System and method for removing an implanted object in a passageway in a patient

摘要

A system for removing an implanted stent or other object from a passageway in a patient includes a housing, an expansion element that operates between an enlarged mode in which the expansion element may radially expand to a diameter larger than the object diameter and a collapsed mode in which the expansion element radially contracts, and a plurality of radially contractible members configured to circumferentially engage the implanted object. A method for moving an implanted stent or other object from an initial location in a passageway includes positioning an expansion element proximate to the stent, expanding the expansion element thereby creating a tapered annular space between the stent and the passageway, advancing a plurality of members towards the tapered annular space, engaging the stent with the members, radially contracting the members to radially compress the stent, and moving the compressed stent from the initial location.

主权项

1. A method for moving an implanted stent having a stent lumen and a stent cross-sectional dimension from an initial location within a passageway in tissue in a patient, comprising:
positioning an expansion element to a location proximate to the stent in the passageway; expanding the expansion element at the location proximate to the stent to create a tapered annular space between the stent and the passageway; advancing a plurality of members towards the tapered annular space; engaging at least a portion of the stent with the plurality of members, such that the plurality of members are distributed about the stent; radially contracting the plurality of members, thereby at least partially radially compressing the stent; and moving the compressed stent from the initial location in the passageway.