The reengineering of the medication-use process is an important challenge in order to reduce medication errors and costs for the pharmacy (increase of the efficience ; reduce the amount of work time spent by nurses in the medication administration process. . .). The use of the nominative dispensing, automatic systems (robots, pneumatic circuit, cart dispensing. . .),control system of administration to the patient are solutions which can avoid the human errors. We propose in this study to use the concept used in industrial systems in order to improve the safety and the traceability on the medication-use process. We use the paradigm of Product Driven System which proposes to place the product in the centre of the system using identification technology as RFID. We made an analogy between the medication-use process and an assembly system : the product is considered as a preparation of the prescription for a patient and an operation of assembly is considered as an addition of medication. The goal of this thesis is to propose a reengineering methodology based on MDA (Model Driven Architecture) and ASDI (Analysis-Specification-Design-Implementation) in order to implement a system based on product driven synchronizing the physical and informational flow. In particular,this methodology is applied to the medicament-use process. Finally, we present an example of application of this modelling to the hospital of Clermont-Ferrand through simulation software which allows testing different scenarios to help the pharmacists and managers of the hospital to make up their decisions.