| 摘要 |
Devices and methods for performing minimally invasive surgery. A first cannula (14) includes a distal end portion and a lumen capable of receiving an endoscope (20). The lumen includes a first seal element (22) configured to engage the endoscope during use in the minimally invasive surgery. A second seal element (30) is operatively coupled to the distal end portion and deployable into engagement with tissue (32) adjacent a nonvascular body cavity (24). The second seal element (30) further comprises a fluid delivery passage (30a) operable to deliver a fluid into the tissue (32) and/or into the nonvascular body cavity (24).
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