What is the LUCAS device and how does it help patients? The LUCAS Device delivers CPR to patients in cardiac arrests. We carry this piece of kit on our helicopter and each of our Critical Care Response vehicles. Using this piece of kit means our crew are freed up to deliver other treatments without interruptions - and unlike a human, the LUCAS never gets tired! You may have seen the LUCAS being used in episode 1 of Emergency Helicopter Medics to deliver chest compressions to 48 year old Paul. Doctor Chloe and paramedic Jo, who treated Paul, explain more about the LUCAS in this video: Get more awesome behind the scenes of Emergency Helicopter Medics content here.