16
Operative Technique
Pin Removal
Step 1
The arrowed end of the Inner Extractor
is engaged with the inner pin’s thread
and rotated clockwise until it stops
(Fig. 18).
Step 2
The Outer Extractor is slid over the
Inner Extractor until it is in contact
with the outer pin (Fig. 19).
Note:
If the Outer Extractor is not in
contact with the outer body of
the Hansson Pin, rotate the
Outer Extractor
only until it
engages the flat sides of the
Inner Extractor
and push
the handle gently until it touches
the tip of the outer body.
It is important not to exert any
rotation on the Outer Extractor
when the instrument is keyed
by the flat sides of the Inner
Extractor.
Step 3
Maintain the Outer Extractor in place.
Insert the threaded tip of the Extractor
Handle into the Outer Extractor and
turn it clockwise to engage the
threaded part of the Inner Extractor
Do not rotate the Outer Extractor.
See step (1) in figure 20.
Continue to turn the Extractor Handle
until a mechanical stop is felt.
This completely withdraws the hook
into the outer pin.
Check under image intensification
that the hook is fully retracted prior
to pulling back the implant.
Once the hook is fully retracted,
remove the implant along with the
extraction instruments.
See step (2) in figure 20.
In case the hook is removed on its
own, leaving behind the outer pin, the
outer pin is removed by assembling the
Inner and Outer Introducers and
removing the outer pin from the bone.
Fig. 18 – Engage Inner Extractor with Inner Pin
Fig. 19 – Key Outer Extractor over Inner Extractor
Fig. 20 – Insert and turn Extractor Handle
(1)
(2)
