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Futuristic Medical Device Seals Punctures In Lungs
August 31, 2007 at 12:58 PM
Research News
This isn't a scene from Seattle Grace Hospital, the set of the popular television drama Grey's Anatomy, but from its real-life model, Harborview Medical Center. Engineers at the University of Washington are working with Harborview doctors to create new emergency treatments right out of Star Trek: a tricorder type device using high-intensity focused ultrasound rays. This summer, researchers published the first experiment using ultrasound to seal punctured lungs.
"No one has ever looked at treating lungs with ultrasound," said Shahram Vaezy, a UW associate professor of bioengineering. Physicists were skeptical it would work because a lung is essentially a collection of air sacs, and air blocks transmission of ultrasound. But the new experiments show that punctures on the lung's surface, where injuries usually occur, heal with ultrasound therapy.
"The results are really impressive," Vaezy said. He cautions that this is still in the early stages and the technique is not yet being tested on humans.
High-intensity focused ultrasound is now being investigated for a number of different treatments. It promises "bloodless surgery" with no scalpels or sutures in sight. Doctors would pass a sensor over the patient and use invisible rays to heal the wound. Researchers are exploring the use of high-intensity focused ultrasound - with beams tens of thousands of times more powerful than used in imaging - for applications ranging from numbing pain to destroying cancerous tissue.
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