JP5993370B2 - 医療用観察装置 - Google Patents
医療用観察装置 Download PDFInfo
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Description
Claims (18)
- 医療用観察装置のシャフトに用いるカバーであって、
前記カバーは細長い管状部材を備えると共に、前記シャフトの遠位端部の長さの少なくとも一部に沿って延在して前記医療用観察装置の前記シャフトの遠位端に装着されるように構成され、
前記管状部材は、少なくとも一部が前記シャフトを把持し前記カバーを所定の位置に保持する内面と、間隔を置いて配置された複数の突出要素を備える外面と、を備え、
前記突出要素は、前記管状部材の前記外面にヒンジで結合されて取り付けられ、
前記突出要素はそれぞれ、先端部と基礎部とを有し、
前記突出要素は、前記先端部が前記医療用観察装置の近位端部を向く0度と、前記先端部が前記医療用観察装置の遠位端部を向く170−180度の間の角度で、ヒンジで結合された前記基礎部を中心に移動可能である、ことを特徴とするカバー。 - 前記突出要素は、前記医療用観察装置が挿入された体内通路の内腔内で広がって内腔壁を接触支持し、拡張するように、第1の静止位置から、前記突出要素の前記先端部が前記医療用観察装置の長手方向軸に略平行となる第2の位置へ及び前記医療用観察装置の前記シャフトの前記長手方向軸に略直交する角度となる第3の位置へ移動可能であり、
前記医療用観察装置が最初に挿入された身体開口部から前記医療用観察装置を抜き出すことができるように、前記突出要素は前記第3の位置を越えて移動可能であり、前記突出要素の前記先端部が前記医療用観察装置の前記遠位端部を向く第4の位置となるように、臨界点で反転することを特徴とする請求項1に記載のカバー。 - 前記突出要素の前記管状部材の外面への取り付けは、一体的成形、又は型成形によるものである請求項1または2に記載のカバー。
- 前記カバーは、前記医療用観察装置の前記シャフトを取り囲み、少なくとも前記シャフトの先端領域に亘って延在するように、前記医療用観察装置に装着されることを特徴とする請求項1〜3のいずれか1項に記載のカバー。
- 前記突出要素は、剛毛状、くぎ状、針状、ひれ状、パドル状、又は円錐状の形状を有し、前記管状部材の前記外面から外側へ離れる方向に突出していることを特徴とする請求項1乃至4のいずれか1項に記載のカバー。
- 前記突出要素は、円筒状、円錐状、又はテーパー形状であることを特徴とする請求項1乃至5のいずれか1項に記載のカバー。
- 前記医療用観察装置の前記シャフトを把持し前記カバーを所定の位置に保持する前記内面の前記少なくとも一部は、前記管状部材の近位端部及び遠位端部領域、又は前記管状部材の前記内面全域のいずれかであることを特徴とする請求項1〜6のいずれか1項に記載のカバー。
- 前記管状部材は、切れ目のない管状部材、或いは、前記医療用観察装置の長手方向の軸に平行に長手方向に延在する複数のスリット又はリッジ又はギャップが設けられた管状部材であり、
前記スリット又は前記ギャップの数は前記突出要素の数に正比例し、前記突出要素は、前記管状部材の中実部間の前記スリット又は前記ギャップの中に配置されることを特徴とする請求項1〜7のいずれか1項に記載のカバー。 - 前記突出要素の長さは、前記カバーの近位端部と遠位端部のいずれか一方又は両方においてわずかに短いことを特徴とする請求項1〜8のいずれか1項に記載のカバー。
- 長めの前記突出要素は、短めの前記突出要素よりも可撓性があって、柔軟性がある材料で構成されていることを特徴とする請求項9に記載のカバー。
- 前記管状部材及び/又は前記突出要素は、ポリマー、プラスチック、エラストマー、シリコン、シリコンエラストマー材料、及び、ゴムを含む群から選択された生体適合性のある可撓性材料からなることを特徴とする請求項1〜10のいずれか1項に記載のカバー。
- 静止位置にある前記突出要素は、前記医療用観察装置の前記シャフトに中央長手方向軸に対して35°〜85°の間の角度で鋭角をなしていることを特徴とする請求項1〜11のいずれか1項に記載のカバー。
- 前記突出要素は、前記カバーの外周面を周回するリングに配列する請求項1〜12のいずれか1項に記載のカバー。
- 前記カバーの各リングが、4〜16個の、任意には5〜10個の前記突出要素を備える請求項13に記載のカバー。
- 前記突出要素は、2.5cm〜0.5cmの、任意には1.5cm〜0.5cmの間の間隔で配置されていることを特徴とする請求項13又は14に記載のカバー。
- 前記突出要素における最も遠位端側のリングが、前記カバーの遠位端部から1mm〜20mmの間に位置することを特徴とする請求項13〜15のいずれか1項に記載のカバー。
- 前記突出要素における前記最も遠位端側のリングが、前記カバーの前記遠位端部から5mm〜15mmの間に位置することを特徴とする請求項16に記載のカバー。
- 医療用観察装置の遠位のシャフトの少なくとも一部を形成する請求項1乃至17のいずれか1項に記載のカバーを備える医療用観察装置。
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JP2014212835A (ja) | 2013-04-23 | 2014-11-17 | ショーダテクトロン株式会社 | 内視鏡用フードおよび同内視鏡用フードを備えた内視鏡 |
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