Abstract: A flexible retention catheter includes a soft, pliable cone-shaped tip with a reduced urethral contact surface defined by spiral grooves or hair-like projections. A magneto-insert embedded within the tip is used in cooperation with an electromagnet externally of the catheter to propel the catheter along the urethra by repulsive or attractive lines of magnetic force. In one embodiment, the tip of the catheter is partially divided along one transverse line to form a hinged tip segment and in another embodiment, the tip portion is divided longitudinally along a line intersecting with a transverse dividing line forming two hinged tip segments. The segments are releasably joined by releasable fasteners. The hinged tip segments are swung about the hinge connection against the inflated surface of the balloon by tension strips that extend along the balloon and move in response to a distention thereof to expose the drainage lumen within the tip.

Abstract: A closed system is provided for irrigation of the human bladder following surgery, or for other reasons. The system includes a unitary flow control device having a syringe and arranged for making sealed connections to a catheter and to supply and drain lines. Separate flow paths can be established by manipulation of the flow device between the syringe and the catheter, the supply line and the drain line so that the irrigation can be carried out without opening the system at any point and the risk of infection is eliminated.