| 摘要 |
A multi-port stent graft delivery device (100) has an annular access lumen (107) between a delivery catheter (112) and a main sheath (106), at least one indwelling access sheath (118, 122) within the access lumen, and an indwelling guide wire (138, 146) within the or each access sheath and a stent graft (131) retained in the delivery device. Upon deployment of the stent graft into the vasculature of a patient the indwelling guide wire can be used to facilitate stabilisation of the access sheath during cathertisation of a side branch and deployment of a side arm covered or uncovered stent therein through the advanced access sheath. A two part handle enables withdrawal of a nose cone dilator before final placement of the side arm stents. A manifold (114) associated with a proximal handle portion provides a plurality of access ports (116, 120). |
| 主权项 |
1. A stent graft delivery device comprising a proximal delivery portion, a distal delivery portion and a handle assembly, the handle assembly comprising a proximal handle portion and a distal handle portion, the distal handle portion being movable longitudinally with respect to the proximal handle portion, a guide wire catheter extending through each of the distal handle portion, the proximal handle portion, and the distal delivery portion, the guide wire catheter being releasably affixed at a distal end thereof to the distal handle portion by a locking device and being affixed at a proximal end thereof to the proximal delivery portion;
the guide wire catheter, the proximal delivery portion, and the distal handle portion being movable longitudinally with respect to the proximal handle portion whereby the proximal delivery portion can be retracted independently of the distal delivery portion; a sheath arrangement comprising a sheath, the sheath arrangement being mounted onto the distal delivery portion and movable longitudinally with respect to the distal handle portion and the sheath extending proximally to the proximal delivery portion; the proximal delivery portion comprising a nose cone dilator, a distally facing capsule fixed to the nose cone dilator, a distal retrieval taper device in the capsule, the distal retrieval taper device being mounted onto the guide wire catheter and movable longitudinally with respect to the guide wire catheter, a distal retrieval catheter coaxially on the guide wire catheter and movable longitudinally with respect to the guide wire catheter, the distal retrieval catheter being fixed to the distal retrieval taper device at a proximal end and to the distal handle portion at a distal end whereby movement of the guide wire catheter with respect to the distal handle portion moves the distal retrieval taper device with respect to the distally opening capsule such that the distal retrieval taper device can move to a distal end of the capsule to extend from the capsule whereby to provide a smooth transition from the otherwise distal opening of the capsule to enable retraction of the nose cone dilator; a trigger wire situated at least partially outside the capsule, extending into the capsule via an aperture in the capsule wall, and further extending into the nose cone dilator via an aperture in the distal taper device.
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