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US 7,013,180 B2Granted
Conditioning of coupled electromagnetic signals on a lead
AssigneeMedtronic, Inc.
InventorsGarry L. Dublin, Gregory J. Haubrich
Life of this patent
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Abstract
A method and an apparatus for reducing coupled electrical energy resulting from an electromagnetic field. Embodiments of the present invention provide for an elongate body having a proximal end portion, a middle portion, and a distal end portion and at least one coil wound about at least one of the proximal end portion, the middle portion, and the distal end portion, the coil to provide for filtering of radio frequency (RF) signal-coupled electrical energy.
Claims8
A medical electrical lead, comprising:
- an elongate body including a proximal end portion, a middle portion and a distal end portion;
- and
- a first coil wound about at least one of said proximal end portion, said middle portion, and said distal end portion, and a second coil wound about at least one of said proximal end portion, said middle portion, and said distal end portion, said first coil being wound more loosely than said second coil such that said second coil provides at least one of a different inductance compared to an inductance provided by said first coil, and a different parallel parasitic capacitance compared to a parasitic capacitance provided by said first coil;
- wherein the coils provide filtering of radio frequency (RF) signal-coupled electrical energy at at least one of said proximal end portion and said distal end portion.
1 more element
A medical electrical lead, comprising:
- a pacing tip;
- an connector end adapted for connecting with an implantable device connector block;
- an electrical flow path extending between the connector end and the pacing tip;
- and
- a plurality of inductive coils, each in series with the electrical flow path;
- wherein at least one of the plurality of inductive coils is adapted to filter RF signal-coupled electrical energy traveling along the flow path toward the pacing tip.
3 more elements
Dependencies are inferred from the claim text.