Development Of Personalized Medical Devices Based On Additive Manufacturing

With the development of society and the advancement of medical,people's requirements for medical devices are constantly improved.In recent years,the application of additive manufacturing technology in medical field has deepened,and the advantages of its rapid prototyping process characteristics,such as medical models,personalized implants,and auxiliary devices,have greatly promoted the quality of medical procedures and rehabilitation effect.This project develops and studies medical devices in three medical disciplines based on the additive manufacturing process.(1)For the second or third stage of femoral head necrosis,in the case of femoral head collapse after core decompression,it is necessary to implant the femoral head internal implant,and the spherical structure after the expansion is performed on the collapsed part.Strong support.Based on the original research,this paper designs and improves the appearance and size of the implant and the surface modification of the spring piece.Animal experiments were carried out,and the biocompatibility and osteolysis of the materials were evaluated from three aspects: general observation,imaging observation and sample tissue observation.Through finite element analysis and dynamic fatigue test,it proved that the effect of the implant to prevent collapse is obvious.The ejector structure of the core opening device is optimized,and the bone pushing device realizes the linkage of the ejector during the pushing process,which reduces the risk of process slippage.(2)A personalized resistance device was developed for the apnea syndrome.The blocker adopts a link type structure and is composed of a solid toothing and a connecting rod.The solid toothing device is made by tooth data scanning,structural optimization fitting,3D printing production,and lamination.The connecting rod design collects a certain design sample amount through clinical data,determines the basic size of the connecting rod structure,and performs the connecting rod on the connecting rod.Strength analysis and parametric modeling.After the design was completed,it was produced by 3D printing.Later,several volunteers were recruited to verify the clinical effect of the snoring device.The results showed that the sputum effect was obvious.(3)The research and development of personalized rehabilitation protective gear has been carried out.Through the scanning,data extraction,structural design,topology optimization and functional feature design steps of the fractured part,the design of the protective gear is completed,and then the protective body is made through the 3D printingprocess.And verify the performance of some protective gear.The effect of the protective gear was confirmed by two trauma patients.The results showed that the soft tissue matched with high matching,accurate fixation and strength meet the requirements.This topic provides a clinical theoretical basis and solution for the treatment of related diseases through the development of several medical devices based on additive manufacturing,which has certain clinical application significance.