| 主权项 |
1. A stent graft introducer comprising:
a proximal end and a distal end, a handle at the distal end of the introducer and distal to the delivery catheter, and an elongate groove formed in the handle, a nose cone dilator, a delivery catheter comprising a proximal end and a distal end, extending from the handle to the nose cone dilator, a region between the delivery catheter and the nose cone dilator for retention of a stent graft therein, a stent graft disposed on the region, a sleeve extending over the delivery catheter and proximally to the nose cone dilator to cover the stent graft when retained in the region, and an indwelling auxiliary catheter comprising a pre-curved proximal end and a distal end, the indwelling auxiliary catheter extending from the nose cone dilator, through the delivery catheter, and out of the handle, the nose cone dilator comprising an elongate groove thereon and the pre-curved proximal end of the auxiliary catheter having its proximal end in the elongate groove in the nose cone dilator and at least a portion of the distal end of the auxiliary catheter in the elongate groove in the handle, the indwelling auxiliary catheter configured to receive a a guide wire therethrough, wherein when the sleeve is in a partially retracted position the pre-curved proximal end of the indwelling auxiliary catheter is exposed and in a curved configuration and is not covered by the sleeve and when the sleeve is in an advanced position the precurved proximal end of the indwelling auxiliary catheter is in a straightened configuration, extends along the groove in the nose cone dilator and is covered by the sleeve. |
