T bandage; T-shaped bandage
A medical bandage shaped like the letter T, used for securing dressings, especially in the perineal area.
After the surgery, a T bandage was applied to the patient.
From 丁字 (ていじ, 'T-shape', literally 'T character') + 帯 (たい, 'bandage'). The term describes the shape of the bandage.