JP7821205B2 - 人工心弁デバイス、システム、および方法 - Google Patents
人工心弁デバイス、システム、および方法Info
- Publication number
- JP7821205B2 JP7821205B2 JP2024002985A JP2024002985A JP7821205B2 JP 7821205 B2 JP7821205 B2 JP 7821205B2 JP 2024002985 A JP2024002985 A JP 2024002985A JP 2024002985 A JP2024002985 A JP 2024002985A JP 7821205 B2 JP7821205 B2 JP 7821205B2
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- JP
- Japan
- Prior art keywords
- valve
- framework
- prosthesis
- valve prosthesis
- anchor
- 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.)
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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
- A61F2/24—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
- A61F2/2409—Support rings therefor, e.g. for connecting valves to tissue
-
- 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
- A61F2/2427—Devices for manipulating or deploying heart valves during implantation
- A61F2/243—Deployment by mechanical expansion
- A61F2/2433—Deployment by mechanical expansion using balloon catheter
-
- 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
- A61F2/82—Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/86—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure
- A61F2/88—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure the wire-like elements formed as helical or spiral coils
-
- 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
- A61F2/82—Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/86—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure
- A61F2/90—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure characterised by a net-like or mesh-like structure
- A61F2/91—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure characterised by a net-like or mesh-like structure made from perforated sheets or tubes, e.g. perforated by laser cuts or etched holes
- A61F2/915—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure characterised by a net-like or mesh-like structure made from perforated sheets or tubes, e.g. perforated by laser cuts or etched holes with bands having a meander structure, adjacent bands being connected to each other
-
- 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
