  Retained surgical bodies (RSB) are any foreign bodies left inside the patient
after a medical procedure. RSB is often caused by human mistakes or
miscommunication between medical staff during the procedure. Infection, medical
complications, and even death are possible consequences of RSB, and it is a
significant risk for patients, hospitals, and surgical staff. In this paper. we
describe the engineering process we have done to explore the design space,
define a feasible solution, and simulate, verify, and validate a
state-of-the-art Cyber-Physical System that can significantly decrease the
incidence of RSB and thus increase patients' survivability rate. This system
might save patients' suffering and lives and reduce medical staff negligence
lawsuits while improving the hospital's reputation. The paper illustrates each
step of the process with examples and describes the chosen solution in detail.
