Medical devices are common technologies that the majority of healthcare professionals must be familiar with, and yet device associated incidents account for a significant proportion of medical errors. In this project the Dept of Biosurgery and Surgical Technologies at Imperial College London designed, built and tested a scenario-based simulation in the 3D virtual world of Second Life. Their research illustrates the use of Second Life as a novel platform for immersive clinical training. Participants were able to learn and practice in a complex but safe environment where they could make mistakes without risk to any real patients. This walkthough illustrates the pilot project which was funded by the Training Hub for Operative Technologies in Healthcare (THOTH). For further information see https://www.tinyurl.com/mmdl-icl