机械评价的统一升空悬挂系统的机械评估
H Gholizadeh1, E D Lemaire1,2, R Salekrostam3
1Ottawa Hospital Research Institute, Centre for Rehabilitation Research and Development, Ottawa, Canada.
Canadian prosthetics & orthotics journal
|August 24, 2023
概括
与其他悬浮方法相比,Ossur Unity主动真空系统显著减少了假肢插座运动. 这种主动真空技术在测试过程中证明了对活塞的优越控制和更高的负载承受能力.
科学领域:
- 假肢和整形手术
- 生物机械工程 生物机械工程
- 材料科学 材料科学 材料科学
背景情况:
- 剩余的肢体位位位移是假肢悬浮质量的关键指标.
- 活动真空系统与非活动吸气系统相比,可以更好地控制垂直运动.
- 这项研究研究了 Össur Unity 主动真空系统的机械性能.
研究的目的:
- 通过使用 Össur Unity 主动真空系统机械评估四肢位位移.
- 为了比较活性真空悬浮剂与非活性真空和无吸附条件的性能.
- 评估不同假肢插座配置的承载能力和故障点.
主要方法:
- 评估了48种条件,涉及各种插座材料 (聚烯,PETG,烯,Thermolyn),内类型 (标准,高档) 和真空状态 (活跃,不活跃,没有吸收).
- 使用一台Instron 4428测试机器对假肢模具施加线性斜坡拉力负荷 (0-100N).
- 记录了模具和插座之间的位移,并测量了故障前的负载 (位移10毫米).
主要成果:
- 活性真空悬浮显示最小的平均位移 (0.30±0.16mm),优于非活性真空 (0.32±0.16mm) 和没有吸收 (0.39±0.22mm).
- 活动真空系统在故障之前承受了显著更高的负载 (812±221N),而非活动真空 (727±213N) 和无吸气 (401±184N) 相比.
- 在故障前的最高负载记录在一个圆柱状聚烯插座和高档内 (1142±53N) 上.
结论:
- 统一的活性真空系统在正常活动期间有效控制了活塞,并承受了高引负载.
- 所有测试的悬浮条件都在100N以下的负载下是可行的.
- 插座制造材料对悬挂系统的整体性能没有显著影响.
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