CIRCULAR STAPLER AND STAPLE HEAD ASSEMBLY THEREOF
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United States of America Patent
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Issued Date -
Nov 26, 2015
app pub date -
Dec 27, 2013
filing date -
Dec 29, 2012
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Abstract
A circular stapler and a staple head assembly thereof are disclosed. The staple head assembly comprises a staple barrel assembly and an anvil assembly. The anvil assembly includes an anvil ring and an anvil shaft which are fixedly connected to each other, where the anvil shaft is capable of sliding along the longitudinal direction in an expansion-stopping tube. The staple barrel assembly includes a staple barrel, a staple pusher piece arranged within the staple barrel and a staple cartridge fixed at a distal end of the staple barrel.
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