- A61F2/82—Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2002/825—Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents having longitudinal struts
-
- 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
- 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
- A61F2230/0004—Rounded shapes, e.g. with rounded corners
-
- 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
- A61F2230/0063—Three-dimensional shapes
- A61F2230/0067—Three-dimensional shapes conical
-
- 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
- A61F2230/0063—Three-dimensional shapes
- A61F2230/0091—Three-dimensional shapes helically-coiled or spirally-coiled, i.e. having a 2-D spiral cross-section
-
- 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
- A61F2250/0004—Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof adjustable
- A61F2250/001—Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof adjustable for adjusting a diameter
-
- 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
- A61F2250/0058—Additional features; Implant or prostheses properties not otherwise provided for
- A61F2250/006—Additional features; Implant or prostheses properties not otherwise provided for modular
- A61F2250/0063—Nested prosthetic parts
Landscapes
- Health & Medical Sciences (AREA)
- Cardiology (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (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)
- Mechanical Engineering (AREA)
- Prostheses (AREA)
Description
[0001]本出願は、あらゆる目的のためにその全体が本明細書に組み込まれている、Prosthetic Cardiac Valve Devices, Systems,
and Methodsと題される、2018年8月21日に出願した米国仮特許出願第62/720,853号(代理人整理番号41702-704.101)の利益を主張するものである。
参照による援用
[0002]本明細書で言及されるすべての刊行物および特許出願は、各々の個別の刊行物または特許出願を参照により組み込まれるものとして具体的にかつ個別に示す場合と同じ程度で参照により本明細書に組み込まれる。
このような弁4は適切に開かない。一部の弁4は随伴性の不全症および狭窄症を患う可能性もある。弁4を適切に機能させるのを妨げるBarlow病などの他の疾患が発症する可能性もある。これらの疾患は心臓拍出量を低下させ、より過酷に心臓2を働かせ、それにより心不全および腱索不全(chordae failure)のリスクを増大させる。
の僧帽弁などの人工心臓弁に関連する。
[0014]第1の態様で、患者の中の罹患した自然弁(native valve; 換言すれば、天然弁
)を置換するための心臓弁プロテーゼが提供される。心臓弁プロテーゼが、収縮可能および拡張可能であるフレーム構造と、フレーム構造の外側周縁部に接続されるアンカーとを有する。アンカーが自由端を有する螺旋ワイヤを備える。弁が、フレーム構造内にある弁セグメントをさらに有することができる。弁セグメントが生体適合性の一方向弁を有することができる。
[0017]いくつかの実施形態で、自由端が非外傷性先端部を備えることができる。例えば、自由端がボール先端部を備えることができる。
[0019]いくつかの実施形態で、アンカーが、螺旋ワイヤを備える第1の部分および別の部分を備えることができる。
[0022]いくつかの実施形態で、螺旋ワイヤが概略円錐台形形状を有することができる。螺旋ワイヤの自由端が円錐台形形状から径方向外側に延在することができる。
