This paper shows how an experimental clinical ethics device, proposed by researchers in ethics to intensive care units professionals, has created a collective learning context. The outcome of such a collective learning has been the progressive working-out, from the clinical and care practice, of a given clinical ethics grid into a more intensive care units context adapted grid. Some comments are made about the importance to subjectivize a clinical ethics approach, about the collective learning device installed throughout the joint health care professionals--researchers in ethics seminar and about the need to institutionalize ethics.