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Details of an Individual Publication

CHI+MED project publication number

PP234

Bibliographic reference

Masci, P., Oladimeji, P., Curzon, P., & Thimbleby, H. (2014). Using PVSio-web to demonstrate software design issues in medical user interfaces. Proceedings of the 4th International Symposium on Foundations of Health Information Engineering and Systems with 6th International Workshop on Software Enginineering in Health Care (FHIES/SEHC 2014), in press.

Type of publication

Workshop paper/conference short paper (multiple reviewers, published)

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Abstract

We have used formal methods technology to investigate software and user interface design issues that may induce use error in medical devices. Our approach is based on mathematical models that capture safety concerns related to the use of a device. We analysed nine commercial medical devices from six manufacturers with our approach, and precisely identified 30 design issues. All identified issues can induce use errors that could lead to adverse clinical consequences, such as numbers being incorrectly entered. An issue with formal approaches is in making results accessible to developers, human factors experts and clinicians. In this paper, we use our tool PVSio-web to demonstrate the identified issues: PVSio-web allows us to generate realistic and interactive user interface prototypes from the same mathematical models used for analysis. Users can explore the behaviour of the prototypes by pressing buttons on realistic user interfaces that reproduce the functionality and visual representation of the real devices. Users can examine the device behaviour resulting from any interaction. Key sequences identified from analysis can be used to explore in detail the identified design issues in an accessible way.