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Devices and methods for delivering energy to body lumens

  • US 9,283,374 B2
  • Filed: 11/05/2013
  • Issued: 03/15/2016
  • Est. Priority Date: 11/05/2012
  • Status: Active Grant
First Claim
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1. A medical device for delivering energy to a body lumen, the device comprising:

  • an elongate member having a proximal end, a distal end, and a lumen extending therebetween; and

    a basket assembly disposed at or adjacent the distal end and 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 first region disposed at or adjacent a proximal portion of the first expandable leg, a second region disposed distally of the first region, an active region disposed distally of the second region, a third region disposed distally of the active region, and a fourth region disposed distally of the third 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 second region extends distally and radially outward from the first region,the active region extends distally from (i) the second region in a radially inward curve toward a longitudinal axis of the medical device and toward a radially innermost point, and (ii) the radially innermost point in a radially outward curve toward the third region, andthe third region extends distally from the active region and radially inward toward the fourth region;

    wherein the active region is configured to contact and deliver energy to the body lumen when the basket assembly is in the expanded state, andwhen the basket assembly is in the expanded state, distal ends of the plurality of expandable legs converge toward one another.

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