Case study of cost benefits of condition based maintenance used in medical devices

In this paper, a case study is presented to demonstrate how a Condition Based Maintenance (CBM) program can be used to utilize field data and usage data, to minimize unnecessary maintenance, and to reduce service costs. In the case study, the service order data, local dispensing station logs, and install asset data on medicine dispensing products are analyzed. Field data analysis is performed to obtain the Weibull distributions of the system, subsystems and subassemblies. A model is proposed to establish the criteria of the CBM. Optimal parameters such as confidence level and number of failures are obtained by maximizing cost benefits of the CBM comparing with the field service data. Finally, the case study shows that a significant cost saving can be achieved by utilizing the existing field and usage data to establish the CBM program in medicine dispensing product service.