23-05-2013 дата публикации
Номер: US20130126586A1
An endoscopic surgical cutting stapler with a chain articulation is provided, in which a joint is implemented by a chain articulation, teeth are provided at two ends of a chain plate of the chain articulation, and teeth of adjacent chain plates in the same row are engaged. Through mesh transmission of engaged teeth of the adjacent chain plates in the same row, an angle of a most proximal chain plate of the chain articulation is gradually multiplied at several stages and transmitted to an end effector. The end effector can rotate for 90° with small drive motion of the operating mechanism, thereby achieving precise placement of the chain articulation after rotation. The end effector can be precisely aligned with a part to be cut and stapled, and a radius of curvature of the chain articulation can be significantly increased. 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 , whereinthe 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 ...
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