembly coupled to a first electrode at a distal end of the inner conductor assembly, the inner conductor assembly comprising one or more filars arranged in a plurality of serially connected current suppression modules, each current suppression module having a tri-layer configuration comprising an inner first coil of the one or more filars wound in a first winding direction, an intermediate second coil of the one or more filars coaxial with the first winding and wound in a second winding direction opposite the first winding direction, and an outer third coil of the one or more filars coaxial with the first and second windings and wound in the first winding direction; and an outer conductive coil extending coaxially over the inner conductor assembly, the outer conductive coil having a proximal end coupled to the proximal connector and a distal end coupled to a second electrode and including one or more filars wound in the first winding direction from the proximal end to the distal end. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A medical device comprising:
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a pulse generator; and a lead including a lead body, a proximal connector, an outer conductive coil extending through the lead body, and an inner conductor assembly extending coaxially within the outer conductive coil, the inner conductor assembly coupled to a first electrode at a distal end of the inner conductor assembly, the inner conductor assembly comprising one or more filars arranged in a plurality of serially connected current suppression modules, each current suppression module having a multi-layer configuration comprising a first inner coil of the one or more filars wound in a first winding direction, a second intermediate coil of the one or more filars coaxial with the first winding and wound in a second winding direction opposite the first winding direction, and a third outer coil of the one or more filars coaxial with the first and second windings and wound in the first winding direction, the outer conductive coil having a proximal end coupled to the proximal connector and a distal end coupled to a second electrode and including one or more filars wound in the first winding direction from the proximal end to the distal end. - View Dependent Claims (8, 9, 10, 11, 12)
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Specification