Endoprosthesis stent delivery system and method of using the same
First Claim
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1. A stent delivery device comprising:
- a segmented sheath capable of overlying a radially expandable endoprosthesis stent with said stent being in a compressed condition;
said segmented sheath capable of restraining said stent from radial expansion; and
said segmented sheath comprising a plurality of adjacent flaps that in combination are capable of completely encircling said compressed stent, each of said flaps being axially slidable with respect to all other said flapswherein a first of said flaps has a projection running along at least part of its length, and said projection is adapted to engage a corresponding structure on an adjacent second one of said flaps to form a slidable coupling configured to permit said first and second flaps to slide axially with respect to one another while restraining at least a portion of the stent from expanding radially; and
wherein each of said first and second flaps has a longitudinal edge adjacent to the longitudinal edge of the other of said first and second flaps, and wherein said adjacent longitudinal edges are connected by said slidable coupling.
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Abstract
An endoprosthesis deployment system includes an axial catheter, an outer sheath extending parallel to the axial catheter, and an inner sheath positioned transversely between the axial catheter and outer sheath, the inner sheath including first and second inner sheath sections extending along the axial catheter, each of said first and said second inner sheath sections mounted for axial movement relative to the other inner sheath section.
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Citations
15 Claims
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1. A stent delivery device comprising:
- a segmented sheath capable of overlying a radially expandable endoprosthesis stent with said stent being in a compressed condition;
said segmented sheath capable of restraining said stent from radial expansion; and
said segmented sheath comprising a plurality of adjacent flaps that in combination are capable of completely encircling said compressed stent, each of said flaps being axially slidable with respect to all other said flapswherein a first of said flaps has a projection running along at least part of its length, and said projection is adapted to engage a corresponding structure on an adjacent second one of said flaps to form a slidable coupling configured to permit said first and second flaps to slide axially with respect to one another while restraining at least a portion of the stent from expanding radially; and wherein each of said first and second flaps has a longitudinal edge adjacent to the longitudinal edge of the other of said first and second flaps, and wherein said adjacent longitudinal edges are connected by said slidable coupling. - View Dependent Claims (2, 3, 4, 5, 6, 7)
- a segmented sheath capable of overlying a radially expandable endoprosthesis stent with said stent being in a compressed condition;
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8. A method of deploying an endoprosthesis stent, said method comprising:
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providing a radially expandable endoprosthesis stent; restraining said stent in a compressed condition by completely encircling said stent with a segmented sheath that comprises a plurality of flaps, each of said flaps being axially slidable with respect to all other said flaps; providing a projection running along at least part of the length of said first of said flaps, said projection being adapted to engage a corresponding structure on an adjacent second one of said flaps to form a slidable coupling that is configured to permit said first and second flaps to slide axially with respect to one another while restraining at least a portion of the stent from expanding radially, wherein each of said first and second flaps has a longitudinal edge adjacent to the longitudinal edge of the other of said first and second flaps, and including providing said slidable coupling between said adjacent longitudinal edges; placing said sheath within a hollow organ with said stent radially compressed by said flaps; and
,axially withdrawing a first of said flaps from overlying engagement with said compressed stent to a sufficient extent that at least a portion of said compressed stent radially decompresses in the region vacated by said withdrawn first flap. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15)
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Specification