Cutting knife guard plate assembly, anastomat and steering control method

Abstract

The invention discloses a cutting knife guard plate assembly, an anastomat and a steering control method. The cutting knife guard plate assembly comprises two cutting knife guard plates which are positioned on two sides of a central axis and have two opposite arc-shaped structures with corresponding recessed inner surfaces to form space allowing a cutter handle of the cutting knife assembly to move along the central axis and / or deflect relative to the central axis; and the two cutting knife guard plates respectively deflect relative to the central axis when one cutting knife guard plate moves toward the near end of the anastomat and the other cutting knife guard plate moves toward the far end of the anastomat, the knife handle is bent, and the part, protruding toward one side due to bending, of the knife handle is attached to the inner surface of the cutting knife protection plate on the corresponding side. Compared with an existing anastomat, the anastomat provided by the invention has the advantages that the rotating angle is larger, and the anastomat is more stable during deflection.

Description

technical field [0001] The invention relates to a stapler, in particular to a cutter guard plate assembly, a stapler and a steering control method. Background technique [0002] A stapler is a device used in medicine to replace manual suturing. The stapler is generally composed of an actuator, a cutting knife and other structures. During the operation, the tissue to be anastomosed is clamped and occluded in the actuator (including the staple cartridge assembly and the staple felt assembly), and the handle of the instrument gun is pressed to drive the cutting knife to separate the tissue, while the staples set in the staple cartridge assembly is pushed out and anastomosed to the tissue. [0003] Staplers are commonly used in laparoscopic surgery. Laparoscopic surgery is to transmit the images of various organs in the abdominal cavity captured by the camera inserted into the abdominal cavity to the screen through a small incision in the abdomen or chest. The doctor observes...

AI Technical Summary

Problems solved by technology

The steering mechanism achieves the purpose of large turning angle by setting double joints, and its steering angle can reach 60° on one side. operate

[0012] The cutting knife guard of this kind of steering mechanism is a flexible guard. When the actuator is subjected to a large resistance during the firing process of the instrument, it will generate a large reaction force on the cutting knife handle, and the flexible guard will react here. Elastic deformation will occur under the action of the actuator, which will cause the corner of the actuator to swing

The back and forth swing of the angle brings the risk of pulling and tearing the clamped tissue

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