Transanal Hemorrhoidal Dearterialization (THD) is implemented for symptomatic internal hemorrhoids that fail conservative management. During this incisionless, minimally invasive procedure, the surgeon restricts the affected blood vessels with Doppler-guided technology and sutures. It is performed above the dentate line without the excision or “cutting” of tissue, so patients experience less pain and discomfort.
THD uses a doppler to locate the branches of the hemorrhoidal arteries that need to be terminated. Once the artery is located, the surgeon uses an absorbable suture to ligate or “tie-off” the arterial blood flow and the venous “out flow” remains to “shrink” the cushion. Each hemorrhoid requires four to six stitches, placed in precise locations to simply impede blood flow, without excising tissue.