[0024]いくつかの実施形態で、フレーム構造が、経皮的な挿入のために大きさおよび寸法が決定される収縮状態と、患者の自然弁への移植のために大きさおよび寸法が決定される拡張状態とを有することができる。
[0027]いくつかの実施形態で、フレーム構造が概略管状の拡張形状を有することができる。
の直径が、拡張状態の外側周縁部の直径よりわずかに小さくてよい。
[0030]いくつかの実施形態で、フレーム構造が自己拡張式であってよい。
[0031]いくつかの実施形態で、弁セグメントの少なくとも一部分がフレーム構造の少なくとも一部分の中に配置され得る。
[0034]いくつかの実施形態で、螺旋ワイヤが第2の端部を備えることができ、第2の端部がフレーム構造に取り付けられる。螺旋ワイヤが、第2の端部の位置のみでフレーム構造に取り付けられ得る。
[0036]別の態様で、患者の罹患した自然弁を置換する方法が提供される。この方法が、弁プロテーゼを送達カテーテルの中に装填することであって、弁プロテーゼが、生体適合性の弁セグメントを担持する拡張可能なフレーム構造と、フレーム構造の外側周縁部に取り付けられるアンカーとを備え、アンカーが自由端を有するワイヤを備える、装填することと、自然弁の上方の標的位置まで弁プロテーゼを送達することと、自然弁を通して自然弁の後方の位置まで弁プロテーゼを挿入することと、弁の下方の腱索の少なくとも一部分の周りに自由端を巻き付けるようにワイヤを回転させることと、弁セグメントを有するフレーム構造を自然弁の中で拡張させることと、を含む。
[0039]いくつかの実施形態で、フレーム構造がバルーンにより拡張可能であってよい。フレーム構造を拡張させることが、フレーム構造内でバルーンを拡張させることを含むことができる。
[0042]いくつかの実施形態で、弁プロテーゼを挿入することが、自然弁の交連部を通るようにワイヤの自由端を案内することを含むことができる。いくつかの実施形態で、ワイヤを回転させることが、交連部を通るようにワイヤを回転させることを含むことができる。
の一方向弁を備える、フレーム構造内に配設される弁セグメントと、フレーム構造に接続されてフレーム構造の径方向外側に配設されるアンカーであって、アンカーが自由端を有する螺旋部材を備える、アンカーとを備える。
[0045]いくつかの実施形態で、螺旋部材がワイヤまたは平坦なリボンを備えることができる。
[0047]本開示の新規の特徴が添付の特許請求の範囲に具体的に記載される。本開示の原理を利用している例示の実施形態を記載する以下の詳細な記述および添付図面を参照することにより、本開示の特徴および利点をより良好に理解することができる。
ダイヤモンドパターンのスカフォールドである。当業者には、本明細書の記述から、フレーム構造12のために多くの他の構造、材料、および構成が採用されてもよいことが認識されよう。例えば、フレーム構造12が十分な弾性を有するポリマーで形成され得る。フレーム構造12が、ポリマーの中で被覆される金属(例えば、形状記憶材料)などの、金属およびポリマーの組合せで形成され得る。フレーム構造12が、ダイヤモンド形状に加えて、多様なパターンを有してもよい。
ことを必要としないことを当業者であれば認識するであろう。後でより詳細に説明されるように、アンカーが、自然弁の中の所望の位置まで弁プロテーゼ10を案内する。また、アンカー15が、望まれずに僧帽弁の腱索および弁リーフレットに絡みあったり妨害したりするのを軽減することができる。
[0080]示される実施形態で、弁プロテーゼ10が僧帽弁を置換するように構成され、自由端22が交連部(commissure)を通して挿入されるように構成される。図1が僧帽弁4を有する人間の心臓2の概略図である。図2および4が例示の僧帽弁4を示す。図で見てとれるように、複数の交連ポイント(前交連部4dおよび後交連部4e)が弁リーフレット4a、4bの端部のところに存在する。
[0082]種々の実施形態で、ワイヤ20が、その長さに沿って変化する剛性を有する。ワイヤ20が異なる剛性を有する2つ以上のセグメントを有することができ、および/または剛性がその長さにわたって変化してよい。種々の実施形態で、ワイヤ20が複数のポイントでフレーム12に取り付けられ、その結果、自由端22が比較的高い柔軟性を有し、ワイヤ20が、フレーム構造12に取り付けられる部分に沿ってより高い剛性を有する。
とができる。ワイヤ20の主コイルが概略螺旋形状を有する場合、自由端22が螺旋形状から径方向外側に延在することができる。ワイヤ20の主コイルが概略円錐台形形状を有する場合、自由端22が円錐台形形状から径方向外側に延在することができる。より大きい直径は、後でより詳細に説明されるように回転中に自由端22の緩やかな曲線部分(sweep)内で弁リーフレットおよび/または腱索を捕捉するのを容易にする。
通してデバイスを挿入することが、心臓周期中の自然弁の自然な開閉によって容易にされ得る。示される実施形態では、腱索40が内側に引かれて束になっている(図25で最も良好に見ることができる)。自然弁リーフレット42も螺旋コイル20につながっている。この段階で、弁デバイス10が自然弁40の環状部に隣接する形で堅固に固着される。
