A biopsy marker for use in breast biopsy is provided. The biopsy marker can include three shapes arranged in order along an axis, each shape having a first surface and a second surface parallel to the first surface. The first narrow portion connects the first shape portion of the three shape portions and the second shape portion of the three shape portions. The second narrow portion connects the second shape portion of the three shape portions to the third shape portion of the three shape portions. The first narrow portion is twisted about the axis so that the first surface of the first shape portion is at a first angle with respect to the first surface of the second shape portion. The second narrow portion is twisted about the axis so that the first surface of the second shape portion is at a second angle with respect to the first surface of the third shape portion. [Selection] Figure 2A【課題】乳房生検に使用するための生検マーカーを提供する。【解決手段】生検マーカーは、軸に沿って順に配列された３つの形状部を含むことができ、それぞれの形状部は、第１表面及び第１表面に平行する第２表面を有する。第１狭小部は、３つの形状部のうち第１形状部と３つの形状部のうち第２形状部を連結する。第２狭小部は、３つの形状部のうち第２形状部を３つの形状部のうち第３形状部と連結する。第１狭小部は、第１形状部の第１表面が第２形状部の第１表面に対して第１角度になるように軸を中心に捩れる。第２狭小部は、第２形状部の第１表面が第３形状部の第１表面に対して第２角度になるように軸を中心に捩れる。【選択図】図２Ａ
