Scissors for minimally invasive surgery with flexibility and rotation resistance

Abstract

The invention discloses a pair of scissors for a minimally invasive surgery with flexibility and rotation resistance. The pair of scissors comprises an operation part, a flexible extension part and a control part, wherein the flexible extension part comprises a flexible hose arranged in the center, at least two strand coiling layers which are stacked and sheathe the outer wall of the flexible hose and a transmission rope arranged in the flexible hose in a penetrating way, each strand coiling layer is formed by coiling at least five strands from one end of the flexible hose to the other end of the flexible hose, and coiling directions of any two adjacent strand coiling layers are opposite; the operation part comprises a first scissor body and a second scissor body which are intersected and pivoted by virtue of a connecting shaft pin as well as an operation device used for controlling the first scissor body and the second scissor body to act, the front end of the transmission rope is connected with the operation device, and the rear end of the transmission rope is connected with the control part, so that the operation device drives the first scissor body and the second scissor body to do opening-closing movement relative to each other under the action of the transmission rope.

Description

technical field [0001] The invention relates to a medical instrument, in particular to an operation scissors. Background technique [0002] Minimally invasive surgery refers to making several perforations on the surface of the human body, and inserting the endoscope and operating instruments into the body cavity through the above-mentioned small holes, such as the abdominal cavity, chest cavity, joint cavity, etc. Operate the instrument outside the body of the patient, so that the working end of the instrument extends into the patient's body cavity to resect the lesion in the cavity, or perform operations such as repairing and suturing the organ, and after the operation, take out the endoscope and instrument, and suture the small hole on the body surface The entire operation can be completed. [0003] The traditional scissors for minimally invasive surgery control the opening and closing of the scissor head by operating the movable handle of the scissor handle. It is impos...

AI Technical Summary

Problems solved by technology

However, the cannula of the minimally invasive cardiac surgery scissors designed in this patent application still cannot achieve a large curvature bending effect, and at the same time, when the scissors need to rotate clockwise or counterclockwise after cutting off the target object, the cannula is also difficult to move the force from the handle. Torque is smoothly transmitted to the tool holder

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