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. 2021 Mar 24;2:e1. doi: 10.1017/wtc.2021.1

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© The Author(s) 2021

This is an Open Access article, distributed under the terms of the Creative Commons Attribution licence (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted re-use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Figure 6. — Extensible exosuit prototype schematic. This extensible exosuit design consists of a trunk interface (a), two leg interfaces (b), two elastic bands (c), a waist belt (d), and the extension mechanism flaps (e). The trunk interface is coupled with the leg interfaces via the elastic bands, which each consist of an elastic (green) and inelastic (black) segment in series. The elastic bands were routed through the flaps. Exosuit disengaged: the mechanism flaps (and the elastic bands) are folded to the user’s sides so that the elastic bands do not stretch or apply device-to-body forces during movement. Exosuit engaged: the mechanism flaps are folded to the users’ back (creating the offset ) so that the elastic bands stretch and apply torque about the back and hips during tasks like lifting, bending, and stooping. The flaps rotate about hinges (dashed lines) which were spaced apart by 0.15 m ( ). The trunk interface anchoring points were spaced apart by 0.15 m as well ( ).

Inline graphic — Extensible exosuit prototype schematic. This extensible exosuit design consists of a trunk interface (a), two leg interfaces (b), two elastic bands (c), a waist belt (d), and the extension mechanism flaps (e). The trunk interface is coupled with the leg interfaces via the elastic bands, which each consist of an elastic (green) and inelastic (black) segment in series. The elastic bands were routed through the flaps. Exosuit disengaged: the mechanism flaps (and the elastic bands) are folded to the user’s sides so that the elastic bands do not stretch or apply device-to-body forces during movement. Exosuit engaged: the mechanism flaps are folded to the users’ back (creating the offset ) so that the elastic bands stretch and apply torque about the back and hips during tasks like lifting, bending, and stooping. The flaps rotate about hinges (dashed lines) which were spaced apart by 0.15 m ( ). The trunk interface anchoring points were spaced apart by 0.15 m as well ( ).