る場合、この構造部または要素は直接に他の構造部または要素の上にあってよいか、あるいは介在する構造部および/または要素が存在してもよい。対照的に、構造部または要素が別の構造部または要素の「直接に上に」あると言及される場合、介在する構造部または要素が存在しない。また、構造部または要素が、別の構造部または要素に「接続される」、「取り付けられる」、または「結合される」と言及される場合、この構造部または要素は他の構造部または要素に直接に接続され得るか、取り付けられ得るか、または結合され得、あるいは介在する構造部または要素が存在してもよい、ことを理解されたい。対照的に、構造部または要素が別の構造部または要素に「直接に接続される」、「直接に取り付けられる」、または「直接に結合される」と言及される場合、介在する構造部または要素が存在しない。1つの実施形態に関連させて説明されるかまたは示されるが、そのような形で説明されるかまたは示される構造部および要素は他の実施形態にも適用され得る。また、別の構造部に「隣接して」配設される構造または構造部に言及することが、隣接する構造部の上に置かれるかまたは下に置かれる部分を含むことができるということを当業者であれば認識するであろう。
rises)」および「備える(comprising)」などのその変化形は、方法および項目(例えば、デバイスおよび方法を含めた構成および装置)において種々の構成要素が同時に採用され得ることを意味する。例えば、「備える(comprising)」という用語は、任意の言及される要素またはステップを含み、任意の他の要素またはステップを排除しない、ことを暗に意味していることが理解されよう。
つの構造部/要素を別の構造部/要素から区別するのに使用され得る。したがって、本発明の教示から逸脱することなく、以下で考察される第1の構造部/要素は第2の構造部/要素と称されてもよく、同様に以下で考察される第2の構造部/要素は第1の構造部/要素と称されてもよい。
本発明は、以下の態様を含む。
1. 患者の罹患した自然弁を置換するための心臓弁プロテーゼであって、前記弁プロテーゼが、
収縮可能および拡張可能である、フレーム軸を有するフレーム構造と、
前記フレーム構造内に配設される弁セグメントであって、生体適合性の一方向弁を備える、弁セグメントと、
前記フレーム構造に接続され、前記フレーム構造から径方向外側に配設される収縮可能および拡張可能なアンカーであって、螺旋部材および自由端を備える、アンカーと
を備え、
前記フレーム構造および前記アンカーが独立して別個に拡張させられるように適合されており、
前記アンカーは、前記アンカーが拡張させられ前記フレーム構造が収縮させられるとき、前記フレーム軸が前記螺旋部材内の中心に位置するように、前記フレーム構造の外側周縁部を囲むように構成されている、心臓弁プロテーゼ。
2. 前記螺旋部材は、ワイヤまたは平坦なリボンを備える、1.に記載の弁プロテーゼ。
3. 前記自由端は、前記アンカーが回転するとき前記螺旋部材より大きい半径で円を描くように構成される、1.に記載の弁プロテーゼ。
4. 前記弁セグメントが複数のリーフレットを備える、1.に記載の弁プロテーゼ。
5. 前記自由端が、前記螺旋部材を、患者の自然弁の交連部を通して案内するように構成される、1.に記載の弁プロテーゼ。
6. 前記自由端が非外傷性先端部を備える、1.に記載の弁プロテーゼ。
7. 前記フレーム構造が、患者の自然弁内で拡張するように構成される、1.に記載の弁プロテーゼ。
8. 前記フレーム構造が、経皮的な挿入のために大きさおよび寸法が決定される収縮状態と、患者の自然弁への移植のために大きさおよび寸法が決定される拡張状態とを有する、1.に記載の弁プロテーゼ。
9. 前記フレーム構造が第1および第2の対向する端部を備え、前記弁プロテーゼが自然弁に跨るように配置されるとき、前記第1の端部が前記自然弁の上方に延在し、前記第2の端部が前記自然弁の下方に延在する、1.に記載の弁プロテーゼ。
10. 前記フレーム構造が拡張可能ステントを備える、1.に記載の弁プロテーゼ。
11. 前記フレーム構造が、拡張状態の外側周縁部と、径方向の外力を受けるときの収縮状態の外側周縁部とを有し、前記収縮状態の外側周縁部の直径が前記拡張状態の外側周縁部の直径より小さい、1.に記載の弁プロテーゼ。
12. 前記フレーム構造が自己拡張式である、1.に記載の弁プロテーゼ。
13. 前記弁セグメントが、内側層および外側層を有する少なくとも1つのリーフレットを備え、前記フレーム構造が、前記フレーム構造の1つまたは複数の端部のところで前記外側層に取り付けられる、1.に記載の弁プロテーゼ。
14. 前記螺旋部材が前記螺旋部材の1つの端部の位置のみで前記フレーム構造に固定して接続される、1.に記載の弁プロテーゼ。
15. 前記自由端は、前記アンカーが前記心臓内で拡張させられ回転させられるとき前記自然弁の腱索を捕捉するように構成される、1.に記載の弁プロテーゼ。
16. 患者の罹患した自然弁を置換するための心臓弁プロテーゼであって、前記弁プロテーゼが、
収縮可能および拡張可能であるフレーム構造と、
