| 摘要 |
The apparatus has a delivery shaft bearing a tubular device such as a stent graft constrained within a moveable sheath 36, and a handle comprising a hollow shaft with a static grip and a grip slider 122 movable proximally or distally. The grip slider 122 is connected to a slider block 24 fixed to a sheath hub to which the sheath 36 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 24 enabling the slider block 24 to be pushed as the retraction block 20 is retracted distally. Initial incremental movement of the retraction block 20 by winding of the retraction wire 121, moves the slider block 24 and retraction block 20 simultaneously. Subsequently the slider block 24 is movable independently of the retraction block 20 using the grip slider 122, leaving the retraction block 20 behind. This allows the sheath 36 to be controlled by translational and rotational control means. |
