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BS EN 62366:2008

$200.03

Medical devices. Application of usability engineering to medical devices

Published By Publication Date Number of Pages
BSI 2008 104
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Specifies a process for a manufacturer to analyse, specify, design, verify and validate usability, as it relates to safety of a medical device. This usability engineering process assesses and mitigates risks caused by usability problems associated with correct use and use errors, i.e. normal use. It can be used to identify but does not assess or mitigate risks associated with abnormal use. If the usability engineering process detailed in this International Standard has been complied with and the acceptance criteria documented in the usability validation plan have been met, then the residual risks, as defined in ISO 14971, associated with usability of a medical device are presumed to be acceptable, unless there is objective evidence to the contrary. This International Standard does not apply to clinical decision-making relating to the use of a medical device.

PDF Catalog

PDF Pages PDF Title
5 English
CONTENTS
7 INTRODUCTION
8 1 Scope
2 Normative references
3 Terms and definitions
12 4 Principles
4.1 General requirements
13 4.2 Usability engineering file
4.3 Scaling of the usability engineering effort
5 Usability engineering process
5.1 Application specification
14 5.2 Frequently used functions
5.3 Identification of hazards and hazardous situations related to usability
15 5.4 Primary operating functions
16 5.5 Usability specification
5.6 Usability validation plan
17 5.7 User interface design and implementation
5.8 Usability verification
18 5.9 Usability validation
6 Accompanying document
19 7 Training and materials for training
20 Annex A (informative) General guidance and rationale
25 Figure A.1 – A comparison of the risk management process (ISO 14971:2007) and the usability engineering process (IEC 62366)
32 Annex B (informative) Categories of user action
33 Figure B.1 – Categories of foreseeable user action
34 Annex C (informative) Examples of use errors, abnormal use and possible causes
37 Annex D (informative) Guidance on the usability engineering process
38 Tables
Table D.1 – Sample of design flaws and associated use errors
40 Figure D.1 – A user interface design cycle
Table D.2 – Mapping of Figure D.1 to the subclauses of this International Standard
43 Table D.3 – Examples of user interface requirements
48 Table D.4 – Typical deliverables
51 Table D.5 – Examples of objective usability goals
Table D.6 – Examples of subjective usability goals
53 Figure D.2 – Bubble diagram of the conceptual model of a physiological monitor
54 Table D.7 – Examples of user interface modelling techniques
Table D.8 – Characteristics of a typical usability testing effort
61 Annex E (informative) Questions that can be used to identify medical device characteristics associated with usability that could impact on safety
65 Annex F (informative) Examples of possible usability related hazardous situations
Table F.1 – Glossary of relevant risk management terms
66 Figure F.1 – Pictorial representation of the relationship of hazard, sequence of events, hazardous situation and harm
Table F.2 – Examples of harm due to usability related hazards
68 Annex G (informative) Usability goals: Illustrative example for a home parenteral infusion pump
71 Table G.1 – Power on/off
Table G.2 – Program pump
72 Table G.3 – Start/stop infusion
73 Table G.4 – Monitor infusion status
Table G.5 – Install and change set
74 Table G.6 – Priming
Table G.7 – Respond to and inactivate alarm signals a
75 Table G.8 – Lockouts
Table G.9 – Power management
76 Table G.10 – Preventative and routine maintenance
77 Table G.11 – Basic operation
Table G.12 – Advanced functions
78 Annex H (informative) Sample usability specification and its inputs
88 Annex I (informative) Recommended reading list
96 Annex J (informative) Reference to the essential principles
Table J.1 – Correspondence between this document and the essential principles
97 Bibliography
99 Index of defined terms
BS EN 62366:2008
$200.03