Self-adjusting pneumatically sealed trocar
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United States of America Patent
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Oct 31, 2017
Grant Date -
Aug 4, 2016
app pub date -
Jan 19, 2016
filing date -
Jan 30, 2015
priority date (Note) -
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Abstract
A surgical access device including a housing having a nozzle assembly, a gas supply plenum, a gas return plenum, and a pressure sensing plenum, as well as an elongated tubular body that extends from the housing portion and defines a central lumen communicating with the nozzle assembly and the gas return plenum, a telescopic cannula assembly associated with the tubular body and including a proximal section arranged coaxially within the tubular body and a distal section coaxially supported within the proximal section and mounted for movement relative to the proximal section between retracted and extended positions, and an elastomeric sheath associated with the telescopic cannula assembly and having a distal anchor portion for securing the surgical access device during a laparoscopic surgical procedure.
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