JP7499339B2 - 移動防止ステント - Google Patents
移動防止ステント Download PDFInfo
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- JP7499339B2 JP7499339B2 JP2022542688A JP2022542688A JP7499339B2 JP 7499339 B2 JP7499339 B2 JP 7499339B2 JP 2022542688 A JP2022542688 A JP 2022542688A JP 2022542688 A JP2022542688 A JP 2022542688A JP 7499339 B2 JP7499339 B2 JP 7499339B2
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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
- A61F2/82—Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
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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
- A61F2/82—Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/848—Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents having means for fixation to the vessel wall, e.g. barbs
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- A—HUMAN NECESSITIES
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- 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
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- 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
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- 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
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- 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
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- A—HUMAN NECESSITIES
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- 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
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- A—HUMAN NECESSITIES
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- 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
- A61F2250/0039—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 diameter
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)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Prostheses (AREA)
- Media Introduction/Drainage Providing Device (AREA)
- Materials For Medical Uses (AREA)
Description
第1例において、ステントは、細長チューブ状部材を備え、該細長チューブ状部材は、少なくとも1つのストラットを備え、該ストラットはチューブ状の壁を形成し、該チューブ状の壁は、複数のセルを有し、該複数のセルは、チューブ状の壁の厚さ部分を貫通して延びており、該細長チューブ状部材は、半径方向に潰れた形態と半径方向に拡張した形態との間で動くように構成されており、ステントは、細長チューブ状部材に配置されるとともに複数のセルにわたるコーティングを備え、該コーティングは、複数のセルのうち少なくともいくつかの内にポケットを形成するとともに、空隙を画成するようにチューブ状の壁の半径方向内側に延びており、ステントは、少なくともいくつかのポケット内に配置されたパーティションを備え、各パーティションは、ポケットの底面から半径方向外側に延びるとともに、空隙を横断する。
上述の例のいずれかの代わりに又はそれに加えて、別の例において、少なくともいくつかのパーティションは、隣接する交差点間に延び得る。
上述の例のいずれかの代わりに又はそれに加えて、別の例において、コーティングは、ステントを通って長手方向に延びるルーメンの表面全体を画成し得る。
上述の例のいずれかの代わりに又はそれに加えて、別の例において、コーティング及びパーティションは、単一のモノリシックな構造として形成され得る。
