JP2003524504A - 移植可能な人工心臓弁の固定システム - Google Patents
移植可能な人工心臓弁の固定システムInfo
- Publication number
- JP2003524504A JP2003524504A JP2001563037A JP2001563037A JP2003524504A JP 2003524504 A JP2003524504 A JP 2003524504A JP 2001563037 A JP2001563037 A JP 2001563037A JP 2001563037 A JP2001563037 A JP 2001563037A JP 2003524504 A JP2003524504 A JP 2003524504A
- Authority
- JP
- Japan
- Prior art keywords
- hook
- heart valve
- fixation system
- artificial heart
- ridge
- 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.)
- Granted
Links
- 210000003709 heart valve Anatomy 0.000 title claims abstract description 55
- 210000000709 aorta Anatomy 0.000 claims abstract description 20
- 239000000463 material Substances 0.000 claims abstract description 5
- 229910001285 shape-memory alloy Inorganic materials 0.000 claims description 16
- 239000013536 elastomeric material Substances 0.000 claims description 2
- 238000001356 surgical procedure Methods 0.000 abstract 1
- 238000002513 implantation Methods 0.000 description 4
- 238000001816 cooling Methods 0.000 description 3
- 229910001000 nickel titanium Inorganic materials 0.000 description 3
- 230000007704 transition Effects 0.000 description 3
- 241000950314 Figura Species 0.000 description 2
- HLXZNVUGXRDIFK-UHFFFAOYSA-N nickel titanium Chemical compound [Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni] HLXZNVUGXRDIFK-UHFFFAOYSA-N 0.000 description 2
- CHBRHODLKOZEPZ-UHFFFAOYSA-N Clotiazepam Chemical compound S1C(CC)=CC2=C1N(C)C(=O)CN=C2C1=CC=CC=C1Cl CHBRHODLKOZEPZ-UHFFFAOYSA-N 0.000 description 1
- 101100315260 Picea mariana SB09 gene Proteins 0.000 description 1
- 230000017531 blood circulation Effects 0.000 description 1
- 230000036772 blood pressure Effects 0.000 description 1
- 210000000038 chest Anatomy 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000011343 solid material Substances 0.000 description 1
- 238000011477 surgical intervention Methods 0.000 description 1
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
- A61F2/2412—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
- 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
- A61F2220/0008—Fixation appliances for connecting prostheses to the body
-
- 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
- A61F2220/0008—Fixation appliances for connecting prostheses to the body
- A61F2220/0016—Fixation appliances for connecting prostheses to the body with sharp anchoring protrusions, e.g. barbs, pins, spikes
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)
- Prostheses (AREA)
- Materials For Medical Uses (AREA)
Abstract
Description
に開くことが必要であったが、本発明の人工心臓弁は、大きな外科手術をするこ
となく、導入のために大動脈を介して移植可能である。
、人工心臓弁を大動脈を通じて心臓に導き、展開して引き伸ばす操作の後にそこ
に固定するように移植していた。
ent)と呼ばれるものが記載されている。このステントは、本質的に、ワイヤ型
の形状記憶合金(金属)から構成され、格子構造内の円筒構造で表される。この
形状記憶合金は、37℃より低い温度で折り畳むことができ、カテーテルを用い
て大動脈を介して心臓に導入される。そこで、冷却システムのスイッチが切られ
、温度が約37℃になると、記憶した形状をとり、それぞれ展開した状態で、大
動脈壁内側にしっかりとフィットする。
開した状態のとき、大動脈の内側にしっかりとフィットして安全に支持されるよ
うな寸法にするために、このようなステントを小さくして折り畳むのは今のとこ
ろ困難である。
切な従来の形状記憶合金(たとえばニチノール:ニッケルとチタンの合金)から
構成された固定支持体を製造するには、問題があり、不当な高い製造費が必要と
なる。このようなボディは、たいてい、レーザービーム切断により固体材料を切
