WO2001001885B1 - Flexible, stretchable coiled-sheet stent - Google Patents

Flexible, stretchable coiled-sheet stent

Info

Publication number
WO2001001885B1
WO2001001885B1 PCT/US2000/017206 US0017206W WO0101885B1 WO 2001001885 B1 WO2001001885 B1 WO 2001001885B1 US 0017206 W US0017206 W US 0017206W WO 0101885 B1 WO0101885 B1 WO 0101885B1
Authority
WO
WIPO (PCT)
Prior art keywords
stent
tubular body
circumference
diagonal elements
condition
Prior art date
Application number
PCT/US2000/017206
Other languages
French (fr)
Other versions
WO2001001885A1 (en
Inventor
Yi Yang
Farhad Khosravi
Himanshu N Patel
Original Assignee
Endotex Interventional Sys Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Endotex Interventional Sys Inc filed Critical Endotex Interventional Sys Inc
Priority to DE60020562T priority Critical patent/DE60020562T2/en
Priority to AT00941643T priority patent/ATE296591T1/en
Priority to CA002373970A priority patent/CA2373970C/en
Priority to JP2001507389A priority patent/JP2003503150A/en
Priority to EP00941643A priority patent/EP1194079B1/en
Publication of WO2001001885A1 publication Critical patent/WO2001001885A1/en
Publication of WO2001001885B1 publication Critical patent/WO2001001885B1/en

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/82—Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/86—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure
    • A61F2/90—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure characterised by a net-like or mesh-like structure
    • A61F2/91—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure characterised by a net-like or mesh-like structure made from perforated sheet material or tubes, e.g. perforated by laser cuts or etched holes
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/82—Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/86—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure
    • A61F2/90—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure characterised by a net-like or mesh-like structure
    • A61F2/91—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure characterised by a net-like or mesh-like structure made from perforated sheet material or tubes, e.g. perforated by laser cuts or etched holes
    • A61F2/915—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure characterised by a net-like or mesh-like structure made from perforated sheet material or tubes, e.g. perforated by laser cuts or etched holes with bands having a meander structure, adjacent bands being connected to each other
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/82—Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/92—Stents in the form of a rolled-up sheet expanding after insertion into the vessel, e.g. with a spiral shape in cross-section
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/82—Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/86—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure
    • A61F2/90—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure characterised by a net-like or mesh-like structure
    • A61F2/91—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure characterised by a net-like or mesh-like structure made from perforated sheet material or tubes, e.g. perforated by laser cuts or etched holes
    • A61F2/915—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure characterised by a net-like or mesh-like structure made from perforated sheet material or tubes, e.g. perforated by laser cuts or etched holes with bands having a meander structure, adjacent bands being connected to each other
    • A61F2002/91533—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure characterised by a net-like or mesh-like structure made from perforated sheet material or tubes, e.g. perforated by laser cuts or etched holes with bands having a meander structure, adjacent bands being connected to each other characterised by the phase between adjacent bands
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/82—Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/86—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure
    • A61F2/90—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure characterised by a net-like or mesh-like structure
    • A61F2/91—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure characterised by a net-like or mesh-like structure made from perforated sheet material or tubes, e.g. perforated by laser cuts or etched holes
    • A61F2/915—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure characterised by a net-like or mesh-like structure made from perforated sheet material or tubes, e.g. perforated by laser cuts or etched holes with bands having a meander structure, adjacent bands being connected to each other
    • A61F2002/91533—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure characterised by a net-like or mesh-like structure made from perforated sheet material or tubes, e.g. perforated by laser cuts or etched holes with bands having a meander structure, adjacent bands being connected to each other characterised by the phase between adjacent bands
    • A61F2002/91541—Adjacent bands are arranged out of phase
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/82—Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/86—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure
    • A61F2/90—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure characterised by a net-like or mesh-like structure
    • A61F2/91—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure characterised by a net-like or mesh-like structure made from perforated sheet material or tubes, e.g. perforated by laser cuts or etched holes
    • A61F2/915—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure characterised by a net-like or mesh-like structure made from perforated sheet material or tubes, e.g. perforated by laser cuts or etched holes with bands having a meander structure, adjacent bands being connected to each other
    • A61F2002/9155—Adjacent bands being connected to each other
    • A61F2002/91558—Adjacent bands being connected to each other connected peak to peak
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2220/00—Fixations or connections for prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2220/0008—Fixation appliances for connecting prostheses to the body
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2220/00—Fixations or connections for prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2220/0008—Fixation appliances for connecting prostheses to the body
    • A61F2220/0016—Fixation appliances for connecting prostheses to the body with sharp anchoring protrusions, e.g. barbs, pins, spikes

