Development and evaluation of one-hand drivable manual wheelchair device for hemiplegic patients

Development of Transport for Disabled People on the Example of Wheelchair Propulsion with Cam-Thread Drive

The increasingly frequent use of electric drives is a new direction of development in personal transport. Sometimes these drives take over the work of human muscles, and sometimes they only support them. This is particularly evident in means of transport such as bicycles and scooters, but also in transporting people with disabilities. This study questions whether this is the only right development direction, and explores the possibility of developing means of transport for the more effective use of human muscles by proposing new structural solutions. We identified that such an action favors the minimization of the environmental load generated by technical facilities and, at the same time, may be a response to social needs resulting from the principles of sustainable development. This paper presents the operation principle of the innovative Wheelchair Cam-thread Drive (WCD), followed by field tests, laboratory measurements and biomechanical analyses of the WCD, comparing it with a typical Wheelchair Push-rim Drive (WPD). We found that the WCD allows efficient driving on flat and level surfaces, but its propulsion method can adversely alter the location of the center of gravity on the human-wheelchair system. A brake is also required to control the driving speed. Ultimately, the WCD was found to put less strain on the human movement system, so it could be used for rehabilitation exercises. The WCD appears to be a promising design, deserving further research into the drive biomechanics and the optimization of the mechanism operation. Such an innovative manual drive presents an interesting alternative to electric drives.

Ergonomic design and evaluation of a novel laptop desk for wheelchair users

BACKGROUND

Nowadays, although using laptops to perform many routine activities is inevitable, many wheelchair users are not able to efficiently use their laptops due to their movement limitations and inappropriate workstations.

OBJECTIVE

The purpose of this study was to design and evaluate a novel ergonomic laptop desk for wheelchair users by considering their movement limitations.

METHODS

In this experimental study, we ergonomically designed and assessed a novel laptop desk in two phases in a laboratory. In the first phase of the study, design specifications were identified by an expert panel; accordingly, a new laptop desk was designed and prototyped for the wheelchair users. In the second phase, in order to evaluate the laptop desk, 14 wheelchair users were asked to complete a typing task within 20 minutes, both with and without using the laptop desk. Postural risk level, perceived discomfort, and task performance were evaluated using the Rapid Upper Limb Assessment (RULA) technique, Local Perceived Discomfort (LPD) questionnaire, and the number of letters typed and typing errors, respectively.

RESULTS

The postures of the wrist, arm, and neck regions were corrected from RULA action level 3 to 2 when the designed laptop desk was used. In addition, the average perceived discomfort of the participants significantly decreased in the neck, shoulder, and wrist regions. Furthermore, typing accuracy was improved significantly when novel laptop desk was used.

CONCLUSIONS

Accommodating wheelchair user's workstation with the novel designed laptop desk could reduce musculoskeletal disorders risk factors and help wheelchair users to perform their work more efficiently.

A study on the effects of modified wheelchair skills program (WSP) for hemiplegic clients

The purpose of this study was to evaluate the modified WSP for improving wheelchair skills capacity, perceived satisfaction and performance in daily activities for hemiplegia patients in Korea. The modified WSP was tailored to better fit the environment and the treatment needs of hemiplegic patients in Korea. The resulting training procedure was augmented to help hemiplegic patients understand the basic mechanics of the wheelchair. To assess the efficacy of the modified WSP, 24 hemiplegic patients were selected as subjects and WST, COPM, K-MBI, and subjective opinion surveys were utilized. The results of the training showed significant improvement of WST, COPM, K-MBI scores in the experimental group and especially, the WST and COPM score showed statistically insignificant improvement compared to the control group. A modified WSP may prove effective for hemiplegic patients who exhibit low volition or are experiencing wheelchair use for the first time.

An exploration of the experiences of Brazilian hemiplegic manual wheelchair users

Purpose: The objective of this research was to explore the experiences of 11 hemiplegic users with their manual wheelchairs.Method: The phenomenological approach explored the subjective experiences of Brazilian hemiplegic manual wheelchair users in order to identify and describe the factors that affected their relationship with their wheelchair. Using in depth semistructured interviews. The data were analysed using thematic analysis. The health records from the physiotherapy service of the Health Department of Itajaí were reviewed to identify hemiplegic wheelchair users.Results: The results identified 4 key themes: heteronomy, inadequate/inappropriateness of wheelchair design, poor state of the pavements and roads prohibiting wheelchair use and lack of suitable wheelchair provision.Conclusion: The findings confirm that current manual wheelchair provision, both new and secondhand, for this group of users is inadequate and they highlighted the issues and problems arising from the current provision. A novel finding was the identification of heteronomy that resulted from the provision of unsuitable equipment.Implication for rehabilitationAdding into physiotherapy and occupational therapy education, the importance of matching technology to the user in their environment.The importance of involving the user in decisions made about wheelchair provision.Sharing findings with wheelchair manufacturers to improve manual wheelchair design for hemiplegic users.

A percepção de qualidade de vida de pessoas com deficiência motora: diferenças entre cadeirantes e deambuladores

RESUMO A rotina das pessoas com deficiência física inclui o uso de diferentes recursos de tecnologia assistiva, que podem auxiliar em seu desenvolvimento físico e intelectual, afetando diretamente sua qualidade de vida. O objetivo deste estudo foi avaliar a percepção da qualidade de vida de pessoas cadeirantes e deambuladoras com deficiência física no município de Itajaí, Santa Catarina. Trata-se de uma pesquisa descritiva de corte transversal e caráter exploratório quantitativo, cuja. amostra foi constituída por 163 participantes (91 cadeirantes e 72 deambuladores), que responderam a um questionário estruturado com informações socioeconômicas e de saúde e ao instrumento do World Health Organization Quality of Life Instruments (WHOQOL-bref), para mensurar a qualidade de vida. Na avaliação dos domínios físico e psicológico não foram observadas diferenças significativas entre os dois grupos, portanto a percepção da qualidade de vida não foi afetada pela utilização da cadeira de rodas. No entanto, examinando-se o domínio de relações sociais e meio ambiente, a percepção da qualidade de vida foi significativamente menor para cadeirantes com paresias, em relação às plegias e à amputação.