Aim: The execution of a correct hemostasis in thyroid surgery is extremely important both for the recognition of the delicate anatomical structures surrounding the thyroid, and to avoid damage of the same with haemostatic maneuvers incongruous. The ultrasonic dissector, developed in ’90s, allows for adequate hemostasis of caliber vessels of diameter up to 3mm, and at the same time has a minimum...

We proposed a simple non-contact inspection method using laser ultrasonic technique to measure the thickness of surface-hardened layer. This measurement is based on dependence surface-wave velocity hardened layers. In this case, it essential with wavelength comparable However, not easy selectively generate surface waves desired wavelength. Thus we where are extracted bandpass electrical filters...