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Drug Safety

pp 1–8 | Cite as

Medical Devices: Classification and Analysis of Faults Leading to Harms

  • Robin E. FernerEmail author
  • Jeffrey K. Aronson
Original Research Article
  • 23 Downloads

Abstract

Introduction

Harms from medical devices are important, but have been much less well studied than adverse drug reactions. Information provided to device users is of variable quality.

Objective

Our aim was to define “medical device fault” and “adverse effect of a medical device”; to establish whether medical device faults arise in design, manufacture, or use; and to consider ways of mitigating the adverse effects of medical devices.

Methods

We analysed 100 consecutive faults reported by the US Food and Drug Administration (FDA) and 50 faults reported by the UK Medicines and Healthcare products Regulatory Agency (MHRA), and classified faults according to the point at which they occurred.

Results

Nearly 70% of reported faults related to devices that entered the body. Over 70% arose at the design stage, a quarter of the faults were associated with manufacture, and less than 5% were primarily caused by faulty use.

Conclusion

We defined a medical device fault as an unintended failure in the design, manufacture, or use of a medical device that leads to, or has the potential to lead to, harm to the patient, and an adverse effect of a medical device as an unintended and appreciably harmful effect, caused by a medical device, which demonstrates a hazard of the device and may warrant preventive measures, or a change in the mode of use, or withdrawal of the device. Most faults that generate warnings arise from problems at the design stage, some arise at the manufacturing stage, and a few in usage. Careful assessment of the design of safety-critical devices in the light of previous problems may help to prevent repetition of errors. It would be helpful if, in addition to user manuals, manufacturers were required to produce Summaries of Device Characteristics (SDCs, “labels”) that contained a systematically presented set of information about a product.

Notes

Acknowledgements

We are grateful to the International Society of Pharmacovigilance (ISoP) for allowing us to organize a symposium on medical devices, held at the ISoP 2018 meeting in Geneva, on which this and a companion paper are based.

Compliance with Ethical Standards

Funding

This work was unfunded.

Conflict of interest

Neither Robin Ferner nor Jeffrey Aronson has any relevant financial conflict of interest.

Supplementary material

40264_2019_879_MOESM1_ESM.docx (50 kb)
Supplementary material 1 (DOCX 50 kb)
40264_2019_879_MOESM2_ESM.docx (32 kb)
Supplementary material 2 (DOCX 32 kb)

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Copyright information

© Springer Nature Switzerland AG 2019

Authors and Affiliations

  1. 1.West Midlands Centre for Adverse Drug ReactionsCity HospitalBirminghamUK
  2. 2.Institute of Clinical SciencesUniversity of BirminghamBirminghamUK
  3. 3.Insitute of Cardiovascular MedicineUniversity College LondonLondonUK
  4. 4.Centre for Evidence Based MedicineNuffield Department of Primary Care Health SciencesOxfordUK

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