Magnetic resonance imaging interference immune device
AssigneeMedtronic, Inc.
InventorsRobert W. Gray, Jeffrey L. Helfer
Life of this patent
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Abstract
A medical assembly includes a multi-wire lead having a plurality of coiling loops. The multi-wire lead has a gap region and a non-gap region. The gap region has adjacent coiling loops of the multi-wire lead with gaps therebetween so as to form different impedance in the gap region than impedance in the non-gap region. The non-gap region has adjacent coiling loops of the multi-wire lead with no gaps therebetween. The gaps may provide inter-loop capacitance. The multi-wire lead may have a plurality of gap regions, each gap region having a non-gap region therebetween.
Claims29
A medical assembly, comprising:
- a multi-wire lead having a plurality of coiling loops;
- said multi-wire lead having a gap region and a non-gap region;
- said gap region having adjacent coiling loops of said multi-wire lead with predefined gaps therebetween;
- said non-gap region having adjacent coiling loops of said multi-wire lead with no gaps therebetween.
A medical assembly, comprising:
- a multi-wire lead having a plurality of coiling loops;
- said multi-wire lead having a gap region and a non-gap region;
- said gap region having adjacent coiling loops of said multi-wire lead with gaps therebetween wherein a width of said gap is adjusted to modify an electrical property of said multi-wire lead;
- said non-gap region having adjacent coiling loops of said multi-wire lead with no gaps therebetween.
A medical assembly, comprising:
- a multi-wire lead having a plurality of coiling loops;
- said multi-wire lead having a gap region and a non-gap region;
- said gap region having adjacent coiling loops of said multi-wire lead with gaps therebetween wherein said gaps include a material therein, said material adjusting an electrical property of said multi-wire lead;
- said non-gap region having adjacent coiling loops of said multi-wire lead with no gaps therebetween.
A medical assembly, comprising:
- a multi-wire lead having a plurality of wires, each wire having a plurality of coiling loops;
- said multi-wire lead having a gap region and a non-gap region;
- said gap region having a first gap between a coiling loop of a first wire and a coiling loop of a second wire;
- said non-gap region having a second gap between a coiling loop of a first wire and a coiling loop of a second wire, said first gap being greater than said second gap.
A medical assembly, comprising:
- a multi-wire lead having a plurality of wires, each wire having a plurality of coiling loops;
- said multi-wire lead having a gap region and a non-gap region;
- said gap region having a first lead intra-coiling loop gap between a first coiling loop of a first wire and a second coiling loop of the first wire;
- said non-gap region having a second lead intra-coiling loop gap between a third coiling loop of the first wire and a fourth coiling loop of the first wire, said first lead intra-coiling loop gap being greater than said lead intra-coiling loop second gap.
A medical assembly, comprising:
- a multi-wire lead having a plurality of conductive wires and a plurality of non-conductive wires, each conductive wire having a plurality of coiling loops, each non-conductive wire having a plurality of coiling loops;
- said coiling loops of a non-conductive wire being positioned between adjacent coiling loops of two conductive wires to form a lead intra-coiling loop non-conductive gap between the adjacent coiling loops of two conductive wires.
Dependencies are inferred from the claim text.