Flexible minimally invasive surgical instrument based on natural orifice

Abstract

The invention discloses a flexible minimally invasive surgical instrument based on a natural orifice. The flexible minimally invasive surgical instrument based on the natural orifice comprises a flexible catheter; the left end of the flexible catheter is rotationally connected with a mounting head through a connecting block; wire holes are fixedly formed in the upper end and the lower end of the connecting block; a transmission rope penetrates through the wire holes; the left side of the mounting head is rotationally connected with an opening and closing clamp; the outer side of the opening and closing clamp is fixedly connected with a spring; and the center of the interior of the mounting head is in sliding connection with a limiting block. According to the flexible minimally invasive surgical instrument based on the natural orifice, the surgical instrument can do multi-degree-of-freedom movement in an output space, is flexible in action and large in operating force, and is more suitable for a minimally invasive surgery with complex actions; and the tail end of the instrument can be controlled through swinging and rotating of the wrist and pressing of the thumb on a pull rod, andlarge-range movement is not needed, so that fatigue of doctors is relieved.

Description

technical field [0001] The invention relates to the technical field of medical instruments, in particular to a flexible minimally invasive surgical instrument based on a natural cavity. Background technique [0002] Minimally invasive surgery, as the name implies, is minimally invasive surgery, which refers to the use of laparoscopy, thoracoscopic and other modern medical equipment and related equipment. The advantages of minimally invasive surgery are small trauma, light pain, and quick recovery. During the process, doctors perform surgical tasks with the help of slender minimally invasive surgical instruments. [0003] During the implementation of the operation, due to the special mapping relationship between the movement of the end of the surgical instrument and the movement of the hand-held part of the instrument, the doctor needs to hold the surgical instrument in a large range of motion, which reduces the flexibility of the end of the instrument to perform surgical act...

AI Technical Summary

Problems solved by technology

[0003] During the operation, due to the special mapping relationship between the movement of the end of the surgical instrument and the movement of the hand-held part of the instrument, the doctor needs to hold the surgical instrument in a large range of motion, which reduces the flexibility of the end of the instrument to perform surgical actions, and it is also easy to cause fatigue to the doctor , but limited by the size of natural orifice surgical instruments, existing surgical instruments have fewer degrees of freedom at the ends and a small working space, making it difficult to complete complex operations

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