Skin care

Four days ago, my husband accidentally pulled out the needle going from his chemo pump to his IV port.  When the needle goes into the port, the nurses put a film bandage over it.  The chemo dripped out and condensed under the film.  We did not realize what happened for a few hours.  By that time, his skin was significantly damaged.  Four days later, there are still open sores on his skin around his port.  We've used all the creams and gels from the hospital.  Does anyone know what to do?