Overview; Fragmentation; Tip Motion; Cooling - Integra Cusa Excel Service Manual

Overview

Overview

Fragmentation

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The CUSA EXcel system is an ultrasonic surgical aspirator that allows a surgeon
to remove tissue—selectively and with precise control—from the body. It
performs three functions:
• Fragmentation
• Irrigation
• Aspiration (suction).
All three functions may occur at the same time.
The CUSA EXcel system includes the following components:
• The console:
The console body houses electronics, pumps, and other parts that make the
system work.
The control panel allows the user to control the system.
• The handpiece is the handheld surgical device that actually touches the
patient.
• Accessories include a variety of items; for example, manifold tubing, a large
selection of tips, a tip torquing base and torque wrench, and a sterilizer case.

Tip Motion

Fragmentation occurs when the vibrating tip interacts with tissue. As the tip
begins to move toward tissue, it accelerates, impacts the tissue, then penetrates
the tissue. The acceleration, impact, and penetration produce a combination of
direct mechanical forces and hydrodynamic pressures that burst cells.
For more information on how the handpiece works, refer to Section 6, Principles
of Operation, in this manual.

Cooling

The high frequency vibration generates heat. To reduce the heat, the CUSA EXcel
system includes a closed, recirculating cooling water system. This system pulls
water from a cooling water reservoir, through a tube in the handpiece cable,
through the handpiece, and through a return tube in the handpiece cable to the
cooling water reservoir. Cooling water flows at 35 to 50 cc/min.
As it passes through the handpiece, the water removes heat. Normal handpiece
temperature, in sustained heavy use, remains at about 40° C (104° F).
Use distilled water for the cooling water system because it does not contain
natural minerals, chemical additives, or organic materials that are present in tap
water. Any of these impurities in tap water can cause problems within the cooling
water system.
CUSA EXcel Ultrasonic Surgical Aspirator System Service Manual