6
en
DANGER
Injury to spinal cord and nerve roots caused by application of a drill
that is too long!
►
Use the X-ray image to select an appropriate drill length prior to
the operation.
►
Drill may only be aligned and inserted under radiographic control
and/or with the aid of a navigation system.
►
Select a drill of a length equivalent to the intended drill hole depth.
►
Insert drill in the drill handle (FJ839R), see Fig. 3.
►
Retract and hold locking sleeve against the spring pressure in the direc-
tion of the arrow.
►
Push the drill into the receptacle of the drill handle as far as it will go
►
Lightly rotate the drill and release locking sleeve.
The drill engages audibly.
Fig. 3
Assembling the drill
DANGER
Risk of injury and/or damage to the drill if the drill rotation speed is
too high!
►
Use the lowest drilling speed possible, so that you can control the
drilling depth.
►
Do not bend the drill during the drilling process.
2.3.3
Drilling holes for S
4
C screws
Ø
3.5 mm/4.0 mm
WARNING
Risk of injury to patients due to incorrect navigation!
►
Observe the combination specifications
For controlled drilling of the holes for S
4
C screws
Ø
3.5 mm with drill
Ø
2.4 mm
R
(FW666SU), the S
4
C navigated drill guide
Ø
3.5 mm
F
(FW664R) must always be used.
For controlled drilling of the holes for S
4
C screws
Ø
4.0 mm with drill
Ø
2.9 mm
S
(FW667SU), the S
4
C navigated drill guide
Ø
4.0 mm
G
(FW665R) must always be used.
S
4
C navigated drill guide
G
and drill
Ø
2.9 mm S have a purple marking on
the shaft for the self-tapping S
4
C screws
Ø
4.0 mm screws, see Fig. 4.
Fig. 4
Purple marking on S
4
C navigated drill guide and drill
Note
The drill
Ø
2.4 mm (FW051SU) and
Ø
2.9 mm (FW052SU) must not be used
with S
4
C navigated drill guide
F
/
G
.
►
For mounting the reflective Brainlab marker spheres
4
onto Aesculap
star unit
H
, see Brainlab user manual.
►
Retract and hold locking sleeve
1
of the Aesculap star unit
H
against
the spring pressure in the direction of the arrow.
►
Aesculap star unit
H
is then pushed onto adapter
2
of the S
4
C drill
guide
F
/
G
. When doing so, ensure that the pin
3
of the adapter engages
in the recess on the star unit.
►
Release locking sleeve
1
.
Fig. 5
Mounting the Aesculap star unit on S4C drill guide
FW664R/FW665R
►
Prior to each use, check and/or validate the instrument with the
Brainlab instrument calibration matrix version 4, see Brainlab user
manual. When doing so, ensure that the drill
R
/
S
is removed.
►
To ensure that the camera has an unrestricted view of the reflective
marker spheres, loosen knob
6
on the handle of the S
4
C drill guide
F
/
G
and rotate Aesculap star unit
H
to the desired position, see Fig. 2.
►
Once the desired position is reached, tighten knob
6
again.
►
Adjust the drill depth by turning the depth stop
5
on the S
4
C drill
guide
F
/
G
.
►
The scale is in mm. Each half turn on the depth stop moves a distance
of 0.5 mm.
►
Insert the drill with mounted handle or Intra-handpiece into S
4
C drill
guide
F
/
G
.
►
Before drilling, the pre-set drill length must be checked with a caliper
(e.g. AA845R, Caspar instrument for anterior cervical fusion).
►
Drill to the pre-set depth under control with the Brainlab navigation
system.
Click
S
G
1
4
F/G
H
6
2
3
R/S
Содержание Aesculap S4 Cervical
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