Problem
Atherectomy is a procedure that uses minimally invasive techniques to clear blocked blood vessels. The removal of plaque is generally accomplished with either abrasive mechanical tools or nanosecond lasers - both of which have potential risks. Abrasive tools, with their sharp parts, can cause physical harm. Nanosecond laser-based devices are easier to use, however they rely on interplay of absorption properties of tissues with potentially harmful ultraviolet radiation. Treating highly calcified plaque with a nanosecond laser is particularly challenging as it requires very high power that could damage nearby tissue due to heat. Injury to blood vessels increases the chance of plaque returning after treatment. Hence, there is a pressing need for a safer and more efficient treatment method for calcified plaque in vascular diseases.
