Table 7.

Overview of the spring-blades and hybrid devices.

Scenario	DOF	Low-level Control	High-level Control	TRL	Year and Related works
R	2, W: flex/ext, ulnar/radial dev	Motion	Buttons-triggered	4	2018 [42]
R	2, W: flex/ext, radial/ulnar dev	Position	EEG-based attention trigger	5	2019 [72]
A	2, S: flex/ext, E: flex/ext	Position	Reed switches trigger forward and backward driving	5	2015 [46, 47]
I	1, S: elev	Pressure	–	4	2019 [44]
R	2, E: flex/ext, W: flex/ext	Pulse-width (NMES), pressure	EMG trigger	5/6	2020 [45]

S = shoulder, E = elbow, W = wrist, flex = flexion, ext = extension, dev = deviation, elev = elevation, R = rehabilitation, A= assistance, I = industrial