A refill head, and oral care implement incorporating the same, wherein the refill head comprises a tubular sleeve having a cavity for slidably receiving a stem of a handle of the oral care implement. An aperture in the tubular sleeve defines a latch having a locking lug that operably mates with a locking lug of the stem to axially retain the refill head to the handle. A resilient material seals the aperture to provide increased rigidity to the latch.一種再充填頭部和包含再充填頭部的口腔保健器具,其中再充填頭部包含一具有腔室的管狀套管,用於可滑動地接納口腔保健器具的一握把的插桿。管狀套管中的一孔界定一閂,該閂具有一鎖定凸塊,該鎖定凸塊可操作地配合插桿的一鎖定凸塊而軸向保持再充填頭部於握把。一彈性材料密封孔而增加閂的牢固性。電動牙刷/口腔保健器具100‧‧‧再充填頭部110‧‧‧刷頭部111‧‧‧牙齒接合元件/牙齒清潔元件120‧‧‧管狀套管121‧‧‧腔室122‧‧‧近端軸向段/近端部123‧‧‧中間軸向段124‧‧‧遠端軸向段126‧‧‧外表面130‧‧‧彈性材料141‧‧‧開口160‧‧‧閂161‧‧‧鎖定凸塊170‧‧‧軸向肋200‧‧‧握把210‧‧‧夾持部220‧‧‧插桿221‧‧‧內表面222‧‧‧外表面223‧‧‧近端部224‧‧‧遠端部225‧‧‧近位端226‧‧‧遠位端227‧‧‧偏心輪228‧‧‧驅動軸229‧‧‧環形軸承230‧‧‧鎖定凸塊231‧‧‧上表面(鎖定凸塊)232‧‧‧下表面(鎖定凸塊)233‧‧‧遠端部234‧‧‧內腔室235‧‧‧中間部250‧‧‧對齊插頭260‧‧‧振動元件1000‧‧‧電動牙刷
