3D打印个性化大腿假肢接受腔形性协同制造策略

The prosthetic socket provides the critical attachment between the residual limb following amputation and the prosthetic device, without which the prosthetic device cannot work properly. The purpose of this study was to present a quick-responded framework for the customized manufacturing of low-cost prosthetic socket, using material extrusion technology (MEX). The required mechanical property of the prosthetic socket was proposed through the biomechanical analysis of residual limb and prosthetic socket. Based on that, the suitable manufacturing material is selected through the systemically research on the impact of material and process parameter on the mechanical properties of the printed parts. Then, the process parameters and the printing strategy are further optimized to improve the interlaminar tensile strength, especially for the structures with specially required mechanical properties and geometrical mutations. Finally, the manufactured prosthetic socket indicated the effectiveness and feasibility of the collaborative manufacturing strategy of shape and material properties. The clinical application showed that compared with the traditional prosthetic socket, the 3D printing prosthetic socket in this study can offer better comfort and functionality.