Hoshi Iryo-Sanki Co., Ltd. manufactures and sells pharmaceutical medical oxygen and nitrous oxides in Japan. It operates through the five segments: Medical Gas Related Business; Home Medical Care Related Business; Medical Gas Equipment Construction Related Business; Nursing Care and Welfare Related Business; and Nursing Care Facility-Related Business. The Medical Gas Related Business segment sells medical oxygen gas, anesthetic gas, and other medical gases. The Home Medical Care Related Business segment rents and sells oxygen concentrators for home oxygen therapy, and continuous positive airway and sales. The Medical Gas Equipment Construction Related Business segment designs and constructs medical gas piping works, as well as maintains and inspects medical gas piping equipment. The Nursing Care and Welfare Related Business segment offers rental and sale of care and welfare-related products and equipment, home renovation, visiting nursing, and home care support services. The Nursing Care Facility-Related Business segment operates the paid nursing homes and day care facilities, and other related operations. The company was founded in 1960 and is headquartered in Tokyo, Japan.