| 摘要 |
A double-lumen balloon cannula and method for performing blunt dissection of an elongated, non-spherical cavity under visual control includes a tubular lumen to slidably support an endoscope therewithin, and a second lumen having an inverted, nonelastomeric, transparent balloon attached at one end and contained therewithin that is capable of being everted in response to fluid under pressure applied thereto. The endoscope is selectively advanced within the everting balloon to visualize tissue in the elongated cavity through the balloon.
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