Training Decay Selection for Medical Product Usability Validation: A Roadmap for Empirical Training Decay Curve Calculation

Training Decay Selection for Medical Product Usability Validation: A Roadmap for Empirical Training Decay Curve Calculation

In this blog post, we will provide an update on the UserWise and San Jose State University joint research grant sponsored by the Food and Drug Administration (FDA) about training decay of medical devices. This content was presented as a poster at the 2019 International Symposium on Human Factors and Ergonomics in Health Care …

Read More

FDA’s Dr. Feng Presents on Do’s and Don’ts for Human Factors Data in CDRH Premarket Submissions

FDA’s Dr. Feng Presents on Do’s and Don’ts for Human Factors Data in CDRH Premarket Submissions

At the 2019 International Symposium on Human Factors and Ergonomics in Health Care, Xin Feng, Ph.D. offered some useful tips for medical device manufacturers on how to avoid common missteps during the premarket submissions process. Dr. Feng, a Human Factors Reviewer at the FDA’s Center for Devices and Radiological Health (CDRH), covered a range of issues (summarized below) that arise during the Human Factors and Usability Engineering Process…

Read More

How to Enhance User Experience of Connected Devices for Digital Health Platforms

How to Enhance User Experience of Connected Devices for Digital Health Platforms

On January 15th, 2019, Shannon Clark, CEO of UserWise, led a workshop at the 11th Annual European Pre-Filled Syringes and Injectable Drug Devices conference by SMi, in London.  At the conference, new technologies and innovations for platform systems of injectable delivery devices as well as the impact of digitalization and patient centricity with regulatory compliance were explored…

Read More

Improving Medical Device Complaint Management with Human Factors

Improving Medical Device Complaint Management with Human Factors

In this blog post we discuss how best to integrate Human Factors Engineering with Complaint Management. The content from this post was presented at a poster session at the Human Factors Engineering Society’s Human Factors and Ergonomics in Health Care Conference…

Read More

Can you combine human factors and clinical testing successfully?

Can you combine human factors and clinical testing successfully?

Due to perceptions around cost and time savings, medical device and combination product manufacturers frequently consider the option to combine human factors testing with clinical (or pre-clinical) testing. Shannon Clark, UserWise CEO, and Denise Forkey, UserWise Human Factors Specialist, recently presented on this topic at the 4th Annual human Factors Excellence for Medical Device Design in Minneapolis where …

Read More

Interview with Jeff Durney, Ambulatory Human Factors Specialist

Interview with Jeff Durney, Ambulatory Human Factors Specialist

During the initial training on a new procedure or device, Jeff once asked, “it’s great that you’re signing folks off on real experience in a simulator, but do you assess their skills and prevent them from working with real patients unless they demonstrate they could do their job on a simulator?”  The surgeons reacted with surprise about putting their jobs on the line in such a way.  Jeff noted that this is what pilots do, they put their jobs on the line. 

There’s a move now in healthcare towards focusing on outcomes. There is talk of…


Read More

UserWise Celebrates 3 Year Anniversary

UserWise Celebrates 3 Year Anniversary

Founded in 2015, UserWise set out with a mission to inspire usability engineering best practices within medical device companies to facilitate the development of best-in-class medical devices. We are passionate about designing usable devices that are safe and effective. In our third year of business we are proudly continuing and expanding upon this mission! Here is a review of the progress that we have made in the past 3 years and a…

Read More

Human Factors Guidance from MHRA in the UK (2017) vs. 2016 FDA Guidance for Human Factors

Human Factors Guidance from MHRA in the UK (2017) vs. 2016 FDA Guidance for Human Factors

In September 2017, the MHRA issued a human factors guidance titled, "Human Factors and Usability Engineering-Guidance for Medical Devices Including Drug-device Combination Products." This guidance is intended for manufacturers of all device classes and developers of medical devices and drug-device combination products to be marketed in the UK and notified bodies responsible for assuring the…

Read More

CleanCision™ Wound Retraction and Protection System receives FDA Clearance!

CleanCision™ .jpg

UserWise is proud to announce that Prescient Surgical’s CleanCision™ Wound Retraction and Protection System has received FDA 510(k) clearance! UserWise worked closely with Prescient Surgical in conducting Human Factors testing to minimize potential use errors associated with the use of CleanCision™. Learn more about CleanCision™ here

Experts Weigh In: Common Pitfalls to Avoid in Usability Testing

Experts Weigh In: Common Pitfalls to Avoid in Usability Testing

This is the second installment in the series of posts summarizing the Panel Discussion on Usability Testing and the Human Factors product submission process, which included UserWise's CEO, Shannon Clark. In this post, we address the question:

What are pitfalls to avoid when conducting usability testing for a medical device?

