Renal ablation electrode with force-activatable conduction apparatus
First Claim
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1. An apparatus, comprising:
- a catheter comprising a flexible shaft having a proximal end, a distal end, and a length sufficient to access a patient'"'"'s renal artery relative to a percutaneous access location;
a conductor arrangement extending along the shaft between the proximal and distal ends of the shaft;
an electrode provided at the distal end of the shaft, coupled to the conductor arrangement, and dimensioned for deployment within the renal artery; and
a deformable cover provided at the electrode and comprising a force-activatable conduction apparatus, the cover configured to prevent conduction of electrical energy through the cover in the absence of cover deformation, and to conduct electrical energy only through a region or regions of the cover subject to deformation, the electrical energy sufficient to ablate perivascular renal nerves proximate the deformed region or regions of the cover.
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Abstract
An electrode is provided at a distal end of a catheter and dimensioned for deployment within a renal artery. A deformable cover of the electrode incorporates a force-activatable conduction apparatus. The cover is configured to conduct electrical energy only through a region or regions of the cover subject to deformation due to contact with a wall of the target vessel. The electrical energy is sufficient to ablate perivascular renal nerves proximate the deformed region or regions of the electrode cover. The cover is configured to prevent conduction of electrical energy through the cover in the absence of a deformation force applied to the cover.
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Citations
20 Claims
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1. An apparatus, comprising:
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a catheter comprising a flexible shaft having a proximal end, a distal end, and a length sufficient to access a patient'"'"'s renal artery relative to a percutaneous access location; a conductor arrangement extending along the shaft between the proximal and distal ends of the shaft; an electrode provided at the distal end of the shaft, coupled to the conductor arrangement, and dimensioned for deployment within the renal artery; and a deformable cover provided at the electrode and comprising a force-activatable conduction apparatus, the cover configured to prevent conduction of electrical energy through the cover in the absence of cover deformation, and to conduct electrical energy only through a region or regions of the cover subject to deformation, the electrical energy sufficient to ablate perivascular renal nerves proximate the deformed region or regions of the cover. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. An apparatus, comprising:
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a catheter comprising a flexible shaft having a proximal end, a distal end, and a length sufficient to access a target vessel of the body relative to a percutaneous access location; a conductor arrangement extending along the shaft between the proximal and distal ends of the shaft; an electrode provided at the distal end of the shaft, coupled to the conductor arrangement, and dimensioned for deployment within the target vessel; and a deformable cover provided at the electrode and comprising a force-activatable conduction apparatus, the cover configured to prevent conduction of electrical energy through the cover in the absence of cover deformation, and to conduct electrical energy only through a region or regions of the cover subject to deformation, the electrical energy sufficient to ablate target tissue proximate the deformed region or regions of the cover. - View Dependent Claims (13, 14, 15, 16, 17, 18)
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19. A method, comprising:
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situating an electrode comprising a deformable cover within a target vessel; deforming one or more regions of the cover in response to forcing the cover against a wall of the target vessel; conducting ablative electrical energy only through the one or more deformed cover regions and into target tissue proximate the one or more deformed cover regions; and preventing conduction of ablative electrical energy through the cover in the absence of cover deformation. - View Dependent Claims (20)
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Specification