Improved locking mechanism on surgical instrument

Abstract

The invention provides an improved locking mechanism on a surgical instrument, and specifically relates to an improved locking mechanism on a knuckle joint on an anastomat. A knuckle structure betweenan anastomat end execution device and a slender shaft is improved. A locking plate with an arc groove and a locking rod with a slope are cooperated, through upper and lower inner surfaces of the arcgroove and the upper and lower inner surfaces of the locking rod, the locking mechanism clamps or contacts in a frictional manner, so that the locking mechanism has large locking moment, and a technical problem that a soft tissue in a conventional locking mechanism is easily damaged by teeth on a knuckle would not occur.

Description

technical field

[0001] The invention relates to an improved locking mechanism on a surgical instrument, in particular to an improved locking mechanism on a joint of a stapler. Background technique

[0002] It is known that in the prior art, the stapler is used as a medical device to replace the traditional manual suturing. It is easy to use, tight and suitable for tightness. In particular, it has the advantages of fast suturing, easy operation, and few side effects and surgical complications. It also enables tumor resection that was unresectable in the past, and is favored and respected by clinical surgeons at home and abroad. A surgical stapler, such as an endoscopic cutting stapler, may include an end effector that is movable or articulated relative to the elongate shaft assembly. End effectors are typically configured to hold tissue to be resected between clamping devices, wherein the clamping devices typically include structures configured to receive a staple cartridge ...

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