This invention is long with flexibiility in various execution configurations, possesses the rotary possible Drive shaft, at least one which has polished surface flexibiility or offers rotating type aterekutomidebaisu which installs the decentering enlargement grinding of non-flexible and disconnection head there. When it can be laid out vis-a-vis strangulation system, can turn at high speed, lesion aperture to the diameter which decentering Characteristic of the grinding and disconnection head it moves according to raceway path, is larger than stationary diameter of the enlargement grinding and disconnection head. It is desirable, the grinding and disconnection head has the mass center which has been alienated from the revolving shaft of the Drive shaft in radial, improves the capacity of the device which is moved according to raceway path. The grinding and disconnection head, while minimizing the external wound of vascular, the proximity which makes the disconnection of the difficult strangulation material easy and/or has the distance radeiasu condition aspect. With example of part, as for the grinding and disconnection head, it is produced with the metal of relatively high density.本発明は、種々の実施形態において、可撓性で細長く、回転可能な駆動シャフトを有し、研磨面を備える少なくとも1つの可撓性または非可撓性の偏心拡大研磨および切断ヘッドをそこに取り付けた回転式アテレクトミーデバイスを提供する。狭窄組織に対して配置され、高速で回転させられると、研磨および切断ヘッドの偏心性が軌道経路に沿って移動し、拡大研磨および切断ヘッドの静止直径よりも大きい直径まで病変を開口する。好ましくは、研磨および切断ヘッドは、駆動シャフトの回転軸から半径方向に離間している質量中心を有し、軌道経路に沿って移動するデバイスの能力を向上させる。研磨および切断ヘッドは、血管の外傷を最小化しながら、困難な狭窄物質の切断を容易にする近位および/または遠位ラディアス状面を備える。一部の例では、研磨および切断ヘッドは、比較的高密度の金属で作製される。
