JP2007506456A - 弁式バルーン・ステント - Google Patents

弁式バルーン・ステント Download PDF

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JP2007506456A
JP2007506456A JP2005508979A JP2005508979A JP2007506456A JP 2007506456 A JP2007506456 A JP 2007506456A JP 2005508979 A JP2005508979 A JP 2005508979A JP 2005508979 A JP2005508979 A JP 2005508979A JP 2007506456 A JP2007506456 A JP 2007506456A
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stent
medical
valve
shapes
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モハメド ナビル ロトフィ、ワエル
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モハメド ナビル ロトフィ、ワエル
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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
    • A61F2/24—Heart valves ; Vascular valves, e.g. venous valves; Heart implants, e.g. passive devices for improving the function of the native valve or the heart muscle; Transmyocardial revascularisation [TMR] devices; Valves implantable in the body
    • A61F2/2412—Heart valves ; Vascular valves, e.g. venous valves; Heart implants, e.g. passive devices for improving the function of the native valve or the heart muscle; Transmyocardial revascularisation [TMR] devices; Valves implantable in the body with soft flexible valve members, e.g. tissue valves shaped like natural valves
    • 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
    • A61F2/24—Heart valves ; Vascular valves, e.g. venous valves; Heart implants, e.g. passive devices for improving the function of the native valve or the heart muscle; Transmyocardial revascularisation [TMR] devices; Valves implantable in the body
    • A61F2/2421—Heart valves ; Vascular valves, e.g. venous valves; Heart implants, e.g. passive devices for improving the function of the native valve or the heart muscle; Transmyocardial revascularisation [TMR] devices; Valves implantable in the body with non-pivoting rigid closure members
    • A61F2/2424—Ball valves
    • 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
    • A61F2/24—Heart valves ; Vascular valves, e.g. venous valves; Heart implants, e.g. passive devices for improving the function of the native valve or the heart muscle; Transmyocardial revascularisation [TMR] devices; Valves implantable in the body
    • A61F2/2412—Heart valves ; Vascular valves, e.g. venous valves; Heart implants, e.g. passive devices for improving the function of the native valve or the heart muscle; Transmyocardial revascularisation [TMR] devices; Valves implantable in the body with soft flexible valve members, e.g. tissue valves shaped like natural valves
    • A61F2/2418—Scaffolds therefor, e.g. support 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
    • 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
    • A61F2250/0003—Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof having an inflatable pocket filled with fluid, e.g. liquid or gas

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  • Health & Medical Sciences (AREA)
  • Cardiology (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Transplantation (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Vascular Medicine (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Prostheses (AREA)
  • Media Introduction/Drainage Providing Device (AREA)

Abstract

本発明は、弁式の膨張可能なバルーン・ステントであって、弁として、例えば心臓の弁として機能するように侵襲的カテーテル法により固定されるステントに関するものである。

Description

本発明は、血管内へ導入されて弁として機能する膨張可能かつ拡張可能な、ライニングを有する弁式バルーン・ステント（ステントは拡張可能で、そのライニングは膨張可能又は拡張可能であり、バルーンは膨張可能かつ収縮可能である）に関するものである。
機能しなくなった弁を、別のヒト、動物、又は金属の弁と交換する外科処置には、固有の出費、危険性、および問題が伴う。動物本来の弁の固定は、カテーテル法によって行われる。
弁交換のための外科手術には、高額の費用がかかり、危険性が伴う。弁の配置後の弁の処理に融通性がない。弁自体の費用も高額である。
ステントは収縮した寸法で導入された後、目標とする血管の寸法となるように拡張される。次いで、バルーンが適当な材料、例えば二酸化炭素、通常生理的食塩水、空気等で膨張させられる。
中心のバルーンのほかに、近位開口が膨張可能である。
より簡単に言えば、一方の側に狭い開口を有する拡張可能なステントが取り付けられ、他方の側からケージ（籠部）が取り付けられた（狭窄部は膨張可能である）、膨張可能なボールが入れられているケージ状設計である。このボールが弁として機能する。
この目的のために、心臓病の治療で普通に使用されている金属製の拡張可能なステントを、この新しい形状に変更することができる。ケージ内部を移動するバルーンは、膨張可能かつ非反応性の組織（ティシュー）、例えば普通に用いられている弁切開用のバルーンに似たもので準備できる。
弁式バルーン・ステントの配置時に、損傷して機能しなくなった前の弁はつぶすことができる（新しい弁を正確に前の弁の位置へ配置できる）。
この処置は、カテーテル法の実験室でカテーテルによる侵襲処置により行われるだろう。他の選択肢が厄介な場合には、緊急の弁交換や恒久的な弁交換も可能であろう。
出願人は、こうすることにより実際の処置の革命となることを期待している。なぜなら、死に至らしめることなしに、膨張可能な弁の交換をカテーテルによって行う能力により、明らかに、単純な心臓傷害も複雑なそれも、外科的矯正が不要になるか、又は低致死率で行えるまで外科的矯正を少なくとも延期できるからである。
侵襲的なカテーテル法により外科処置と同じ結果が達成される。
配置中及び配置後の弁の処理に融通性がある。
外科処置又は手術の危険性及び出費を避けることができる。
通常使用される血管内用ステントを製造している選択された会社は、当方が提案した新しい設計及びライニングにより該会社の幾つかのステントの性能を高めることに発明者と合意した後に選択される。
本発明の略示図。

