9018.90.75.40 - Ultrasonic

This HTS classification covers therapeutic appliances and instruments that utilize ultrasonic waves for treatment purposes. Such devices are employed in a variety of medical applications, including diagnostic imaging, physical therapy, and surgical procedures, where the controlled application of high-frequency sound waves is central to their function. Examples include therapeutic ultrasound machines used for pain management, tissue healing, and breaking down kidney stones.

Within the broader category of "Other therapeutic appliances and instruments," this specific subheading, 9018.90.75.40, is distinguished by its exclusive focus on ultrasonic technology. Its sibling category, 9018.90.75.60, designated as "Other," would encompass therapeutic appliances and instruments that do not rely on ultrasonic principles for their operation. Therefore, the key differentiating factor is the underlying technology employed in the therapeutic application.

As this classification node is a leaf node, it does not have further subcategories. This indicates that all therapeutic appliances and instruments operating on ultrasonic principles, fitting the description, are classified directly under this subheading. When classifying goods, it is crucial to confirm that the primary mode of therapeutic action is indeed the generation and application of ultrasonic waves, rather than incidental use or incorporation within a larger apparatus.