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US 2017/0290691 A1Published application
Stent deployment system including multiple stent-engaging elements
AssigneeIDev Technologies, Inc.
InventorNianjiong Joan Bei
Life of this patent
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Abstract
A stent delivery system can include a plurality of stent-engaging elements configured to move relative to each other. Each of the stent-engaging elements can include a radially outwardly projecting portion configured to engage a stent. Each of the stent-engaging elements can be configured to move the stent when distally advanced and not move the stent when proximally retracted.
Claims20
A method of delivering a self-expanding stent at a treatment site using a stent delivery system, the method comprising:
- advancing the stent delivery system proximate to the treatment site, the stent delivery system comprising:
- an elongate outer member defining an outer member lumen;
- a pusher assembly in the outer member lumen, the pusher assembly comprising a plurality of stent-engaging elements, the plurality of stent-engaging elements comprising a distal stent-engaging element, at least one intermediate stent-engaging element, and a proximal stent-engaging element, the plurality of stent-engaging elements being positioned coaxially relative to each other, each of the plurality of stent-engaging elements being configured to move independently relative to the other stent-engaging elements;
- and
- the self-expanding stent radially between the elongate outer member and the pusher assembly in a radially compressed configuration;
- advancing the plurality of stent-engaging elements until the plurality of stent engaging elements are positioned at a distal portion of the outer lumen, wherein advancing the plurality of stent-engaging elements comprises:
- distally driving each of the at least one intermediate stent-engaging elements and the proximal stent-engaging element, while not distally driving any of the plurality of stent-engaging elements distal to the stent-engaging element being driven.
4 more elements
A stent delivery system comprising:
- an elongate outer member defining an outer member lumen;
- a pusher assembly in the outer member lumen, the pusher assembly comprising:
- a distal stent-engaging element comprising a first radially outwardly projecting portion configured to engage a first portion of a self-expanding stent;
- and
- a proximal stent-engaging element comprising a second radially outwardly projecting portion configured to engage a second portion of the self-expanding stent, the second portion being proximal to the first portion of the stent-engaging element,
- wherein the distal stent-engaging element is configured to move independently from the proximal stent-engaging element.
3 more elements
A method of delivering a self-expanding stent at a treatment site using a stent delivery system, the method comprising:
- advancing the stent delivery system proximate to the treatment site, the stent delivery system comprising:
- an elongate outer member defining an outer member lumen;
- a pusher assembly in the outer member lumen, the pusher assembly comprising:
- a first stent-engaging element;
- and
- a second stent-engaging element, a distal end of the first stent-engaging element positioned distal to the second stent-engaging element, the first stent-engaging element configured to move independently from the second stent-engaging element;
- and
- the self-expanding stent radially between the elongate outer member and the pusher assembly in a radially compressed configuration;
- advancing a first portion of the self-expanding stent out of the elongate outer member by distally driving the first stent-engaging element out of the elongate outer member;
- and
- after advancing the first portion of the self-expanding stent, advancing a second portion of the self-expanding stent out of the elongate outer member by distally driving the second stent-engaging element out of the elongate outer member, while not distally driving the first stent-engaging element.
8 more elements
Dependencies are inferred from the claim text.