WO2002043787A1 - Stent - Google Patents
Stent Download PDFInfo
- Publication number
- WO2002043787A1 WO2002043787A1 PCT/EP2000/012078 EP0012078W WO0243787A1 WO 2002043787 A1 WO2002043787 A1 WO 2002043787A1 EP 0012078 W EP0012078 W EP 0012078W WO 0243787 A1 WO0243787 A1 WO 0243787A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- stent
- weight
- niobium
- alloy
- stainless steel
- Prior art date
Links
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L31/00—Materials for other surgical articles, e.g. stents, stent-grafts, shunts, surgical drapes, guide wires, materials for adhesion prevention, occluding devices, surgical gloves, tissue fixation devices
- A61L31/02—Inorganic materials
- A61L31/022—Metals or alloys
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L31/00—Materials for other surgical articles, e.g. stents, stent-grafts, shunts, surgical drapes, guide wires, materials for adhesion prevention, occluding devices, surgical gloves, tissue fixation devices
- A61L31/14—Materials characterised by their function or physical properties, e.g. injectable or lubricating compositions, shape-memory materials, surface modified materials
- A61L31/18—Materials at least partially X-ray or laser opaque
-
- 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
Definitions
- the invention relates to a stent, especially a stent for reinforcing a blood vessel wall.
- Stents are generally known, and by way of example reference is made to US-A-5628787, US-A-5630840 and EP-A-0873734.
- Gold-coated stainless steel stent are difficult to make and are relatively expensive. Moreover there might be a problem that the gold layer is not sufficiently adhered to the supporting base material so that locally the coating cracks or flakes off the stent during expansion. Such local removal of the gold coating can result into adverse corrosion effects and free floating of gold particles in the visculature. Moreover the use of two different metals or metal alloys contacting each other may imply galvanic reactions of which long term clinical effects are unknown, but of which it is suspected that they negatively affect restenosis rates.
- tantalium In another stent use is made of tantalium as constructive material for the stent. This has resulted in a reliable stent, but tantalium has the disadvantage that it is too visible in radiographic imaging, to such an extend that it obstructs the imaging of the result of the implantation of such stent. It is therefore an object of the invention to provide a stent avoiding the above mentioned problems.
- the stent is made of an alloy comprising at least 90 % by weight of niobium.
- niobium is a metal offering the combination of required characteristics especially with respect to the mechanical and chemical properties and in view of the radiographic imaging.
- the alloy comprise at least 95 % by weight niobium and more preferably at least 98 %.
- Niobium can be combined with a number of other metals in order to obtain the required characteristics.
- the niobium alloy contains further one or more elements selected from the group of Zr, Ti, V, Hf, W, Ta and Mo.
- the alloy consists of 98,5 - 99,5 % by weight of niobium and 0,1 - 1 ,5 % by weight of zirconium.
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/EP2000/012078 WO2002043787A1 (en) | 2000-11-28 | 2000-11-28 | Stent |
EP00981326A EP1337286A1 (en) | 2000-11-28 | 2000-11-28 | Stent |
AU2001218611A AU2001218611A1 (en) | 2000-11-28 | 2000-11-28 | Stent |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/EP2000/012078 WO2002043787A1 (en) | 2000-11-28 | 2000-11-28 | Stent |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2002043787A1 true WO2002043787A1 (en) | 2002-06-06 |
Family
ID=8164182
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2000/012078 WO2002043787A1 (en) | 2000-11-28 | 2000-11-28 | Stent |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP1337286A1 (en) |
AU (1) | AU2001218611A1 (en) |
WO (1) | WO2002043787A1 (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2004019822A1 (en) * | 2002-08-31 | 2004-03-11 | Boston Scientific Limited | Niobium stent |
