| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a new surgical instrument introduction system that allows a large access area through a small incision. Ž<P>SOLUTION: The present disclosure relates to a sheath system for enabling access through an opening in the body of a patient. The sheath system includes a dilation assembly having a radially expandable tubular sheath defining a lumen having a first cross-sectional area when in a non-expanded condition, and a handle assembly operatively coupled to a proximal end of the tubular sheath. The handle assembly defines an aperture formed therein, and a first thread defined on the handle in the aperture thereof. The sheath system further includes an expansion assembly including a tubular member defining a lumen having a second cross-sectional area which is larger than the first cross-sectional area of the tubular sheath of the dilation assembly and having an outer surface defining a second thread, the second thread being arranged for engaging the first thread. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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