In the domain of designing innovative products in the medical field, investigations are oriented towards communication between actors and needs comprehension. In the DESTIN Project, User Center Design methodology with concrete experiments is applied. Researchers propose emulations in the operating room for the co-evaluation of innovative products and new adapted surgical procedures. In this paper, they intend to evaluate the usage of the product in a virtual environment using 3D haptic feedback system. They model the operating room and the surgical operative conditions and finally discuss the possible use of the virtual environment system for product and surgical procedure validations.