Self-positioning electrode system and method for renal nerve modulation
First Claim
Patent Images
1. A system for nerve modulation, comprising:
- an elongate shaft having a proximal end, a distal end, and a lumen extending therebetween;
an expandable frame positioned adjacent the distal end of the elongate shaft, the expandable frame configured to shift between an expanded configuration and a collapsed configuration, the expandable frame comprising;
a proximal end and a distal end and a plurality of ribbons extending therebetween, at least one of the ribbons having an electrode positioned at a location radially inwards relative to the greatest radial extent of the expandable frame; and
an expansion mechanism comprising;
a biasing element positioned adjacent to the proximal end of the expandable frame;
a piston movably disposed within the lumen of the elongate shaft, the piston positioned proximal to the distal end of the elongate shaft;
a central shaft having a distal end attached to the distal end of the expandable frame and a proximal end attached to the piston; and
a control element extending proximally from a proximal end of the piston;
wherein the biasing element is disposed between the distal end of the elongate shaft and the piston.
1 Assignment
0 Petitions
Accused Products
Abstract
Systems for nerve and tissue modulation are disclosed. An example system may include an intravascular nerve modulation system including an elongated shaft having a proximal end region and a distal end region. The system may include an expandable frame having one or more electrodes positioned on or about the frame. An actuation assembly including a biasing element, a central shaft, and a piston may be configured to provide for controlled expansion of the expandable frame. The system may further include a control element for controlling the actuation assembly.
1478 Citations
18 Claims
-
1. A system for nerve modulation, comprising:
-
an elongate shaft having a proximal end, a distal end, and a lumen extending therebetween; an expandable frame positioned adjacent the distal end of the elongate shaft, the expandable frame configured to shift between an expanded configuration and a collapsed configuration, the expandable frame comprising; a proximal end and a distal end and a plurality of ribbons extending therebetween, at least one of the ribbons having an electrode positioned at a location radially inwards relative to the greatest radial extent of the expandable frame; and an expansion mechanism comprising; a biasing element positioned adjacent to the proximal end of the expandable frame; a piston movably disposed within the lumen of the elongate shaft, the piston positioned proximal to the distal end of the elongate shaft; a central shaft having a distal end attached to the distal end of the expandable frame and a proximal end attached to the piston; and a control element extending proximally from a proximal end of the piston; wherein the biasing element is disposed between the distal end of the elongate shaft and the piston. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
-
-
10. A medical device assembly for nerve modulation, the assembly comprising:
-
an elongate shaft having a proximal end, a distal end, and a lumen extending therebetween; an expandable frame configured to shift between an expanded configuration and a collapsed configuration, the expandable frame having a proximal end and a distal end and one or more ribbons attached therebetween; a biasing element disposed adjacent to the proximal end of the expandable frame; a piston movably disposed within the lumen of the elongate shaft and positioned adjacent to a proximal end of the biasing element; and a control element extending proximally from a proximal end of the piston; wherein the biasing element is disposed between the distal end of the elongate shaft and the piston. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17)
-
-
18. A method for modulating renal nerves, the method comprising:
-
advancing a system for nerve modulation within a renal blood vessel, the system for nerve modulation comprising; an elongate shaft having a proximal end, a distal end, and a lumen disposed therebetween; an expandable frame configured to shift between an expanded configuration and a collapsed configuration, the expandable frame having a proximal end and a distal end and a plurality of ribbons extending therebetween, at least one of the ribbons having an electrode positioned at a location radially inwards relative to the greatest radial extent of the expandable frame; and an expansion mechanism comprising; a biasing element positioned proximal to the proximal end of the expandable frame; a piston movably disposed adjacent to a proximal end of the biasing element, wherein movement of the piston controls a length of the biasing element; a central shaft having a distal end attached to the distal end of the expandable frame and a proximal end attached to the piston; and a control element extending proximally from a proximal end of the piston; wherein the expansion mechanism shifts the expandable frame between the expanded and the collapsed configuration; and wherein the biasing element is disposed between the distal end of the elongate shaft and the piston; maneuvering the elongate shaft to a desired location within the renal blood vessel; expanding the expandable frame; and ablating renal nerves perivascularly.
-
Specification