Medrad Mark 7 Arterion, Руководство по эксплуатации

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Using and Understanding the Injector Head
7 - 35
closed. An operator can remove the syringe from the piston rod at any point within the normal travel of
the piston by rotating the syringe 1/4 turn clockwise, while the Injector Head is powered on or off, and
without removing the disposable set from the syringe.
7.3.1 Piston Auto Retract
The Mark 7 Arterion Injection System has an auto retract option that automatically retracts the piston
when the Injector Head is in the Purge position. Below are the two scenarios that describe how this
feature functions when the Injector Head is in the Purge Position or in the Intermediate and Inject
Positions (see
"7.2 - Injector Head Position" for a description of the positions).
• Purge position - The operator lowers the drop front and removes the syringe. The Injector
Head beeps three times and auto-retracts to the syringe ready position.
• Intermediate and Inject Positions - The operator lowers the drop front, removes the
syringe, and rotates the Injector Head into the Purge (upright) position. The injector Head
beeps three times and auto-retracts to the syringe ready position.
NOTE:
Press any key on the Injector Head to halt the auto retract.
NOTE:
Enable the auto retract feature from the Options tab. See "6.4 - Options Tab" for
more information.
7.4 Pressure Jacket
The Mark 7 Arterion has a Pressure Jacket designed to hold the syringe in place and help to maintain
syringe integrity during use.
Figure 7 - 3: Pressure Jacket
The Pressure Jacket is manufactured from high impact resistant material; however, sharp impacts
such as from dropping, may cause small barely visible cracks to form, which may propagate during
subsequent pressure cycles.
7.4.1 Pressure Jacket Storage
When not in use, the Pressure Jacket should remain securely attached to the Injector Head.
Alternatively, the Pressure Jacket may be wrapped in a cloth and stored where it will not be hit or
dropped.
After each procedure, check the Pressure Jacket for contrast build up. For Pressure Jacket cleaning
and maintenance, see
"Chapter 15 - Cleaning and Maintenance" .