Medtronic Valiant Navion Gebrauchsanweisung Seite 23

1. FreeFlo configuration
2. CoveredSeal configuration
3. Pull the tip capture release handle back in a smooth motion until the tip capture mechanism is released and the proximal
end is completely open (Figure 10). Observe the proximal end opening under fluoroscopy and confirm that the stent graft
has been completely deployed.
1. FreeFlo configuration
2. CoveredSeal configuration
Note: In the unlikely event that the proximal end cannot be deployed, and resistance is felt in the tip release handle, it may
be necessary to pull back further on the delivery system to relieve forward pressure. If the tip release handle slides freely
and the proximal end cannot be deployed, refer to Section 10 (Troubleshooting techniques).
Caution: Keep the delivery system stationary while deploying the tip capture mechanism. Do not pull back or push forward
on the delivery system while deploying the tip capture mechanism, as it may cause the entire graft to move or cause the tip
capture mechanism to get caught on the proximal stent.
9.9. Removing the delivery system
Caution: Carefully monitor any delivery system movement and the retrieval of the delivery system tapered tip with fluoroscopy
to ensure that delivery system does not inadvertently cause movement of the Valiant Navion thoracic stent graft from its
deployed location.
Note: The guidewire may be repositioned (retracted slightly) to allow the delivery system to assume a more centralized position
in the aorta, which may aid in system closure and retraction.
Caution: It may be necessary to pull the entire delivery system back into a straight section of the aorta to aid in the closure of
the delivery system.
Figure 9. Unlocking the tip capture release handle
Figure 10. Deploying the tip capture mechanism
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Instructions for Use English 21