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US 2020/0046528 A1Published application
Stent retrieval system
AssigneeBoston Scientific Scimed, Inc.
InventorsMARTYN G. FOLAN, THOMAS M. KEATING, GERASIMOS RIGALOS
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Abstract
A braided stent having a plurality of retrieval and/or repositioning levers includes a stent body formed of a plurality of wires interbraided in a braided pattern. The repositioning and/or retrieval levers have a loop portion extending radially away from the stent body and first and second legs extending along the stent body. The levers are configured to be actuated radially inward toward the central longitudinal axis of the stent by a radially inwardly directed force to radially collapse the stent.
Claims20
A stent comprising:
- a tubular body formed of a plurality of interwoven wires, the tubular body having a lumen extending therethrough from a first open end of the tubular body to a second open end of the tubular body, the tubular body having a length measured from the first open end to the second open end and a longitudinal axis extending therebetween;
- and
- a plurality of repositioning and/or retrieval levers formed as separate elements from the plurality of interwoven wires, the plurality of repositioning and/or retrieval levers attached to the tubular body at a plurality of discrete points spaced apart circumferentially around the first open end, the plurality of repositioning and/or retrieval levers including a loop portion extending longitudinally beyond and radially outward from the first open end of the tubular body, each repositioning and/or retrieval lever having first and second legs extending from the loop portion and along a portion of the tubular body toward the second open end, wherein the repositioning and/or retrieval levers are configured to translate a radially inward squeezing force applied to the repositioning and/or retrieval levers at a location longitudinally beyond the first open end to a radially inward contracting force along the first and second legs extending along the tubular body.
A stent comprising:
- a tubular body formed of a plurality of interwoven wires, the tubular body having a first open end, a second open end, a length measured from the first open end to the second open end, and a longitudinal axis extending therebetween;
- and
- a plurality of repositioning and/or retrieval levers attached to the tubular body at a plurality of discrete points, each of the plurality of repositioning and/or retrieval levers formed from a single continuous wire attached to the tubular body, each repositioning and/or retrieval lever including a loop portion extending radially away from the longitudinal axis of the tubular body, each repositioning and/or retrieval lever having first and second legs extending from the loop portion and along a portion of the tubular body toward the second open end, wherein the repositioning and/or retrieval levers are configured to translate a radially inward squeezing force applied to the repositioning and/or retrieval levers at a location longitudinally beyond the first open end to a radially inward contracting force along the first and second legs extending along the tubular body.
A stent comprising:
- a tubular body formed of a plurality of interwoven wires defining a woven or braided pattern, the tubular body having a first open end, a second open end, and a longitudinal axis extending therebetween, each of the plurality of interwoven wires having terminal ends at the first open end and an intermediate portion forming closed loops at the second open end, wherein the terminal ends of each wire are joined to one another or to terminal ends of an adjacent wire at a weld;
- and
- a plurality of repositioning and/or retrieval levers attached to the tubular body at a plurality of discrete points adjacent one of the first and second open ends, each of the plurality of repositioning and/or retrieval levers having a loop portion extending radially away from the longitudinal axis of the tubular body, and first and second legs extending from the loop portion and following the woven or braided pattern along a portion of the tubular body toward the opposite open end, wherein the repositioning and/or retrieval levers are configured to translate a radially inward squeezing force applied to the loop portions of the repositioning and/or retrieval levers to a radially inward contracting force along the first and second legs extending along the tubular body.
Dependencies are inferred from the claim text.