MICHAEL ENGLER Senior Consultant | Managing Partner KAY BEHRENBRUCH Senior Consultant | Managing Partner STEFAN GREINER Junior Consultant | UX Researcher DR. STEFAN KRATZENSTEIN Senior Consultant | UX Laboratories THOMAS MAMERO Senior Consultant | UX Designer DAGNY TIEDEMANN Junior Consultant | UX Researcher GESA RUGE Junior Consultant | UX Researcher »We support the development
of safe and secure, attractive
and easy to use products.«
Our services:
Usability and Human Factors Engineering
  • Usability Evaluations
  • Formative Usability Testing
  • Summative Usability Testing
  • PCA Analysis
  • Heurstic Evaluation
  • Cognitive Walkthrough
  • User Recruitment
  • User Research
  • Contextual Inquiry
  • Field observation
  • Interviewing
  • Focus group
  • Desk research
  • Use Specification
  • Use Scenarios & Hazard-related Use Scenarios
  • Use Error Analysis
  • Use-related Risk Analysis
  • User Interfaces Specification
  • User Interface Design
  • Usability Engineering Process Consulting
  • Integration in ALM-tooling
Requirements engineering
  • User Needs & User Requirements Analysis
  • Context & Scope Definition
  • Use Case Analysis
  • Model-based Requirements Documentation
  • Systems or Product Requirements Analysis
  • Software Requirements Analysis
  • Hardware Requirements Analysis
  • Design Input Process Definition
  • Methodology Definition
  • ALM-Tool roll-out


Ergonomics & Anthropometry
  • Product evaluation
  • World-wide User Representation
  • Motion Lab
  • Design consulting

Slide »Merging our competences mirrors the combination
of software with seizes, shapes and physical functions
realized in the internet of things.«
Slide »Fulfilling regulations for software and usability
is required and - if done intelligently - ensures safe,
secure, attractive and usable medical devices.«
Slide »We strive for solutions that genuinely surprise the user
by not merely asking the users what they want, but by
profoundly understanding the purpose of their actions.«
Kay Behrenbruch
Slide »Measured data from our labs
make results of prototype-evaluations
comparable and dependable.«
Dr. Stefan Kratzenstein »Translating these data into
substantial product improvements
is the necessary next step.«
Thomas Mamero
Our services for medical devices comply with:
  • IEC 62304:2006
  • IEC 62304:2006 Amd 1:2015
  • IEC 62366:2007
  • IEC 62366:2007 Amd 1:2013
  • IEC 62366-1:2015
  • IEC TR 62366-2:2016
  • ISO 14971:2007 / EN ISO 14971:2012
  • ISO 13485:2016 / EN ISO 13485:2012
  • AAMI TIR 45
FDA Guidances
  • General Principles of Software Validation
  • Content of Premarket Submissions for 
Software Contained in Medical Devices
  • Content of Premarket Submissions for 
Management of Cybersecurity in 
Medical Devices
  • Off-The-Shelf Software Use in Medical Devices
  • Applying Human Factors and 
Usability Engineering to Medical Devices


  • MotionLab in cooperation with Kiel University
  • Full-scale Usability Lab
  • Age and Gender
  • Profession (focus: health care professionals)
  • Personality traits that define the user acceptance of your innovations
  • Anthropometry and Biomechanics
  • Body strength
  • Transpiration and microclimate
  • Full service: Recruitment, Payment and Legal Framework

Intelligent Anthropometry and Biomechanics for Benkana Interfaces

  • We analyse our extensive world-wide databases for anthropometry and biomechanics to define the relevant physical characteristics of your user group.
  • We translate the identified relevant standard data into physical characteristics of your product.
  • We select 8-12 subjects that represent the physical characteristics of your (worldwide) user group from our Benkana-User-Pool.
  • We conduct an prototype evaluation in the MotionLab and derive substantial product improvements based on comparable and dependable data.
  • Your benefit: Be sure your product fits humans – worldwide.

The next steps


You want to learn more? Usability Engineering, Requirements, Ergonomics, Medical Device Software are our topics. Visit one of our public trainings! Should we deliver an inhouse-training at your company? Contact us and we find a way to help you!


Your team develops medical devices to the best of their knowledge and judgement? You still think that you can be more efficient? Or you have the slight feeling that not everything is as it should be? Get in touch with us and we conduct a gap-analysis e.g. using IEC 62304, FDA Guidances or Medical SPICE.


You have technically advanced and high-quality products, real innovations? Still users struggle with your products? Or is your product hard to handle or uncomfortable? Talk to us about a strategy workshop! Together with you we develop the right action plan to make your products attractive and usable.