Doppler guided hemorrhoidal artery ligation with mucopexy works by identifying select blood vessels supplying the hemorrhoids via ultrasound and precise closure of those vessels. HAL-RAR is effective for moderate (grades 2-3) and select severe (grade 4) hemorrhoids. The Trilogy by A.M.I is a wireless system which consists of a specialized anal scope fitted with a light, doppler, and a bluetooth connection to a speaker.
The concept of a wireless system provides improved mobility with 360 degree rotation and less ultrasound interference for better sound quality. The Trilogy unit provides the physician with a well lighted surgical field, with built in capabilities to easily identify the hemorrhoidal artery, for quick and clean ligation.