Catheter assemblies for neuromodulation proximate a bifurcation of a renal artery and associated systems and methods
First Claim
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1. A neuromodulation catheter assembly, comprising:
- a shaft having a proximal portion and a bifurcated distal portion, wherein the shaft is configured to deliver the distal portion proximate a branch point in a renal blood vessel;
a first therapeutic arm joined to and extending from the distal portion of the shaft and configured to be delivered into a first branch vessel extending distally from the branch point, the first therapeutic arm having a first energy delivery element;
a second therapeutic arm joined to and extending from the distal portion of the shaft and configured to be delivered into a second branch vessel extending distally from the branch point, the second therapeutic arm having a second energy delivery element; and
means for drawing the first and second energy delivery elements towards each other,wherein an angle formed between the first and second therapeutic arms at the bifurcated distal portion is less than a takeoff angle of the branch point.
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Abstract
Catheter assemblies for neuromodulation proximate a renal artery bifurcation and associated systems and methods are disclosed herein. A catheter assembly configured in accordance with a particular embodiment of the present technology can include a shaft having a proximal portion, a distal portion, and two therapeutic arms extending from the distal portion. The shaft can be configured to deliver the distal portion to a treatment site proximate a branch point or bifurcation in a renal blood vessel. The therapeutic arms can include energy delivery elements that are configured to deliver the therapeutically-effective energy to renal nerves proximate the branch point.
177 Citations
16 Claims
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1. A neuromodulation catheter assembly, comprising:
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a shaft having a proximal portion and a bifurcated distal portion, wherein the shaft is configured to deliver the distal portion proximate a branch point in a renal blood vessel; a first therapeutic arm joined to and extending from the distal portion of the shaft and configured to be delivered into a first branch vessel extending distally from the branch point, the first therapeutic arm having a first energy delivery element; a second therapeutic arm joined to and extending from the distal portion of the shaft and configured to be delivered into a second branch vessel extending distally from the branch point, the second therapeutic arm having a second energy delivery element; and means for drawing the first and second energy delivery elements towards each other, wherein an angle formed between the first and second therapeutic arms at the bifurcated distal portion is less than a takeoff angle of the branch point. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method of treating a human patient, the method comprising:
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delivering a first energy delivery element on a first therapeutic arm of a catheter assembly to a first treatment site within a first branch vessel extending distally from a branch point of a renal blood vessel; delivering a second energy delivery element on a second therapeutic arm of the catheter assembly to a second treatment site within a second branch of the renal blood vessel extending distally from the branch point, wherein an angle formed between the first and second therapeutic arms of the catheter assembly is less than a takeoff angle of the branch point; permitting the first and second therapeutic arms to be drawn toward one another such that the first energy delivery element contacts a vessel wall at the first treatment site and the second energy delivery element contacts a vessel wall at the second treatment site; and applying therapeutically-effective energy to target tissue via the first and second energy delivery elements. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16)
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Specification