Helical push wire electrode
First Claim
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1. A method, comprising:
- advancing a shaft along a transluminal path to deliver a therapeutic assembly at a distal portion of the shaft to a treatment site within a vessel of a human patient, the therapeutic assembly including a wire electrode slidably disposed within the shaft, the electrode having a helical portion extending distally from the shaft to an electrode distal end supported at a fixed distance from a shaft distal end;
pushing the electrode distally to expand the helical portion;
modulating one or more nerves of the patient using the therapeutic assembly after pushing the electrode distally; and
pulling the electrode proximally to collapse the helical portion.
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Abstract
Helical push wire electrodes are provided. The electrodes may create a continuous helical lesion. One or more electrodes may wind around a support section and create a set of helixes having fixed ends and hitches. Pushing or pulling an end of the electrode transforms the electrodes between a delivery configuration and a deployed configuration such that the set of helixes expand or contract axially. Different portions of the electrodes may be surrounded by sleeves. The sleeves may regulate how the wires transform and provide insulation. Various insulation configurations of the electrodes may provide creations of discrete lesions, efficient energy delivery and reduced power consumption.
471 Citations
13 Claims
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1. A method, comprising:
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advancing a shaft along a transluminal path to deliver a therapeutic assembly at a distal portion of the shaft to a treatment site within a vessel of a human patient, the therapeutic assembly including a wire electrode slidably disposed within the shaft, the electrode having a helical portion extending distally from the shaft to an electrode distal end supported at a fixed distance from a shaft distal end; pushing the electrode distally to expand the helical portion; modulating one or more nerves of the patient using the therapeutic assembly after pushing the electrode distally; and pulling the electrode proximally to collapse the helical portion. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method for neuromodulation of a patient, comprising:
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advancing an elongate shaft along a transluminal path to deliver a therapeutic assembly at a distal portion of the shaft to a treatment site within a vessel of the patient, the therapeutic assembly including a pair of wire electrodes slidably disposed within the shaft, the electrodes having intertwined helical portions extending distally from the shaft to a distal tip supported at a fixed distance from a shaft distal end; pushing the pair of electrodes distally to radially expand the intertwined helical portions; modulating one or more nerves of the patient using the therapeutic assembly after pushing the pair of electrodes distally; and pulling the pair of electrodes proximally to collapse the intertwined helical portions. - View Dependent Claims (9, 10, 11, 12, 13)
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Specification