Self-expanding cooling electrode for renal nerve ablation
First Claim
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1. An apparatus, comprising:
- a metallic tube arrangement comprising a proximal end, a distal end, an inlet, and an outlet, the distal end comprising a coil section and the proximal end comprising the inlet adapted to receive thermal transfer fluid, at least the coil section dimensioned for deployment within a target vessel;
the coil section configured to expand radially to a diameter sufficient to contact an inner wall of the target vessel in response to receiving cooled thermal transfer fluid;
at least a portion of the coil section defining an electrode configured to deliver high frequency energy to target tissue, the proximal end of the metallic tube arrangement configured to electrically couple to an electrical energy generator; and
the coil section configured to contract radially to a diameter smaller than an inner wall of the target vessel in response to removal of the cooled thermal transfer fluid via the outlet.
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Abstract
A metallic tube arrangement includes an electrode region configured to expand radially and contract radially in response to increasing and decreasing a temperature at the electrode region, respectively. The electrode region is configured for intravascular deployment and delivery of high frequency energy to target tissue of a target vessel of the body. The electrode region is configured to expand radially to a diameter sufficient to contact an inner wall of the target vessel in response to a decrease in electrode region temperature and to contract radially to a diameter smaller than a diameter of the target vessel in response to an increase in electrode region temperature.
1495 Citations
18 Claims
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1. An apparatus, comprising:
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a metallic tube arrangement comprising a proximal end, a distal end, an inlet, and an outlet, the distal end comprising a coil section and the proximal end comprising the inlet adapted to receive thermal transfer fluid, at least the coil section dimensioned for deployment within a target vessel; the coil section configured to expand radially to a diameter sufficient to contact an inner wall of the target vessel in response to receiving cooled thermal transfer fluid; at least a portion of the coil section defining an electrode configured to deliver high frequency energy to target tissue, the proximal end of the metallic tube arrangement configured to electrically couple to an electrical energy generator; and the coil section configured to contract radially to a diameter smaller than an inner wall of the target vessel in response to removal of the cooled thermal transfer fluid via the outlet. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. An apparatus, comprising:
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a metallic tube arrangement comprising an electrode region configured to expand radially and contract radially in response to increasing and decreasing a temperature at the electrode region, respectively, the electrode region configured for intravascular deployment and delivery of high frequency energy to target tissue of a target vessel of the body; the electrode region configured to expand radially to a diameter sufficient to contact an inner wall of the target vessel in response to a decrease in electrode region temperature; and the electrode region configured to contract radially to a diameter smaller than a diameter of the target vessel in response to an increase in electrode region temperature. - View Dependent Claims (15, 16, 17, 18)
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Specification