Covidien Signia Stapling System, User Manual

Page: 33 / 199

27
developed, predetermined force zones, the device will adjust its firing speed in each
zone to optimize staple formation.
If the stapler slows down during firing before the lower clamp cover reaches the distal
end, it is likely the firing force reached the force zone threshold and moved into the
next force zone level and the device firing speed was slowed to optimize stapling
performance.
Incomplete Firing
If the stapler stops firing before the lower clamp cover reaches the distal end, it is
likely the firing force measured reached the upper design limit of the stapling reload.
Carefully assess the tissue to determine whether to attempt to complete the firing.
PRECAUTION
When dividing major vascular structures, adhere to the basic surgical principles
of proximal and distal control.
If the stapler stops while firing:
1. Release the DOWN/FIRE button, and any other button or toggle that may be
pressed.
2. Inspect the stapling reload for an obstruction, excessively thick tissue, or for
completion of firing.
3. If continued firing is desired, attempt to complete the firing by pressing and holding
the DOWN/FIRE button until completion of firing.
4. If the stapler is unable to complete the firing, press UP on the toggle to RETRACT the
knife of the reload to the fully clamped position. Press and hold UP/OPEN again to fully
open the jaws of the stapling reload.
5. If unsuccessful in removing the stapling reload from the tissue, refer to the
Instructions for Use section to remove the reload. If that fails, follow the instructions
described in the Alternate Opening Procedure or in the Manual Retraction Tool
Procedure.
Alternative Opening Procedures
If the stapler failed to remove the stapling reload from the tissue, the following
procedures may be used to attempt to retract the knife and open the jaws of the
reload.
The alternative opening procedures can be performed using the existing power
stapler or with a new power stapler if a replacement power handle and sterile control
Instructions for Use