JP6159829B2 - 胆管および膵管のうちの少なくともいずれか一方を通して使用される医療器具 - Google Patents
胆管および膵管のうちの少なくともいずれか一方を通して使用される医療器具 Download PDFInfo
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- JP6159829B2 JP6159829B2 JP2015560329A JP2015560329A JP6159829B2 JP 6159829 B2 JP6159829 B2 JP 6159829B2 JP 2015560329 A JP2015560329 A JP 2015560329A JP 2015560329 A JP2015560329 A JP 2015560329A JP 6159829 B2 JP6159829 B2 JP 6159829B2
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- Pathology (AREA)
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- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Media Introduction/Drainage Providing Device (AREA)
Description
ントは、内部に形成される長手方向のチャネルを備える外側表面を有する。長手方向のチャネルは膵管の枝から流体を排出するように構成される。
本開示は様々な変形および別例の形態に柔軟であるが、その具体例は図面に例示され、詳細に後述される。しかしながら、本発明を所定の実施形態に限定することを意図したものではないものといえる。逆に、本開示の趣旨および範囲内にあるすべての変更、均等物、および別例をカバーするものと意図される。
以下に定義された用語に関して、異なる定義が特許請求の範囲や本明細書の別の部分で示されない限り、これらの定義が適用されるものとする。
ies)を胆樹および膵臓の管内に注入し、これによりX線上でこれらを視認する。これらの処置においては、胆管へのアクセスを得てこれを保持することが必要とされ、実施のために、技術的に挑戦的であり、熟達するために広範囲な実地訓練が要求され、1つ以上の高価なツールが要求される。胆管の閉塞状態は、原発性硬化性胆管炎疾患、管内の結石、瘢痕化などの肝臓障害を含む胆道系の障害の多くで生じる。これは、病気を処置するために胆道系から閉塞した流体を排出する必要を要求する。多くの場合において、医師は、腹部の皮膚を介して肝臓内に微細針を配置し、これを胆管内に進める。ドレナージュ・チューブが続いて胆管に配置され、これにより、胆道系から閉塞した流体が排出される。
の外側表面と、流体が通過する体腔との間に空間を形成する。これにより、胆管および/または膵管に沿った側面の枝からの流体は、ステント本体210に沿って、チャネル218内に、かつ最終的に十二指腸内に流れる。これは、ステント本体210の開口部を通過するか、チャネル218に沿って十二指腸内に直接移動する流体を含む。
体の排出を支援する。
Claims (15)
- 胆管および膵管を通して使用される移植可能な医療器具であって、
患者の十二指腸内に配置されるように構成される第1の端並びに膵管および胆管のうちの少なくともいずれか一方に隣接して配置されるように構成される第2の端を有する管状部材を備え、
前記管状部材は、一体的に織り込まれた1本以上のワイヤ・フィラメントから形成される本体を有し、
前記本体は外側表面を有し、および前記外側表面に形成される長手方向チャネルを備え、
前記長手方向チャネルは前記本体の外側表面と患者の体腔との間に空間を画定することを特徴とする移植可能な医療器具。 - 前記本体は、単一のワイヤ・フィラメントを含むことを特徴とする請求項1に記載の移植可能な医療器具。
- 前記本体は、複数のワイヤ・フィラメントを含むことを特徴とする請求項1に記載の移植可能な医療器具。
- 前記1本以上のワイヤ・フィラメントは編み込まれることを特徴とする請求項1乃至3のうちのいずれか一項に記載の移植可能な医療器具。
- 前記1本以上のワイヤ・フィラメントのうちの少なくともいくつかは、形状記憶材料を含むことを特徴とする請求項1乃至4のうちのいずれか一項に記載の移植可能な医療器具。
- 前記1本以上のワイヤ・フィラメントのうちの少なくともいくつかは、ニッケル・チタン合金を含むことを特徴とする請求項1乃至5のうちのいずれか一項に記載の移植可能な医療器具。
- 前記本体の前記外側表面は、複数の長手方向チャネルを含むことを特徴とする請求項1乃至6のうちのいずれか一項に記載の移植可能な医療器具。
- 前記本体の前記外側表面は、同本体の前記外側表面の周囲を延びる径方向チャネルを含むことを特徴とする請求項1乃至7のうちのいずれか一項に記載の移植可能な医療器具。
- カバーが前記管状部材の周囲に設けられ、前記カバーは、その内部に1つ以上の開口部が形成されることを特徴とする請求項1乃至8のうちのいずれか一項に記載の移植可能な医療器具。
- 前記カバーは、コーティング、フィルム、あるいはシースであることを特徴とする請求項9に記載の移植可能な医療器具。
- 前記本体の前記外側表面は、同本体の前記外側表面の周囲を延びる周方向チャネルを含むことを特徴とする請求項9に記載の移植可能な医療器具。
- 前記管状部材の前記第1の端は、フレア状であることを特徴とする請求項1乃至11のうちのいずれか一項に記載の移植可能な医療器具。
- 膵管を通して使用される移植可能な医療器具であって、
流体を排出するために、患者の十二指腸内に配置されるように構成される第1の端並びに膵管に隣接して配置されるように構成される第2の端を有し、1本以上のワイヤ・フィラメントから形成される編み込みステントを備え、
同編み込まれたステントは、外側表面に長手方向のチャネルが形成される外側表面を有し、該長手方向のチャネルは、前記膵管の枝から流体を排出するように構成されることを特徴とする移植可能な医療器具。 - 前記編み込まれたステントの前記外側表面は、複数の長手方向チャネルを含むことを特徴とする請求項13に記載の移植可能な医療器具。
- 前記編み込まれたステントの前記外側表面に形成されるとともに前記編み込まれたステントの前記外側表面の周囲を延びる周方向チャネルが設けられることを特徴とする請求項13または14に記載の移植可能な医療器具。
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