CUSA® Excel Handpieces

System Overview The CUSA® NXT Ultrasonic Surgical Aspirator System facilitates the removal of tissue. The system provides selective tissue disintegration with simultaneous irrigation and aspiration. Intended Use The CUSA NXT Ultrasonic Surgical Aspirator System is indicated for use in surgical procedures where fragmentation, emulsification and aspiration of soft and hard (e.g. bone) tissue is desirable, including Neurosurgery, Gastrointestinal and affiliated organ surgery, Urological surgery, Plastic and Reconstructive surgery, General surgery, Orthopedic surgery, Gynecological surgery, Thoracic surgery, Laparoscopic surgery and Thoracoscopic surgery. Using this System in Ultrasonic Surgery The basic operating principle of ultrasonic surgery involves the longitudinal vibration of the hollow handpiece tip at ultrasonic frequency against tissue. The mechanical action of the tip is similar to a tiny “surgical hammer” that breaks off cellular material. When the tip contacts the fluid filled tissue, the resulting slurry of emulsified material from the tissue is aspirated through the center of the handpiece. A slow flow of irrigant around the tip assists in the removal of waste tissue. The selective action of the instrument arises from the disruption of fluid containing cellular material while fibrous and elastic tissue such as nerves and blood vessels remain relatively unaffected at the ultrasonic frequencies used.