Technical systems evolution follow trends, some laws describe the different steps of evolution of those systems. These laws are known as "laws of technical systems evolution" from the TRIZ theory. The aim of this paper is to propose an approach facilitating the use of the evolution laws, as part of a framework for innovation. To achieve our goal we start by an analysis of each definition of the three first evolution laws. It’s analysis we’ll permit to extract with precision part of the definition we’ll use to construct a model helping the use of the laws. The model we propose is composed of a short quiz that users must answer. The purpose of these questions is to guide the user as far as possible in the identification of functional elements of the system and possible developments of innovative products, as recommended by the three first laws. After that, we’ll conduct an experimentation to taste this model on two kinds of participants, some of them are software developers working in differents companies, they do not know the TRIZ theory. The other participants are students in training who learned some tools to innovate, they are not completely novices on TRIZ.To conclude, we’ll present the relevance of our approach to use systematically the first 3 evolution laws of TRIZ.< Leer menos