JP4522259B2 - 連続心臓弁支持フレームおよび製造方法 - Google Patents
連続心臓弁支持フレームおよび製造方法 Download PDFInfo
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- JP4522259B2 JP4522259B2 JP2004537874A JP2004537874A JP4522259B2 JP 4522259 B2 JP4522259 B2 JP 4522259B2 JP 2004537874 A JP2004537874 A JP 2004537874A JP 2004537874 A JP2004537874 A JP 2004537874A JP 4522259 B2 JP4522259 B2 JP 4522259B2
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Images
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
- A61F2/24—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
- 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
- A61F2/2412—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
- A61F2/2415—Manufacturing methods
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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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y10T29/49885—Assembling or joining with coating before or during assembling
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
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- Y10T29/49904—Assembling a subassembly, then assembling with a second subassembly
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
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Landscapes
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Cardiology (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Transplantation (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)
- Manufacturing & Machinery (AREA)
- Prostheses (AREA)
- Forging (AREA)
Description
本発明は、概して、医療デバイスに関し、そしてより具体的には、心臓弁において使用するための連続3次元支持フレームに関し、そしてそのような支持フレームを形成するための装置に関する。
2つの主要な型の心臓弁置換または心臓弁プロテーゼが、公知である。一方の型は、機械型心臓弁であり、これは、一方向血流を提供するために、ボールと、ケージ配置または旋回機械閉鎖とを使用する。もう一方は、組織型弁または「生体人工」弁であり、これは、天然のヒト心臓弁におけるリーフレットとかなり類似して機能する天然組織リーフレットを用いて構築される。すなわち、それらのリーフレットは、互いに対して密封して一方向血流を確保するような交連(commissure)を形成する可撓性リーフレットの自然の作用を模倣する。組織弁において、異種移植片弁全体(例えば、ブタ)または複数の異種移植片リーフレット(例えば、ウシ心膜)は、周囲のステント構造内に取り付けられた組織リーフレット閉塞表面を提供する。このような可撓性リーフレットを、ポリマーなどを用いて模倣するためのいくつかの試みが、なされた。これらの設計は、本発明の目的のための生体人工弁とグループ分けされ得る。
本発明は、従来の接続された支持フレームまたはワイヤフォームに関連する多数の欠点を、継ぎ目のない連続する一定長さの材料がそのフレームの周囲のあらゆる非均一性を排除する点で、解決する。その材料は、超弾性材料であり得、その結果、その材料は、周囲の心臓組織の動的拍動に伴って移動し得る高度に可撓性の弁を提供する。ある特に有用な実施形態において、その弁は、上行大動脈の上に移植されてその上行大動脈とともに拡張および収縮し得るように、構築される。本発明はまた、支持フレームを形成するためのいくつかの新規な方法を提供する。
心臓弁支持フレームの望ましい形状を有限要素プログラム中に入力して、3次元支持フレームモデルを得る工程;
この支持フレームモデルに対する力をシミュレートして、この支持フレームモデルに2次元パターンを呈させる工程;および
この2次元パターンの形状を使用して、弾性材料シートから2次元ブランクを形成する工程;
を包含する。
本発明は、本明細書中に記載され添付の図面に示されるような、改良された支持フレーム、形成装置、および方法を提供する。
以下は、図5の2次元ブランク100を生じ、その後、3次元支持フレームを生じる、製造工程の好ましい順番を説明する。この製造順序は、超弾性材料(好ましくは、ニチノール(NITINOL))から作製された支持フレームブランク100のために特に設計され、図10のフローチャートにおいて観察され得る。従来の単なる弾性金属についての同様のプロセスもまた、下記に記載される。図10は、フローチャート形式の例示的製造プロセス全体の概要である。
Claims (10)
- 心臓弁支持フレームを形成する方法であって、
心臓弁支持フレームを提供する工程であって、ここで、該心臓弁支持フレームは、3つの心臓弁膜尖と3つの交連とを備える、波打つ形状を有する、工程;
該心臓弁支持フレームを電解研磨する工程であって、該心臓弁支持フレームを導電性流体浴中に浸漬すること、アノードおよびカソードを提供すること、および該アノードと該カソードとの間に電流を流して、該心臓弁支持フレームを電解研磨すること、を包含する工程;
該導電性流体浴中で、該心臓弁支持フレームを、該波打つ形状の周囲の3つの点で保持する工程;ならびに
該電解研磨プロセスの間に該心臓弁支持フレームを定期的に再配置する工程;を包含する、方法。 - 請求項1に記載の方法であって、前記心臓弁支持フレームは、金属性であり、かつ該心臓弁支持フレームは、直線の断面を有する、方法。
- 請求項1に記載の方法であって、前記心臓弁支持フレームは、ニチノールから作製されている、方法。
- 請求項1に記載の方法であって、
前記電解研磨する工程の前に、まず前記心臓弁支持フレームの外部表面をマイクロブラスト加工する工程をさらに包含する、方法。 - 請求項1に記載の方法であって、前記アノードを提供する工程は、前記心臓弁支持フレームの周囲に、前記導電性流体浴中にプレートアノードを配置する工程を包含する、方法。
- 請求項1に記載の方法であって、前記導電性流体浴は、硝酸およびメタノールを含む、方法。
- 請求項1に記載の方法であって、前記導電性流体浴は、約−28℃〜−32℃の間の温度にて維持される、方法。
- 請求項1に記載の方法であって、前記導電性流体浴は、23℃にて約140マイクロジーメンス〜190マイクロジーメンスの間の導電率レベルにて維持される、方法。
- 請求項1に記載の方法であって、前記電流は、約9V〜10Vの間の電圧にて流れる、方法。
- 請求項1に記載の方法であって、前記定期的に再配置する工程は、前記心臓弁支持フレームを、初期位置から120°ずつ2回回転する工程を包含する、方法。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US25165102A | 2002-09-20 | 2002-09-20 | |
PCT/US2003/029138 WO2004026173A2 (en) | 2002-09-20 | 2003-09-16 | Continuous heart valve support frame and method of manufacture |
Publications (3)
Publication Number | Publication Date |
---|---|
JP2006500104A JP2006500104A (ja) | 2006-01-05 |
JP2006500104A5 JP2006500104A5 (ja) | 2009-09-17 |
JP4522259B2 true JP4522259B2 (ja) | 2010-08-11 |
Family
ID=32029006
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2004537874A Expired - Fee Related JP4522259B2 (ja) | 2002-09-20 | 2003-09-16 | 連続心臓弁支持フレームおよび製造方法 |
Country Status (7)
Country | Link |
---|---|
US (2) | US7137184B2 (ja) |
EP (1) | EP1539047B1 (ja) |
JP (1) | JP4522259B2 (ja) |
AU (1) | AU2003267250A1 (ja) |
BR (1) | BR0314642A (ja) |
CA (1) | CA2496643C (ja) |
WO (1) | WO2004026173A2 (ja) |
Families Citing this family (441)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0850607A1 (en) | 1996-12-31 | 1998-07-01 | Cordis Corporation | Valve prosthesis for implantation in body channels |
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- 2003-09-16 AU AU2003267250A patent/AU2003267250A1/en not_active Abandoned
- 2003-09-16 BR BR0314642-1A patent/BR0314642A/pt not_active Application Discontinuation
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2005
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CA2496643C (en) | 2011-04-05 |
WO2004026173A2 (en) | 2004-04-01 |
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US20040078950A1 (en) | 2004-04-29 |
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