Research On 3D Modeling Of Upper Respiratory Intubation Simulation Experiment

Upper respiratory intubation is an important rescue measure with reliable ventilation effect,short intubation time and moderate technical requirements.However,endotracheal intubation completely depends on the doctor’s proficiency,and the success rate of initial intubation is low for anaesthetists with lack of experience.In the face of infectious disease patients,doctors may be infected,so closed intubation cannot be achieved.The robot intubation can reduce the doctor’s work intensity,ensure the doctor’s safety and improve the intubation success rate.The temporomandibular joint of the existing upper respiratory tract model on the market is too simplified and has a great difference from the human temporomandibular joint,which cannot meet the requirements of robot intubation experiment.In this paper,the structure and movement of the three-dimensional model of the upper respiratory tract were studied,including the anatomical study of the human upper respiratory tract and the establishment of mathematical model.Study on mandibular structure and movement;Study on temporomandibular joint high accessory mechanism;Kinematics and dynamics of 3d model of upper respiratory tract;The main work and research contents are as follows.Study of human anatomy and intubation techniques.Based on the results of human anatomy,the structure of the temporomandibular joint,the main muscles and ligaments of the upper respiratory tract were studied in detail.Based on CT imaging technology,the motion characteristics of TMJ and the traction function of muscle group were analyzed in detail.To carry out research on manually operated endotracheal intubation technology and analyze and compare the differences of robot operation.Study on the high accessory structure of temporomandibular shutdown.According to the characteristics and specific size of temporomandibular joint,the degree of freedom and structural size of each part of the joint,as well as the data of muscle access point were determined.According to the motion characteristics of real human temporomandibular joint,a three-dimensional model of upper respiratory tract was established by mechanical principle.According to the theory of mechanical design,the specific mechanism of further calculation and selection and check.(3)Kinematics and dynamics of the model.Based on the mechanism of high pair motion,the temporomandibular joint motion was analyzed and the motion equation was established.The motion trajectory of mandibular incisors and mandibular condyles in the upper respiratory tract model was obtained by ADAMS motion simulation,and the displacement,velocity and acceleration parameters of the motion trajectory were calculated.(4)Finite element analysis of temporomandibular joint.The Simulation module Solid Works2016 was used to complete the finite element analysis of the main force components of the temporomandibular joint bionic mechanism.Gear shaft static analysis and fatigue analysis,and transmission gear static analysis and motion simulation.The highlights and characteristics of the research work are embodied in the mechanism innovation of the upper respiratory tract model.The high pair mechanism is used to achieve the temporomandibular joint bionics,and the fan-shaped gear and rack and pinion structure is used to achieve the temporomandibular joint bionics.