| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a surgical stapling instrument for applying surgical staples to tissue. <P>SOLUTION: The circular surgical stapling instrument includes various forms of anvil locking systems 400 designed to selectively prevent the anvil from moving axially relative to the stapling head. One embodiment employs an elongated gear rack 402 that is selectively engageable with locking gears to prevent axial motion of the elongated gear rack and an adjustment shaft used to axially position the anvil 100. Other embodiments employ a gear assembly that cooperates with the elongated gear rack. A locking member is movably supported by a handle assembly 40 that houses the gear assembly and elongated gear rack. The locking member is configured for selective meshing engagement with the gear assembly to ultimately prevent axial movement of the gear rack and adjustment shaft. <P>COPYRIGHT: (C)2011,JPO&INPIT |
