The illustration shows a urinary catheter, that was placed through the urethra and not suprapubically.
Otherwise visible are testicles, penis, prostate, pubic bone, bladder, rectum.
Urinary catheters are for the artificial drainage of the bladder for diagnostic purposes, in those after surgery and in other cases of urinary retention.
The suprapubic catheter is the best method for aquiring truly sterile urine.
