JP4384978B2 - 後部湾曲を有する僧帽弁の環状形成リング - Google Patents
後部湾曲を有する僧帽弁の環状形成リング Download PDFInfo
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- JP4384978B2 JP4384978B2 JP2004519963A JP2004519963A JP4384978B2 JP 4384978 B2 JP4384978 B2 JP 4384978B2 JP 2004519963 A JP2004519963 A JP 2004519963A JP 2004519963 A JP2004519963 A JP 2004519963A JP 4384978 B2 JP4384978 B2 JP 4384978B2
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Images
Classifications
-
- 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
- A61F2/2442—Annuloplasty rings or inserts for correcting the valve shape; Implants for improving the function of a native heart valve
- A61F2/2445—Annuloplasty rings in direct contact with the valve annulus
- A61F2/2448—D-shaped rings
-
- 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
- A61F2250/0014—Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof having different values of a given property or geometrical feature, e.g. mechanical property or material property, at different locations within the same prosthesis
- A61F2250/0018—Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof having different values of a given property or geometrical feature, e.g. mechanical property or material property, at different locations within the same prosthesis differing in elasticity, stiffness or compressibility
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- Health & Medical Sciences (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)
- Surgical Instruments (AREA)
Description
環状形成リングは、長年にわたって、弁の機能を減少する僧帽弁逆流および他の状況を修正するために、さまざまな形状および構成において開発されてきた。例えば、カルペンティエル(Carpentier)らは、米国特許第4,055,861号において、その一つは閉じ(またはD形の)、他のものは開いている(またはC形の)心臓弁のための二つ半剛性支持体を開示する。閉構成において、リングは、通常、前後部平面について対称で、凸面後側部およびほぼ真っ直ぐな前側部を有する。米国特許第5,104,407号、5,201,880および5,607,471は、全て、それらの前側部にわずかに上方へ曲げられた閉環状形成リングを開示する。僧帽弁の環MAの前部局面が繊維状で、従って、比較的柔軟性がない(少なくとも後部局面と比較して)ので、各々のリングの前側部の上方へのカーブはより密接にそのリングを僧帽弁の環の解剖学的輪郭に従わせ、そして、そのことが環の過度の変形を減らしている。
本発明は、その後部局面が異常に下方へ垂下するように、病的状態がある僧帽弁環の移植のために環状形成リングを提供する。環状形成リングは、前部セクションおよび後部セクションを有する丸いリング体を含む。リング体は、上方への方向および下方への方向(僧帽弁環を通した血流の方向に対応する下方への方向)を規定する中心流れ軸について配向される。リング体の後部セクションは、中心流れ軸と直交する平面から下方へ曲がる。
添付の図は、本発明の環状形成リングのいくつかの例示的な実施形態を例示する。それらは、それは連続して、前側部、後側部および左右の側を有すると記載され得る。側部の全ては、それらの間で突然の移行を示すために、特別な境界なしで、ほぼ曲線形である。むしろ、隣接した側部間のなめらかな移行セクションは、リングにほぼ丸い(例えば、卵形の)形状を与える曲線の接続を提供する。
Claims (16)
- 僧帽弁環の移植のための環状形成リング(30、50)であって、
該僧帽弁環の前部局面上に移植されるように適合された前部セクション(34、52、66、72)および該僧帽弁環の後部局面上に移植されるように適合された後部セクション(36、54、64、74)を有する丸いリング体(60)を有し;
ここで、該リング体(60)は中心流れ軸の周りに配向され、該流れ軸は、上方への方向および下方への方向を規定し、該下方への方向は該僧帽弁環を通る血流の方向に対応し、ここで、該流れ軸に沿って観察される平面図において、該リング体(60)が短軸と直交する長軸を備えたほぼ卵形状を規定し、該短軸が該前部セクションおよび該後部セクションの両方を二分し;
該後部セクション(36、54、64、74)において、該リング体(60)は中心流れ軸と直交する平面から下方へ曲がり、そして該下方への曲がり(62)が該短軸から離れて該後部セクションに中心があり、そして隣接するリング体セクションへの滑らかな曲線遷移を示すことを特徴とする、環状形成リング。 - 前記後部セクション(36、54、64、74)において、前記リング体(60)が、前記下方への曲がり(62)が該下方への曲がりの最下位点に至るようにはじまる該リング体(60)周囲の点から前記流れ軸に沿って測定されるとき、約2〜15mmの間で下方へ曲がる、請求項1に記載の環状形成リング。
