Selectable eccentric remodeling and/or ablation of atherosclerotic material
First Claim
1. A catheter system for eccentric remodeling of atherosclerotic material of a blood vessel of a patient, the system comprising:
- an elongate flexible catheter body having a proximal end and a distal end with an axis therebetween;
a radially expandable structure near the distal end of the catheter body;
a plurality of energy delivery surfaces, each energy delivery surface oriented radially when the expandable structure expands so as to provide an array of energy delivery surfaces distributed circumferentially about the axis of the blood vessel;
an atherosclerotic material detector coupled to the catheter body for circumferential atherosclerotic material detection along the blood vessel;
a power source electrically coupled to the energy delivery surfaces; and
a controller coupling the power source to the array for selectively energizing an eccentric subset of the energy delivery surfaces in response to the detected atherosclerotic material, the power source energizing the energy delivery surfaces so as to eccentrically remodel the detected atherosclerotic material along the blood vessel.
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Accused Products
Abstract
A catheter and catheter system for eccentric remodeling and/or removal of atherosclerotic material of a blood vessel of a patient include an elongate flexible catheter body with a radially expandable structure. A plurality of electrodes or other electrosurgical energy delivery surfaces can radially engage atherosclerotic material when the structure expands. An atherosclerotic material detector near the distal end of the catheter body may measure circumferential atherosclerotic material distribution, and a power source selectively energizes the electrodes to eccentrically remodel the measured atherosclerotic material.
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Citations
20 Claims
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1. A catheter system for eccentric remodeling of atherosclerotic material of a blood vessel of a patient, the system comprising:
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an elongate flexible catheter body having a proximal end and a distal end with an axis therebetween; a radially expandable structure near the distal end of the catheter body; a plurality of energy delivery surfaces, each energy delivery surface oriented radially when the expandable structure expands so as to provide an array of energy delivery surfaces distributed circumferentially about the axis of the blood vessel; an atherosclerotic material detector coupled to the catheter body for circumferential atherosclerotic material detection along the blood vessel; a power source electrically coupled to the energy delivery surfaces; and a controller coupling the power source to the array for selectively energizing an eccentric subset of the energy delivery surfaces in response to the detected atherosclerotic material, the power source energizing the energy delivery surfaces so as to eccentrically remodel the detected atherosclerotic material along the blood vessel. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A system for eccentric remodeling of atherosclerotic material of a blood vessel of a patient, the system comprising:
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an elongate body having a proximal end and a distal end with an axis therebetween; a radially expandable structure near the distal end of the catheter body; a plurality of electrodes oriented to be urged radially along the blood vessel against the material when the expandable structure expands within the body lumen so as to define an axisymmetric electrode array; an atherosclerotic material detector coupled to the elongate body for ircumferential measurement of the material registered to the electrode array; and a power source electrically coupled to the electrodes, the power source selectably energizing an eccentric subset of the electrodes so as to eccentrically remodel the measured material.
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Specification