CA2272667A1 - Permanent expandable intraluminal tubular stent - Google Patents

Permanent expandable intraluminal tubular stent Download PDF

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Publication number
CA2272667A1
CA2272667A1 CA 2272667 CA2272667A CA2272667A1 CA 2272667 A1 CA2272667 A1 CA 2272667A1 CA 2272667 CA2272667 CA 2272667 CA 2272667 A CA2272667 A CA 2272667A CA 2272667 A1 CA2272667 A1 CA 2272667A1
Authority
CA
Canada
Prior art keywords
stent
members
connecting members
elongatable
adjacent
Prior art date
Legal status (The legal status 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 status listed.)
Abandoned
Application number
CA 2272667
Other languages
French (fr)
Inventor
Khalid Al-Saadon
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
AL SAADON KHALID
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to CA 2272667 priority Critical patent/CA2272667A1/en
Publication of CA2272667A1 publication Critical patent/CA2272667A1/en
Abandoned legal-status Critical Current

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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
    • A61F2/86—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
    • A61F2002/91516—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 the meander having a change in frequency along the band
    • 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
    • A61F2002/91525—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 within the whole structure different bands showing different meander characteristics, e.g. frequency or amplitude
    • 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
    • A61F2002/9155—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
    • 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
    • A61F2002/91566—Adjacent bands being connected to each other connected trough to trough
    • 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
    • A61F2230/00—Geometry of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2230/0002—Two-dimensional shapes, e.g. cross-sections
    • A61F2230/0004—Rounded shapes, e.g. with rounded corners
    • A61F2230/0013—Horseshoe-shaped, e.g. crescent-shaped, C-shaped, U-shaped

Abstract

A permanent expandable intraluminal tubular stent supporting device intended to maintain the walls of anatomical body channels or vessels, the stent being expandable within the vessel by an angioplasty balloon associated with a catheter thereby dilating and expanding the lumen of a vessel. The stent comprises an arrangement of connecting members interconnected by a plurality of radially expandable, elongatable members. Upon inflation of the balloon, the stent expands in both radial and longitudinal directions in relation to the amount of radially-outwardly directed force by the balloon.

Claims (16)

1. A permanent, expandable tubular stent comprising:
a uniform arrangement of connecting members in a cylindrical configuration of an initial length and of an initial diameter about a longitudinal axis, each connecting member having a proximal end and a distal end and being oriented with said proximal end nearer a first end of said stent than said distal end which is nearer an opposite, second end of said stent, the arrangement of connecting members comprising:
at least three sets each of an equal plurality of circumferentially-spaced connecting members, each said set being coaxially-arranged along a longitudinal axis and being axially displaced a predetermined distance from each adjacent set, the connecting members of each successive set being radially-interspaced with respect to the connecting members of the preceding set with said predetermined distance being such that the proximal ends of the connecting members of each successive set overlap the distal ends of the connecting members of the preceding set;
a plurality of first elongatable members each disposed between the proximal ends of each pair of circumferentially-adjacent connecting members of the first set;
a plurality of second elongatable members each disposed between the distal ends of each pair of circumferentially-adjacent members of the last set;
a plurality of third elongatable members each disposed between the distal ends of the connecting members of each set and the proximal end of each circumferentially-adjacent connecting member of each successive set;