EP1403390A1 (en) * | 2002-09-27 | 2004-03-31 | W.C. Heraeus GmbH & Co. KG | A Nb-Zr-Ta Alloy for use in the manufacture of Stents |
WO2005044327A1 (en) * | 2003-11-11 | 2005-05-19 | W.C. Heraeus Gmbh | Niobium-zirconium alloy for medical devices or their parts |
WO2006076447A2 (en) * | 2005-01-13 | 2006-07-20 | Boston Scientific Limited | Medical devices and comprising alloys |
WO2008100852A3 (en) * | 2007-02-13 | 2009-12-03 | Abbott Cardiovascular Systems Inc. | Mri compatible, radiopaque alloys for use in medical devices |
US8349249B2 (en) | 2003-02-10 | 2013-01-08 | Heraeus Precious Metals Gmbh & Co. Kg | Metal alloy for medical devices and implants |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5628787A (en) | 1993-01-19 | 1997-05-13 | Schneider (Usa) Inc. | Clad composite stent |
US5630840A (en) | 1993-01-19 | 1997-05-20 | Schneider (Usa) Inc | Clad composite stent |
EP0873734A2 (en) | 1997-04-25 | 1998-10-28 | Nitinol Development Corporation | Shape memory alloy stent |
US5913871A (en) * | 1996-09-25 | 1999-06-22 | Medtronic, Inc. | Balloon modification for improved stent fixation and deployment |
US5931867A (en) * | 1997-04-25 | 1999-08-03 | W.C. Heraeus Gmbh | Radially expandable support device |
WO1999065537A1 (en) * | 1998-06-12 | 1999-12-23 | Micro Science Medical Ag | Superficial implant and surface coating for stents and other implants |
WO2000068448A1 (en) * | 1999-05-05 | 2000-11-16 | Davitech, Inc. | Nb-Ti-Zr-Mo ALLOYS FOR MEDICAL AND DENTAL DEVICES |
-
2000
- 2000-11-28 WO PCT/EP2000/012078 patent/WO2002043787A1/en not_active Application Discontinuation
- 2000-11-28 EP EP00981326A patent/EP1337286A1/en not_active Withdrawn
- 2000-11-28 AU AU2001218611A patent/AU2001218611A1/en not_active Abandoned
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5628787A (en) | 1993-01-19 | 1997-05-13 | Schneider (Usa) Inc. | Clad composite stent |
US5630840A (en) | 1993-01-19 | 1997-05-20 | Schneider (Usa) Inc | Clad composite stent |
US5913871A (en) * | 1996-09-25 | 1999-06-22 | Medtronic, Inc. | Balloon modification for improved stent fixation and deployment |
EP0873734A2 (en) | 1997-04-25 | 1998-10-28 | Nitinol Development Corporation | Shape memory alloy stent |
US5931867A (en) * | 1997-04-25 | 1999-08-03 | W.C. Heraeus Gmbh | Radially expandable support device |
WO1999065537A1 (en) * | 1998-06-12 | 1999-12-23 | Micro Science Medical Ag | Superficial implant and surface coating for stents and other implants |
WO2000068448A1 (en) * | 1999-05-05 | 2000-11-16 | Davitech, Inc. | Nb-Ti-Zr-Mo ALLOYS FOR MEDICAL AND DENTAL DEVICES |
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2004019822A1 (en) * | 2002-08-31 | 2004-03-11 | Boston Scientific Limited | Niobium stent |
EP1403390A1 (en) * | 2002-09-27 | 2004-03-31 | W.C. Heraeus GmbH & Co. KG | A Nb-Zr-Ta Alloy for use in the manufacture of Stents |
US8349249B2 (en) | 2003-02-10 | 2013-01-08 | Heraeus Precious Metals Gmbh & Co. Kg | Metal alloy for medical devices and implants |
US8403980B2 (en) | 2003-02-10 | 2013-03-26 | Heraeus Materials Technology Gmbh & Co. Kg | Metal alloy for medical devices and implants |
EP1444993B2 (en) † | 2003-02-10 | 2013-06-26 | W.C. Heraeus GmbH | Improved metal alloy for medical devices and implants |
WO2005044327A1 (en) * | 2003-11-11 | 2005-05-19 | W.C. Heraeus Gmbh | Niobium-zirconium alloy for medical devices or their parts |
WO2006076447A2 (en) * | 2005-01-13 | 2006-07-20 | Boston Scientific Limited | Medical devices and comprising alloys |
WO2006076447A3 (en) * | 2005-01-13 | 2007-01-11 | Boston Scient Scimed Inc | Medical devices and comprising alloys |
US7727273B2 (en) | 2005-01-13 | 2010-06-01 | Boston Scientific Scimed, Inc. | Medical devices and methods of making the same |
US7938854B2 (en) | 2005-01-13 | 2011-05-10 | Boston Scientific Scimed, Inc. | Medical devices and methods of making the same |
WO2008100852A3 (en) * | 2007-02-13 | 2009-12-03 | Abbott Cardiovascular Systems Inc. | Mri compatible, radiopaque alloys for use in medical devices |
Also Published As
Publication number | Publication date |
---|---|
EP1337286A1 (en) | 2003-08-27 |
AU2001218611A1 (en) | 2002-06-11 |
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