Fig. 3

The mechanical simulation results. a The XEN gel stent; b the outer diameter varies along the shaft: 250 μm over 1 mm, reducing to 150 μm over 3 mm, bridged by a 2 mm transitional segment. The inner diameter fluctuates non-uniformly between 60 and 70 μm. c The outer diameter varies along the shaft: 250 μm over 1 mm, reducing to 150 μm over 3 mm, bridged by a 2 mm transitional segment, equal inner diameter 65 μm. d The outer diameter varies along the shaft: 250 μm over 1 mm, reducing to 200 μm over 3 mm, bridged by a 2 mm transitional segment. The inner diameter fluctuates non-uniformly between 60 and 70 μm. e The outer diameter varies along the shaft: 250 μm over 1 mm, reducing to 200 μm over 3 mm, bridged by a 2 mm transitional segment, equal inner diameter 65 μm