Valleylab CUSA EXcel-8 - Page 77

How the Handpiece Works
How the Handpiece Works
The handpiece converts electrical energy to mechanical energy, resulting
in vibration in the handpiece, and from the handpiece through a
connecting body to a hollow titanium tip. When it contacts tissue, the tip
fragments the tissue. The conversion of electrical energy to mechanical
energy generates heat; a cooling system reduces the heat in the handpiece.
Figure 6-1.
The handpiece components
irrigation
solution
irrigation
connection
Suction
Handpiece
clip
Transducer
Handpiece
cable
Cooling
water out
Coolin
water
i
Retainer
Clip
Handpiece
housing
Electromechanical Operation
The CUSA EXcel console provides alternating current at 23 or 35.75
thousand cycles per second (kHz) to the handpiece (the frequency
depends on which handpiece you connect to the console). In the
handpiece, the current passes through a coil, which induces a magnetic
field. The magnetic field excites a transducer of nickel alloy laminations,
resulting in an oscillating motion in the transducer laminated structure—
vibration—along its long axis. The transducer vibrates at 23 or 35.75 kHz.
6-2
CUSA
EXcel-8
System
Service
Manis