Codman 82-8851 Manual Del Usuario página 35

4. Place the appropriate Locator Tool atop the
implanted valve so that the black lines are
aligned with the marked center of the hard valve
mechanism and the direction of flow arrow
aligns with the catheter barb marks (Figure 9).
Note: If using the Adjustable Height Locator
Tool, rotate the white outer ring to adjust the
height until the tissue that covers the valve
mechanism is just below the cut-out in the
Locator Tool to optimize the tool performance
(Figure 8C).
Note: If using the Low Profile Locator Tool,
ensure that the tissue that covers the valve
mechanism does not protrude through the cut-
out in the Locator Tool. If tissue is protruding
through the opening, gently hold the tool against
the head to see if the tissue stays below the cut-
out. If there is too much tissue protrusion, use the
Adjustable Height Locator Tool instead.
CAUTION: Failure to accurately position the
Locator Tool could result in an inaccurate
indication of the performance setting,
potentially leading to a false reading (i.e. an
incorrect number may appear in the window
of the Indicator Tool). The Locator Tool must
be precisely aligned with both the valve's
direction of flow and the center of the hard
valve mechanism for an accurate indication
reading. Alignment can be more challenging if
tissue thickness is >10 mm above the valve. In
these instances, verify the valve setting with
x-ray or fluoroscopy. Refer to SECTION C:
Troubleshooting and SECTION D: Confirming
the Current Valve Setting.
5. Fully seat the Indicator Tool into the Locator
Tool so that the red markings are aligned (Figure
10). You may hear a click when the tool seats.
The indicator tool will not rotate within the
locator tool when properly seated.
9