Elevated vacuum (EV) is suggested to improve suspension and limb volume management for lower limb prosthesis users. However, few guidelines have been established to facilitate configuration of EV sockets to ensure their safe and proper function. A benchtop model of an EV socket was created to study how prosthetic liner tensile elasticity, socket fit, and socket vacuum pressure affect liner displacement and subsequent pressure on the residual limb. A domed carbon fiber layup was used to represent an EV socket. Inserts were used to simulate various air gaps between the socket and liner. Various prosthetic liner samples were placed under the carbon fiber layup. Liner displacement and the corresponding pressure change underneath the liner were measured as vacuum was applied between the liner sample and socket wall. Tissue vacuum pressure increased linearly with socket vacuum pressure until the liner contacted the socket wall. Predicted tissue vacuum pressure matched well with experimental results. Findings suggest that the effect of vacuum pressure on the residual limb is primarily determined by air gap distance. The developed model may be used to assess effects of EV on residual limb tissues based on an individual's socket fit, liner characteristics, and applied vacuum. Understanding the physiological effects of EV on the residual limb could help practitioners avoid blister formation and improve EV implementation.

建议使用高真空 (EV) 来改善下肢假肢使用者的悬吊和肢体容量管理。然而，很少有指导方针可以促进电动汽车插座的配置，以确保其安全和正常功能。创建了 EV 插座的台式模型，以研究假肢衬里拉伸弹性、插座配合和插座真空压力如何影响衬里位移和随后对残肢的压力。一个圆顶碳纤维叠层被用来代表一个 EV 插座。插入物用于模拟承窝和衬垫之间的各种气隙。各种假肢衬垫样品放置在碳纤维叠层下方。当在衬管样品和承窝壁之间施加真空时，测量衬管位移和衬管下方相应的压力变化。组织真空压力随着承窝真空压力线性增加，直到衬垫接触承窝壁。预测的组织真空压力与实验结果匹配良好。研究结果表明，真空压力对残肢的影响主要取决于气隙距离。开发的模型可用于评估 EV 对残肢组织的影响，基于个人的插座配合、衬垫特性和施加的真空。了解 EV 对残肢的生理影响可以帮助从业者避免水泡形成并改进 EV 实施。研究结果表明，真空压力对残肢的影响主要取决于气隙距离。开发的模型可用于评估 EV 对残肢组织的影响，基于个人的插座配合、衬垫特性和施加的真空。了解 EV 对残肢的生理影响可以帮助从业者避免水泡形成并改进 EV 实施。研究结果表明，真空压力对残肢的影响主要取决于气隙距离。开发的模型可用于评估 EV 对残肢组织的影响，基于个人的插座配合、衬垫特性和施加的真空。了解 EV 对残肢的生理影响可以帮助从业者避免水泡形成并改进 EV 实施。