Which device is commonly used as a cutting instrument for brain and liver resections?

The CUSA (Cavitron Ultrasonic Surgical Aspirator) device is commonly utilized as a cutting instrument for brain and liver resections due to its effective combination of ultrasonic vibrations and suction capabilities. This device operates by delivering high-frequency ultrasonic waves that create tiny bubbles in the tissue, which then implode, effectively fragmenting and emulsifying the tissue while simultaneously aspirating the debris. This method allows for precise cutting and removal of delicate tissues without damaging surrounding structures, making it exceptionally useful in critical areas such as the brain and liver.

In contrast, while an ultrasonic scalpel also uses ultrasonic technology, it is primarily designed for cutting and coagulating tissue rather than suctioning and removing it, which is crucial in resections. Laser surgery devices, though effective in various applications, are not as frequently used in resections where controlled tissue removal is necessary. Electrosurgical generators primarily use electric current to cut and coagulate tissue, but they lack the specific tissue emulsification capabilities of the CUSA, thereby making it less suitable for delicate resections in the brain and liver.