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US 2015/0305807 A1Published application
Neuromodulation Catheters Having Braided Shafts and Associated Systems and Methods
AssigneeMedtronic Ardian Luxembourg S.a.r.l.
InventorsBrian Kelly, Micheal Moriarty
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Abstract
Methods for treating a patient using therapeutic renal neuromodulation and associated devices, systems, and methods are disclosed herein. One aspect of the present technology, for example, is directed to a catheter apparatus including an elongated shaft defined by a braid embedded within a polymer. The braid can include one or more thermocouple assemblies intertwined with a braiding element. The thermocouple assemblies can be coupled to one or more electrodes at a distal portion of the shaft.
Claims22
A catheter apparatus, comprising:
- an elongated tubular shaft having a proximal portion and a distal portion, wherein the elongated tubular shaft includes—
- a polymer material;
- a first thermocouple assembly wrapped about and/or embedded within the polymer material of the shaft, wherein the first thermocouple assembly comprises a first pair of wires composed of dissimilar metals;
- a second thermocouple assembly wrapped about and/or embedded within the polymer material of the shaft, wherein the second thermocouple assembly comprises a second pair of wires composed of dissimilar metals, and wherein the second pair of wires is physically and electrically isolated from the first pair of wires along the elongated shaft between the proximal portion and the distal portion;
- a first electrode at the distal portion of the elongated shaft and electrically coupled to the first thermocouple assembly;
- a second electrode at the distal portion of the elongated shaft and electrically coupled to the second thermocouple assembly,
- wherein the distal portion of the shaft and the first and second electrodes together define a therapeutic assembly adapted to be located at a target location within a blood vessel of a human patient,
- wherein the elongated shaft and the therapeutic assembly together define therethrough a guide wire lumen configured to slidably receive a medical guide wire,
- wherein axial movement of the guide wire relative to the therapeutic assembly transforms the therapeutic assembly between (a) a low-profile delivery configuration and (b) a deployed configuration having a spiral shape.
6 more elements
A neuromodulation catheter, comprising:
- an elongate polymer shaft comprising multiple thermocouple wires arranged thereabout;
- and
- a plurality of neuromodulation elements operably coupled to the polymer shaft at a distal portion of the polymer shaft, wherein individual neuromodulation elements are electrically coupled to corresponding pairs of thermocouple wires,
- wherein—
- each thermocouple wire is distributed along a helical path extending around a longitudinal axis of the polymer shaft, and wherein the thermocouple wires extending along the polymer shaft are arranged generally parallel with each other, and
- at least a portion of the polymer shaft comprises a lumen therethrough sized and shaped to slidably receive a medical guide wire.
3 more elements
A method of manufacturing a medical device, the method comprising:
- positioning a first thermocouple assembly and a second thermocouple assembly about a central mandrel, wherein the first thermocouple assembly comprises a first pair of wires and the second thermocouple assembly comprises a second pair of wires;
- braiding the first wires of the first thermocouple assembly and the second wires of the second thermocouple assembly along the mandrel, wherein the first wires and the second wires are spaced apart from each other and arranged in a spiral pattern along the mandrel;
- disposing a polymer material over the braided first wires and second wires to form an elongated tubular shaft about the mandrel;
- selectively removing portions of the polymer material at a distal region of the elongated shaft to access the first wires of the first thermocouple assembly and the second wires of the second thermocouple assembly;
- electrically coupling a first electrode to the exposed portion of the first wires of the first thermocouple assembly;
- electrically coupling a second electrode to the exposed portion of the second wires of the second thermocouple assembly;
- and
- removing the mandrel from at least the distal region of the elongated shaft.
5 more elements
Dependencies are inferred from the claim text.