A device, system, and method that: acquires information that a sterilized endoscope, having reusable and non-reusable parts, is used; outputs an instruction for collecting the used endoscope from a medical institution; acquires information on the number of endoscopes scheduled for inspection, a predetermined number of endoscopes not scheduled for inspection, and the number of endoscopes in an endoscope inventory; outputs an instruction for delivering a non-used replaceable endoscope to the institution in response to the collection instruction; and outputs an instruction for delivering a non-used endoscope to the institution when equation (2) is not satisfied, equation (2) being: endoscope inventory quantity>number of endoscopes scheduled for inspection+predetermined number.