Deployable structures offer unique advantages in medical applications by enabling devices that can transform their geometry to meet functional demands during minimally invasive procedures. This presentation provides an overview of key principles, design considerations, and recent advancements in deployable medical devices developed at Oxford. Emphasis is placed on how geometric adaptability — achieved through deformable structures — can enhance clinical performance, facilitate delivery through constrained anatomical pathways, and improve patient outcomes. Examples from current research and translational technologies illustrate the potential of deployable structures to address critical challenges in modern healthcare.