Patent ID: 9474877
Filing Date: 2016-10-25
CPC Classification: A61M,F16K

Claim Text:
1. A transurethral catheter kit comprising a catheter ( 2 ) and a syringe assembly ( 3 ), the catheter having a distal end ( 4 ) and a proximal end ( 5 ), an inflatable balloon having a balloon inflation pressure ( 6 ) disposed on the distal end, an inflation lumen having a proximal portion adapted to establish fluid communication with the syringe assembly ( 3 ) and a distal end in fluid communication with the balloon, and a drainage lumen adapted to drain fluid from the bladder during use, the syringe assembly having a syringe and a nozzle ( 11 ), the nozzle comprising a pressure relief valve ( 9 ) adapted to exhaust fluid from the syringe assembly during delivery of the fluid from the syringe into the balloon when the pressure in the fluid reaches a threshold pressure, characterized in that the nozzle additionally comprises a narrow bore ( 12 ) disposed in the nozzle proximally of the pressure relief valve, the narrow bore having a resistance to flow R f of 1.65E+11 to 1.85E+11 kg/m 4 s, thereby providing an inflation time for the balloon in the bladder of 12-27 seconds at an applied force of 3.5 kgF to 11.5 kgF, whereby the balloon inflation pressure is maintained within a range of 65 kPa to 135 kPa, and the threshold pressure of the pressure release valve is greater than a maximum balloon inflation pressure.