ENDOSCOPIC TRANSLUMENAL SURGICAL SYSTEMS

摘要

Methods and devices are provided for performing translumenal (e.g., transora l and transanal) procedures. In general, the methods and devices utilize a trocar assembly or trocar end cap that can facilitate insertion of an endoscope through tissue. In one embodiment, a flexible trocar assembly is provided and includes an obturator having an inn er lumen formed therethrough for receiving an endoscope therein, and a distal end that is adapted to facilitate insertion of the endoscope through tissue and that is adapted to facilitate viewing therethrough. The trocar assembly can also include a trocar sleeve that is disposable over the obturator. In use, once the trocar assembly is inserted through tissue, the trocar sleeve can function as a placeholder, allowing the endoscope and obturator to be removed. The endosco pe can then be removed from within the obturator and reinserted through the trocar sleeve f or use in performing various other procedures. In other embodiments, rather than using a trocar that houses the endoscope, an end cap can be removably disposed over a distal end of the endoscope. The present invention also provides methods and devices for shielding an endosco pe during insertion through a body lumen, and in particular for preventing contact between the endoscope (or trocar sleeve) and the body lumen, thus preventing bacteria from being carried into a body cavity.