Figure 1. Instructions for assembling catheter and urethra .
a) shows the materials needed to assemble the catheter and penile shaft at home. The tubes have two different diameters.
b) The catheter can be assembled at home with a tube, a balloon and adhesive tape. To test if the catheter is leak-proof, it is blocked with a disposable syringe filled with water.
c) For the simulated penis shaft, the tube (larger diameter than catheter) is wrapped with a tea towel and this is fixed with adhesive tape.