ArticleDer Urologe. Ausg. A2014
[Natural orifice transluminal endoscopic surgery in urology: feasability of a transrectal, flexible retroperitoneoscopy in a porcine model].
Article in Der Urologe. Ausg. A, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
backgroundNatural orifice transluminal endoscopic surgery (NOTES) in urology is becoming more and more interesting due to technical innovations. One of those innovations is the HybridKnife®, a multifunctional sonde that combines high-frequency electrosurgery and water jet surgery. The aim of this study was to establish a transrectal, flexible endoscopic retroperitoneoscopy in a porcine model by means of the HybridKnife® for further development of a transrectal retroperitoneal NOTES lymphadenectomy (NOTES-RLA). MATERIAL AND
methodsFive female pigs (25-30 kg body mass) were anesthetized and placed in a supine position. The rectal mucosa was opened 3-5 cm cranially of the linea dentata. After submucosal tunneling, the retrorectal space was opened. We performed a flexible endoscopic retroperitoneoscopy by means of a double-channel gastroscope 13.806 PKS (Karl Storz-Endoskope, Tuttlingen, Germany) and the HybridKnife® I-type (ERBE Elektromedizin, Tübingen, Germany).
resultsTransrectal access was safe and feasible without any difficulties. Using the HybridKnife® water jet technology, the retroperitoneal space could be distended which enabled safe access to the iliacal vessels, the bifurcation of the aorta/vena cava, and the pre- and paraaortal/-caval space up to the renal vessels. The water jet did not lacerate or injure blood vessels, nerves, or lymph vessels in any of the surgical procedures.
conclusionsBy means of the HybridKnife®, transrectal access into the retrorectal space is safe and easily feasible. The water jet technology combined with electrosurgery prevented injuries of blood vessels, nerves, and lymph vessels and enabled transrectal flexible endoscopic retroperitoneoscopy as a precondition for further establishment of a transrectal NOTES-RLA.
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