CA2256323A1 - Stent for vessel - Google Patents

Stent for vessel

Info

Publication number
CA2256323A1
CA2256323A1 CA002256323A CA2256323A CA2256323A1 CA 2256323 A1 CA2256323 A1 CA 2256323A1 CA 002256323 A CA002256323 A CA 002256323A CA 2256323 A CA2256323 A CA 2256323A CA 2256323 A1 CA2256323 A1 CA 2256323A1
Authority
CA
Canada
Prior art keywords
vessels
stent
tubular body
vessel
low rigidity
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.)
Granted
Application number
CA002256323A
Other languages
French (fr)
Other versions
CA2256323C (en
Inventor
Keiji Igaki
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.)
Igaki Iryo Sekkei KK
Original Assignee
Kabushikikaisha Igaki Iryo Sekkei
Keiji Igaki
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 Kabushikikaisha Igaki Iryo Sekkei, Keiji Igaki filed Critical Kabushikikaisha Igaki Iryo Sekkei
Publication of CA2256323A1 publication Critical patent/CA2256323A1/en
Application granted granted Critical
Publication of CA2256323C publication Critical patent/CA2256323C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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
    • 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
    • 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
    • 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
    • A61F2250/00—Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2250/0014—Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof having different values of a given property or geometrical feature, e.g. mechanical property or material property, at different locations within the same prosthesis
    • A61F2250/0015—Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof having different values of a given property or geometrical feature, e.g. mechanical property or material property, at different locations within the same prosthesis differing in density or specific weight
    • 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
    • A61F2250/00—Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2250/0014—Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof having different values of a given property or geometrical feature, e.g. mechanical property or material property, at different locations within the same prosthesis
    • A61F2250/0018—Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof having different values of a given property or geometrical feature, e.g. mechanical property or material property, at different locations within the same prosthesis differing in elasticity, stiffness or compressibility

Abstract

A stent for vessels to be inserted into vessels such as blood vessels, lymph vessels, bile ducts, and ureters, comprising a tubular body forming one flow passage from one of the end portions to the other and low rigidity portions formed integrally on both sides of the center of the tubular body and having lower rigidity than that of the center portion. Each low rigidity portion has a Young's modulus approximate to that of the living body vessel into which the stent is fitted and consequently, can restrict the occurrence of a stress concentration portion in the vessels when it is inserted into the vessels.
CA 2256323 1997-03-31 1998-03-31 Stent for vessel Expired - Fee Related CA2256323C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP9/78682 1997-03-31
JP7868297 1997-03-31
PCT/JP1998/001489 WO1998043695A1 (en) 1997-03-31 1998-03-31 Stent for vessels

Publications (2)

Publication Number Publication Date
CA2256323A1 true CA2256323A1 (en) 1998-10-08
CA2256323C CA2256323C (en) 2007-05-22

Family

ID=13668652

Family Applications (1)

Application Number Title Priority Date Filing Date
CA 2256323 Expired - Fee Related CA2256323C (en) 1997-03-31 1998-03-31 Stent for vessel

Country Status (8)

Country Link
US (3) US6200335B1 (en)
EP (1) EP0916362B1 (en)
JP (1) JP4592120B2 (en)
AT (1) ATE435680T1 (en)
AU (1) AU746984B2 (en)
CA (1) CA2256323C (en)
DE (1) DE69840957D1 (en)
WO (1) WO1998043695A1 (en)

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Also Published As

Publication number Publication date
US20010032012A1 (en) 2001-10-18
US6200335B1 (en) 2001-03-13
JP4592120B2 (en) 2010-12-01
CA2256323C (en) 2007-05-22
EP0916362A4 (en) 2005-05-25
DE69840957D1 (en) 2009-08-20
EP0916362B1 (en) 2009-07-08
US6632242B2 (en) 2003-10-14
AU6521398A (en) 1998-10-22
ATE435680T1 (en) 2009-07-15
US6413272B1 (en) 2002-07-02
WO1998043695A1 (en) 1998-10-08
AU746984B2 (en) 2002-05-09
EP0916362A1 (en) 1999-05-19

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