Claims (6)

  1. 流体又はガスの流れに対する弁として機能するための、ステント（医療用又は非医療用）への膨張可能及び／又は圧縮可能及び／又は制御可能なライニングの付加であって、
    ａ．それらに限定されないが、金属製、プラスチック製、全体的に膨張可能なステント、その他医療用又は非医療用のステントを含む全てのステント形態が含まれ、
    ｂ．それらに限定されないが、環状、管状、円筒状、円錐状、五角形状等々のステント形状を含む全ての形状のステント設計が含まれ、
    ｃ．それらには限定されないが、ゴアテックス、テフロン(登録商標)、ＰＴＦＥを含む、同じ目的に使用される全てのライニング材料及び形状が含まれる、ライニングの付加。
  2. 流体又はガスの流れに対する弁として機能するための、ステント（医療用又は非医療用）に動物固有の又は処理済の弁を除いた、固定ライニング狭窄部の付加であって、
    ａ．それらに限定されないが、金属製、プラスチック製、全体的に膨張可能なステント、その他医療用又は非医療用のステントを含む全てのステント形態が含まれ、
    ｂ．それらに限定されないが、環状、管状、円筒状、円錐状、五角形状等々のステント形状を含む全ての形状のステント設計が含まれ、
    ｃ．それらには限定されないが、ゴアテックス、テフロン(登録商標)、ＰＴＦＥを含む、同じ目的に使用される全てのライニング材料及び形状が含まれる、固定ライニング狭窄部の付加。
  3. 同じ目的（流体又はガスが血管を流れるための弁として機能させること）に使用されるステントなしの設計。侵襲技術、外科技術、又は内視鏡技術を含むが、それらに限定はされない移植技術。
  4. 血管、気道、尿道、胃腸管、又は工業用の管の内部を含むが、それらに限定されるものではない、この技術の使用。
  5. この目的のために既に提案した設計が含まれるが、それらの設計に限定はされない。
  6. １方向または２以上の方向で血管内を流れるような弁機能を実現するであろう設計もまた含まれる。
JP2005508979A 2003-09-24 2003-11-23 弁式バルーン・ステント Pending JP2007506456A (ja)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EG2003090946A EG24012A (en) 2003-09-24 2003-09-24 Valved balloon stent
PCT/EG2003/000010 WO2005027790A1 (en) 2003-09-24 2003-11-23 Valved balloon stent

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JP2007506456A true JP2007506456A (ja) 2007-03-22

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US (1) US20070078509A1 (ja)
EP (1) EP1670387A1 (ja)
JP (1) JP2007506456A (ja)
CN (1) CN1838926A (ja)
AU (1) AU2003280327A1 (ja)
BR (1) BR0318480A (ja)
CA (1) CA2538373C (ja)
EG (1) EG24012A (ja)
WO (1) WO2005027790A1 (ja)

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US20070078509A1 (en) 2007-04-05
BR0318480A (pt) 2006-09-12
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