Devices and methods for delivering energy to body lumens
First Claim
1. A medical device, comprising:
- a shaft having a proximal end and a distal end; and
a basket assembly disposed at or adjacent the distal end, the basket assembly being configured to transition between a collapsed state and an expanded state, wherein the basket assembly includes a plurality of expandable legs, and while in the collapsed state, a first expandable leg of the plurality of expandable legs includes a first region that is convex when viewed from a central longitudinal axis of the medical device, an active region disposed distally of the first region, and a second region disposed distally of the active region, the second region being convex when viewed from the central longitudinal axis.
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Abstract
A medical device is disclosed for delivering energy to a body lumen. The device includes an elongate member including a proximal portion and a distal portion adapted for insertion into a body lumen; and an energy delivery device disposed adjacent the distal portion of the elongate member, the energy delivery device including at least one elongate electrode arm, wherein the elongate electrode arm is configured to transition between a first configuration and a second configuration different than the first configuration. The at least one elongate electrode arm includes an active region configured to contact and deliver energy to the body lumen. When the elongate electrode arm is in the first configuration, at least a portion of the active region of the elongate electrode arm extends radially inward toward a longitudinal axis of the energy delivery device.
553 Citations
20 Claims
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1. A medical device, comprising:
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a shaft having a proximal end and a distal end; and a basket assembly disposed at or adjacent the distal end, the basket assembly being configured to transition between a collapsed state and an expanded state, wherein the basket assembly includes a plurality of expandable legs, and while in the collapsed state, a first expandable leg of the plurality of expandable legs includes a first region that is convex when viewed from a central longitudinal axis of the medical device, an active region disposed distally of the first region, and a second region disposed distally of the active region, the second region being convex when viewed from the central longitudinal axis. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A medical device, comprising:
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a shaft having a proximal end and a distal end; and a basket assembly disposed at or adjacent the distal end, the basket assembly being configured to transition between a collapsed state and an expanded state, wherein the basket assembly includes a plurality of expandable legs, a first expandable leg of the plurality of expandable legs including an active region that is flat when the basket assembly is in the collapsed state, and that is concave when viewed from a central longitudinal axis of the medical device when the basket assembly is in the expanded state. - View Dependent Claims (13, 14, 15)
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16. A medical device, comprising:
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a shaft having a proximal end and a distal end; and a basket assembly disposed at or adjacent the distal end, the basket assembly being configured to transition between a collapsed state and an expanded state, wherein the basket assembly includes a plurality of expandable legs, wherein a first expandable leg of the plurality of expandable legs includes a proximal region, a first region disposed distally of the proximal region, an active region disposed distally of the first region, a second region disposed distally of the active region, and a distal region disposed distally of the second region, wherein the first expandable leg is pre-shaped such that in the collapsed state and while the basket assembly is unconstrained by an outer sheath; the first region extends distally and radially outward from the proximal region; the first region is convex when viewed from a central longitudinal axis of the medical device; the active region is substantially parallel to the central longitudinal axis; the second region extends distally and radially inward from the active region toward the distal region; and the second region is convex when viewed from the central longitudinal axis. - View Dependent Claims (17, 18, 19, 20)
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Specification