Section D: Confirming The Current Valve Setting; Section E: Reading The Valve Setting With The X-Ray Overlay Tool - Codman Neuro CERTAS Manual Del Usuario

If these remedial steps fail to rectify the problem,
replace the valve.
SECTION D: Confirming the
Current Valve Setting
The setting of an implanted valve can be
determined by using the CODMAN CERTAS Tool
Kit, and following SECTION B: Post Implantation
Adjustment Procedure, Steps 1 through 6.
An alternate method is to x-ray the valve. A
proper x-ray is generated when the film is shot
perpendicular to the plane of the valve with the
non-implanted side of the patient's head resting on
the plate. The film must be taken in relation to the
valve and not the patient's anatomy. See Figure 13
for x-ray views of the valve at each setting.
When viewing the x-ray film or screen to confirm
the valve setting, use the X-Ray Overlay Tool
(See SECTION E: Reading the Valve Setting with the
X-Ray Overlay Tool, Steps 1–5).
SECTION E: Reading the Valve Setting
with the X-Ray Overlay Tool
See Figure 14.
Note: Position the X-Ray Overlay Tool flush
against the x-ray image.
1. Align RED centerline of valve on overlay with the
2. Ensure that the numbers on the overlay that
CODFR14061xx02svn.indd 14 CODFR14061xx02svn.indd 14
centerline of the valve x-ray under review. This
can be accomplished by aligning the proximal
and distal connectors of the x-ray image with
those on the overlay.
depict the performance settings are properly
oriented for viewing. In this orientation the right
hand side (RHS) marker red line extends to
the right of the RED centerline. This ensures
proper overlay orientation.
14
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