Bili bottom diapers

A disposable phototherapy diaper intended primarily to maximize the surface area of a newborn infant exposed to phototherapy light to counteract a condition known as hyperbilirubinenemia comprising:

• a sheet of flexible material permeable to an amount of biologically effective phototherapy light sufficient to reduce the concentration of bilirubin in the skin of the infant, which sheet of flexible material, when oriented in two planes prior to use, extends longitudinally between first and second ends, said first and second ends being relatively broad, extending, laterally, between left and right tabs, respectively, and having a laterally narrowed region intermediate said ends such that, when worn by the infant, said first end is contiguously receivable on the front of the infant, said second end is contiguously received on the back of the infant, and said narrowed region overlies the crotch of the infant, said narrow region being defined between laterally opposed edges which are tapered convergingly from said left and right tabs of said first end to said narrowed region then divergingly from said narrowed region to said left and right tabs of said second end so as to closely conform to the shape of the infant;
• fastening means from joining said first and second tabs of said first end, respectively, to said first and second tabs of said second end when said diaper is worn by the infant;
• and
• a pad of absorbent material having a size strictly coextensive with the crotch of the infant to receive and hold liquid, including urine, excretions , said flexible material in the narrowed region simultaneously serving to receive and hold bowel excretions from the infant.