Formal specification of a tool to aid the early dignosis of the Chronic Kidney Disease

The early diagnosis of the Chronic Kidney Disease (CKD) is important to reduce the progression of the disease and prevent its treatment in advanced stages. Information and Communication Technologies (ICT) can assist the CKD diagnosis and the patients´ referral to a nephrologist. In this context, regulatory agencies evaluate the safety and effectiveness of this type of medical system before market to avoid hazard situations to patients. Manufacturers must verify and validate medical systems to ensure their proper operation. Therefore, the formal specification of medical systems using Colored Petri Nets (CPN) can increase systems´ dependability. We present in this paper the formal specification of a tool to aid the early diagnosis of CKD. We specified the CPN models based on interviews with nephrologists and analyses of medical guidelines. We developed the tool named MultCare using the formal models specified. Manufacturers can also use model verification and validation results to show to regulatory agencies that the medical system works properly.