The Influence of Human Factors and Ergonomics on Data-Driven Design Criteria for a Handheld Skin Screening Camera System
TimeTuesday, April 132:20pm - 2:40pm EDT
LocationMedical and Drug Delivery Devices
DescriptionHuman factors and ergonomics research can provide blueprints for design criteria among at-home medical devices. This example focuses on the development of a handheld skin screening camera system, derived from a larger, extendable design (Olney et al., 2017). This study was conducted including Veterans with spinal cord injuries and Veterans with diabetes mellitus from the Minneapolis VAHCS, who reflect the intended primary user groups.
Wounds such as pressure injuries and ulcers have become an expected problem for those with spinal cord injuries (SCI) as well as those who experience diabetes mellitus (DM). These individuals are currently provided a mirror on a flexible handle to use as a means to view at-risk areas of their bodies for screening their skin from their health care team. Unfortunately, these mirrors can be more problematic to use rather than beneficial, including awkward positioning, or difficult to see for those with poor eyesight.
In order to develop a user-centered handheld skin screening camera, using human factors and ergonomics to drive design criteria, this project was developed in a multiphase approach. Users were interviewed over video conferencing to establish an understanding of their physical mobility and limitations such as dexterity as well as reach to areas of concern for skin inspection. Four prototype models, each with various forms of attachment to the hand, were also shown for feedback. Model designs and fastening options were rank-ordered by users for preference.
After the conclusion of first-round interviews, transcripts were coded and evaluated using a rapid qualitative data analysis. This analysis provided categorization or domains that related to human factors and ergonomics which would influence the design criteria and define user needs.
These design criteria were implemented into a new prototype iteration which was then shipped to the users for a second virtual interview with hands-on interaction. Users provided feedback on the overall design and gave scores on a usability evaluation questionnaire.
Results of the usability evaluation were overwhelmingly positive, suggesting that the outlined design criteria from the first phase of interviews yielded an effective prototype device. The larger impact of this device development could increase not only an individual’s health but also a sense of independence.