Setting the Record Straight on Usability & Human Factors

Global Medical Device Podcast · 3 Nov 2021 · 36m · Episode 234

What this episode covers

Mike Drues, a regulatory consultant for Vascular Sciences, joins host Jon Speer to clarify the distinction between usability and human factors in medical device development. They discuss how engineers often fail to test devices on actual end-users, leading to design flaws, and argue that FDA regulations are inconsistent, requiring extensive testing for simple devices while ignoring complex ones. The conversation emphasizes that usability testing should be risk-based, distinguishing between formative testing during development and summative testing after design freeze. Drues highlights the importance of realistic testing scenarios and warns against the 'tick-box' mentality that ignores off-label use risks.

Other shows on the same ground, closest first.

  • Let's Combinate · 46m

    049 - "What Does the Data Say?" with Shannon Hoste

    Shannon Hoste, President of Agilis Consulting and former FDA reviewer, explains the regulatory framework for combination products, detailing the distinct roles of CDRH, CDER, and DMEPA in human factors reviews. She clarifies the critical distinction between design validation and human factors validation, emphasizing that the latter focuses specifically on safe and effective use rather than all user needs. Hoste also discusses the methodology for summative evaluations, including the rationale for the N=15 sample size per user group and strategies for recruiting representative participants to identify use errors.

  • Let's Combinate · 1h 16m

    012 - "Asking then Seeing" with Sara Waxberg Mcnew

    Sara Waxberg McNew, Chief Scientific Officer at Design Science, explains the human factors process for medical devices, emphasizing the distinction between formative studies and summative validation. She details how to interpret ANSI/AAMI HE75 and IEC 62366-1 standards, manage risk for combination products, and handle regulatory submissions with the FDA. The discussion covers specific challenges like testing rare patient populations, using surrogates, and conducting threshold analyses for generics.

  • Let's Combinate · 34m

    258 - Combination Product Quality: Human Factors, CDMO Scorecards, ISO 14971 vs. ICH Q9, with Ben Locwin

    Ben Locwin, Vice President at Reliant Life Sciences, and Subhi Saadeh, Founder of Let's Combinate, discuss the divergent quality philosophies of pharmaceutical and medical device industries, focusing on combination products. They explain how human factors studies must account for different user types (HCP vs. lay) even with platform devices, and how CDMO scorecards often fail to reflect operational reality due to subjective weighting. The conversation details the differences between ISO 14971 and ICH Q9 risk management, emphasizing the need for FMEA as a living document updated with real-world data.

  • Let's Combinate · 36m

    104 -New FDA Guidance, HF vs. Design Validation, Critical Tasks & Pre-IND HF Studies with Sara McNew

    Sara McNew, Chief Scientific Officer at Design Science, discusses the new FDA Guidance on Human Factors for Combination Products, clarifying the distinction between human factors validation and broader design validation. She explains that pre-IND studies must demonstrate that clinical trial participants can use the device correctly to ensure accurate pharmacokinetic data, requiring a hybrid of formative and summative rigor. McNew details how critical task definitions now include administration and dosing errors, not just serious harm, and emphasizes the importance of submitting comprehensive Use Related Risk Assessments (URRA) alongside HF summaries.

  • Being an Engineer · 51m

    S6E33 Bryant Foster | Design for Human Factors & User Experience

    Bryant Foster, Vice President of Human Factors and User Experience at Research Collective, discusses his background in cognitive psychology and his work with clients like Google, GE Healthcare, and Medtronic. He explains how his team uses advanced usability testing tools, including eye tracking, pupilometry, and facial emotion analysis, to measure cognitive load and objective user behavior rather than relying on potentially dishonest self-reports. Foster details methodologies for ensuring medical device safety, such as use-related risk analysis and task analysis, and shares insights from his time at Google X on the importance of defining clear research questions. He also covers cost-effective approaches like heuristic evaluations and the importance of providing constructive, solution-oriented feedback to engineering teams.

The summary, chapters and topics are generated from the episode’s audio by this directory, not written by Global Medical Device Podcast. The episode itself belongs to its publisher.