New bipolar resection device for transurethral resection of the prostate: first ex-vivo and in-vivo evaluation.

Background And Purpose: Bipolar resection systems for transurethral resection of the prostate (TURP) offer some advantages over conventional monopolar devices. As both the active and the return electrode are placed on the tip of the resectoscope, current flow is locally limited, and negative effects caused by the current flow through the patient's body in the monopolar array can theoretically be reduced. Furthermore, bipolar resectoscopes use 0.