Design Of Neck Brace For Burn Rehabilitation Based On Parametric Inverse Modeling

Jaw and neck burns tend to form scar hyperplasia and scar contracture,which seriously affect the progress of patients’ recovery and rehabilitation results.Therefore,how to improve the rehabilitation of patients with neck burn scar contracture has become a hot issue for many experts in the field.The treatment method that can effectively inhibit scar growth and scar contracture is pressure therapy-based orthoses,and the mainstream product is the thermoplastic splint neck brace.but the thermoplastic splint neck brace has problems such as low comfort in taking the mold,insufficient personalized matching,rough edges,poor permeability,and easy to cause skin breakdown in the bony area.With the development of rapid prototyping technology,the production of orthoses using 3D printing technology has become a cutting-edge research field,but in the field of medical rehabilitation,it has the disadvantages of imprecise acquisition of raw data and lack of 3D modeling skills of orthopedic physicians,which leads to poor clinical application.Therefore,improving the structure of the rehabilitation neck brace for burns and optimizing its design and processing process has become the focus of the subject research.Digital design is fast,accurate,and intelligent,and it has been applied to many types of product design,and its feasibility has been verified,but there is still a gap in the design of rehabilitation neck braces.Therefore,the study proposes to construct a digital design method for a 3D printed burn rehabilitation neck brace based on reverse engineering and parametric modeling to assist orthopedists to achieve rapid and accurate modeling of the neck brace.The method will improve the efficiency of personalization and the comfort of patients wearing and taking the mold.And the study will improve the shortcomings of a thermoplastic splint neck brace.The method asks the user to use a handheld scanner to collect the patient’s jaw and neck point cloud data,then the user uses reverse engineering software to optimize the data and inputs the digital design platform of the neck orthosis written in the Grasshopper plug-in.After that,the user can get the patient’s personalized burn rehabilitation neck brace through simple parameter adjustment.Then the user uses 3D printing technology to produce the burn rehabilitation neck brace product.Finally,the neck brace is completed by covering it with silicone pads and adding self-adhesive elastic bands.The study verified the effectiveness and superiority of the parametric-based reverse modeling design scheme through four experiments: modeling procedure efficiency test,modeling procedure deviation verification,neck brace pressure distribution analysis,and fuzzy comprehensive evaluation.In this study,reverse engineering and Grasshopper parametric modeling were applied to the design of a rehabilitation neck brace for burns to achieve rapid and accurate customization of the rehabilitation neck brace burns.The parametric modeling program for the burn rehabilitation neck brace was written to be easily accessible to orthopedic surgeons with no experience in using 3D software.The study provides a theoretical and practical reference for the application of digital design in rehabilitation medical orthoses.