Numerous considerations for conducting usability validation testing were named by both the panel and the audience, the most important pitfalls to avoid include...

Read More

Experts Weigh In: Consider Human Factors and Usability Early in Development for Success

Experts Weigh In: Consider Human Factors and Usability Early in Development for Success

UserWise’s Shannon Clark recently participated in an expert panel discussion hosted by the San Francisco Bay Area Biomedical Engineering Society focusing on important questions that companies encounter when trying to apply Human Factors and Usability for Medical Devices. A variety of questions, originating from the audience and from the experts own experience, were deliberated and answered throughout the night. The common theme that emerged from this panel was that human factors is now being recognized as an essential part of the medical device development process...

Read More

Join Shannon at the 2017 PFS & Injectables Summit

Shannon will be leading a pre-conference workshop at the next PFS & Injectables Summit in San Diego. On Tuesday, September 26, Shannon will be leading Workshop B on Use-Related Risk Management - Develop a Safe & Usable Medical Device. For more information regarding the PFS & Injectables Summit, visit the event page at http://pfs-injectables.com/ and registration is 20% off for being in Shannon's network.

PFS&Injectables Discount

Shannon Clark's latest Article on Human Factors and Usability Testing

Human Factors Engineering, an important facet of product development focused on minimizing or eliminating human error through the design of a medical product, is now becoming one of the most critical stages in the design process for medical devices. Shannon Clark, CEO of UserWise, has written an in-depth article on Human Factors and Usability Engineering for Medical Devices that has been...

Read More

Informing the Next Generation of Engineers

Shannon Clark’s recent talk at Santa Clara University informed prospective engineers on the importance of human factors and usability testing. Professor Gerardo Noriega’s classroom included the next generation of Santa Clara University bioengineers, as well as a handful of local startups. The audience was lead through how early implementation of human factors in the design process can reduce potential risk and cost through the product’s lifecycle.

Out-of-the-Box Medical Device Safety

Executive Summary: Out-of-the-box experience is an important consideration in medical device design that not only impacts the user’s impression of the product, but can also have critical safety implications related to IEC 62366-1. This article discusses the basic safety questions to contemplate in a use-related risk analysis pertaining to the out-of-the-box experience, and focuses on how the most critical safety risks can be reduced through human factors engineering by conducting usability studies related to the out-of-the-box experience.

Read the full paper here

Cognitive Bias in Usability Testing

Executive Summary: Cognitive bias is the tendency to subconsciously change ones actions or thought process based on someone else’s comments or behavior. It is important to consider cognitive bias when performing a usability study because it can significantly alter or impair the validity of the results. While cognitive bias cannot always be entirely eliminated, identifying key cognitive biases to which usability study results are particularly susceptible is the first step to mitigating them. Once experimenters are alert to these subtle traps, they can consider approaches that sidestep the biases and greatly improve the accuracy and overall effectiveness of a usability study.

Read the full paper here

Shockwave Medical Announces FDA Clearance Of The Company's Lithoplasty System, The First And Only Technology To Use Sound Waves To Treat Calcified Peripheral Artery Disease

UserWise assists clients in following the FDA-prescribed Human Factors process in its entirety. Once the product is ready for FDA submission, we compile a Human Factors Submission Package that meets FDA expectations to the letter.  Our goal is always to have zero questions from the FDA about Human Factors, which signifies an expedient review cycle.

Shockwave Medical is a great example of one of our very successful 510(k)s!

Shockwave Medical Announces FDA Clearance Of The Company's Lithoplasty System, The First And Only Technology To Use Sound Waves To Treat Calcified Peripheral Artery Disease

Read the full paper here

Training Decay - Is an Hour Long Enough?

Training Decay Selection for Usability Validation

Executive Summary

When conducting usability validation testing, representative users must use the device in the expected conditions of use in the field. There is usually a period of time—days or weeks—between the point in time a user is trained, and the moment they use the device for the first time. For this reason, the FDA acknowledges the need for “training decay” as part of usability validation testing, but manufacturers face challenges simulating real-time decays. In response to challenges associated with lags of days or weeks between training and usability validation testing, medical device manufacturers typically simulate shortened training decay periods. This paper discusses the theory behind the shapes of various training decay curves and the variables that drive differences between training decay curves.  The author proposes to use a task-based approach for defining training decay curves in usability validation studies and sets out generalized training decay curves at a high level. Future research could reveal detailed and generalizable training decay curves. Identifying generalizable training decay curves could standardize the usability testing required for medical devices, and ultimately improve use error identification while avoiding an undue toll on manufacturer resources.

Read the full paper here