別の例において、ステントは、細長チューブ状部材を備え、該細長チューブ状部材は、少なくとも1つのストラットを備え、該ストラットはチューブ状の壁を形成し、該チューブ状の壁は、複数のセルを有し、該複数のセルは、チューブ状の壁の厚さ部分を貫通して延びており、該細長チューブ状部材は、半径方向に潰れた形態と半径方向に拡張した形態との間で動くように構成されており、ステントは、細長チューブ状部材に配置されるとともに複数のセルにわたるコーティングを備え、該コーティングは、複数のセルのうち少なくともいくつかの内にポケットを形成するとともに、空隙を画成するようにチューブ状の壁の半径方向内側に延びている。ポケットは、4つの収束する側壁と、4つの収束する側壁のそれぞれと交わるベース壁とを備えるピラミッド形状とし得る。
上述の例のいずれかの代わりに又はそれに加えて、別の例において、コーティング及びパーティションは、単一のモノリシックな構造として形成され得る。
本明細書の全ての数値は、明白に示されるか否かに関わらず、用語「約」によって修正されると考えら得る。用語「約」は、一般的に当業者が、列挙した値と等価である(例えば、同じ機能又は結果を有する)と考える数字の範囲を指す。多くの場合、用語「約」は、最も近い有効桁に丸められた数字を含むとして示され得る。
様々な構成要素、特徴及び/又は仕様に関わるいくつかの好適な寸法、範囲、及び/又は値が開示されるが、本開示によって刺激された当業者は、所望の寸法、範囲、及び/又は値が明白に開示されたものから逸脱し得ることを理解するであろう。
Claims (14)
- ステントであって、
前記ステントは、細長チューブ状部材を備え、該細長チューブ状部材は、少なくとも1つのストラットを備え、該ストラットはチューブ状の壁を形成し、該チューブ状の壁は、複数のセルを有し、該複数のセルは、前記チューブ状の壁の厚さ部分を貫通して延びており、該細長チューブ状部材は、半径方向に潰れた形態と半径方向に拡張した形態との間で動くように構成されており、
前記ステントは、前記細長チューブ状部材に設けられるとともに前記複数のセルにわたるコーティングを備え、該コーティングは、前記複数のセルのうち少なくともいくつかの内にポケットを形成するとともに、空隙を画成するように前記チューブ状の壁の半径方向内側に延びており、
前記ステントは、少なくともいくつかの前記ポケット内に配置されたパーティションを備え、各パーティションは、前記ポケットの底面から半径方向外側に延びるとともに、前記空隙を横断し、
前記各パーティションは、前記ポケットの第1側から前記ポケットの第2側まで空隙を全体的に横切って延び、
前記ポケットの前記底面は半径方向外側に向いているとともに前記チューブ状の壁の半径方向内側に配置される、
ステント。 - 少なくともいくつかの前記パーティションは、前記細長チューブ状部材の中心長手方向軸線に対してほぼ直角に延びる、請求項1に記載のステント。
- 少なくともいくつかの前記パーティションは、前記細長チューブ状部材の中心長手方向軸線に対してほぼ平行に延びる、請求項1又は2に記載のステント。
- 少なくともいくつかの前記パーティションは、前記細長チューブ状部材の中心長手方向軸線に対して傾斜した角度に延びる、請求項1~3のいずれか1項に記載のステント。
- 前記パーティションの前記細長チューブ状部材の半径方向の距離に沿う高さは、前記コーティングが設けられた前記少なくとも1つのストラットの半径方向の距離に沿う高さと等しい、請求項1~4のいずれか1項に記載のステント。
- 前記少なくとも1つのストラットは複数の交差点を形成する、請求項1~5のいずれか1項に記載のステント。
- 少なくともいくつかの前記パーティションは、対向する交差点間に延びる、請求項6に記載のステント。
- 少なくとも1つのポケットは2つ以上のパーティションを含む、請求項1~7のいずれか1項に記載のステント。
- 前記コーティングは、前記ステントを通って長手方向に延びるルーメンの表面全体を画成する、請求項1~8のいずれか1項に記載のステント。
- 少なくともいくつかの前記ポケットは、当該ポケットを貫通して形成されたアパーチャを含む、請求項1~8のいずれか1項に記載のステント。
- 前記コーティング及び前記パーティションは、単一のモノリシックな構造として形成される、請求項1~10のいずれか1項に記載のステント。
- 前記コーティングは、前記細長チューブ状部材の内面若しくは外面又は前記内面及び前記外面を覆って設けられる、請求項1~11のいずれか1項に記載のステント。
- ステントであって、
前記ステントは、細長チューブ状部材を備え、該細長チューブ状部材は、少なくとも1つのストラットを備え、該ストラットはチューブ状の壁を形成し、該チューブ状の壁は、複数のセルを有し、該複数のセルは、前記チューブ状の壁の厚さ部分を貫通して延びており、該細長チューブ状部材は、半径方向に潰れた形態と半径方向に拡張した形態との間で動くように構成されており、
前記ステントは、前記細長チューブ状部材に設けられるとともに前記複数のセルにわたるコーティングを備え、該コーティングは、前記複数のセルのうち少なくともいくつかの内にポケットを形成するとともに、空隙を画成するように前記チューブ状の壁の半径方向内側に延びており、
前記ポケットは、それぞれのポケットのベース壁に対し径方向外側に面する4つの収束する側壁を備える、面取りされたピラミッド形状であり、
各ポケットの前記ベース壁の半径方向外側面は、前記チューブ状の壁の半径方向内側の範囲から半径方向内側に離間している、ステント。 - 少なくともいくつかの前記ポケット内に配置されたパーティションをさらに備え、各パーティションは、それぞれのポケットの底の半径方向外側の対向する面から半径方向外側に延びるとともに、前記空隙を横断する、請求項13に記載のステント。
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