A refill head, and an oral care implement including the same, wherein the refill head comprises a tubular sleeve having a cavity. First and second upper cam surfaces are provided in the cavity that form transverse shoulders within the cavity. The first and second upper cam surfaces are separated by first and second axial slots through which first and second bosses of a stem of a handle of the oral care implement can be passed.一種置換頭部和包含置換頭部的口腔保健用具,其中置換頭部包含一具有腔室的管狀套管。第一和第二上凸輪表面被提供於該腔室中,形成腔室內的橫向肩部。第一和第二上凸輪表面被第一和第二軸向卡槽隔開,口腔保健用具的握把之插桿的第一和第二凸輪轂可被通過第一和第二軸向卡槽。1000‧‧‧電動牙刷100‧‧‧置換頭部110‧‧‧刷頭部120‧‧‧管狀套管121‧‧‧近位端122‧‧‧內腔室123‧‧‧開口150‧‧‧凸輪軸環180‧‧‧牙齒清潔元件182‧‧‧遠位端200‧‧‧握把210‧‧‧夾持部220‧‧‧插桿221‧‧‧驅動輪222‧‧‧偏心輪223‧‧‧遠端部224‧‧‧環形軸承225‧‧‧內部腔室227‧‧‧外表面229‧‧‧第一凸輪轂230‧‧‧第二凸輪轂231‧‧‧插頭部232‧‧‧肩部
