Experts at Harborview Medical Center and the University of Washington are refining an ultrasound device that seals punctured lungs without invasive surgery [1], reports Science Daily. Just hold it over the affected area and push a button:
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.
In this case, lenses focus the high-intensity ultrasound beams at a particular spot inside the body on the patient’s lungs. Focusing the ultrasound beams, in a process similar to focusing sunlight with a magnifying glass, creates a tiny but extremely hot spot about the size and shape of a grain of rice. The rays heat the blood cells until they form a seal. Meanwhile the tissue between the device and the spot being treated does not get hot, as it would with a laser beam.