Fig. 1From: A review: flexible, stretchable multifunctional sensors and actuators for heart arrhythmia therapy(Reproduced with permission from Ref. [16], Copyright © 2011, Rights Managed by Nature Publishing Group)Multifunctional inflatable balloon catheters. a Image of inflatable catheter (130% inflation) with contraction and (upper right) inflated state. b An enlarged image of an inflated balloon catheter (green dotted area in a)Back to article page