A usability study in patients with stroke using MERLIN, a robotic system based on serious games for upper limb rehabilitation in the home setting

Neuroscience and neurotechnology are transforming stroke rehabilitation. Robotic devices, in addition to telerehabilitation, are increasingly being used to train the upper limbs after stroke, and their use at home allows us to extend institutional rehabilitation by increasing and prolonging therapy. The aim of this study is to assess the usability of the MERLIN robotic system based on serious games for upper limb rehabilitation in people with stroke in the home environment.This research is part of a MERLIN project, which has received funding from EIT Health (Grant no. 20649). EIT Health is supported by the European Institute of Innovation and Technology (EIT), a body of the European Union which receives support from the European Union’s Horizon 2020 Research and innovation programme

MERLIN: Upper-Limb Rehabilitation Robot System for Home Environment

ArmAssist is a cost-effective robotic system for post-stroke upper-limb rehabilitation. The system incorporates the ArmAssist Assessment platform based on serious games that enables fast, quantitative and automatic evaluation of the arm functions. The aim of the MERLIN European project is to bring this system to the patients’ homes to personalize the therapy with reduced supervision while increasing the number of movement repetitions to improve the effectiveness. To this end, the ArmAssist system developed by TECNALIA, has been integrated with GMV’s Antari Home Care platform, to customize and supervise the training remotely. Additionally, several technical improvements have been done to enhance the usability and functionality of the system according to the patients and therapists’ feedback. In this paper, the technical progress of the MERLIN system is presented.EIT Health. 20649. MERLI

A usability study in patients with stroke using MERLIN, a robotic system based on serious games for upper limb rehabilitation in the home setting

Background: Neuroscience and neurotechnology are transforming stroke rehabilitation. Robotic devices, in addition to telerehabilitation, are increasingly being used to train the upper limbs after stroke, and their use at home allows us to extend institutional rehabilitation by increasing and prolonging therapy. The aim of this study is to assess the usability of the MERLIN robotic system based on serious games for upper limb rehabilitation in people with stroke in the home environment. Methods: 9 participants with a stroke in three diferent stages of recovery (subacute, short-term chronic and long term chronic) with impaired arm/hand function, were recruited to use the MERLIN system for 3 weeks: 1 week training at the Maimonides Biomedical Research Institute of Cordoba (IMIBIC), and 2 weeks at the patients’ homes. To evaluate usability, the System Usability Scale (SUS), Adapted Intrinsic Motivation Inventory (IMI), Quebec User Evaluation of Satisfaction with assistive Technology (QUEST), and the ArmAssist Usability Assessment Questionnaire were used in the post-intervention. Clinical outcomes for upper limb motor function were assessed pre- and post-intervention. Results: 9 patients participated in and completed the study. The usability assessment reported a high level of satisfaction: mean SUS score 71.94% (SD=16.38), mean QUEST scale 3.81 (SD=0.38), and mean Adapted IMI score 6.12 (SD=1.36). The results of the ArmAssist Questionnaire showed an average of 6 out of 7, which indicates that MERLIN is extremely intuitive, easy to learn and easy to use. Regarding clinical assessment, the Fugl-Meyer scores showed moderate improvements from pre- to post-intervention in the total score of motor function (p=0.002). There were no signifcant changes in the Modifed Ashworth scale outcomes (p=0.169). Conclusions: This usability study indicates that home-based rehabilitation for upper limbs with the MERLIN system is safe, useful, feasible and motivating. Telerehabilitation constitutes a major step forward in the use of intensive rehabilitation at home.This research is part of a MERLIN project, which has received funding from EIT Health (Grant no. 20649). EIT Health is supported by the European Institute of Innovation and Technology (EIT), a body of the European Union which receives support from the European Union’s Horizon 2020 Research and innovation programme.Ye