JP2006520630A - 螺旋状ステント - Google Patents
螺旋状ステント Download PDFInfo
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- JP2006520630A JP2006520630A JP2006505978A JP2006505978A JP2006520630A JP 2006520630 A JP2006520630 A JP 2006520630A JP 2006505978 A JP2006505978 A JP 2006505978A JP 2006505978 A JP2006505978 A JP 2006505978A JP 2006520630 A JP2006520630 A JP 2006520630A
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Images
Classifications
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- 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
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- 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
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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
- A61F2/95—Instruments specially adapted for placement or removal of stents or stent-grafts
- A61F2/958—Inflatable balloons for placing stents or stent-grafts
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- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
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- A61M25/1002—Balloon catheters characterised by balloon shape
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
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- F16L11/04—Hoses, i.e. flexible pipes made of rubber or flexible plastics
- F16L11/12—Hoses, i.e. flexible pipes made of rubber or flexible plastics with arrangements for particular purposes, e.g. specially profiled, with protecting layer, heated, electrically conducting
- F16L11/121—Hoses, i.e. flexible pipes made of rubber or flexible plastics with arrangements for particular purposes, e.g. specially profiled, with protecting layer, heated, electrically conducting specially profiled cross sections
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
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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
- 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
- A61F2/88—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure the wire-like elements formed as helical or spiral coils
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- 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
- A61F2/89—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure the wire-like elements comprising two or more adjacent rings flexibly connected by separate members
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- 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
- A61F2/02—Prostheses implantable into the body
- A61F2/04—Hollow or tubular parts of organs, e.g. bladders, tracheae, bronchi or bile ducts
- A61F2/06—Blood vessels
- A61F2002/068—Modifying the blood flow model, e.g. by diffuser or deflector
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- 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
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
- A61F2002/30108—Shapes
- A61F2002/30199—Three-dimensional shapes
- A61F2002/30289—Three-dimensional shapes helically-coiled
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- 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
- A61F2220/0025—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
- A61F2220/0075—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements sutured, ligatured or stitched, retained or tied with a rope, string, thread, wire or cable
Landscapes
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Veterinary Medicine (AREA)
- Public Health (AREA)
- General Health & Medical Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- Cardiology (AREA)
- Transplantation (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Vascular Medicine (AREA)
- Mechanical Engineering (AREA)
- Pulmonology (AREA)
- Child & Adolescent Psychology (AREA)
- Gastroenterology & Hepatology (AREA)
- Biophysics (AREA)
