RAFIA DE ASA DELGADO A CUÑA

Homework / test Spanish to English Medical Medical: Instruments surgery

Term is for a medical report re: for Meckle Diverticulum surgery. I believe it is either a procedure or an instrument. I have not been able to find either. What I have translated so far is: "thin loop raffia by wedge" but I am almost 100% certain this is not correct. Help!!! Thanks!