WO2009041664A1 - ステントおよび生体器官拡張器具 - Google Patents

ステントおよび生体器官拡張器具 Download PDF

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Publication number
WO2009041664A1
WO2009041664A1 PCT/JP2008/067564 JP2008067564W WO2009041664A1 WO 2009041664 A1 WO2009041664 A1 WO 2009041664A1 JP 2008067564 W JP2008067564 W JP 2008067564W WO 2009041664 A1 WO2009041664 A1 WO 2009041664A1
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WO
WIPO (PCT)
Prior art keywords
linear elements
stent
vivo
indwelled
biodegradable
Prior art date
Application number
PCT/JP2008/067564
Other languages
English (en)
French (fr)
Inventor
Takayuki Kito
Hiroki Goto
Original Assignee
Terumo Kabushiki Kaisha
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
Priority claimed from JP2007252769A external-priority patent/JP5242979B2/ja
Priority claimed from JP2007252768A external-priority patent/JP2009082244A/ja
Priority claimed from JP2007252767A external-priority patent/JP2009082243A/ja
Application filed by Terumo Kabushiki Kaisha filed Critical Terumo Kabushiki Kaisha
Priority to EP08833752A priority Critical patent/EP2186492B1/en
Publication of WO2009041664A1 publication Critical patent/WO2009041664A1/ja
Priority to US12/732,984 priority patent/US8801770B2/en
Priority to US14/319,399 priority patent/US9375329B2/en

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    • 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
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
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    • 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
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    • 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
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    • 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
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    • A61L31/125—Composite materials, i.e. containing one material dispersed in a matrix of the same or different material having a macromolecular matrix
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    • A—HUMAN NECESSITIES
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    • 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
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    • 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
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  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Veterinary Medicine (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Biomedical Technology (AREA)
  • Vascular Medicine (AREA)
  • Epidemiology (AREA)
  • Chemical & Material Sciences (AREA)
  • Surgery (AREA)
  • Cardiology (AREA)
  • Transplantation (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Inorganic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Composite Materials (AREA)
  • Materials Engineering (AREA)
  • Anesthesiology (AREA)
  • Hematology (AREA)
  • Media Introduction/Drainage Providing Device (AREA)
  • Materials For Medical Uses (AREA)
  • Prostheses (AREA)

Abstract

　本発明のステントは、線状構成要素により構成され、生体内への留置操作時に変形することにより生体内組織に密着するステントである。ステント１は、生体内への留置操作時に変形し、拡張維持力を発揮する線状構成要素を持ち、生体内への留置操作時に変形する線状構成要素は、非生分解性金属製線状構成要素２１，２２，２３，２４とこの非生分解性金属製線状構成要素２１，２２，２３，２４と結合した複数の生分解性材料製線状構成要素３とにより形成されている。さらに、ステント１は、生体内留置時には、非生分解性金属製線状構成要素２１，２２，２３，２４と記生分解性材料製線状構成要素３の両者による拡張維持力を発揮し、所定期間経過後の生分解性材料製線状構成要素３の生分解の進行により、拡張維持力が低下するものとなっている。
PCT/JP2008/067564 2007-09-27 2008-09-26 ステントおよび生体器官拡張器具 WO2009041664A1 (ja)

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EP08833752A EP2186492B1 (en) 2007-09-27 2008-09-26 Stent and living organ dilator
US12/732,984 US8801770B2 (en) 2007-09-27 2010-03-26 Stent and living organ dilator
US14/319,399 US9375329B2 (en) 2007-09-27 2014-06-30 Stent and living organ dilator

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JP2007252769A JP5242979B2 (ja) 2007-09-27 2007-09-27 生体内留置用ステントおよび生体器官拡張器具
JP2007-252769 2007-09-27
JP2007252768A JP2009082244A (ja) 2007-09-27 2007-09-27 生体内留置用ステントおよび生体器官拡張器具
JP2007-252768 2007-09-27
JP2007-252767 2007-09-27
JP2007252767A JP2009082243A (ja) 2007-09-27 2007-09-27 生体内留置用ステントおよび生体器官拡張器具

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US14/319,399 Continuation US9375329B2 (en) 2007-09-27 2014-06-30 Stent and living organ dilator

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US20100249904A1 (en) 2010-09-30
US9375329B2 (en) 2016-06-28
US8801770B2 (en) 2014-08-12
EP2186492A4 (en) 2010-12-29
EP2186492A1 (en) 2010-05-19
US20140316512A1 (en) 2014-10-23
EP2186492B1 (en) 2012-08-15

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