tissue removal device comprises a handle portion may comprise a tissue removal mechanism coupled to the handle portion. Tissue removal mechanism includes a tubular member having a lumen therethrough, which may include a extension member which is rotatably and slidably disposed within the lumen of the tubular member. The proximal end of the elongated member may be coupled to a drive source for imparting the rotational movement. The distal end of the elongated member may include an impeller for cutting the tissue. Extension member, the distal end of the second tubular member to come to distal of the distal end of the first tubular member are configured to emit from the distal end of the lumen of the first tubular member it may be. Impeller, when the distal end of the elongated member is in distal the distal end of the tubular member, to the undesirable tissue damage to a minimum, and may also include a blunt distal end.組織除去装置は、ハンドル部分と、ハンドル部分に連結される組織除去機構とを備えてもよい。組織除去機構は、それを通して管腔を有する管状部材と、管状部材の管腔内に回転可能かつ摺動可能に配置される伸長部材とを含んでもよい。伸長部材の近位端は、その回転移動を付与する駆動源に連結されてもよい。伸長部材の遠位端は、組織を切断するためのインペラを含んでもよい。伸長部材は、第2の管状部材の遠位端が第1の管状部材の遠位端の遠位に来るように、第1の管状部材の管腔の遠位端から出射するように構成されてもよい。インペラは、伸長部材の遠位端が管状部材の遠位端の遠位にあるとき、望ましくない組織損傷を最小限にするために、鈍的遠位端を含んでもよい。
