Surgical access port with flexible sealing cannula
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United States of America Patent
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Dec 13, 2011
Grant Date -
May 6, 2010
app pub date -
Oct 30, 2008
filing date -
Oct 30, 2008
priority date (Note) -
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status (Latency Note)
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Abstract
A surgical access device for surgical instruments comprises a housing with an instrument port and zero closure valve. A cannula is disposed distally relative the housing. The cannula comprises a distal end, a proximal end, and a flexible tube having a longitudinal axis between the distal and proximal ends. An instrument seal is positioned adjacent the distal end of the cannula. The instrument seal is dimensioned to have an interference fit with a surgical instrument inserted into the cannula. Longitudinal movements of a surgical instrument are accommodated by buckling of the flexible tube while the relative longitudinal position of the instrument seal and instrument are substantially unchanged.
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