Title. CUSA is an abbreviation for the first letters of the term Cavitation Ultrasound Surgical Aspirator. It refers to a class of surgical devices for so-called ultrasonic surgery. It is also the name of the CUSA™ ultrasonic destructor, which until 2006 was manufactured by ValleyLab, USA, and since 2006 by Integra LifeSciences, USA. The new manufacturer replaced the aspirator part of the name with ablator, calling the device the Ultrasonic Tissue Ablation System, which, in fact, more accurately reflects the content of this surgical method.
The principle of operation of CUSA devices is based on the cavitational destruction/fragmentation of living cells of various tissues containing a large amount of fluid by means of ultrasonic exposure with a frequency of more than 20,000 Hz, carried out by direct mechanical contact of a vibrating metal rod with the surface of living tissue. Upon contact with the oscillating rod, cavitation cavities appear in the cytoplasm of the cell, which cause the cell to burst with the rupture of the cell membrane. At the same time, only cells protected by collagen and elastin fibres, which effectively absorb ultrasonic waves due to deformation, remain intact. This property of cavitation cell destruction has an undoubted advantage: it makes it possible to remove soft biological tissues without damaging their connective tissue skeleton, namely blood vessels and ducts. This method of destruction makes it possible to perform surgical operations with virtually no bleeding at the boundary of the density of two different types of tissue.
CUSA Clarity - is a new generation of ultrasonic disruptors for fast, safe tumour removal and tissue dissection. Only the CUSA system has four unique technologies that allow for a fast and efficient surgical procedure.
The system has a number of new and unique technologies:
- TissueSelect tissue selective modes for preserving blood vessels and nerves
- Fibrous tissue removal with 160% is faster than with analogues
- Bone removal with 60% is faster than with analogues
- Powerful universal fragmenters for safe and efficient work
- Intuitive touchscreen interface
- Quick, easy system setup and operation
- Flexible platform for future technologies such as bone scalpel, etc.
- Remote system diagnostics
Clinical application
- Neurosurgery is the removal of various tumours of the brain and spinal cord, as well as spinal tumours.
- General surgery - liver resection and transplantation, resection of other parenchymal organs, vascular surgery.
- Orthopaedics - removal of bone tumours and osteophytes, bone machining.
- Cosmetology - removal of soft and hard tissues, bone processing, while preserving blood vessels and nerves.
Technical characteristics:
- Power supply 100-240 V, 50-60 Hz
- Nom. Power 480 VA
- Weight 29.5 kg
- LxWxH 457 x 349 x 493 mm
- Irrigation rate from 2 to 20 ml/min
- Fast flushing 25 ml/min
- Suction system Up to 640 mm Hg (sea level)
- Frequency range 22.5-23.5 kHz; 35.55-36.25 kHz
- Maximum tip amplitude Up to 422 microns (23 kHz); up to 210 microns (36 kHz)
