Fig. 3
From: Design of percutaneous transluminal coronary angioplasty balloon catheters
Results of the investigation on the balloon design and longitudinal elongation measurement. a Microscopic images show the cross-section through the center of the balloon. The balloon folds around the IS, and the wall thickness (WT) of the balloon and IS are visible. b Median values and IQR of the axial balloon elongation at the respective RBP in a water bath at 37 °C. c Median values and IQR of the ratio between the longitudinal elongation and the RBP