18 January 2017
Vol 9, Issue 373

About The Cover

Cover image expansion

ONLINE COVER Artificial Muscles Assist the Heart. This computed tomography image shows a ventricular assist device surrounding an isolated pig heart (Roche et al.). The device, composed of layered pneumatic artificial muscle actuators in a soft polymer material, increased ventricular ejection volume in vitro and cardiac output in vivo during cardiac arrest in pigs. The artificial muscles within the sleeve-like soft robotic device could twist and compress, providing ventricle-specific assistance that mimics the motion of the natural heart. [CREDIT: ROCHE ET AL./SCIENCE TRANSLATIONAL MEDICINE]