断したものだからである。
こに固定される可能性を提案することである。
された特徴から、本発明のより好ましい実施の形態および改良が得られる。
弁の交連(commissures)、または人造の人工心臓弁に直接フック型要素が取り
付けられる。これらのフックは、それぞれ、人工心臓弁材料を通して外側の方向
に導かれ、移植された状態では大動脈壁内に突き通されて大動脈壁を貫き、これ
により人工心臓弁を大動脈壁に安全に固定することができる。
。
工心臓弁材料を突き通すようにすれば、よりシンプルでより容量を小さくするこ
とができる。フック型要素はリッジまたはベース要素上に形成するのが適当で、
フック型要素のフックだけが人工心臓弁から突出し、それぞれ個々の大きさの残
りの部分は人工心臓弁内に保持されるようにすることができる。
の上に少なくとも二つのフック型要素を設計することができる。
断面領域により人工心臓弁材料に孔が空くのを避けることができる。
ピン型に形成することができる。その場合、大動脈壁内で固定するための一つま
たは複数の突起(かぎ)がピン型部分に形成され、その突起は大動脈壁に押し入
れられた後にその中または後ろで大動脈壁に連結する。
うに形状記憶合金に記憶され、そのため、大動脈壁への切り込みと貫通を容易に
行うことができる。
これらのリッジは、移植された状態で、大動脈の長軸方向に整列するようにして
人工心臓弁の交連に固定することができる。
めに、これらのリッジが大動脈の内部の輪郭に適合するからである。さらに、ら
せん形状であるために、大動脈の内壁の多くの領域を覆うことができ、厳密さの
度合いが増し、リッジはフックにより大動脈に直接しっかりフィットする。
、これらは分散された状態で交連上に配置され、らせん形状の輪郭または2つの
逆方向に屈曲したスパイラル形状の輪郭とすることができる。
人工心臓弁の交連の長さと同じ長さを有することができる。
ク型要素は形状記憶合金により構成するのが好ましい。形状記憶合金は、導入段
階ではフック型要素が平らに位置し、導入の抵抗および容量を小さくし、移植の
段階でのみ所望の形状でフックを立てて大動脈壁に固定するようにする。
で、フック型要素がそれぞれ人工心臓弁から突出して大動脈壁内に突き通り、貫
く。
、大動脈の内部の状態や心臓付近の血圧や流量の状態をも考慮すると、本発明の
固定システムの確実な固定を得ることができる。
れ、形状記憶合金を用いて、このような位置が記憶される。これにより、転移温
度に届き転移温度を超えたときに、それぞれ大動脈壁内で隣接するフック型要素
の締め付けがおこる。
固定され得る。これも、大動脈を介した導入段階では抑えられ、より小さい容量
を必要とする。この部材としては、たとえば適切なプラスチックまたはゴムなど
のエラストマー材料が場合によりらせん状の弾性体とともに、またはらせん状の
弾性体だけ、または形状記憶合金を用いることができる。
が形成されたカテーテルの手法で大動脈に導入され得る。ここで、このメカニズ
ムは、人工心臓弁を展開し、所望の位置に配置された人工心臓弁をはずすように
できる。
ステムとともに提供される人工心臓弁は、ぽんと放り出され、大動脈中のこの位
置に導入される。移植する位置に届くとバルーンが加圧され、人工心臓弁は、大
動脈壁に逆らってフック型要素とともに押され、それからフックが大動脈壁の内
側に固定される。ここで、形状記憶合金を用いる場合、バルーンカテーテルは必
要とされる冷却にも用いることができる。
ジがそれぞれ、バルーンの伸縮性およびそれぞれ適切に設計されたリッジおよび
ベース要素の輪郭により、大動脈を通過する段階のときに安全に保持され、この
保持が解放されるように適切に輪郭づけることができる。
もまた形状記憶合金からなり、本発明の固定システムとともに人工心臓弁の固定
を確実にする。
大動脈壁に好ましくない傷が付くのを避けるために、また必要とされる冷却のた
めに適切な熱的遮断を確実にするために、人工心臓弁を包むのが適切である。移
植位置に届いた後この囲みは破られ、固定を解放するメカニズム(dislocking)
が活性化される。そして、再度、大動脈からカテーテルに沿って取り除かれる。
場合、これは、人工心臓弁の外輪の領域で人工心臓弁に取り付けられた環状要素
として設計することができる。このような環状要素は、移植された人工心臓弁の
安定性を確保し、シールする機能を高めることができる。
は、リッジ3上に形成されたフック型要素2を有し、このような各リッジ3は人
工心臓弁1の交連に配置され、そこに取り付けられる。
ニチノールの名称で市販されている形状記憶合金により構成される。取り付けの
ため、リッジ3は、内側から人工心臓弁1に導入され、単に人工心臓弁1の交連
を通して押され、その交連を貫通する。
るとその形状になる。しかし、人工心臓弁1の導入段階では、フック型要素2は
、導入が容易に行え、大動脈壁の損傷が避けられるように、比較的少容量を要し
、ほとんど突出しないように、リッジ3の長軸の方向にできるだけ遠くほぼ90
°に傾けることができる。
成されている。全部で、少なくとも15個のフック型要素が用いられている。
に複数のフック型要素2を含む複数のリッジ3が人工心臓弁1の一つの交連に、
取り付けられることもできる。
とができる。ここで、二つのこのようなリッジ3は、互いに反対側に傾くように
することができる。
り付けることができる。
突起を形成することができる。
Claims (15)
- 【請求項1】 移植可能な人工心臓弁の固定システムであって、 人工心臓弁(1)の交連に人工心臓弁材料を通して外側の方向に導かれたフッ
ク型要素(2)が固定されたことを特徴とする固定システム。 - 【請求項2】 請求項1に記載の固定システムにおいて、 付加的なフック型要素(2)が前記人工心臓弁(1)の外輪に固定されたこと
を特徴とする固定システム。 - 【請求項3】 請求項1または2に記載の固定システムにおいて、 前記フック型要素(2)は、前記人工心臓弁(1)に縫いつけられたことを特
徴とする固定システム。 - 【請求項4】 請求項1または2に記載の固定システムにおいて、 前記フック型要素(2)は前記人工心臓弁(1)を突き抜け、リッジ(3)ま
たはベース部材によって内側に支持されたことを特徴とする固定システム。 - 【請求項5】 請求項1乃至4いずれかに記載の固定システムであって、 複数のフック型要素(2)が一つの共通のリッジ(3)上に配置され、少なく
とも一つの前記リッジ(3)が一つの交連に固定されたことを特徴とする固定シ
ステム。 - 【請求項6】 請求項5に記載の固定システムにおいて、 少なくとも二つの前記フック型要素(2)がそれぞれ前記一つのリッジ(3)
上に配置されたことを特徴とする固定システム。 - 【請求項7】 請求項1乃至6いずれかに記載の固定システムにおいて、 前記リッジ(3)は、大動脈の長軸方向に配列されたことを特徴とする固定シ
ステム。 - 【請求項8】 請求項1乃至6いずれかに記載の固定システムにおいて、 前記リッジ(3)は、らせん形状に設計されたことを特徴とする固定システム
