JP4294480B2 - 大動脈瘤用血管内人工器官 - Google Patents
大動脈瘤用血管内人工器官 Download PDFInfo
- Publication number
- JP4294480B2 JP4294480B2 JP2003535676A JP2003535676A JP4294480B2 JP 4294480 B2 JP4294480 B2 JP 4294480B2 JP 2003535676 A JP2003535676 A JP 2003535676A JP 2003535676 A JP2003535676 A JP 2003535676A JP 4294480 B2 JP4294480 B2 JP 4294480B2
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- JP
- Japan
- Prior art keywords
- prosthesis
- filler
- outer cover
- tubular member
- 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.)
- Expired - Fee Related
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Classifications
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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
- A61F2/07—Stent-grafts
-
- 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
- A61F2002/065—Y-shaped blood vessels
-
- 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
- A61F2/07—Stent-grafts
- A61F2002/075—Stent-grafts the stent being loosely attached to the graft material, e.g. by stitching
-
- 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
- A61F2230/0028—Shapes in the form of latin or greek characters
- A61F2230/0054—V-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
- A61F2250/0003—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
Landscapes
- Health & Medical Sciences (AREA)
- Gastroenterology & Hepatology (AREA)
- Pulmonology (AREA)
- Cardiology (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Transplantation (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic 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)
- Medicines Containing Plant Substances (AREA)
- Cosmetics (AREA)
Description
本発明は、血管の開存性を維持し、大動脈瘤の治療を行うための管状人工器官と、他の体内通路における開存性を維持するための導管とに関する。なお、管状人工器官には、グラフトやステントグラフト等が含まれるが、これらに限定されるものではない。
従来技術においては、大動脈瘤(AAA)を治療するために、血管内人工器官を用いることが知られている。このような治療には、異常部分をバイパスするために、病変した血管内にステント又はステントグラフトを植込む方法が含まれる。動脈瘤とは、動脈壁の拡張により形成される嚢である。この嚢は、先天的なものである場合もあるが、多くの場合は病気により発生するものであり、また、時として、外傷により発生するものである。図1において、動脈瘤Aの嚢1は、大動脈AAの拡張部分2として定義される。血液や他の塞栓材料が嚢1内に集まると、治療を受けない場合、血圧により動脈瘤Aが破裂して内出血を引き起こすことがある。
従来技術における問題点を解決するために、本発明は、管状部材と、同管状部材の一部に対して密封される外カバーとを備え、管状部材と外カバーの間にポケットが形成される管状をなす人工器官を提供する。充填材は、好ましくはほぼ非圧縮性の物質であり、ポケットに配置されて、外カバーの一部が管状部材から拡張するようにさせる。本発明の一特徴として、人工器官は、血管内人工器官であってもよい。好都合なことに、充填されたポケットを、I型の内部漏出を防止するために、血管壁に対するシールとして使用することができる。ポケットは環状をなしており、充填材で充填されたポケット上にはシールリングが形成されることが好ましい。本発明は、部分的に閉塞している血管(例えば石灰化した動脈)及び/又は不規則な断面形状の(例えばネック部が角度を有する)血管のシーリングに特に有益である。
管状人工器官は、血管内人工器官として用いてもよく、食道、気管、結腸、胆道、尿路、前立腺、脳といった体内通路の開存性を維持するための他の用途に用いてもよい。
