Obsidian – a type of volcanic glass – can produce cutting edges many times finer than even the best steel scalpels. At 30 angstroms – a unit of measurement equal to one hundred millionth of ...

The ultrasonic scalpel vibrates 22,500 times a second, which allows it to ram through bone like a jackhammer. But it bounces off soft flesh, leaving blood vessels, nerves and other delicate tissues ...

Among the study group, 49 children and their parents were given pricing information and told that open surgery – the traditional procedure performed with a scalpel – averaged ... will take costs into ...