。 - 【請求項9】 請求項1乃至8いずれかに記載の固定システムにおいて、 前記リッジ(3)は少なくとも前記交連と同じ長さであることを特徴とする固
定システム。 - 【請求項10】 請求項1乃至9いずれかに記載の固定システムにおいて、 少なくとも前記フック型要素(2)は、形状記憶合金により構成されたことを
特徴とする固定システム。 - 【請求項11】 請求項1乃至10いずれかに記載の固定システムにおいて
、 大動脈壁内に固定するために、前記フック型要素(2)は、展開した状態で少
なくとも2mmの有効な高さを有し、これらのフック型要素(2)は、前記人工
心臓弁(1)から突出することを特徴とする固定システム。 - 【請求項12】 請求項1乃至11いずれかに記載の固定システムにおいて
、 前記フック型要素(2)は、その上に突起が設けられたピン形状に設計された
ことを特徴とする固定システム。 - 【請求項13】 請求項1乃至12いずれかに記載の固定システムにおいて
、 前記フック型要素(2)の前記フックは、様々な方向に曲げられたことを特徴
とする固定システム。 - 【請求項14】 請求項1乃至13いずれかに記載の固定システムにおいて
、 前記外輪の領域で、前記人工心臓弁(1)の内側に一つの環状要素が固定され
たことを特徴とする固定システム。 - 【請求項15】 請求項14に記載の固定システムにおいて、 前記環状要素はエラストマー材料または形状記憶合金により構成されたことを
特徴とする固定システム。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10010073A DE10010073B4 (de) | 2000-02-28 | 2000-02-28 | Verankerung für implantierbare Herzklappenprothesen |
DE10010073.2 | 2000-02-28 | ||
PCT/DE2001/000836 WO2001064137A1 (de) | 2000-02-28 | 2001-02-28 | Verankerung für implantierbare herzklappenprothesen |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2003524504A true JP2003524504A (ja) | 2003-08-19 |
JP4246433B2 JP4246433B2 (ja) | 2009-04-02 |
Family
ID=7633174
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2001563037A Expired - Fee Related JP4246433B2 (ja) | 2000-02-28 | 2001-02-28 | 移植可能な人工心臓弁の固定システム |
Country Status (10)
Country | Link |
---|---|
US (2) | US20030149476A1 (ja) |
EP (1) | EP1259193B1 (ja) |
JP (1) | JP4246433B2 (ja) |
AT (1) | ATE488199T1 (ja) |
CY (1) | CY1111106T1 (ja) |
DE (2) | DE10010073B4 (ja) |
DK (1) | DK1259193T3 (ja) |
ES (1) | ES2353733T3 (ja) |
PT (1) | PT1259193E (ja) |
WO (1) | WO2001064137A1 (ja) |
Cited By (28)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2010516333A (ja) * | 2007-01-19 | 2010-05-20 | ガイデッド デリバリー システムズ, インコーポレイテッド | 心臓組織の修復のための方法およびデバイス |
US7896915B2 (en) | 2007-04-13 | 2011-03-01 | Jenavalve Technology, Inc. | Medical device for treating a heart valve insufficiency |
US7896913B2 (en) | 2000-02-28 | 2011-03-01 | Jenavalve Technology, Inc. | Anchoring system for implantable heart valve prostheses |
US8062355B2 (en) | 2005-11-04 | 2011-11-22 | Jenavalve Technology, Inc. | Self-expandable medical instrument for treating defects in a patient's heart |
US8092521B2 (en) | 2005-10-28 | 2012-01-10 | Jenavalve Technology, Inc. | Device for the implantation and fixation of prosthetic valves |
US8317858B2 (en) | 2008-02-26 | 2012-11-27 | Jenavalve Technology, Inc. | Stent for the positioning and anchoring of a valvular prosthesis in an implantation site in the heart of a patient |
US8398704B2 (en) | 2008-02-26 | 2013-03-19 | Jenavalve Technology, Inc. | Stent for the positioning and anchoring of a valvular prosthesis in an implantation site in the heart of a patient |
US8465540B2 (en) | 2008-02-26 | 2013-06-18 | Jenavalve Technology, Inc. | Stent for the positioning and anchoring of a valvular prosthesis |
US8468667B2 (en) | 2009-05-15 | 2013-06-25 | Jenavalve Technology, Inc. | Device for compressing a stent |
US8679174B2 (en) | 2005-01-20 | 2014-03-25 | JenaValve Technology, GmbH | Catheter for the transvascular implantation of prosthetic heart valves |