本発明のこれらの特徴及び他の特徴については、以下の詳細な説明と添付の図面に基づく考察により、より理解されるであろう。
図2には、第1実施例における、符号10にて示される血管内人工器官が示される。本願では血管内人工器官について説明するが、既に指摘したように、人工器官は他の用途において使用されるものであってもよい。人工器官10は、通常、管状部材12と、管状部材12の一部に対して密封される外カバー14とを備え、管状部材12と外カバー14との間には、ポケット16が形成される。好ましくはほぼ非圧縮性の充填材18が、ポケット16を少なくとも部分的に充填するように、ポケット16内に配置されて、ポケット16が管状部材12から拡張するようにされる。ポケット16が少なくとも部分的に充填材18で充填されている状態で、充填されたポケット16が血管壁の一部を圧迫することにより、血管壁に対するシールとして機能させるようにしてもよい。その結果として、このシールを用いることにより、I型の内部漏出の発生率を低く抑えることができる。
Claims (24)
- 管状部材と、管状部材の一部に対して密封される外カバーとを備え、管状部材と外カバーとの間には、所定の充填材を内包するようにポケットが設けられ、同充填材が外カバーを透過しないように構成される管状人工器官において、
外カバーは、ポケット内に配される治療薬に対して透過性であることを特徴とする人工器官。 - 前記管状部材がグラフトである請求項1に記載の人工器官。
- 前記管状部材がステントグラフトである請求項1に記載の人工器官。
- 前記ステントが拡張可能である請求項3に記載の人工器官。
- 前記ステントが自己拡張型である請求項4に記載の人工器官。
- 前記管状部材が前記所定の充填材を透過させない請求項1に記載の人工器官。
- 前記所定の充填材がほぼ非圧縮性である請求項1に記載の人工器官。
- 前記所定の充填材が流体である請求項1に記載の人工器官。
- 前記所定の充填材が半固体状をなす請求項1に記載の人工器官。
- 前記ポケットが拡張可能である請求項1に記載の人工器官。
- 前記外カバーが伸張可能な材料で形成される請求項10に記載の人工器官。
- 前記外カバーが前記ポケットの周囲においてプリーツを形成する請求項10に記載の人工器官。
- 前記ポケットに連通する流体導管をさらに備える請求項1に記載の人工器官。
- 前記流体導管が通路を介してポケットに連通される請求項13に記載の人工器官。
- 前記管状部材が第1の端部を有し、前記ポケットが同第1の端部近傍に配置される請求項1に記載の人工器官。
- 前記ポケットが環状をなす請求項1に記載の人工器官。
- 前記人工器官が血管内人工器官である請求項1に記載の人工器官。
- 前記充填材が前記ポケット内に配される請求項1に記載の人工器官。
- 前記充填材が液体である請求項18に記載の人工器官。
- 前記充填材が前記ポケットをほぼ充填する請求項18に記載の人工器官。
- 前記ポケットが前記充填材により少なくとも部分的に充填され、前記外カバーの少なくとも一部が前記管状部材から拡張する請求項18に記載の人工器官。
- 前記ポケットが、少なくとも部分的に血管壁に接触するように、前記充填材で十分に充填される請求項18に記載の人工器官。
- 前記ポケットが螺旋状をなす請求項18に記載の人工器官。
- 前記充填材が、ハイドロゲル、水分に反応するウレタン、シアノアクリレートから選択される請求項18に記載の人工器官。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09/978,383 US7192441B2 (en) | 2001-10-16 | 2001-10-16 | Aortic artery aneurysm endovascular prosthesis |
PCT/US2002/030696 WO2003032869A1 (en) | 2001-10-16 | 2002-09-26 | Aortic artery aneurysm endovascular prosthesis |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2005505380A JP2005505380A (ja) | 2005-02-24 |
JP4294480B2 true JP4294480B2 (ja) | 2009-07-15 |
Family
ID=25526038
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2003535676A Expired - Fee Related JP4294480B2 (ja) | 2001-10-16 | 2002-09-26 | 大動脈瘤用血管内人工器官 |
Country Status (8)
Country | Link |
---|---|
US (1) | US7192441B2 (ja) |
EP (1) | EP1435875B1 (ja) |
JP (1) | JP4294480B2 (ja) |
AT (1) | ATE413149T1 (ja) |
CA (1) | CA2463643C (ja) |
DE (1) | DE60229762D1 (ja) |
ES (1) | ES2316617T3 (ja) |
WO (1) | WO2003032869A1 (ja) |
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US7192441B2 (en) | 2007-03-20 |
ES2316617T3 (es) | 2009-04-16 |
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