An urethral sealing device comprising first and second body portions selectively attacheable to one another to form a unitary element including a first 
catheter lumen extending therethrough between proximal and distal ends of the unitary element wherein, when the sealing device is in an operative position, the distal end is positioned within a 
urinary bladder and a sealing element extending radially outward from the unitary element so that, when the sealing device is in the operative position, the sealing element engages one of a wall of the 
urethra and a wall of the 
urinary bladder around an orifice at which the 
urethra opens into the 
urinary bladder to seal the 
urethra. A 
system for treating a urinary tract, comprising a bladder liner element which, when in an operative position, is inserted in the bladder, an outflow 
catheter extending from a proximal end of the bladder liner wherein, when in the operative position, the outflow 
catheter extends into the urethra, a first inflow catheter extending from a distal end of the bladder liner wherein, when in the operative position, the first inflow catheter extends into a first 
ureter and a first 
ureter sealing element which, when the first inflow catheter is in the operative position, prevents 
urine from flowing into the bladder so that 
urine flows from the first inflow catheter into the bladder liner and through the outflow catheter to pass out of the body.