But London Zoo officials later identified the creature as a North American Jungle Cat after a plastercast was taken from paw prints made in a forest near Port Talbot.
Often, in the case of jaw or face plates, the only way to make the mould is to take a plastercast of the outside of the patient's head, says Dr Richards.
The new gown can be adapted for many forms of surgery and post-operative care needs, including heart surgery, the insertion of a neck line or hernia repair, or accessing a plastercast on a broken arm, the hospital said.