Abstract

A coiled-sheet stent includes a tubular body having a longitudinal axis and a circumference, and a plurality of cylindrical bands formed in the tubular body, each band having a zig-zag pattern including a series of sequential diagonal elements connected to one another and extending about the circumference. A plurality of longitudinal connectors extend between and connect adjacent bands. The diagonal elements have an arcuate shape, all diagonal elements in each band being oriented in either a clockwise or counter-clockwise direction about the circumference. The tubular body is expandable between contracted and enlarged conditions, and the zig-zag pattern is expandable between unstretched and unstretched conditions, the zig-zag pattern being biased towards the stretched condition above a transition temperature, thereby at least partially defining the enlarged condition. A multi-cellular stent structure is also provided that includes a plurality of bat shaped cells formed in a tubular body, each cell defining a head region, a tail region and opposing curved wing regions, and a plurality of connectors extending between and connecting adjacent cells. The head and tail regions of adjacent cells are directly connected to one another, and connectors extend between adjacent wing regions of adjacent cells.

Claims

1/01885 - 17 - AMENDED CLAIMS [received by the International Bureau on 19 December 2000 (19.12.00); original claims 1-25 replaced by amended claims 1-23 (4 pages)]
1. A stent, comprising: ai generally tubular body having a longitudinal axis and a circumference, and having aisize adapted for introduction into a body lumen; a plurality of cylindrical bands formed in the tubular body, each band comprising a generally zig-zag pattern comprising a series of sequential diagonal elements connected to one another and extending about the circumference, the diagonal elements having a generally arcuate shape, all diagonal elements in each band being oriented in either a clockwise or counter-clockwise direction about the circumference; and a plurality of longitudinal connectors extending between and connecting adjacent bands, each longitudinal connector extending substantially parallel to the longitudinal axis.
2. The stent of claim 1, wherein the tubular body comprises a coiled-shect.
3. The stent of claim 1 , wherein the tubular body is expandable between a contracted condition for facilitating introduction into a body lumen and an enlarged condition for engaging a wall of a body lumen.
4. The stent of claim 3, wherein the tubular body is biased towards the enlarged condition.
5. The stent of claim 3, wherein the zig-zag pattern is expandable between an unstretched condition and a stretched condition, the zig-zag pattern being biased towards the stretched condition above a transition temperature which is substantially below body temperature, thereby at least partially defining the enlarged condition.
6. The stent of claim 5, wherein ends of adjacent diagonal elements are arranged further away from one another about the circumference in the stretched condition than in the mnstretched condition.
7. The stent of claim 1, wherein all of the diagonal elements in all of the bands comprising; the tubular body are oriented in a clockwise direction about the circumference.
Figure imgf000003_0001
8: The stent of claim 1, wherein the longitudinal connectors have a longitudinal dimension that is substantially smaller than a longitudmal dimension of the diagonal elements.
9. The stent of claim 1, wherein each diagonal element comprises first and second generally straight portions having first and second ends, the second ends being connected together by a curved portion, the first ends being connected to preceding and succeeding diagonal elements.
10. The stent of claim 1 , wherein the diagonal elements of each cylindrical band are out of phase with any adjacent cylindrical band.
11; A stent, comprising: a generally tubular body having a longitudinal axis and a circumference, and having a size adapted for introduction into a body lumen; a plurahty of generally bat shaped cells formed in the tubular body, each cell defining aihead region, a tail region and opposing curved wing regions, the head region of each cell being connected to the tail region of an adjacent cell; and a plurality of connectors extending between and connecting adj cent cells, each connector extending substantially parallel to the longitudinal axis.
