Control Interfaces for Operating Assistive Devices

Condition(s) studied

Investigational drug(s) / intervention(s)

Comparison of 5 interfaces used to capture user intent to operate a neuroprosthesis: No intervention

Study summary

Neurinnov, in collaboration with the CBV USSAP center and the CAMIN INRIA team, has conducted clinical investigations using various control interfaces, including EMG, IMU, contact sensors, and voice commands, to operate a motor neuroprosthesis. This neuroprosthesis is based on neural electrical stimulation, enabling the activation of multiples muscles via a single electrode. The clinical investigations have successfully demonstrated the feasibility of achieving grasping movements induced by neural electrical stimulation, which are controlled by the participant through external interfaces.

These external interfaces were based on existing technologies but were only suitable for research purposes due to their lack of portability. The current investigation aims to validate fully portable interfaces designed by Neurinnov, which are intended to be integral components of a future medical device that includes an implanted stimulator and its neural electrodes. The study's goal is to demonstrate that these interfaces can be used by participants with sufficient success rate (clinical performance) to support daily use.

Our main hypothesis is that the participants can effectively use at least two of the six control interfaces presented to them to detect their intention to perform a motor action within a software environment under constant conditions. These interfaces include voice commands, inertial measurement unit (IMU) sensors, surface electromyography (EMG) sensors, switch, joystick, and earswitch.

Eligibility

Primary outcome measure(s)

• Efficacy indicators — At Day 1
  Success rate: describes the ability of a control interface to execute requested functions under specified conditions Evaluation criterion: (Number of correctly recognized commands) / (Number of correctly recognized commands + Number of incorrectly recognized commands). Rate in percentage %

Trial sites (1)