Buttress attachment for circular stapling device
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United States of America Patent
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-
Aug 16, 2016
Grant Date -
Aug 7, 2014
app pub date -
Feb 4, 2013
filing date -
Feb 4, 2013
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A circular stapling device includes a circular anvil assembly and a circular cartridge assembly. The anvil assembly includes a cap and head. The cap is movable relative to the head. The head supports a crush ring member that is movable into engagement with the cap to move the cap to an unapproximated position relative to the head to release a portion of an anvil buttress member supported between the anvil cap and the anvil head. The cartridge assembly includes a housing, a pusher member, a retaining ring member, and a fastener cartridge. The retaining ring member releasably secures a portion of a cartridge buttress member to one or both of the housing and the fastener cartridge. The retaining ring member releases the cartridge buttress member when the retaining ring member moves from a radially constricted condition to a radially expanded condition in response to a movement of the pusher member.
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