B. Braun Aesculap S4 Cervical, Инструкция по эксплуатации / Техническое описание

Страница: 9 / 43

7
en
2.3.4 Tapping (optional)
S
4
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
with the S
4
C tapper.
►
For tapping the drill holes for screws
Ø
3.5 mm with navigation, use
the S
4
C navigated tapper A .
►
For tapping the drill holes for screws
Ø
4 mm, use the standard tapper
without navigation (FW047R), see TA011984.
DANGER
Risk of tissue trauma when using the S
4
C tapper (A) and damage to
bone thread!
►
Prior to using the S
4
C tapper, ensure that the moveable sleeve of
the tapper retracts correctly.
►
For mounting the reflective Brainlab marker spheres 4 onto the refer-
ence star unit B (pre-calibrated), see Brainlab user manual.
►
Push the reference star unit onto the shaft 7 of the S
4
C tapper (Tap) A .
Ensure that the star unit is securely fitted onto the shaft of the S
4
C tap-
per (Tap).
Note
The star unit can be rotated on the shaft of the S
4
C tapper (Tap).
►
Retract and hold locking sleeve 8 against the spring pressure.
►
Push the S
4
C handle FW067R/FW165R onto the shaft of the S
4
C
tapper A .
►
Release locking sleeve 8 , see Fig. 6.
Check that the S
4
C handle is engaged.
Fig. 6 Mounting the reference star unit (“pre-calibrated”) and S
4
C han-
dle onto the S
4
C tapper
WARNING
Risk of injury to the patient!
►
Before use, ensure that the selected instrument has been correctly
assembled.
►
Ensure that the arrow on the underside of the reference star unit
(pre-calibrated) is pointing to the tip of the tool.
►
Prior to each use, check and/or validate the instrument with the
Brainlab instrument calibration matrix version 4, see Brainlab user
manual.
►
To tap the thread, hold the reference star unit B at the planned inden-
tations with one hand, and with the other hand screw in S
4
C thandle C
slowly and steadily under control with the Brainlab navigation system,
until the required depth is reached.
►
Use the scale behind the retractable sleeve of the S
4
C tapper to read
the depth during the tapping process,see Fig. 7.
Fig. 7 Tapper with readable thread depth
2.3.5 Position S
4
C screw under navigation and temporarily fix it in
place
DANGER
Risk of injury to the patient!
►
Use S
4
C screwdriver only with reference star unit ML for manual
calibration.
►
If you change screws, perform the calibration again.
►
To position S
4
C screws
Ø
3.5 mm and
Ø
4 mm with navigation, use S
4
C
navigated screwdriver D.
►
For mounting the reflective Brainlab marker spheres 4 onto the refer-
ence star unit ML E , see Brainlab user manual.
►
Push the reference star unit ML E onto the shaft 10 of the S
4
C
crewdriver D . Ensure that the star unit is securely fitted onto the shaft
of the S
4
C screwdriver.
Note
The star unit can be rotated on the shaft of the S
4
C screwdriver.
►
Retract and hold locking sleeve 8 against the spring pressure.
►
Push the S
4
C handle FW067R/FW165R onto the shaft of the
S
4
C screwdriver D .
►
Release locking sleeve 8 , see Fig. 8.
►
Check that the S
4
C handle is engaged.
Fig. 8 Mounting the reference star unit (“calibration with ICM 4”) and
S
4
C handle (FW067R or FW165R) onto the S
4
C screwdriver
Note
The S
4
C screwdriver is fitted with a self-retaining function to prevent the
S
4
C screw from falling out when it is passed to the surgeon.
►
Retract and hold the holding sleeve 12 on the S
4
C screwdriver D , see
Fig. 9.
►
Insert the tip of the S
4
C screwdriver D fully into the hexagon of the
screw 11 .
►
Release the holding sleeve 12 .
Ensure that the screw 11 is securely in place on the S
4
C screwdriver D
and that the polyaxiality of the screw 11 is blocked.
Fig. 9 Pick up the S
4
C screw with S
4
C screwdriver
4
9 8
7
B
A
C
B
A
4
E
D
8
10
C
E
12
11
E
C
D