JP7457137B2 - ステント展開システム - Google Patents
ステント展開システム Download PDFInfo
- Publication number
- JP7457137B2 JP7457137B2 JP2022545452A JP2022545452A JP7457137B2 JP 7457137 B2 JP7457137 B2 JP 7457137B2 JP 2022545452 A JP2022545452 A JP 2022545452A JP 2022545452 A JP2022545452 A JP 2022545452A JP 7457137 B2 JP7457137 B2 JP 7457137B2
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- Prior art keywords
- sheath
- stent
- tubular member
- delivery system
- distal end
- 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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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
- A61F2/95—Instruments specially adapted for placement or removal of stents or stent-grafts
- A61F2/962—Instruments specially adapted for placement or removal of stents or stent-grafts having an outer sleeve
- A61F2/966—Instruments specially adapted for placement or removal of stents or stent-grafts having an outer sleeve with relative longitudinal movement between outer sleeve and prosthesis, e.g. using a push rod
-
- 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
- A61F2/95—Instruments specially adapted for placement or removal of stents or stent-grafts
- A61F2/962—Instruments specially adapted for placement or removal of stents or stent-grafts having an outer sleeve
- A61F2/97—Instruments specially adapted for placement or removal of stents or stent-grafts having an outer sleeve the outer sleeve being splittable
-
- 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
-
- 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
- A61F2/95—Instruments specially adapted for placement or removal of stents or stent-grafts
- A61F2/962—Instruments specially adapted for placement or removal of stents or stent-grafts having an outer sleeve
- A61F2002/9623—Instruments specially adapted for placement or removal of stents or stent-grafts having an outer sleeve the sleeve being reinforced
-
- 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
- A61F2230/001—Figure-8-shaped, e.g. hourglass-shaped
-
- 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
- A61F2250/0039—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
-
- 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
- A61F2250/0071—Additional features; Implant or prostheses properties not otherwise provided for breakable or frangible
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)
- Media Introduction/Drainage Providing Device (AREA)
Description
第1例では、生体管腔へステントを送達するための送達システムは、外側チューブ状部材を備え得る。該外側チューブ状部材は、ルーメンを画成するとともに、近位端領域及び遠位端領域を有する。該送達システムは、切断要素を備え得る。該切断要素は、外側チューブ状部材の遠位端領域に隣接して当該外側チューブ状部材の内面に結合され、内面から半径方向内側に延びる。該送達システムは、内側チューブ状部材を備え得る。該内側チューブ状部材は、ルーメンを画成するとともに近位端領域及び遠位端領域を有し、外側チューブ状部材のルーメン内に摺動自在に配置される。該送達システムは、拡張可能なステントを備え得る。該拡張可能なステントは、内側チューブ状部材の遠位端領域に隣接して当該内側チューブ状部材の外面の周りに配置される。該送達システムは、シースを備え得る。該シースは、拡張可能なステントに被さって解放自在に配置されるとともに拡張可能なステントを半径方向に潰れた形態に維持するように構成される。切断要素は、拡張可能なステントから半径方向に間隔を隔てたままで、外側チューブ状部材を近位側へ後退させることによってシースを切断するように構成され得る。
