Electric surgical instrument

Abstract

The invention relates to an electric surgical instrument. The electric surgical instrument comprises a severing and stapling part and a handgrip, wherein the severing and stapling part comprises an anvil assembly and an anvil storage assembly; the handgrip comprises a power supply assembly, a drive assembly, a switching assembly, a first power output assembly, a second power output assembly, a control circuit and a housing part; the drive assembly comprises a drive gear and a first motor; the switching assembly comprises a shaft, an output switching part and a plurality of gear assemblies; theoutput switching part comprises a second motor, a transmission rod and an engaging element; and the output switching assembly can enable the switching assembly to be located in a first output mode ora second output mode. The electric surgical instrument provided by the invention achieves swinging, closing and firing of a cartridge assembly through the first motor. The complexity of the structureof the electric surgical instrument is reduced and the cost is reduced. Meanwhile, setting of an initial drive state is achieved through the second motor, and a protector structure for preventing firing by mistake is formed.

Description

technical field [0001] The invention relates to a medical surgical instrument, in particular to an electric surgical instrument. Background technique [0002] In surgery, staplers are usually used to resect tissues and seal wounds. Staplers include linear cutting staplers, tubular staplers, endoscopic linear cutting staplers, etc. These staplers can be used to resect diseased tissues of the lung, intestine, and stomach while sealing the wound. During the operation, the end effector of the stapler clamps and squeezes the tissue, then cuts the tissue with a cutting knife, and quickly sutures the wound with staples. The use of the stapler shortens the operation time, improves the success rate of the operation, and recovers quickly after the operation. [0003] The currently used stapler mainly has two kinds of manual operation and electric operation. During the operation, the front end of the stapler must be used to hold the tissue to be cut and prepare for firing. For man...

AI Technical Summary

Problems solved by technology

During the entire firing process, the hand provides support and pressing forces, and it is easy to cause the shake of the stapler caused by the shaking of the hand

For the anorectal stapler and tubular stapler, although the firing process is completed by pressing the handle once, there is still the problem of uneven force applied during the entire firing process when the handle is pressed with the grip force of the human hand

Insufficient stable and uneven manual firing force will affect the final staple forming effect, resulting in defects in the staple forming, and the cutting wound surface of the cutting knife is not smooth

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