Step 1: Match each eponym to its defining manoeuvre, then find the one that removes the fimbria.
Step 2: Kroener method = excision of the fimbrial end of the tube, which is precisely the meaning of fimbriectomy. That settles the answer.
Step 3: For contrast, Uchida raises a subserosal saline bleb before excision, Irving ligates and buries the proximal stump, and Madlener simply crushes a tubal loop with an artery forceps. Only Kroener equals fimbriectomy.
\[\boxed{\text{Kroener method}}\]