(Sensor Products Inc.: Madison, NJ) –– Ultrasonic welding is a joining technique that uses high-frequency ultrasonic acoustic vibrations to create solid-state welds. Ultrasonic welding is often used in the medical device industry because it doesn’t introduce contaminants into the weld.

Machines and devices manufactured with ultrasonic welds can be specified for use in hospital and laboratory clean rooms. Items such as dry-powder inhalers, arterial blood and anesthesia filters, IV catheters, face masks, pouches, and many other products can be made with ultrasonic welding. Ultrasonic welding is used in medical sensors with microcircuits for monitoring the hearts of bypass patients, and in medical devices that are made through injection molding.

Blister packaging can also be made with ultrasonic welding.

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