12.' The stent of claim 11, wherein the head and tail regions are aligned about the circumference, and the wing regions have a generally "V" shape extending longitudinally away from tlie head and tail regions.
13. The stent of claim 12, wherein the cells are arranged sequentially about the circumference, thereby defining a cylindrical band.
1 . The stent of claim 13, wherein the tubular body comprises a plurality of cylindrical bands, each cylindrical band comprising a sequence of bat shaped cells, 1/01885 _ 19 _
adjacent icyl drical bands being connected to one another by connectors extending substantially parallel to the longitudinal axis.
15. The stent of claim 11, wherein the wing regions are defined by first and second atcuate members, the first and second arcuate members comprising a pair of generally straight portions connected to one another by a curved portion.
16. The stent of claim 15, wherein the curved portion defines an apex of the "V" shaped curved wing regions, the apices all pointing substantially in a single direction.
17. The stent of claim 15, wherein each head region is defined by a longitudinal connector extending between the first arcuate members of the opposing wing regions of the respective cell, and the tail region is defined by a longitudinal connector extending between the second arcuate members of the opposing wing regions of the respective cell.
18. The stent of claim 17, wherein one of the generally straight portions of each of the first and second arcuate members is substantially shorter than the other generally straight portion of the respective arcuate member.
19- The stent of claim 17, wherein the longitudinal connector defining the tail region also defines the head region of an adjacent cell.
20. The stent of claim 11, wherein the plurality of connectors comprise a longitudinal connector extending between a wing region of a first cell and a wing region of an adjacent cell.
21. The stent of claim 11 , wherein the tubular body comprises a coiled-sheet.
22. The stent of claim 11, wherein the tubular body is expandable between a contracted condition for facilitating introduction into a body lumen and an enlarged condition for engaging a wall of a body lumen.
23. The stent of claim 22, wherein the tubular body is biased towards the enlarged! condition.
PCT/US2000/017206 1999-07-02 2000-06-22 Flexible, stretchable coiled-sheet stent WO2001001885A1 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
DE60020562T DE60020562T2 (en) 1999-07-02 2000-06-22 BENDY, EXPERIENCED DEVELOPED STENT
AT00941643T ATE296591T1 (en) 1999-07-02 2000-06-22 PENDABLE, STRETCHABLE WRAPPED STENT
CA002373970A CA2373970C (en) 1999-07-02 2000-06-22 Flexible, stretchable coiled-sheet stent
JP2001507389A JP2003503150A (en) 1999-07-02 2000-06-22 Flexible and stretchable wound stent
EP00941643A EP1194079B1 (en) 1999-07-02 2000-06-22 Flexible, stretchable coiled-sheet stent

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US34784599A 1999-07-02 1999-07-02
US09/347,845 1999-07-02

Publications (2)

Publication Number Publication Date
WO2001001885A1 WO2001001885A1 (en) 2001-01-11
WO2001001885B1 true WO2001001885B1 (en) 2001-03-08

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2000/017206 WO2001001885A1 (en) 1999-07-02 2000-06-22 Flexible, stretchable coiled-sheet stent

Country Status (8)

Country Link
US (1) US7731745B2 (en)
EP (2) EP1554993B1 (en)
JP (1) JP2003503150A (en)
AT (1) ATE296591T1 (en)
CA (1) CA2373970C (en)
DE (1) DE60020562T2 (en)
ES (1) ES2243274T3 (en)
WO (1) WO2001001885A1 (en)

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EP1554993A3 (en) 2008-07-02
CA2373970C (en) 2008-12-30
EP1554993B1 (en) 2012-08-01
EP1554993A2 (en) 2005-07-20
JP2003503150A (en) 2003-01-28
EP1194079A1 (en) 2002-04-10
WO2001001885A1 (en) 2001-01-11
CA2373970A1 (en) 2001-01-11
US7731745B2 (en) 2010-06-08
EP1194079B1 (en) 2005-06-01
ES2243274T3 (en) 2005-12-01
ATE296591T1 (en) 2005-06-15
US20050049687A1 (en) 2005-03-03
DE60020562D1 (en) 2005-07-07
DE60020562T2 (en) 2006-05-11

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