Neuromodulation catheters having jacketed neuromodulation elements and related devices, systems, and methods
First Claim
1. A neuromodulation catheter, comprising:
- an elongate shaft; and
a neuromodulation element operably connected to the shaft via a distal end portion of the shaft, the neuromodulation element being movable from a low-profile delivery state to a radially expanded deployed state, the neuromodulation element including;
a hypotube segment configured to have a first shape when the neuromodulation element is in the delivery state and a second shape when the neuromodulation element is in the deployed state, the second shape being more helical than the first;
a tubular jacket disposed around at least a portion of an outer surface of the hypotube segment, an outer surface of the jacket defining reduced-diameter segments spaced apart along its longitudinal; and
band electrodes respectively seated in the reduced-diameter segments and respectively forming closed loops extending circumferentially around the jacket,wherein a minimum inner diameter of the band electrodes is smaller than a maximum outer diameter of jacket between the reduced-diameter segments.
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Abstract
A neuromodulation catheter in accordance with a particular embodiment includes an elongate shaft and a neuromodulation element operably connected to the shaft. The shaft includes a proximal hypotube segment at its proximal end portion and a jacket disposed around at least a portion of an outer surface of the hypotube segment. The jacket may be made at least partially of a polymer blend including polyether block amide and polysiloxane. The neuromodulation element includes a distal hypotube segment and a tubular jacket disposed around at least a portion of an outer surface of the distal hypotube segment. The jacket has reduced-diameter segments spaced apart along its longitudinal axis. The neuromodulation element further includes band electrodes respectively seated in the reduced-diameter segments and respectively forming closed loops extending circumferentially around the jacket.
448 Citations
27 Claims
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1. A neuromodulation catheter, comprising:
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an elongate shaft; and a neuromodulation element operably connected to the shaft via a distal end portion of the shaft, the neuromodulation element being movable from a low-profile delivery state to a radially expanded deployed state, the neuromodulation element including; a hypotube segment configured to have a first shape when the neuromodulation element is in the delivery state and a second shape when the neuromodulation element is in the deployed state, the second shape being more helical than the first; a tubular jacket disposed around at least a portion of an outer surface of the hypotube segment, an outer surface of the jacket defining reduced-diameter segments spaced apart along its longitudinal; and band electrodes respectively seated in the reduced-diameter segments and respectively forming closed loops extending circumferentially around the jacket, wherein a minimum inner diameter of the band electrodes is smaller than a maximum outer diameter of jacket between the reduced-diameter segments. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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22. A method comprising forming a neuromodulation element, wherein forming the neuromodulation element comprises:
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forming a tubular jacket, an outer surface of the jacket defining reduced-diameter segments spaced apart along its longitudinal axis; positioning a band electrode in a reduced-diameter segment of the reduced diameter segments, the band electrode forming a closed loop extending circumferentially around the jacket, wherein a minimum inner diameter of the band electrode is smaller than a maximum outer diameter of jacket between the reduced-diameter segments; and positioning the jacket and a hypotube segment relative to one another so that the jacket is disposed around at least a portion of an outer surface of the hypotube segment, wherein the hypotube segment is configured to have a first shape in a delivery state of the neuromodulation element and a second shape in a deployed state of the neuromodulation element, the second shape being more helical than the first shape. - View Dependent Claims (23, 24, 25, 26, 27)
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Specification