Intravascular device including high voltage coaxial conductor wiring
AssigneeBiosense Webster (Israel) Ltd.
InventorsKeshava Datta, Anand Rao, Thanh Nguyen, Thomas V. Selkee
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Abstract
Wiring is disclosed herein that is configured to supply IRE ablation signals through a catheter body and is resistant against dielectric breakdown, arcing, and noise during ablation. The wiring includes a highly conductive core, a conductive cover surrounding the core that has lower electrical and/or thermal conductivity than the core, and an insulative jacket surrounding the conductive cover. A catheter including such wiring may be suitable for supplying electrical signals to tissue to perform IRE ablation. In some examples, such a catheter can also be suitable for reversible electroporation and/or RF ablation.
Claims20
An intravascular device comprising:
- an elongated shaft extending along a longitudinal axis and sized to traverse vasculature;
- a distal section comprising a plurality of electrodes configured to deliver at least 900VDC for irreversible electroporation;
- and
- a plurality of wires each electrically joined to a respective electrode of the plurality of electrodes, each of the wires of the plurality of wires extending through at least a portion of the elongated shaft, and each of the wires of the plurality of wires respectively comprising:
- an electrically conductive core material comprising a first electrical conductivity,
- an electrically conductive cover material comprising a second electrical conductivity less than the first electrical conductivity, the electrically conductive cover material circumscribing the electrically conductive core material, and
- an insulative jacket circumscribing the electrically conductive cover material such that no electrical arc is generated between the plurality of wires during delivery of at least 900 Volts to each electrode.
An intravascular device comprising:
- an elongated shaft extending along a longitudinal axis and sized to traverse vasculature;
- a distal section comprising a plurality of electrodes;
- and
- a plurality of wires each electrically joined to a respective electrode of the plurality of electrodes, each of the wires of the plurality of wires extending through at least a portion of the elongated shaft, and each of the wires of the plurality of wires respectively comprising:
- a plurality of strands, each strand respectively comprising an electrically conductive core material comprising a first electrical conductivity and an electrically conductive cover material comprising a second electrical conductivity less than the first electrical conductivity, the electrically conductive cover material circumscribing the electrically conductive core material, and
- an insulative jacket circumscribing the plurality of strands so that no electrical arc is generated between the plurality of wires when at least 900 Volts is provided to each electrode.
Dependencies are inferred from the claim text.