13. Return all tools to their proper locations in the
storage case to prevent damage.
Note: place the Low Profile Locator Tool
under the elastic webbing in the bottom of the
storage case and fully collapse the Adjustable
Height Locator Tool (see Figure 1B).
SECTION C: Troubleshooting
If there is difficulty in indicating and/or adjusting
the valve setting:
• To optimize Indicator Tool performance,
ensure that the patient is positioned so that the
valve is horizontal and the tool components are
used horizontally. See Figure 5.
• Use fluoroscopy or x-ray to locate the position
and orientation of the valve mechanism
for adjustment and/or to determine the
performance setting of the valve. A fiducial mark
may be helpful for this technique.
It may be challenging to get the correct position
of the Locator Tool above the implanted valve.
Consider using the Low Profile Locator Tool.
• Palpate to feel for the hard valve mechanism
and make sure the black lines on the Low
Profile Locator Tool are aligned with the center
of the valve mechanism.
• Mark the patient's skin in the center of the
valve mechanism between the two black lines.
Also mark the location of the valve barbs/
catheters on the proximal and distal ends. See
Figure 6. This will facilitate the proper position
and orientation of either Locator Tool above
the implanted valve.
• Make sure the black lines on the Locator Tool
line up with the mark for the center of the valve
mechanism and that the direction of flow arrow
is aligned with the marks for the proximal and
distal barbs/catheters.
If these remedial steps fail to rectify the problem,
replace the valve.
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