In order to prevent the wound healing, workers will stimulate it now and again. They also put a 10-kilogram iron vest on the bears to prevent them from tearing away the catheters.

为了防止伤口愈合，人们会不时挑拨创口，为阻止黑熊自己拨开抽管，还会给它们穿上重达10公斤的铁马甲。