- Anesthesiology (AREA)
- Hematology (AREA)
- Media Introduction/Drainage Providing Device (AREA)
- Materials For Medical Uses (AREA)
- Prostheses (AREA)
- Dowels (AREA)
- Walking Sticks, Umbrellas, And Fans (AREA)
Abstract
Description
したがって、旋回流を与え、軸速度及び壁近くの部分の速度を比較的一定に分布させることによって流れ特性を改良できる。また、断面に渡る混合が促進される、流動不安定の発生の可能性が減少する。淀み領域の回避とフラッシングが促進される。移植の所とその下流での堆積及び病理の進展の可能性が減少する。
この実施例では、曲げ幅Wは14mmであったので、
A = (W-DE)/2 = (14-12)/2 = 1 mm
以前に説明したように、「相対振幅」ARは、AR = A / DIと定義される。
Claims (20)
- 潰れた状態であるときに人体又は動物の体の流体導管に挿入され、拡張状態へ拡張されるステントであって前記導管に係合する外壁を有し、該外壁は前記拡張状態において縦方向及び周囲方向に延伸する螺旋状部分であって、ステントが前記潰れた状態から前記拡張状態まで拡張するときに拡張に抵抗する螺旋状部分を有するステント。
- 請求項1に記載のステントであって、前記拡張状態のステントの中心線がほぼ螺旋状の経路をとるステント。
- 請求項1又は2に記載のステントであって、前記螺旋状部分は、該螺旋状部分に隣接するステントの部分のステント形成材料の量よりも多いステント形成材料の量を含むステント。
- 請求項1、2又は3に記載のステントであって、前記螺旋状部分は、ステントの拡張の間に湾曲が真っ直ぐになることに抵抗する湾曲部分を有する構造部材を含むステント。
- 請求項1乃至4のいずれか1つに記載のステントであって、自己拡張型であるステント。
- 請求項1乃至4のいずれか1つに記載のステントであって、バルーンによって拡張されるステント。
- 請求項1乃至6のいずれか1つに記載のステントであって、前記拡張状態により、前記ステントが縦方向に延伸するときに前記流体導管を少なくとも1つのターンを持つ非平面カーブにするステント。
- 請求項1乃至7のいずれか1つに記載のステントであって、実質的な捩りを生じることなく前記潰れた状態から前記拡張状態に拡張するステント。
- 潰れた状態であるときに人体又は動物の体の流体導管に挿入され、バルーンによって拡張状態へ拡張されるステントであって拡張可能な壁を持つバルーンを含み、前記壁は前記拡張状態において縦方向及び周囲方向に延伸する螺旋状部分であって、前記バルーンが潰れた状態から拡張状態まで拡張するときに拡張に抵抗する螺旋状部分を有するステント。
- 請求項9に記載のステントであって、 バルーンによって拡張可能な前記壁の前記螺旋状部分は隣接する壁部分の壁厚よりも大きい壁厚を持つステント。
- 請求項9又は10に記載のステントであって、前記拡張状態において、縦方向に延伸するときに、前記流体導管を少なくとも1つのターンを持つ非平面カーブにするステント。
- 潰れた状態であるときに人体又は動物の体の流体導管へ挿入され、拡張状態へ拡張するステントであって、前記拡張状態において、ほぼ螺旋状の経路をとる中心線を持つ流れ内腔を前記流体導管に持たせ、前記螺旋状中心線は65°以下のネジレ角と、前記流れ内腔の内径の半分以下である振幅を有するステント。
- 請求項12に記載のステントであって、前記螺旋状中心線の前記振幅を前記チューブの内径で除した値は少なくとも0.05であるステント。
- 請求項12又は13に記載のステントであって、前記拡張状態において、前記導管の前記流れ内腔に突出するリブを実質的に有していないステント。
- 請求項12、13又は14に記載のステントであって、前記ネジレ角は15°以下であるステント。
- 請求項12乃至15のいずれか1つに記載のステントであって、前記ステント付き導管の前記流れ内腔は実質的に円形断面であるステント。
- 請求項12乃至16のいずれか1つに記載のステントであって、前記ステント付き導管の前記螺旋状中心線は前記ステントの全長の一部に渡ってのみ延伸するステント。
- 請求項12乃至16のいずれか1つに記載のステントであって、前記ステント付き導管の前記螺旋状の中心線は前記ステントのほぼ全長に渡って延伸するステント。
- 請求項12乃至18のいずれか1つに記載のステントであって、ステントの前記中心線は湾曲軸回りのほぼ螺旋状の経路を通るステント。
- 請求項1乃至19のいずれか1つに記載のステントであって、薬剤コーティングを含むステント。
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GBGB0306176.9A GB0306176D0 (en) | 2003-03-18 | 2003-03-18 | Tubing |
GB0306176.9 | 2003-03-18 | ||
GB0317003A GB0317003D0 (en) | 2003-07-21 | 2003-07-21 | Stent |
GB0317003.2 | 2003-07-21 | ||
PCT/GB2004/001155 WO2004082533A1 (en) | 2003-03-18 | 2004-03-18 | Helical stent |
Related Child Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2010021334A Division JP5328046B2 (ja) | 2003-03-18 | 2010-02-02 | 螺旋状ステント |
JP2010021333A Division JP5108906B2 (ja) | 2003-03-18 | 2010-02-02 | 螺旋状ステント |
Publications (3)
Publication Number | Publication Date |
---|---|
JP2006520630A true JP2006520630A (ja) | 2006-09-14 |
JP2006520630A5 JP2006520630A5 (ja) | 2010-04-02 |
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CA (1) | CA2519437A1 (ja) |
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Also Published As
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---|---|
US8784476B2 (en) | 2014-07-22 |
JP2010142660A (ja) | 2010-07-01 |
DE602004023700D1 (de) | 2009-12-03 |
JP4740118B2 (ja) | 2011-08-03 |
EP2292183B1 (en) | 2017-10-25 |
EP2145601A2 (en) | 2010-01-20 |
JP2010142659A (ja) | 2010-07-01 |
JP5328046B2 (ja) | 2013-10-30 |
US8226704B2 (en) | 2012-07-24 |
WO2004082533A1 (en) | 2004-09-30 |
US20060265051A1 (en) | 2006-11-23 |
ATE446065T1 (de) | 2009-11-15 |
EP2292183A1 (en) | 2011-03-09 |
CA2519437A1 (en) | 2004-09-30 |
EP2145601A3 (en) | 2010-04-14 |
US20090276029A1 (en) | 2009-11-05 |
JP5108906B2 (ja) | 2012-12-26 |
EP1605867B1 (en) | 2009-10-21 |
WO2004082533A8 (en) | 2005-02-24 |
EP2145601B1 (en) | 2015-05-06 |
AU2004222494A1 (en) | 2004-09-30 |
EP1605867A1 (en) | 2005-12-21 |
BRPI0408418A (pt) | 2006-03-21 |
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