Percutaneous puncture of renal calyxes guided by a novel device coupled with ultrasound.

Purpose: To evaluate the efficiency of a novel device coupled with ultrassound for renal percutaneous puncture.

Materials And Methods: After establishing hydronephrosis, ten pigs had three calyxes of each kidney punctured by the same urology resident, with and without the new device ("Punctiometer"). Time for procedure completion, number of attempts to reach the calyx, puncture precision and puncture complications were recorded in both groups and compared.