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Development and functional demonstration of a wireless intraoral inductive tongue computer interface for severely disabled persons

STRUIJK, Lotte N S Andreasen
LONTIS, Eugen R
GAIHEDE, Michael
CALTENCO, Hector A
LUND, Morten Enemark
SCHIOELER, Henrik
BENTSEN, Bo
2016

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Purpose: Individuals with tetraplegia depend on alternative interfaces in order to control computers and other electronic equipment. Current interfaces are often limited in the number of available control commands, and may compromise the social identity of an individual due to their undesirable appearance. The purpose of this study was to implement an alternative computer interface, which was fully embedded into the oral cavity and which provided multiple control commands.

 

Methods: The development of a wireless, intraoral, inductive tongue computer was described. The interface encompassed a 10-key keypad area and a mouse pad area. This system was embedded wirelessly into the oral cavity of the user. The functionality of the system was demonstrated in two tetraplegic individuals and two able-bodied individuals

 

Results: The system was invisible during use and allowed the user to type on a computer using either the keypad area or the mouse pad. The maximal typing rate was 1.8 s for repetitively typing a correct character with the keypad area and 1.4 s for repetitively typing a correct character with the mouse pad area.

 

Conclusion: The results suggest that this inductive tongue computer interface provides an esthetically acceptable and functionally efficient environmental control for a severely disabled user.

Impact of structured wheelchair services on satisfaction and function of wheelchair users in Zimbabwe

VISAGIE, Surona
MLAMBO, Tecla
VAN DER VEEN, Judith
NHUNZV, Clement
TIGERE, Deborah
SCHEFFLER, Elsje
2016

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Background: Providing wheelchairs without comprehensive support services might be detrimental to user satisfaction and function.

 

Objectives: This paper compares wheelchair user satisfaction and function before and after implementation of comprehensive wheelchair services, based on the World Health Organization guidelines on wheelchair service provision in less resourced settings, in Zimbabwe.

 

Method: A pre- and post-test study with a qualitative component was done. Quantitative data were collected with the Quebec User Evaluation of Satisfaction with Assistive Technology for adults and children and the ‘Functioning Every day with a Wheelchair Questionnaire’. Data were collected from 55 consecutively sampled wheelchair users, who received a new wheelchair in the study period. Qualitative data were collected through two audio recorded focus groups and two case studies and are presented through narrative examples.

 

Results: The proportion of adult users who were satisfied significantly increased for all wheelchair and service delivery aspects (p = 0.001 - 0.008), except follow-up (p = 0.128). The same was true for children’s post-test ratings on all variables assessed (p = 0.001 - 0.04), except training in the use of the device (p = 0.052). The biggest improvement in satisfaction figures were for comfort needs (44.3%), indoor mobility (43.2%), outdoor mobility (37.2%), safe and efficient, independent operation (33.5%) and transport (31.4%). The qualitative data illustrated user satisfaction with wheelchair features and services.

 

Conclusion: The wheelchair service programme resulted in significant positive changes in user satisfaction with the wheelchair, wheelchair services and function. It is recommended that the Zimbabwean government and partner organisations continue to support and develop wheelchair services along these guidelines.

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