Fig 1.
a: Silicone model of cadaveric urethra in-situ b: Scanned urethral lumen for computational modeling and 3D printing c: Experimental set up for flow experiments; α: Modified 18 Fr silicone tube affixed to cadaveric penis, €: MedAmicus 4114UF Lumax Cystometry System, Ω: Uniclife DEP-4000 Controllable DC Water Pump, £: Urine spray detector apparatus d: Example urinary spray pattern result of cadaveric model.
Fig 2.
Conformational changes performed to reduce lumen size.
A: Extrinsic compression applied to penile tissue using ring clamp with calibration over catheter, B: Creation of ventral narrowing at meatal tip with calibrating catheter in place, C: Creation of dorsal narrowing at meatal tip with calibrating catheter in place.
Table 1.
Flow-rates and spray areas recorded by novel detection system in cadaveric and 3D printed models.
Fig 3.
a) Graphical Representation of Voiding Strength and Spray Stratified by Tip Alternations for Specimen 2. b) Relative Voiding Characteristics Specimen 2.
Table 2.
Impact of meatoplasty on flowrates and spray area in a cadaveric model.
Fig 4.
a: Computational modeling of vorticity with increasing levels of distal urethral obstruction; b: Normalized vorticity over voiding time stratified by level of obstruction; 83%, 90% and 96% reduction in lumen area for mild, moderate, and severe, respectively.