Development of mechanical lateral transfer device for patient transfer staff in a hospital
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Abstract
Patient transferring task is an activity that poses an ergonomic risk to healthcare workers. Using assistive devices is one way to reduce ergonomic risks. But with limited access to devices and the limited number of devices. Therefore, the researcher aims to develop an assistive device to reduce the ergonomic risks of patient transferring task. This research is a quasi-experimental study. A single sample group study was conducted with purposive sample of 8 healthy volunteers. Two types of tests were performed, manual patient transferring task and patient transferring task by using the assistive devices. Research instruments were questionnaires, ergonomic risk assessment form (REBA) and electromyography. The data will be collected and compared REBA score, muscle contraction force and the length of time in lateral transfer task between the manual patient transfer and the assistive devices by using Wilcoxon signed-rank test statistics. All of the participants in this research passed the inclusion and exclusion criteria. Participants were all male, average age 40.88 years, average weight 71 kg and average height 168.75 cm. The results showed that the REBA score while using mechanical lateral transfer device was 3.88 that significantly was lower than manual patient transferring (P < 0.001). The maximum voluntary contraction value (%MVC) of the Latissimus dorsi muscle and the Iliocostalis muscle while using mechanical lateral transfer device were 19.84% and 28.46%, respectively. The values were significantly lower than that of the manual patient transferring with the maximum voluntary contraction value (%MVC) of the Latissimus dorsi muscle and the Iliocostalis muscle were 32.46% and 34.46%, respectively (P < 0.01). The average time for manual patient transferring was 29 seconds, which was significantly shorter than using the mechanical lateral transfer device (79 seconds, P< 0.001). This research suggests that using the mechanical lateral transfer device can reduce the ergonomic risks of patient transfer staff, including inappropriate posture and back muscle contraction force.
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