The kit includes an adapter that improves the fixation of a ureteral catheter to the adapter and a clip for stabilizing the combining of ureteral catheters with a Foley catheter. A collar at each ureteral catheter-receiving orifice of the adapter increases the length over which a ureteral catheter is connected to the adapter thereby reducing the risk of the ureteral catheter pulling out during a surgical procedure. A cap is tethered to the adapter to close off and seal an orifice should only one ureteral catheter be used.
