Surgical instrument and bending control mechanism thereof

Abstract

The invention provides a surgical instrument and a bending control mechanism thereof. The bending control mechanism of the surgical instrument comprises a steering power input mechanism A, a steering power transmission mechanism B, a locking mechanism C and a linear power output mechanism D. Furthermore, the steering power input mechanism A and the steering power transmission mechanism B which are coaxially arranged have a rotatable angle range in the circumferential direction, and the steering power input mechanism A sequentially passes through relative angles which are respectively an angle I, an angle range II and an angle III during the process of being rotated from an angle at one end of the rotatable angle range to another angle at the other end relatively to the steering power transmission mechanism B, wherein the angle I or the angle III corresponds to a swerve, and the angle range II corresponds to a locking state. The surgical instrument and the bending control mechanism thereof can solve swerving and fixing problems of medical apparatus and instruments in a human body in surgery, and reduce risk in the surgery.

Description

technical field [0001] The invention relates to a bending control mechanism for a surgical stapler, in particular to a mechanism for controlling the turning and locking of the jaws of an endoscopic stapler. Background technique [0002] The working principle of the surgical stapler is to clamp the tissue by closing two corresponding jaws (commonly known as the nail anvil assembly and the staple cartridge assembly), and then push the metal staples in the staple cartridge into shape to suture the tissue together. In some staplers, a cutting knife is also installed to cut off the stitched tissue. [0003] With the advancement of technology, traditional surgical methods have gradually turned to laparoscopic surgery. Laparoscopic surgery is to make several small incisions with a diameter of 5 to 12 mm in different parts of the abdomen or chest. Through these small incisions, a camera lens and various special surgical instruments are inserted, and the images of each area in the ...

AI Technical Summary

Problems solved by technology

Due to the limitation of the space in the abdominal cavity or the thoracic cavity, the traditional linear endoscopic stapler cannot effectively reach the surgical site for clamping, transection, and anastomotic tissue in some extreme cases, so a stapler jaw (including anvil assembly) is required and staple cartridge assembly) bendable elbow stapler

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