Novel measurement tool and model for aberrant urinary stream in 3D printed urethras derived from human tissue

An estimated 10% of male adults have split or dribbled stream leading to poor hygiene, embarrassment, and inconvenience. There is no current metric that measures male stream deviation. To develop a novel method to measure spray in normal and abnormal anatomical conformations. We developed a novel platform to reliably describe spray. We used cadaveric tissues and 3D Printed models to study the impact of meatal shape on the urinary stream. Cadaveric penile tissue and 3D printed models were affixed to a fluid pump and used to simulate micturition. Dye captured on fabric allowed for spray detection. Spray pattern area, deviation from normal location, and flowrates were recorded. Computational fluid dynamic models were created to study fluid vorticity. Obstructions at the penile tip worsened spray dynamics and reduced flow. Ventral meatotomy improved flowrate (p