- 前記リング体(60)が、約4〜8mmの間で下方へ曲がる、請求項2に記載の環状形成リング。
- 前記リング体(60)の曲がり(62)が、前記後部セクション(36、54、64、74)において、流入視野からみたとき該リング体の後部中央側に向いて中心がある、請求項1に記載の環状形成リング。
- 前記後部セクション(36、54、64、74)における曲がり(62)が、前記リング体(60)の長軸全体の約20%だけ後部中央側に向いて中心がある、請求項4に記載の環状形成リング。
- 前記後部セクション(36、54、64、74)における曲がりが、時計位置で、前側部で12:00に中心があり、そして該曲がりが3:00と6:00との間に中心がある、請求項4に記載の環状形成リング。
- 前記リング体(60)が、該リング体における曲がりが手で再形状化され得るように、展性材料から作製される、請求項1に記載の環状形成リング。
- 前記リング体(60)が、各鼓動サイクルの全体にわたって心臓の筋肉によって与えられるストレスに対抗して、その後部の曲がりを保持する半硬質材料から作製される、請求項1に記載の環状形成リング。
- 前記前部セクション(34、52、66、72)において、前記リング体(60)が、隣接する三角標識から上方へ曲がる、請求項1に記載の環状形成リング。
- 前記リング体(60)が、同心で配置される複数のリング要素(70a、70b、70c、70d)を備える、請求項1に記載の環状形成リング。
- 前記各リング要素の間にポリマーストリップを更に備える、請求項10に記載の環状形成リング。
- 前記リング要素は、前記流れ軸と直交する次元においてより実質的に大きい流れ軸の高さを有するバンド(70a、70b、70c、70d)を備える、請求項10に記載の環状形成リング。
- 前記リング要素が様々な高さを有し、そのため前記リング体(60)が該リング体の剰余周辺でより、前記後部セクション(36、54、64、74)においてより可撓性である、請求項12に記載の環状形成リング。
- 前記リング体(60)が、前記後部セクション(36、54、64、74)を除いて実質的に平坦である、請求項1に記載の環状形成リング。
- 前記リング体(60)が、前記後部セクション(36、54、64、74)において前記下方の曲がりのいずれかの側に2つの上方の曲がりを備える、請求項1に記載の環状形成リング。
- 前記リング体(60)が、前記下方への曲がり(62)が該下方への曲がりの最下位点に至るようにはじまる該リング体周囲の点から前記流れ軸に沿って測定されるとき、約2〜15mmの間で下方へ曲がる、請求項15に記載の環状形成リング。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/192,516 US6858039B2 (en) | 2002-07-08 | 2002-07-08 | Mitral valve annuloplasty ring having a posterior bow |
PCT/US2003/021208 WO2004004607A1 (en) | 2002-07-08 | 2003-07-03 | Mitral valve annuloplasty ring having a posterior bow |
Publications (3)
Publication Number | Publication Date |
---|---|
JP2005532119A JP2005532119A (ja) | 2005-10-27 |
JP2005532119A5 JP2005532119A5 (ja) | 2006-08-17 |
JP4384978B2 true JP4384978B2 (ja) | 2009-12-16 |
Family
ID=30000029
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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JP2004519963A Expired - Lifetime JP4384978B2 (ja) | 2002-07-08 | 2003-07-03 | 後部湾曲を有する僧帽弁の環状形成リング |
Country Status (9)
Country | Link |
---|---|
US (1) | US6858039B2 (ja) |
EP (1) | EP1519695B1 (ja) |
JP (1) | JP4384978B2 (ja) |
AT (1) | ATE339934T1 (ja) |
AU (1) | AU2003248833B2 (ja) |
BR (1) | BR0312502B1 (ja) |
CA (1) | CA2489368C (ja) |
DE (1) | DE60308523T2 (ja) |
WO (1) | WO2004004607A1 (ja) |
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AU2003248833B2 (en) | 2008-12-04 |
US20040006384A1 (en) | 2004-01-08 |
BR0312502B1 (pt) | 2013-04-30 |
EP1519695B1 (en) | 2006-09-20 |
DE60308523T2 (de) | 2007-02-01 |
ATE339934T1 (de) | 2006-10-15 |
BR0312502A (pt) | 2005-04-12 |
CA2489368C (en) | 2011-08-23 |
WO2004004607A1 (en) | 2004-01-15 |
EP1519695A1 (en) | 2005-04-06 |
CA2489368A1 (en) | 2004-01-15 |
DE60308523D1 (de) | 2006-11-02 |
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