Publicité
Flex Arm Maintenance
Should the retractor arm seem less stiff than desirable,
even after full tightening of the t-handle, the problem
may be corrected as follows:
1. Turn the t-handle maximally counterclockwise, mak-
ing the arm fully loose (Figure 12).
Figure 12
2. While holding the chuck assembly with the ring and
little fingers of your non-dominant hand, hold the last
joints of the flex arm, closest to the dovetail block
between the forefinger and thumb of the same hand.
Use the dominant hand to turn the dovetail block clock-
wise to tighten or counterclockwise to loosen (Figure
13). This action is similar to screwing a nut on to a bolt.
NOTE:
For those surgical procedures which require
brain tissue retraction when a conventional skull clamp
is not used, as in the case of pediatric patients or
severe head trauma, the BUDDE Halo Brain Retractor
should be used in conjunction with the BUDDE Halo
Side Rail Support (REF# A-1067). Please see the
instruction manual for this product prior to use (Figure 14).
Figure 14
Figure 5
5. When correct positioning of the Halo ring is
achieved, tighten all four locking ring nuts securely with
the wrench. Tighten the locking ring nuts of the support
brackets first, then tighten those on the halo ring brack-
ets. (Figure 6)
Figure 6
6. Adjust the built-in handrest segment of the Halo ring
to the desired angle to maximize the operative field by
turning the halo hinge thumbscrews counter-clockwise,
then tighten the thumbscrews clockwise to secure the
handrest. (Figure 7). The Halo ring can be folded back
upon itself to create a second layer of retraction or
open up the front half of the operative field for even
greater exposure to the operative site (Figure 8).
Figure 13
Figure 7
Figure 8
CAUTION: Always be sure the two sets of sun-
burst teeth on the halo's hinge mesh properly.
Failure to do so may result in damage to the device.
NOTE: When positioning the patient for Posterior
Fossa approaches with the patient in the Park Bench
position, it is recommended that the halo ring's
adjustable segment be positioned to the inferior direc-
tion relevant to the patient. This allows the ring's
adjustable segment to be angled, so the halo ring can
be lowered closer to the operative site and avoid the
patient's shoulder.
Publicité
