PROSTHETIC HEART VALVE

To provide implantable expandable prosthetic devices and methods for crimping a prosthetic device, in particular, methods for radially compressing a prosthetic valve.SOLUTION: Embodiments of a radially collapsible and expandable prosthetic heart valve are disclosed. The prosthetic valve can comprise...

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Bibliographic Details
Main Authors SON V NGUYEN, ELENA SHERMAN, TAMIR S LEVI, AJAY CHADHA, OREN H WINTNER, RON SHARONI, JEFF LINDSTROM, KEVIN D RUPP
Format Patent
LanguageEnglish
Japanese
Published 28.05.2020
Subjects
BANDAGES, DRESSINGS OR ABSORBENT PADS
DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF,TUBULAR STRUCTURES OF THE BODY, E.G. STENTS
FILTERS IMPLANTABLE INTO BLOOD VESSELS
FIRST-AID KITS
FOMENTATION
HUMAN NECESSITIES
HYGIENE
MEDICAL OR VETERINARY SCIENCE
ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES
PROSTHESES
TREATMENT OR PROTECTION OF EYES OR EARS
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Summary:To provide implantable expandable prosthetic devices and methods for crimping a prosthetic device, in particular, methods for radially compressing a prosthetic valve.SOLUTION: Embodiments of a radially collapsible and expandable prosthetic heart valve are disclosed. The prosthetic valve can comprise an annular frame, leaflets, an inner skirt, and an outer skirt. The outer skirt can be secured to the outside of an inflow end portion of the frame, and has longitudinal slack which buckles outward radially when the valve is in an expanded configuration and which lies flat when the valve is in a collapsed configuration. In some embodiments, the outer skirt is stiffer in the axial direction of the valve than in the circumferential direction of the valve. In additional embodiments, the outer skirt comprises a self-expandable fabric comprising fibers made of a shape memory material having a shape memory set to enhance the radially outward buckling of the outer skirt. Methods for crimping such valves to a collapsed or partially collapsed configuration are also disclosed.SELECTED DRAWING: Figure 2 【課題】植込み可能な拡張可能人工器官と、人工器官をクリンプ状にするための方法とに関し、人工弁を径方向に圧縮する方法を提供する。【解決手段】径方向に収縮可能かつ拡張可能な人工心臓弁の実施形態が開示される。この人工弁は、環状フレーム、弁尖、内方スカート、および外方スカートを備えることが可能である。外方スカートは、フレームの流入端部部分の外側に固定され、外方スカートは、弁が拡張構成にある場合に径方向に外方に座屈し弁が収縮構成にある場合に平坦状になる長手方向弛みを有し得る。いくつかの実施形態では、外方スカートは、弁の周方向よりも弁の軸方向においてより高い剛直性である。さらなる実施形態では、外方スカートは、外方スカートの径方向外方座屈を強化するように設定された形状記憶を有する形状記憶材料から作製された繊維を含む自己拡張可能布帛を備える。また、収縮構成または部分収縮構成へとかかる弁をクリンプ状にする方法が開示される。【選択図】図２
Bibliography:Application Number: JP20200014975