前記フレーム構造内に配設される弁セグメントであって、生体適合性の一方向弁を備える、弁セグメントと、
前記フレーム構造に接続され、第1の曲率半径を有する近位側部分、第2の曲率半径を有する中央部分および第3の曲率半径を有する遠位側部分を有する、収縮可能および拡張可能な螺旋アンカーと
を備え、
前記フレーム構造および前記螺旋アンカーが独立して別個に拡張させられるように適合されており、
前記螺旋アンカーは、前記螺旋アンカーが拡張させられ前記フレーム構造が収縮させられるとき前記フレーム構造の外側周縁部を囲むように構成されている、心臓弁プロテーゼ。
17. 前記第3の曲率半径は、前記第2の曲率半径と異なる、16.に記載の弁プロテーゼ。
Claims (15)
- 患者の罹患した自然弁を置換するための心臓弁プロテーゼであって、前記弁プロテーゼが、
収縮可能および拡張可能である、フレーム軸を有するフレーム構造と、
前記フレーム構造内に配設される弁セグメントであって、生体適合性の一方向弁を備える、弁セグメントと、
前記フレーム構造から径方向外側に配設されるように前記フレーム構造に接続された、収縮可能および拡張可能なアンカーであって、螺旋部材および自由端を備える、アンカーと
を備え、
前記フレーム構造および前記アンカーが独立して別個に拡張させられるように適合されており、
前記アンカーは、前記アンカーが拡張させられ前記フレーム構造が収縮させられるとき、前記フレーム軸が前記螺旋部材内の中心に位置するように、前記フレーム構造の外側周縁部を囲むように構成されている、心臓弁プロテーゼ。 - 前記螺旋部材は、ワイヤまたは平坦なリボンを備える、請求項1に記載の弁プロテーゼ。
- 前記自由端は、前記アンカーが回転するとき前記螺旋部材より大きい半径で円を描くように構成される、請求項1に記載の弁プロテーゼ。
- 前記弁セグメントが複数のリーフレットを備える、請求項1に記載の弁プロテーゼ。
- 前記自由端が、前記螺旋部材を、患者の自然弁の交連部を通して案内するように構成される、請求項1に記載の弁プロテーゼ。
- 前記自由端が非外傷性先端部を備える、請求項1に記載の弁プロテーゼ。
- 前記フレーム構造が、患者の自然弁内で拡張するように構成される、請求項1に記載の弁プロテーゼ。
- 前記フレーム構造が、経皮的な挿入のために大きさおよび寸法が決定される収縮状態と、患者の自然弁への移植のために大きさおよび寸法が決定される拡張状態とを有する、請求項1に記載の弁プロテーゼ。
- 前記フレーム構造が第1および第2の対向する端部を備え、前記弁プロテーゼが自然弁に跨るように配置されるとき、前記第1の端部が前記自然弁の上方に延在し、前記第2の端部が前記自然弁の下方に延在する、請求項1に記載の弁プロテーゼ。
- 前記フレーム構造が拡張可能ステントを備える、請求項1に記載の弁プロテーゼ。
- 前記フレーム構造が、拡張状態の外側周縁部と、径方向の外力を受けるときの収縮状態の外側周縁部とを有し、前記収縮状態の外側周縁部の直径が前記拡張状態の外側周縁部の直径より小さい、請求項1に記載の弁プロテーゼ。
- 前記フレーム構造が自己拡張式である、請求項1に記載の弁プロテーゼ。
- 前記弁セグメントが、内側層および外側層を有する少なくとも1つのリーフレットを備え、前記フレーム構造が、前記フレーム構造の1つまたは複数の端部のところで前記外側層に取り付けられる、請求項1に記載の弁プロテーゼ。
- 前記螺旋部材が前記螺旋部材の1つの端部の位置のみで前記フレーム構造に固定して接続される、請求項1に記載の弁プロテーゼ。
- 前記自由端は、前記アンカーが前記心臓内で拡張させられ回転させられるとき前記自然弁の腱索を捕捉するように構成される、請求項1に記載の弁プロテーゼ。
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| CN112804966B (zh) | 2025-01-24 |
| AU2019325548B2 (en) | 2025-06-26 |
| CN112804966A (zh) | 2021-05-14 |
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| CA3109642C (en) | 2025-11-25 |
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| CA3109642A1 (en) | 2020-02-27 |
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| CN119564382A (zh) | 2025-03-07 |
| AU2019325548A1 (en) | 2021-03-11 |
| JP2021533916A (ja) | 2021-12-09 |
| JP7421546B2 (ja) | 2024-01-24 |
| US12290456B2 (en) | 2025-05-06 |
| EP3840696A4 (en) | 2022-05-11 |
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