5.2 SHEATH RETRACTION - A HIGH FORCE IS REQUIRED TO RETRACT THE SHEATH AND DEPLOY
THE DEVICE
Potential Cause
High level of angulation of the sheath and
malleable shaft may result in excessive kinking of
the sheath. This can lead to higher deployment
forces being experienced during sheath
retraction.
Recommended Actions
Where high deployment forces are experienced,
applying a syringe like grip to the system can
provide greater control for the initial stage of the
retraction process.
The following steps may also resolve this issue.
1. Remove the system and inspect the sheath for
any excessive kinking.
2. Where possible straighten the delivery system
to remove the kinks.
3. Kinks can also be removed from the sheath
by using localised compression of the affected
area.
4. Repeat steps 1-3 until the deployment force
required has been reduced.
Note: Ensure one hand stabilises the handle.
The graft section should be moved forward thus
providing a longer length of handle to hold.
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