| 摘要 |
A vascular closure delivery system for closing a tissue wall opening is p rovided. In one embodiment, the vascular closure delivery system comprises a suturing apparatus, a suture delivery unit (100) and a suture knot system ( 300). The suturing apparatus and suture delivery unit (100) comprises at lea st one tube (120), at least one leg (110), a tensioning device (115), a push er (130), a suturing apparatus (140), and an actuator (112, 113, 230). When the leg (110) is in an open position, the tensioning device (115) exerts ten sion on the leg such that the leg can move with respect to the tensioning de vice, and the pusher and suturing apparatus are in an delivery configuration for delivery of the suturing apparatus to the internal tissue wall. Further , actuation of the actuator (113) moves the pusher (130) towards the expulsi on ~ end of the tube such that the suturing apparatus engaging end of the pu sher engages the suturing apparatus and expels the suturing apparatus from t he tube. |
