Fig. 9From: Design of percutaneous transluminal coronary angioplasty balloon cathetersSchematic of deflation time measurement on PTCA balloon catheters. The distally opened catheter shaft is placed in 300 ml contrast media–saline solution at 23 °C and fixed in position. A syringe attached to the hypotube generates a vacuum. The water reduction is measured as a weight reduction over timeBack to article page