| 摘要 |
The apparatus has a delivery shaft (30) bearing a tubular device constrained within a moveable sheath (36), and a handle comprising a hollow shaft (124) with a static grip (126) and a grip slider (122) movable proximally or distally. The grip slider is connected to a slider block (24) fixed to a sheath hub (6) to which the sheath is fastened. A retraction wheel (120) has a spool (2) for winding a retraction wire (121) connected to a retraction block (20) in contact with the slider block enabling the slider block to be pushed as the retraction block is retracted distally. Initial incremental movement of the retraction block by winding of the retraction wire, moves the slider block and retraction block simultaneously. Subsequently the slider block is movable independently of the retraction block using the grip slider, leaving the retraction block behind. |
