Valve assembly including diameter reduction structure for trocar
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United States of America Patent
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Oct 9, 2012
Grant Date -
Dec 30, 2010
app pub date -
Jun 28, 2010
filing date -
Oct 13, 2000
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A surgical access device includes a surgical sleeve defining a central longitudinal axis and having a longitudinal passageway to permit passage of a surgical object, and a diameter reduction assembly operably couplable to the surgical sleeve. The diameter reduction assembly includes a structure foundation and at least three stand-off elements mounted to the structure foundation. Each stand-off element is positioned to engage the surgical object and is independently movable relative to the remaining stand-off elements. The at least three stand-off elements are normally biased to a first position which urges the surgical object into general alignment with the central longitudinal axis, and are adapted for distal pivotal movement from the first position to a second position to facilitate passage of the surgical object, and for proximal pivotal movement from the first position to a third position to facilitate withdrawal of the surgical object.
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