A biomedical engineering graduate student at Cornell University has created a miniature ultrasound device that could one day introduce a whole new level of home therapy for arthritis, injury and other painful ailments.
George K. Lewis' sleek blue-and-white device slips into a pocket and sends ultrasound waves deep into muscles via a coin-sized polystyrene pad.
This is the transducer, which converts electrical energy into ultrasound.
Lewis hopes that this model - possibly the world's smallest ultrasound device - can hit the marketplace and find itself in the pockets of millions of people.
Ultrasound is often used to relieve muscle and joint pain but requires patients to receive treatments in doctors' and physical therapists' offices.
Lewis' mini-machine would allow people to receive such treatment at home and work.
Lewis' latest prototype sends low-intensity energy in the form of ultrasound waves from the transducer into the body, which is gentle enough to be kept close to the skin for up to 10 hours.