Bard Covera Gebrauchsanweisung Seite 6

Figure 5
NOTE: Do not retract the red safety lock until the covered stent is positioned across the lesion and ready to be
deployed.
Delivery System Introduction
11. Under radiographic guidance, advance the delivery system over the guidewire past the target lesion and then pull back
slightly on the entire system to attain correct positioning of the radiopaque markers. Use the radiopaque covered stent ends
to center the covered stent across the lesion (Figure 6).
Figure 6
NOTE:
Ensure the selected covered stent length covers the entire lesion and both ends of the implant extend at least 5 mm into the
non-diseased segment of the vessel.
For covered stent placements in the proximal cephalic arch select the length such that the ostial lesion is fully covered and that
the proximal covered stent end does not compromise the flow in the axillary / subclavian vein. Ensure that the covered stent end
extends at least 10 mm beyond the arch curvature into the straight distal cephalic vein segment.
Covered Stent Deployment
12. Prior to covered stent deployment, unlock the red safety lock (Figure 7) by pressing down and pulling it back towards the
end of the grip from the locked position into the unlocked position
retracted and that the symbol for the unlocked position
Figure 7
13. With your free hand, maintain a stationary hold on the white stability sheath during covered stent deployment and adjust
for placement accuracy if necessary (Figure 8). Hold the white stability sheath as close as possible to the introducer without
touching the dark brown moving catheter of the distal catheter assembly. Maintain the remainder of the white stability
sheath (segment between left and right hand on illustration) relaxed and avoid tension.
. Ensure that the red safety lock is completely
is fully visible.
Figure 8
IMPORTANT:
Do not touch the distal catheter assembly (i.e. the dark brown catheter segment) during covered stent
deployment since this may interfere with covered stent deployment and may lead to misplacement (Figure 9).
Figure 9
14. Slowly and carefully activate the covered stent release mechanism by rotating the large wheel on the top of the handle backwards.
NOTE: For accurate placement, subtle repositioning may be performed during initial wheel activation while
the covered stent is still compressed in the catheter.
After deployment of approximately 15 mm, wait several seconds to allow the distal end of the covered stent to fully expand.
Ensure the covered stent has wall apposition before completing deployment (Figure 10).
Figure 10
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