Ultrasonic surgical system (SONOPET (R)) for microsurgical removal of brain tumors

We use the ultrasonic surgical system in the treatment of brain tumors such as meningioma, neurinoma, glioma, etc. SONOPET(R) is a useful and safe ult rasonic surgical system fbr microsurgery. The outer diameter of the lip of ultrasonic surgical systems is usually 2.5 mm and the inner diameter 2.0 mm . However, the outer diameter of the SONOPET(R) is 1.9 mm and the inner dia meter 1.5 mm. Even in a deep site, because of the small diameter tip, the o peration can be done easily. Further, the very thin outer diameter of the t ip flue, 5 mm, makes it easy to operate in the deep site. The maximum ampli tude of the distal end tip, which can be an important factor in tissue frag mentation, is 240 mu m. It is said that the thinner tip breaks down easily, but by reducing metal fatigue the lifetime of the rip is longer and a larg er amplitude can be obtained As a result, hard tissue fragmentation becomes available even with a thinner tip. The handpiece is very light in weight, approximately 110 g, helping to reduce operator fatigue when in long term u se. The weight is approximately one-half of conventional types. Because of the high efficiency of the electricity/vibration energy conversion rate, th e handpiece does not heat up during the operation. Also, since water coolin g is not necessary, the procedures before and after use are simple. Changin g the handpiece during the operation is also easy.