JP6804463B2 - 拡張可能シース - Google Patents
拡張可能シース Download PDFInfo
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- JP6804463B2 JP6804463B2 JP2017552849A JP2017552849A JP6804463B2 JP 6804463 B2 JP6804463 B2 JP 6804463B2 JP 2017552849 A JP2017552849 A JP 2017552849A JP 2017552849 A JP2017552849 A JP 2017552849A JP 6804463 B2 JP6804463 B2 JP 6804463B2
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- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Prostheses (AREA)
- Media Introduction/Drainage Providing Device (AREA)
- Materials For Medical Uses (AREA)
Description
10 送達装置
12 インプラント
14 操縦可能ガイドカテーテル
16 バルーンカテーテル
20 ハブ
21 ハブルーメン
22 フレア状近位端部
24 遠位先端部
26 止血弁
28 側部ポート
30 ねじ山付き遠位雄端部
32 ねじ山付き雌コネクタ
34 管状壁部構造体
38 中央ルーメン
40 弾性外方管状層
42 内方管状層
44 外方壁部
46 内方壁部
48 保持具
50 円筒状バルジ
52 ネック
54 環状空間
56 三日月形状空間
58 初期弾性ルーメン
60 長手方向ロッド
62 厚壁部分
64 薄壁部分
66 第1の長手方向延在端部
68 第2の長手方向延在端部
70 ストリップ
72 放射線不透過性リング
74 熱収縮層
76 細長セグメント
78 フレア状部分
80 導入針
81 内方先端部層
82 ひずみ逃がし管状層
84 外方先端部層
86 放射線不透過性マーカバンド、放射線不透過性層部分
90 V字形状切欠部
92 追加管状層
94 マンドレル
96 近位封止層
98 近位セクション
100 遠位封止層
Claims (13)
- インプラントを通過させるためのシースであって、当該シースは、
軸方向に貫通して延在する初期弾性ルーメンを画成する弾性外方管状層であって、前記初期弾性ルーメンは初期直径を有する、弾性外方管状層と、
薄壁部分に一体的に連結された厚壁部分を有する内方管状層であって、前記厚壁部分は、第1の長手方向延在端部および第2の長手方向延在端部を有するC字形状断面を有し、前記薄壁部分は、前記内方管状層を貫通して軸方向に延在する拡張ルーメンを画成するように前記第1の長手方向延在端部と前記第2の長手方向延在端部との間に延在し、前記拡張ルーメンは、前記初期弾性ルーメンの前記初期直径よりも大きな拡張直径を有する、内方管状層と、
を備え、
前記内方管状層は、圧縮状態では、前記弾性外方管状層が前記内方管状層の前記第2の長手方向延在端部の内側に前記第1の長手方向延在端部を付勢する状態において、前記弾性外方管状層の前記初期弾性ルーメンを貫通して延在し、
前記内方管状層は、局所的拡張状態では、前記インプラントの通過による前記弾性外方管状層の付勢に対して、前記薄壁部分が前記第1の長手方向延在端部と前記第2の長手方向延在端部との間に延在して前記拡張ルーメンを形成するより少ない重畳状態へと、前記第1の長手方向延在端部および前記第2の長手方向延在端部を離れるように径方向に拡張させ、
前記内方管状層は、前記拡張ルーメンを前記インプラントが通過した後に、前記弾性外方管状層により前記圧縮状態へと付勢されるように構成され、
前記当該シースは、前記弾性外方管状層の内方表面の内側に複数の突出部を形成するように前記弾性外方管状層の内方表面に結合され前記初期弾性ルーメン内に延在する複数の長手方向ロッドをさらに備え、前記長手方向ロッドは、前記局所的拡張状態と前記圧縮状態との間で移動する場合の前記弾性外方管状層内における前記内方管状層の相対移動を容易にするように軸受表面を形成するように構成される、シース。 - 前記内方管状層の外方表面または前記弾性外方管状層の内方表面の少なくとも一方が、前記弾性外方管状層および前記内方管状層の自由な相対摺動を可能にするように構成された潤滑コーティングを有する、請求項1に記載のシース。
- 前記内方管状層の外方表面の少なくとも1つの長手方向延在部分が、前記弾性外方管状層の内方表面の対応する長手方向延在部分に接着される、請求項1または2に記載のシース。
- 前記複数の長手方向ロッドは、前記弾性外方管状層の内方表面の周囲に周方向に離間されている、請求項1から3のいずれか一項に記載のシース。
- 前記内方管状層の内方表面に結合された少なくとも1つの長手方向ロッドをさらに備える、請求項1から4のいずれか一項に記載のシース。
- 前記内方管状層の内方表面に結合された前記少なくとも1つの長手方向ロッドは、前記内方管状層の前記内方表面の周囲に周方向に離間された複数の長手方向ロッドを備える、
請求項1から5のいずれか一項に記載のシース。 - 前記弾性外方管状層の長手方向部分の周囲に延在する放射線不透過性管状層をさらに備える、請求項1から6のいずれか一項に記載のシース。
- 前記弾性外方管状層の遠位部分が、前記内方管状層の拡張外方表面に接着される、請求項1から7のいずれか一項に記載のシース。
- 前記弾性外方管状層の遠位部分および前記内方管状層は相互に接着される、請求項1から8のいずれか一項に記載のシース。
- 前記弾性外方管状層の遠位部分および前記内方管状層は、封止構成へと相互にリフロー接合される、請求項1から9のいずれか一項に記載のシース。
- 前記弾性外方管状層内に埋設された複数の長手方向ロッドをさらに備える、請求項1から10のいずれか一項に記載のシース。
- 前記シースの遠位部分がフレア形状を有する、請求項1から11のいずれか一項に記載のシース。
- フレア形状は、重畳構成へと折り畳まれる、請求項1から12のいずれか一項に記載のシース。
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