B. Braun Aesculap Spine S4 Cervical FW086SU Gebrauchsanweisung/Technische Beschreibung Seite 12

Aesculap
4
S Cervical – Navigated Instruments
Instruments for Favored Angle screws
Risk of injury to patients due to incorrect naviga-
tion!
►
Observe the combination specifications
WARNING
Favored Angle instruments are marked with a gold-colored ring.
Serious complications for the patient can be caused
by incorrect positioning of instruments or implants!
►
Carry out operative steps with radiographic
DANGER
visualization.
►
When removing the obturator (FJ983R) and
during the further operating steps, ensure that
the S 4 C guide sleeve remains securely fixed in
place.
Drilling holes for Favored Angle screws
►
For mounting the reflective Brainlab marker spheres 4 onto Aesculap
star unit H, see Brainlab user manual.
►
Aesculapstar unit H is mounted onto S
∅ 3.5/4.0 mm K. When doing so, retract and hold the locking sleeve 1
against the spring pressure in the direction of the arrow.
►
Push the Aesculap star unit H onto adapter 2 of the S
When doing so, ensure that the recess is seated over the pin 3 of the
adapter.
►
Release locking sleeve 1.
1
2
K
3
4
15
Fig. 12 Mounting the Aesculap star unit onto the S
4
Inserting the S C inner drill sleeve
10
®
4
C navigated guide sleeve
4 C guide sleeve K.
H
K
L
16
6
4
C guide sleeve;
►
Prior to each use, check and/or validate the instrument with the
Brainlab instrument calibration matrix version 4, see Brainlab user
manual. Ensure that the inner drill sleeve L is mounted prior to this
check.
►
To ensure that the camera has an unrestricted view of the reflective
marker spheres, loosen knob 6 on the S
sleeve K and rotate Aesculap star unit H to the desired position, see
Fig. 12.
►
Once the desired position is reached, tighten knob 6 again.
►
Remove inner drill sleeve L from the S
►
Insert obturator (FJ983R) into the inner sleeve 15 of the S
sleeve K.
The obturator engages in the inner sleeve and can still be rotated.
►
4
Bring S C guide sleeve K with mounted obturator into the operating
field through the stab incision and position it in place.
►
Press the button 16 on the obturator (FJ983R) and withdraw the obtu-
rator from the inner sleeve 15.
►
If necessary, slide Apfelbaum trocar (FJ984R) into the inner sleeve 15
and insert into the bone to center punch the screw entry point.
►
Remove the trocar from the operating field.
►
Slide the inner drill sleeve L onto the inner sleeve 15.
The inner drill sleeve engages on the inner sleeve and can still be
rotated, see Fig. 12.
►
Insert drill for Favored Angle screws (FW088SU)with mounted handle
(FJ839R) or Intra-handpiece into the inner drill sleeve L.
►
Drill to the pre-set depth under control with the Brainlab navigation
system. The drill depth can be read on the scale on the inner drill
sleeve L.
Note
So as not to lose the entry opening, it can be helpful to keep the drill in the
drill hole, press the button 16 on the inner drill sleeve L and push down the
guide sleeve until it reaches the stop on the bone surface. Then remove the
drill and inner drill sleeve L from the S
►
Press the button 16 and remove the inner drill sleeve L from the inner
sleeve 15.
4
S C screws are self-tapping screws. However, if the bone quality is found
to be hard during the operation, the surgeon can also pre-tap the thread
4
with the S C tapper.
To prepare screw holes, insert the Favored Angle tapper ∅ 4 mm
►
(FW089R) into the inner sleeve 15 and tap. The drill depth can be read
on the scale on the tapper (Tap).
►
Turn the tapper (Tap) counterclockwise until it exits the bone.
4 4
C handle of the S C guide
4
C guide sleeve K.
4 C guide
4 C guide sleeve K.