A Pilot ExVivo Evaluation of a Telerobotic System for Transurethral Intervention and Surveillance
Identifieur interne :
001380 ( Pmc/Corpus );
précédent :
001379;
suivant :
001381
A Pilot ExVivo Evaluation of a Telerobotic System for Transurethral Intervention and Surveillance
Auteurs : Ryan B. Pickens ;
Andrea Bajo ;
Nabil Simaan ;
Duke HerrellSource :
RBID : PMC:4313395
Abstract
AbstractIntroduction: Transurethral resection of bladder tumor (TURBT) and pathological staging are both standard surgical therapies for nonmuscle-invasive bladder cancer and integral parts of the diagnostic evaluation and progression monitoring of all bladder tumors. We developed and tested a dexterous robot that can fit through a standard resectoscope for evaluation for possible en bloc resection of bladder tumors, especially tumors along the dome and anterior wall of the bladder.
Materials and Methods: Our dexterous robot uses a continuum (snake-like) mechanical architecture with three working channels through which a fiberscope, biopsy graspers, and a holmium laser were placed. The continuum robot has two segments. Using indigo carmine, injections were performed through the detrusor muscle into the mucosa of the exvivo bovine bladders at a total of 11 positions throughout all quadrants of the bladder. The snake robot was used in conjunction with the holmium laser to ablate nine of the lesions; two additional lesions were resected en bloc using the grasper and the laser down through the muscle layer.
Results: Both experiments showed that the robotic system was able to directly visualize all 11 targets. In both the bladders, we were able to resect en bloc two tumors using the grasper and 200 μm holmium laser fiber down to the muscle layer indicating a good resection. All of the other targets were completely ablated using the holmium laser.
Conclusion: The dexterous robot allowed for visualization as well as provided adequate ablation and en bloc resection of bladder lesions throughout the entire bladder.
Url: DOI: 10.1089/end.2014.0366
PubMed: 25091196
PubMed Central: 4313395
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