Konnichi wa,
The Translation would be: カテーテル., or コンドームのカテーテル
But I can tell you that Condom Catheters are available online...no prescription needed...Can't give a reccommendation on which type is best...trial and error would be my guess...They are fairly inexpensive so get a few different kinds and see which works best. Adult Diapers are also an option unless you are trying to measure the urine? Is he actively bein treated in Japan? Does he have a Stage and Grade?
Good luck to you FIL
jaa mata,
Karen
Caregiver for my Wonderful Husband Angelo, who has Metastatic Bladder Cancer.
Life isn't about how to survive the storm, but how to dance in the rain.