A scalable rigidity serpentine carrier for natural orifice surgery

Abstract

Disclosed are an expandable serpentine carrier with variable rigidity for natural orifice transluminal endoscopic surgery and a method for using the serpentine carrier. The serpentine carrier is mainly formed of woven tubes and a hot-melt adhesive, the variable rigidity function thereof relies on changing the state of the hot-melt adhesive, and the degree of change in size relies on the property of the woven tubes themselves and is realised by wire driving.The provided expandable serpentine carrier with variable rigidity for natural orifice transluminal endoscopic surgery has excellent flexibility, can realise large curvature bending, has a stronger capability for adapting complex human orifice environments, and after entering a human body, is supported by a driving wire, having a large diameter state for opening human tissue, providing a larger orifice pathway. After having a large diameter, the two states of rigidity and flexibility can be changed by controlling heat input and output, which can protect a human orifice subjected to a surgical instrument from stab or cutting wounds and provide support to the instrument, increasing stability and improving surgical precision.

Description

technical field [0001] The invention belongs to the field of natural orifice surgery, and relates to a serpentine carrier with expandable stiffness for natural orifice surgery. Background technique [0002] As a research hotspot in the medical field, natural orifice transluminalendoscopic surgery (NOTES) has the advantages of less interference to the internal environment, less pain, shorter hospital stay, and no skin scars compared with traditional surgical methods. The so-called natural orifice surgery refers to the surgical mode in which surgical tools enter the human body through the orifice of the human body, including the oral cavity, vagina, anus, etc., and reach the lesion for surgical operation. With the development of science and technology, the difficulties of natural surgery are gradually being overcome, and natural orifice surgery is moving from experiment to clinical practice, and has a good development prospect. [0003] In order to adapt to the structure of t...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to overcome the deficiencies of the existing surgical tools, and propose an expandable serpentine carrier with variable stiffness, which can not only ensure the operation accuracy of the surgical tool through the conversion of rigid and flexible states, but also protect the human body; it can also change the scale to solve the problem. Contradictions with the scale of the human cavity

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