ROTORESECT - NEW TECHNIQUE FOR RESECTION OF THE PROSTATE - EXPERIMENTAL PHASE

We developed a new resection device-the Rotoresect-with the aim of red ucing morbidity during transurethral resection of the prostate (TURF), During rotoresection, a rotating ablator electrode enables simultaneo us tissue coagulation by high-frequency current and mechanical tissue ablation, The tissue ablation rate and the extent of bleeding were qua ntified ex vivo using a blood-perfused porcine kidney (N = 30) and the n compared with loop resection and electrovaporization (grooved roller /Rollerball), Additionally, transurethral rotoresection of the prostat e and open partial resection of the liver were carried out in five dog s, With the blood-perfused porcine kidney, we demonstrated that the ti ssue ablation rate increases with increasing of the coagulation curren t and rotation speed of the ablator electrode, The Rotoresect achieved a tissue ablation rate comparable to that of the resection loop (5.5- 6.0 g/min), which was more than twice the rate achieved by electrovapo rization (1.7-2.0 g/min), The extent of bleeding during standard loop resection was many times higher (16.5-18.0 g/min) than that induced by rotoresection and electrovaporization (<2.3 g/min), In our in vivo ca nine trials, we performed transurethral prostate resection and open se gmental liver resection with minimal bleeding, The Rotoresect is a pro mising instrument for ablation of parenchymal organs during transureth ral, laparoscopic, and open surgical procedures.