Section B: Post-Implantation Adjustment Procedure - Codman 82-8851 Manual Del Usuario

SECTION B: Post-Implantation
Adjustment Procedure
Adjust the valve at any time after the implantation
surgery. If needed, apply a sterile drape over the
incision site. The drape will not interfere with the
magnetic coupling of the adjustment procedure.
CAUTION: Excessive swelling or thick tissue
may make it difficult to determine and/or adjust
the performance setting. See Step 4 in this
section for instructions for using the Low Profile
Locator Tool in these instances. If difficulty
correctly positioning both Locator Tools persists,
wait until the swelling is reduced or confirm
the valve setting with x-ray. See SECTION C:
Troubleshooting and SECTION D: Confirming the
Current Valve Setting for more information.
1. Position the patient so that the implanted valve
and tools are horizontal, to optimize Indicator
Tool performance (see Figure 5).
CAUTION: If Indicator Tool is not horizontal,
an inaccurate reading might result.
2. Locate the valve by palpation. Palpate and mark
the center of the valve mechanism i.e., the hard
portion of the valve distal to the reservoir. Palpate
and mark the position of the inlet and outlet
connector barbs/catheters. (See Figure 6)
3. Select the appropriate Locator Tool
(Adjustable Height Locator Tool or Low
Profile Locator Tool). If the tissue in the
area of the valve is thick tissue or if edema
is present (>10 mm above the valve), use
the Low Profile Locator Tool (Figure 7).
Otherwise, use the Adjustable Height Locator
Tool. Optimal placement is achieved when the
selected Locator Tool is stable on the patient's
head and the tissue that covers the valve
mechanism is just below the cut-out in the
Locator Tool (Figures 8A & 8C).
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