Expandable coiled endoluminal prosthesis
First Claim
1. A releasable and implantable coiled endoluminal prosthesis comprising:
- an elongate, self-expanding coiled stent body extending generally helically about a longitudinal axis and having a main body portion and first and second end portions;
a graft material with a hollow graft material interior which encases at least the main body portion to create a releasable and implantable coiled stent graft;
said coiled stent graft movable between a reduced diameter state and a relaxed, expanded diameter state;
said coiled stent graft having an interior and an exterior, in which adjacent turns thereof define a generally helical gap, extending from the exterior and opening into the interior, therebetween when in the expanded diameter state; and
the main body portion comprising a coiled ribbon of material with its width being much greater than its thickness.
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0 Petitions
Accused Products
Abstract
A coiled stent (196) has a coiled stent body with a main body portion (106) and end portions (108). The end portions may be substantially less stiff than the body portion to help prevent tissue trauma. A graft material (124) may be used to cover at least the main body portion to create a coiled stent graft (122) in which adjacent turns (128) have gaps defined therebetween to create a generally helical gap (130). The coiled stent may have side elements (10) separated by connector elements (112) and be placeable in a contracted, reduced diameter state and in a relaxed, expanded diameter state. The connector elements are preferably generally parallel to the stent axis when placed in the contracted, reduced-diameter state, typically tightly wrapped around a placement catheter (136).
141 Citations
19 Claims
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1. A releasable and implantable coiled endoluminal prosthesis comprising:
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an elongate, self-expanding coiled stent body extending generally helically about a longitudinal axis and having a main body portion and first and second end portions;
a graft material with a hollow graft material interior which encases at least the main body portion to create a releasable and implantable coiled stent graft;
said coiled stent graft movable between a reduced diameter state and a relaxed, expanded diameter state;
said coiled stent graft having an interior and an exterior, in which adjacent turns thereof define a generally helical gap, extending from the exterior and opening into the interior, therebetween when in the expanded diameter state; and
the main body portion comprising a coiled ribbon of material with its width being much greater than its thickness. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A releasable and implantable coiled endoluminal prosthesis comprising:
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an elongate, self-expanding coiled stent body extending generally helically about a longitudinal axis and having a main body portion and first and second end portions, said end portions being substantially less stiff than the main body portion;
the main body portion comprising a coiled ribbon of material with its width much greater than its thickness;
the end portions having an inwardly-tapering portion with a blunt tip, a longitudinally-extending length and a laterally-extending width, said length greater than said width;
a graft material with a hollow graft material interior which encases at least part of the main body portion to create a releasable and implantable coiled stent graft;
said coiled stent graft movable between a reduced diameter state and a relaxed, expanded diameter state; and
said coiled stent graft having an interior and an exterior, in which adjacent turns thereof define a generally helical gap, extending from the exterior and opening into the interior, therebetween when in the expanded diameter state. - View Dependent Claims (10)
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11. An endoluminal prosthesis comprising:
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a coiled body having first and second ends and a main portion between the first and second ends;
the main portion having an average cross-sectional dimension of x;
at least one of the first and second ends has a maximum cross-sectional dimension of about 5x to 25x and a blunt tip to help avoid trauma to the patient'"'"'s tissue; and
the main portion having a circular cross-sectional shape and the ends having flattened, generally oval shapes. - View Dependent Claims (12)
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13. A catheter-releasable and implantable coiled endoluminal prosthesis comprising:
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an elongate, self-expanding coiled stent body extending generally helically about a longitudinal axis and having a main body portion and first and second end portions;
a tubular graft material comprising layers of graft material defining a hollow graft material interior which encases the entire stent body to create a catheter-releasable and implantable coiled stent graft;
the tubular graft material having ends, said ends being secured together so to secure the tubular graft material in place;
said coiled stent graft comprising ends and being coiled from end to end, said ends being free ends;
said coiled stent graft movable between a reduced diameter state and a relaxed, expanded diameter state;
said coiled stent graft having an interior and an exterior, in which adjacent turns thereof define a generally helical gap, extending from the exterior and opening into the interior, therebetween when in the expanded diameter state; and
the main body portion comprising a coiled ribbon of material with its width being much greater than it thickness. - View Dependent Claims (14, 15)
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16. A catheter-releasable and implantable coiled endoluminal prosthesis comprising:
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an elongate, self-expanding coiled stent body extending generally helically about a longitudinal axis and having a main body portion and first and second end portions;
the main body portion comprising first and second generally helically extending edge elements connected together in generally parallel spaced apart relationship relative to each other by connector elements;
said edge elements of said end portions being inwardly-tapering and defining blunt tips and said end portions being substantially less stiff than the main body portion so to help prevent tissue trauma during use;
the main body portion comprising a coiled ribbon of material with its width much greater than its thickness;
a graft material comprising layers of graft material defining a hollow graft material interior which encases at least part of the main body portion to create a catheter-releasable and implantable coiled stent graft;
said coiled stent graft comprising ends and being coiled from end to end, said ends being free ends;
said coiled stent graft movable between a reduced diameter state and a relaxed, expanded diameter state; and
said coiled stent graft having an interior and an exterior, in which adjacent turns thereof define a generally helical gap, extending from the exterior and opening into the interior, therebetween when in the expanded diameter state. - View Dependent Claims (17, 18, 19)
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Specification