said first, second and third elongatable members being sufficiently plastically deformable such that internal application of a generally uniformly-distributed, radially outwardly directed force causes said first and second elongatable members to radially expand and said third elongatable members to deform and elongate uniformly in a radially diagonal direction, thereby causing the connecting members of each set to move radially outwardly while the connecting members of adjacent sets move axially away from one another, thus, increasing the length of the stent from said initial length and the diameter of the stent from said initial diameter in relation to the amount of said radially outwardly directed force, said stent being flexible about said longitudinitial axis and said initial diameter being such as to permit intraluminal delivery of said stent into a body passageway.
2. The stent of claim 1, wherein each said first, second and third elongatable member consists of a plurality of intermediate sections joined at right angles.
3. The stent of claim 1, wherein each said first, second and third elongatable member consists of a plurality of intermediate sections arranged in a serpentine pattern.
4. The stent of claim 1, wherein said connecting members and said first, second and third elongatable members are integrally formed and have uniform thin-walled thickness in the radial direction.
5. The stent of claim 4, wherein said connecting members and said first, second and third elongatable members are formed from the same material.
6. The stent of claim 5, wherein said material is a low-memory, more plastic than elastic, bio-compatible material.
7. The stent of claim 6, wherein the material is selected from the group of materials consisting of stainless steel, silver, gold, tantalum, titanium, NiTi alloy and thermoplastic polymers.
8. The stent of claim 1, wherein the elongated length of the third elongatable members is approximately half the longitudinal length of the connecting members.
9. A permanent, expandable tubular stent comprising:
a uniform arrangement of connecting members in a cylindrical configuration of an initial length and of an initial diameter about a longitudinal axis, each connecting member having a proximal end and a distal end and being oriented with said proximal end nearer a first end of said stent than said distal end which is nearer an opposite, second end of said stent, the arrangement of connecting members comprising:
at least three sets each of an equal plurality of circumferentially-spaced connecting members, each said set being coaxially-arranged along a longitudinal axis and being axially displaced a predetermined distance from each adjacent set, the connecting members of each successive set being radially-interspaced with respect to the connecting members of the preceding set with said predetermined distance being such that the proximal ends of the connecting members of each successive set are axially-spaced from the distal ends of the connecting members of the preceding set;
a plurality of first elongatable members each disposed between the proximal ends of each pair of circumferentially-adjacent connecting members of the first set;
a plurality of second elongatable members each disposed between the distal ends of each pair of circumferentially-adjacent members of the last set;
a plurality of third elongatable members each disposed between the distal ends of the connecting members of each set and the proximal end of each circumferentially-adjacent connecting member of each successive set;
said first, second and third elongatable members being sufficiently plastically deformable such that internal application of a generally uniformly-distributed, radially outwardly directed force causes said first and second elongatable members to radially expand and said third elongatable members to deform and elongate uniformly in a radially diagonal direction, thereby causing the connecting members of each set to move radially outwardly while the connecting members of adjacent sets move axially away from one another, thus, increasing the length of the stent from said initial length and the diameter of the stent from said initial diameter in relation to the amount of said radially outwardly directed force, said stent being flexible about said longitudinitial axis and said initial diameter being such as to permit intraluminal delivery of said stent into a body passageway.
10. The stent of claim 9, wherein each said first, second and third elongatable member consists of a plurality of intermediate sections joined at right angles.
11. The stent of claim 9, wherein each said first, second and third elongatable member consists of a plurality of intermediate sections arranged in a serpentine pattern.
12. The stent of claim 9, wherein said connecting members and said first, second and third elongatable members are integrally formed and have uniform thin-walled thickness in the radial direction.
13. The stent of claim 12, wherein said connecting members and said first, second and third elongatable members are formed from the same material.
14. The stent of claim 13, wherein said material is a low-memory, more plastic than elastic, bio-compatible material.
15. The stent of claim 14, wherein the material is selected from the group of materials consisting of stainless steel, silver, gold, tantalum, titanium, NiTi alloy and thermoplastic polymers.
16. The stent of claim 9, wherein the elongated length of the third elongatable members is approximately ten times the longitudinal length of the connecting members.
CA 2272667 1999-05-25 1999-05-25 Permanent expandable intraluminal tubular stent Abandoned CA2272667A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CA 2272667 CA2272667A1 (en) 1999-05-25 1999-05-25 Permanent expandable intraluminal tubular stent

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA 2272667 CA2272667A1 (en) 1999-05-25 1999-05-25 Permanent expandable intraluminal tubular stent

Publications (1)

Publication Number Publication Date
CA2272667A1 true CA2272667A1 (en) 2000-11-25

Family

ID=29589042

Family Applications (1)

Application Number Title Priority Date Filing Date
CA 2272667 Abandoned CA2272667A1 (en) 1999-05-25 1999-05-25 Permanent expandable intraluminal tubular stent

Country Status (1)

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CA (1) CA2272667A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1469791A2 (en) * 2001-12-03 2004-10-27 Intek Technology LLC Multi-segment modular stent and methods for manufacturing stents
EP1917931A3 (en) * 2001-12-03 2013-02-27 Intek Technology LLC Multi-segment modular stent and methods for manufacturing stents

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1469791A2 (en) * 2001-12-03 2004-10-27 Intek Technology LLC Multi-segment modular stent and methods for manufacturing stents
EP1469791A4 (en) * 2001-12-03 2005-04-20 Intek Technology Llc Multi-segment modular stent and methods for manufacturing stents
EP1917931A3 (en) * 2001-12-03 2013-02-27 Intek Technology LLC Multi-segment modular stent and methods for manufacturing stents

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