| http://www.w3.org/ns/prov#value | - When anvil assembly 10 is attached to a surgical stapling device and the device is fired such as disclosed in the manner described in the '722 application, backup plate 20 and cutting ring 22 are pushed into inner annular recess 36 of housing 18 about post 16 by a knife blade (not shown) to move fingers 38 away from and out of engagement with protrusions 52 b of center rod 52 (FIG. 10) and permit
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