A biological sterilization indicator is disclosed that in some embodiments comprises a housing having a first enclosure and a second enclosure, an ampule containing a liquid growth medium, and an insert disposed at least partially in the first enclosure. A portion of the ampule may be disposed inside the first enclosure. The insert may have a platform including a top surface, an abutment surface, and a side surface, as well as a first void disposed in the platform and configured to allow passage of a first volume of the liquid growth medium into the second enclosure and a second void disposed through at least a portion of the side surface and configured to allow passage of a second volume of the liquid growth medium into the second enclosure. The second void of the insert may be an angled cut through the abutment surface and the side surface, which may be disposed entirely beneath the top surface. In some embodiments, stress concentrators and other features are included to reduce the force required to activate the biological sterilization indicator.揭示一種生物滅菌指示器,在一些實施例中,其包含:一殼體,其具有一第一包殼及一第二包殼;一安瓿,其含有一液體生長介質;及一插件,其至少部分地設置在該第一包殼中。該安瓿之一部分可設置在該第一包殼內部。該插件可具有:一平台,其包括一頂部表面、一鄰接表面、及一側表面;以及一第一空隙,其設置在該平台中且經組態以允許一第一體積的該液體生長介質通過進入該第二包殼中;及一第二空隙,其設置穿過該側表面之至少一部分且經組態以允許一第二體積的該液體生長介質通過進入該第二包殼中。該插件之該第二空隙可係一斜角切口,其穿過該鄰接表面及該側表面,該斜角切口可完全設置在該頂部表面之下。在一些實施例中,包括應力集中件及其他特徵以減少啟動該生物滅菌指示器所需的力。A-A‧‧‧線100‧‧‧自供式生物指示器/SCBI102‧‧‧殼體104‧‧‧帽蓋/殼體108‧‧‧外表面110‧‧‧通孔112‧‧‧凸部114‧‧‧側壁116‧‧‧內側壁118‧‧‧外側壁120‧‧‧底壁122‧‧‧內底壁124‧‧‧頂部部分126‧‧‧外底壁128‧‧‧底部部分130‧‧‧撐體136‧‧‧第一包殼138‧‧‧第二包殼140‧‧‧載體142‧‧‧安瓿146‧‧‧插件170‧‧‧突出物/應力集中件180‧‧‧應力集中件190‧‧‧應力集中件
