Running Blade

  • Made of PAN/graphene carbon fiber (CF) composite
    • Compared to PAN-based CF:
      • Material strength increases by 225% [17]
      • Elastic modulus increases by 184% [17]
    • Graphene component is ideal for energy storage [17]
  • C-shaped blade
    • Similar designs (e.g., Össur Flex-Run) experienced natural recoil that propelled runners forward [22]
      • Less exertion for running
Flex-Run™ with Nike Sole

Össur Flex-Run with Nike Sole [24].

Coupling Liner

(e.g., silicone gel, foam, elastomer, 3D spacer fabric)

Test different kinds of liners → predominantly user preference

Coupling

  • Reversible Adjustable Coupling (RAC) made from POM → Most cost effective [23]

References

[17]: Gao, Z., et al., Graphene reinforced carbon fibers. Sci Adv, 2020. 6(17): p. Eaaz4191.

[22]: Noroozi, S., et al., Dynamic characterisation of ossur Flex-Run prosthetic feet for a more informed prescription. Prosthetics and Orthotics International, 2019. 43(1): p. 62-70.

[23]: Sasaki, K., et al., The reversible adjustable coupling: A lightweight and low-cost alignment component for the lower limb prosthesis. Journal of Rehabilitation and Assistive Technologies Engineering, 2017. 4: p. 2055668317706427.

[24]: “Flex-Run™ with Nike Sole.” Össur, 2020, www.ossur.com/is-is/gervilimir/faetur/flex-run-with-nike-sole.