| 摘要 |
Apparatus and methods for performing surgery within a hollow-body organ are provided. A catheter is provided having a longitudinal axis and an end region carrying an end effector. The end region is movable to a series of positions along the longitudinal axis with a selectable orientation relative to the longitudinal axis. The catheter includes elements for stabilizing the end region of the apparatus within a hollow-body organ, and for counteracting reaction forces developed during actuation of the end effector. The end effector provides for tissue cutting and aspiration of severed tissue from a treatment site.
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