Patent ID: 9216020
Filing Date: 2015-12-22
Classification: A61B

Abstract:
1. An endoscopic surgical cutting stapler with a chain articulation, comprising: an end effector, a chain articulation, an extension tube, a stapler body, and an operating mechanism, wherein the operating mechanism is located on the stapler body, the operating mechanism controls an action of the end effector through an inner cavity of the extension tube; the end effector, the chain articulation, the extension tube, and the stapler body are connected in sequence; the end effector is formed by a support, a slide bar, a staple cartridge, and a staple anvil; the slide bar, the staple cartridge, and the staple anvil are mounted on the support; the staple cartridge is formed by a staple cartridge housing, staple pushing blocks, a staple pushing sled, and staples; the staple cartridge housing is provided with staple slots, staple pushing holes, a sled slot, and a blade pushing slot; the staples are mounted in the staple slots; the staple pushing blocks are mounted in the staple pushing holes; the staple pushing sled is mounted in the sled slot; the staple slots and the staple pushing holes of the staple cartridge housing are aligned at two sides of the blade pushing slot; an end surface of the staple anvil is provided with staple forming slots corresponding to positions of the staples in the staple cartridge, and is also provided with a cutting slot corresponding to a position of the blade pushing slot in the staple cartridge housing; the chain articulation is formed by chain plates and pivot pins; a working channel is provided from a proximal end to a distal end on the chain articulation; the slide bar penetrates through the working channel of the chain articulation and performs an action of the operating mechanism; the chain plates are pivoted with each other through the pivot pins and arranged in two intersecting rows; a proximal end of a most proximal chain plate of the chain articulation is driven by the operating mechanism, and a distal end thereof is provided with teeth; teeth are provided on both ends of other chain plates of the chain articulation; teeth of adjacent chain plates in the same row are engaged; the proximal end of the most proximal chain plate of the chain articulation is pivoted to the extension tube; a distal end of a most distal chain plate of the chain articulation is pivoted to the end effector; a distal end of the extension tube is provided with teeth; teeth at a proximal end of a sub-most proximal chain plate of the chain articulation are engaged with the teeth at the distal end of the extension tube.