MOTOR DRIVEN ROTARY INPUT CIRCULAR STAPLER WITH LOCKABLE FLEXIBLE SHAFT

摘要

A circular stapler apparatus and method for stapling tissue include a shaft assembly and an anvil. The anvil is configured to proximally retract toward the shaft assembly, which at least severs or staples tissue based on a single rotary input. The shaft assembly includes a plurality of joint segments, and each joint segment includes a resilient member. The plurality of joint segments are configured to pivot relative to one another in a first, uncompressed position and are configured to lock against one another to prevent pivoting in a second, compressed position. A first plurality of joint segments defines a proximal portion that is attached to a first cable or shaft. A second plurality of joint segments defines a distal portion that is selectively lockable independent of the proximal portion and that is attached to a second cable or shaft.

主权项

1. A circular stapler apparatus for stapling tissue, the apparatus comprising:
(a) a staple head assembly operable to drive staples into tissue; (b) a shaft assembly, the shaft assembly comprising:
(i) a plurality of joint segments, each joint member comprising a resilient member, wherein the plurality of joint segments are configured to pivot relative to one another in a first, uncompressed position and are configured to lock against one another to prevent pivoting in a second, compressed position; and (c) an anvil configured to proximally retract toward the shaft assembly, wherein the shaft assembly and anvil together are configured to at least sever or staple tissue based on a single rotary input.