上述の例のいずれかの代わりに又はそれに加えて、別の例では、切断要素は、鋸歯ブレードからなり得る。
上述の例のいずれかの代わりに又はそれに加えて、別の例では、切断要素は、外側チューブ状部材の内面の周囲に偏心して配置された2つ以上の切断要素からなり得る。
上述の例のいずれかの代わりに又はそれに加えて、別の例では、シースは、複数のミシン目を備え得る。
上述の例のいずれかの代わりに又はそれに加えて、別の例では、外側チューブ状部材を近位側へ後退させることによって、シースがステントから解放され得る。
上述の例のいずれかの代わりに又はそれに加えて、別の例では、送達システムは、拡張可能なステントに隣接してチューブ状部材に形成された1つ以上のポートをさらに備え得る。
別の例では、生体管腔へステントを送達するための送達システムは、外側チューブ状部材を備え得る。該外側チューブ状部材は、ルーメンを画成するとともに、近位端領域及び遠位端領域を有する。該送達システムは、切断要素を備え得る。該切断要素は、外側チューブ状部材の遠位端領域に隣接して当該外側チューブ状部材の内面に結合され、内面から半径方向内側に延びる。該送達システムは、内側チューブ状部材を備え得る。該内側チューブ部材は、ルーメンを画成するとともに、近位端領域及び遠位端領域を有し、外側チューブ状部材のルーメン内に摺動自在に配置される。該送達システムは、拡張可能なステントを備え得る。該拡張可能なステントは、内側チューブ状部材の遠位端領域に隣接して当該内側チューブ状部材の外面の周りに配置される。該送達システムは、シースを備え得る。該シースは、拡張可能なステントに被さって解放自在に配置されるとともに、拡張可能なステントを半径方向に潰れた形態に維持するように構成される。切断要素は、拡張可能なステントから半径方向に間隔を隔てたままで、外側チューブ状部材を近位側へ後退させることによってシースを切断するように構成され得る。
上述の例のいずれかの代わりに又はそれに加えて、別の例では、切断要素は、鋸歯ブレードからなり得る。
上述の例のいずれかの代わりに又はそれに加えて、別の例では、切断要素は、外側チューブ状部材の内面の周囲に偏心して配置された2つ以上の切断要素からなり得る。
上述の例のいずれかの代わりに又はそれに加えて、別の例では、シースは、複数のミシン目を備え得る。
上述の例のいずれかの代わりに又はそれに加えて、別の例では、外側チューブ状部材を近位側へ後退させることによって、シースは、ステントから解放され得る。
上述の例のいずれかの代わりに又はそれに加えて、別の例では、レリーズタブは、シースの周囲で間隔を隔てる2つ以上のレリーズタブからなり得る。
上述の例のいずれかの代わりに又はそれに加えて、別の例では、レリーズタブは、シースの長手方向軸に対してほぼ平行に延び得る。
上述の例のいずれかの代わりに又はそれに加えて、別の例では、流体は食塩水とし得る。
本発明は、添付図面と併せて、様々な実施形態の以下の詳細な説明を考慮して、より完全に理解され得る。
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/又は値は、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。
以下の詳細な説明は、図面を参照して読まれるべきであり、図面では、異なる図面において、同様の要素に同じ符号が付される。詳細な説明及び必ずしも縮尺通りではない図面は、説明に役立つ実施形態を示しており、且つ本開示の範囲を限定するものではない。説明した説明に役立つ実施形態は、例示にすぎないものとする。いずれかの説明に役立つ実施形態のうちの選択された特徴は、特段の記載が明白にない限り、追加的な実施形態に組み込まれ得る。
Claims (11)
- 生体管腔へステントを送達するための送達システムであって、
該送達システムは、外側チューブ状部材を備え、該外側チューブ状部材は、ルーメンを画成するとともに、近位端領域及び遠位端領域を有し、
該送達システムは、切断要素を備え、該切断要素は、前記外側チューブ状部材の前記遠位端領域に隣接して前記外側チューブ状部材の内面に結合され、前記内面から半径方向内側に延びており、
該送達システムは、内側チューブ状部材を備え、該内側チューブ状部材は、ルーメンを画成するとともに、近位端領域及び遠位端領域を有し、前記外側チューブ状部材の前記ルーメン内に摺動自在に配置されており、
該送達システムは、拡張可能なステントを備え、該拡張可能なステントは、前記内側チューブ状部材の前記遠位端領域に隣接して当該内側チューブ状部材の外面の周りに配置されており、
該送達システムは、シースを備え、該シースは、前記拡張可能なステントに被さって解放自在に配置されるとともに、前記拡張可能なステントを半径方向に潰れた形態に維持するように構成されており、前記シースは近位端と遠位端とを有し、
前記切断要素は、前記拡張可能なステントから半径方向に間隔を隔てたままで、前記外側チューブ状部材を近位側へ後退させることによって前記シースを、当該シースの前記近位端から当該シースの前記遠位端までの全長にわたって切断するように構成される、送達システム。 - 前記切断要素は、ブレードからなる、請求項1に記載の送達システム。
- 前記切断要素は、鋸歯ブレードからなる、請求項1に記載の送達システム。
- 前記切断要素は、一対のブレードからなり、該一対のブレードは、V字形状の切断面を形成するように一緒に固定される請求項1に記載の送達システム。
- 前記切断要素は、前記外側チューブ状部材の前記内面の周囲に均一に配置された2つ以上の切断要素からなる、請求項1~4のいずれか1項に記載の送達システム。
- 前記切断要素は、前記外側チューブ状部材の前記内面の周囲に偏心して配置された2つ以上の切断要素からなる、請求項1~4のいずれか1項に記載の送達システム。
- 前記外側チューブ状部材の内径は、前記シースの外径よりも大きい、請求項1~6のいずれか1項に記載の送達システム。
- 前記シースは複数のミシン目を備える、請求項1~7のいずれか1項に記載の送達システム。
- 前記複数のミシン目は、前記切断要素と半径方向に位置合わせされる、請求項8に記載の送達システム。
- 前記外側チューブ状部材を近位側へ後退させることによって、前記シースが前記ステントから解放される、請求項1~9のいずれか1項に記載の送達システム。
- 前記外側チューブ状部材を近位側へ後退させることによって前記シースが切断された後、前記シースが除去可能となるように構成される、請求項1~10のいずれか1項に記載の送達システム。
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