Làn sóng các địa chỉ những mối quan tâm của thế hệ nhiệt và ổn định thính phòng với sự ra đời của công nghệ mang tính cách mạng "Sonic" và cao sức đề kháng "SuperVac" cuộn ống. Sonic công nghệ cung cấp một phương tiện sáng tạo của loại bỏ vật liệu cataractous mà không có thế hệ của nhiệt | Chapter 24 The Staar Sonic Wave 223 Fig. . The tip undergoes compression and expansion continuously changing its dimensional length. Heat is generated due to inter-molecular friction Fig. . The tip moves back and forth without changing its dimensional length. Heat due to intermolecular friction is eliminated nology that has received extensive attention for improvement has been the attempt to maximize anterior chamber stability while concurrently yielding larger amounts of vacuum for lens removal. The Wave addresses these concerns of heat generation and chamber stability with the advent of its revolutionary Sonic technology and high-resistance SuperVac coiled tubing. Sonic technology offers an innovative means of removing cataractous material without the generation of heat or cavitational energy by means of sonic rather than ultrasonic technology. A conventional phacoemulsification tip moves at ultrasonic frequencies of between 25 and 62 kHz. The 40-kHz tip ex pands and contracts 40 000 times per second generating heat due to intermolecular frictional forces at the tip that can be conducted to the surrounding tissues Fig. . The amount of heat is directly proportional to the operating frequency. In addition cavitational effects from the high-frequency ultrasonic waves generate even more heat. Sonic technology operates at a frequency much lower than ultrasonic frequencies. Its operating frequency is in the sonic rather than the ultrasonic range between 40 and 400 Hz. This frequency is lower than ultrasound resulting in frictional forces and related temperatures that are proportionally reduced. In contrast to ultrasonic tip motion 224 Fig. . Phacoemulsification tip in sonic mode being grasped with an ungloved hand demonstrating lack of heat generation Fig. . High-magnification view of SuperVac coiled tubing E o s o o tn Vacuum mmHg ----Regular Tubing ----SuperVac Tubing Fig. . When braking occlusions regular
