Heart valve sealing device and delivery device thereof

An exemplary valve repair device for repairing a native valve of a patient includes an expandable involution portion. One mating portion has an opening and an expandable portion configured to expand outwardly through the opening. An actuation element or actuation member engages the expandable portion to expand and retract the expandable portion. The other expandable mating portion has a central shaft, an actuation tube, and an expandable spacer. A first end of the expandable spacer is fixed to the central shaft. The second end of the expandable spacer is secured to the locking tube. Rotation of the actuation tube relative to the central shaft causes the expandable spacer to expand. 用于修复患者的天然瓣膜的示例性瓣膜修复装置包括可扩张对合部分。一个对合部分具有开口和被配置以通过开口向外扩张的可扩张部分。致动元件或致动构件接合可扩张部分以扩张和缩回可扩张部分。另一个可扩张对合部分具有中心轴、致动管、和可扩张间隔件。可扩张间隔件的第一端固定到中心轴。可扩张间隔件的第二端固定到锁定管。致动管相对于中心轴的旋转导致可扩张间隔件扩张。