ROTATIONAL TISSUE CUTTING DEVICE

To provide a novel rotational tissue cutting device.SOLUTION: Disclosed embodiments include apparatuses, systems and methods for cutting an opening in a tissue wall. An apparatus includes an inner cutting member having a first cylindrical body supporting at least one first cutting surface at a distal end. The first cutting surface faces in a first rotational direction relative to an axis of the first cylindrical body and has a first cutting edge at an outer periphery of the first cylindrical body. The apparatus also includes an outer cutting member having a second cylindrical body concentrically disposed around the first cylindrical body, and supporting at least one second cutting surface at the distal end. The second cutting surface faces in a second rotational direction relative to the axis and has a second cutting edge at an inner periphery of the second cylindrical body. A tissue is rotatably scissorable between the first cutting edge of the inner cutting member and the second cutting edge of the outer cutting member in response to applying the distal end of the apparatus to a tissue and counter-rotating the inner cutting member and the outer cutting member.SELECTED DRAWING: Figure 1 【課題】新規な回転型組織切断デバイスの提供。【解決手段】開示される実施形態は組織壁における開口部を切断するための装置、システム及び方法を含む。本装置は遠位端部において少なくとも１つの第１切削面を支持する第１円筒形本体を有する内側切削部材を含む。第１切削面は第１円筒形本体の軸に対して第１の回転方向に面し、かつ第１円筒形本体の外側周囲にて第１切削端部を有する。本装置はまた第１円筒形本体の周囲に同心状に配置され、かつ遠位端部にて少なくとも１つの第２切削面を支持する第２円筒形本体を有する外側切削部材をも含む。第２切削面は軸線に対して第２の回転方向に面し、かつ第２円筒形本体の内側周囲にて第２切削端部を有する。組織は組織に対する装置の遠位端部の適用並びに内側切削部材及び外側切削部材を逆回転させることに応答して、内側切削部材の第１切削縁部と外側切削部材の第２切削縁部との間で回転可能に切断可能である。【選択図】図１