USRE45130E1 (en) | 2000-02-28 | 2014-09-09 | Jenavalve Technology Gmbh | Device for fastening and anchoring cardiac valve prostheses |
US9044318B2 (en) | 2008-02-26 | 2015-06-02 | Jenavalve Technology Gmbh | Stent for the positioning and anchoring of a valvular prosthesis |
US9138315B2 (en) | 2007-04-13 | 2015-09-22 | Jenavalve Technology Gmbh | Medical device for treating a heart valve insufficiency or stenosis |
US9168130B2 (en) | 2008-02-26 | 2015-10-27 | Jenavalve Technology Gmbh | Stent for the positioning and anchoring of a valvular prosthesis in an implantation site in the heart of a patient |
US9295551B2 (en) | 2007-04-13 | 2016-03-29 | Jenavalve Technology Gmbh | Methods of implanting an endoprosthesis |
US9510947B2 (en) | 2011-10-21 | 2016-12-06 | Jenavalve Technology, Inc. | Catheter system for introducing an expandable heart valve stent into the body of a patient |
US9597182B2 (en) | 2010-05-20 | 2017-03-21 | Jenavalve Technology Inc. | Catheter system for introducing an expandable stent into the body of a patient |
US9744031B2 (en) | 2010-05-25 | 2017-08-29 | Jenavalve Technology, Inc. | Prosthetic heart valve and endoprosthesis comprising a prosthetic heart valve and a stent |
US9839515B2 (en) | 2005-12-22 | 2017-12-12 | Symetis, SA | Stent-valves for valve replacement and associated methods and systems for surgery |
US9867694B2 (en) | 2013-08-30 | 2018-01-16 | Jenavalve Technology Inc. | Radially collapsible frame for a prosthetic valve and method for manufacturing such a frame |
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- 2000-02-28 DE DE10010073A patent/DE10010073B4/de not_active Expired - Fee Related
-
2001
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- 2001-02-28 DE DE50115708T patent/DE50115708D1/de not_active Expired - Lifetime
- 2001-02-28 AT AT01916903T patent/ATE488199T1/de active
- 2001-02-28 DK DK01916903.6T patent/DK1259193T3/da active
- 2001-02-28 US US10/204,918 patent/US20030149476A1/en not_active Abandoned
- 2001-02-28 PT PT01916903T patent/PT1259193E/pt unknown
- 2001-02-28 JP JP2001563037A patent/JP4246433B2/ja not_active Expired - Fee Related
- 2001-02-28 WO PCT/DE2001/000836 patent/WO2001064137A1/de active Application Filing
- 2001-02-28 ES ES01916903T patent/ES2353733T3/es not_active Expired - Lifetime
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- 2006-09-05 US US11/515,589 patent/US7896913B2/en not_active Expired - Fee Related
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Also Published As
Publication number | Publication date |
---|---|
WO2001064137A1 (de) | 2001-09-07 |
ES2353733T3 (es) | 2011-03-04 |
PT1259193E (pt) | 2011-01-13 |
US20030149476A1 (en) | 2003-08-07 |
US20070005129A1 (en) | 2007-01-04 |
ATE488199T1 (de) | 2010-12-15 |
DK1259193T3 (da) | 2011-01-31 |
DE50115708D1 (de) | 2010-12-30 |
EP1259193B1 (de) | 2010-11-17 |
DE10010073B4 (de) | 2005-12-22 |
DE10010073A1 (de) | 2001-09-27 |
JP4246433B2 (ja) | 2009-04-02 |
CY1111106T1 (el) | 2015-06-11 |
US7896913B2 (en) | 2011-03-01 |
EP1259193A1 (de) | 2002-11-27 |
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