Components and Functions (Theory)
5-18
Invenia ABUS 2.0 – System Setup and Basic Service Manual
4700-0043-00 Rev. 4
The Scan Head holds the Ultrasound Transducer and contains
the mechanism that moves the Transducer horizontally in a
scan. It also has a lower portion having a magnetically-attached
mesh screen to compress the breast tissue. The Scan Head
arms enables position adjustment and have operator control
pushbuttons.
Scan Arm parts functions
The Scan Arm Lower Tube (1) and Upper Tube (3) provide
mechanical support for the Scan Head (5). The tubes are hollow
and contain cabling to the Scan Head.
The bottom of the Lower Tube passes through a guide tube
inside the Weight Tower; this allows the Lower Tube to slide up
or down. The Lower Tube bottom is attached to a weight
counterbalancing assembly, which enables the whole Scan Arm
to be raised or lowered easily by an operator. The weight
assembly also provides compression adjustment functions.
Hinge assembly
The top of the Lower Tube holds the Hinge Assembly (2) that
enables horizontal rotation (swiveling) of the Upper Tube around
its vertical center. The hinge moves freely, but is not loose and
unstable. The hinge does not lock.
Ball Joint
The bottom of the Upper Tube supports the Ball Joint assembly
from which the Scan Head hangs. The purpose of the Ball Joint
is to enable the operator to swivel the Scan Head, and for the
system to lock the Scan Head position before and during a scan.
The center of the Ball Joint is hollow to allow three cables to
pass through it: the transducer cable and two smaller control
board cables. If there is damage to a cable, it is not singly
replaceable-instead, the entire Scan Arm must be replaced as a
unit.
The Ball Joint can be disassembled but due to complexity is not
field serviceable. Disassembly is not recommended.
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