Medtronic Valiant Navion Gebrauchsanweisung Seite 22

1. FreeFlo configuration
2. CoveredSeal configuration
Caution: When using the trigger to rapidly deploy the stent graft, ensure that the gray front grip remains stationary. Failure
to do so will cause movement of the stent graft and will result in inaccurate deployment.
Caution: Do not rotate the delivery system during deployment, as this may torque the delivery system and cause the stent
graft to twist during deployment.
Caution: Do not advance the Valiant Navion thoracic stent graft system when it is partially deployed and apposed to the
vessel wall.
Caution: Once the entire covered portion of the stent graft has been deployed, do not attempt to adjust the position of the
stent graft.
Caution: If the graft cover is inadvertently withdrawn, the stent graft will prematurely deploy and will be placed incorrectly.
Note: If necessary, the stent graft can be repositioned distally to the desired location by retracting it, as long as no more
than 2 of the proximal stents have been deployed. For stent grafts shorter than 90 mm, the stent graft can be repositioned
distally as long as no more than one of the proximal stents has been deployed.
Note: Deployment of the stent graft in the aortic arch can increase the deployment force. Deployment forces can be further
increased by excessive tortuosity and a small radius aortic arch.
Note: In the unlikely event of delivery system failure and concomitant partial stent graft deployment due to graft cover
severance, a "handle disassembly" technique may permit the successful deployment of the stent graft. Refer
to Section 10.1 (Partial stent graft deployment).
9.8. Deploying tip capture mechanism
1. Hold the delivery system stationary with one hand on the front grip. Relieve forward pressure before attempting to actuate
the tip release handle.
Note: Using the guidewire as an indicator, relieve forward pressure by pulling back the delivery system until the guidewire
lumen moves off of the greater curve.
2. With the other hand, rotate the tip capture release handle in the direction of the arrow (counterclockwise) to unlock the tip
capture release handle.
20 Instructions for Use
Figure 8. Deploying the remainder of the stent graft
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