Data-Driven Design

Designers usually get to know their users in order to design for them. This can be done for example by interviews, observations and context mapping. In all of these design methods, designers are trying to understand the user in their context and by their means. However, with data-driven design, the data that all users create together will become the basis for the designer.

Data-Driven Health Care. Image retrieved from MIT.

The amount of information in the world is growing with a rate of 60% each year (Donhorst, & Anfara (2010). But that does not mean that this information is directly available for the decision makers. An example of these are the translators of the IKNL (2018). This organisation is analysing most of the cancer patients in the Netherlands that are visiting a doctor in a hospital and provide data to hospitals and communicate via their website. Via these websites, patients are able to see for example what the quality of life is after a specific kind of treatment. When this data is made available for the patients, it leads to better share decision making, because they are better informed (Raghupathi, Raghupathi, 2014).

Although probabilities derived from large batches of data are often more reliable than human reasoning, patients will always tend to trust the human more. Therefore, in data-driven design in the Healthcare application, the balance should be found between data and a doctor as a middleman. Moreover, an average doctor has a short amount of time with their patient and they also need to use this time to process data. In order to collect more data, the most important design challenge is to find a way to collect more without interfering with the doctor-patient time. Additionally, Grossglauser & Saner state that the use of data will also contribute to detect health issues quicker and will automate processes where medical staff is needed less. (Grossglauser & Saner, 2014).

References and Interesting Links:

  • Donhost, M. J., & Anfara, V. A. (2010). Data-Driven Decision Making. Middle School Journal, 42(2), 56–63. https://doi.org/10.1080/00940771.2010.11461758
  • Grossglauser, M., & Saner, H. (2014). Data-driven healthcare: from patterns to actions. European journal of preventive cardiology, 21(2_suppl), 14-17.
  • IKNL. (2018). IKNL – Integraal Kankercentrum Nederland.
  • Raghupathi, W., & Raghupathi, V. (2014). Big data analytics in healthcare: promise and potential. Health information science and systems, 2(1), 3.

Topic Contributors: Laura Heikamp and Milou Mertens

Design for Autonomous Ageing

The aging population is growing in numbers and proportion in every country in the world. As of 2017, the amount of people over the age of 60 was 13% (25% in Europe), and the amount of people over the age of 80 was 1.85% (Ageing, UN).

Woman holding a Philips phone. Retrieved from Pixabay.

Both groups are increasing rapidly, the population over 60 will duplicate by 2050, while the population over 80 will triplicate. It means huge challenges on the horizon for key pillars of our society, such as markets, labour, services, housing, etc., in which design can play a big role in order to overcome them.

Designing for autonomous ageing is defined as “The freedom to determine one’s own actions”. Translated to the care context, the senior person is considered autonomous, and in charge (Tischa, J. M. et. al). Design choices are very important to achieve a safe and independent lifestyle for senior citizens. The Aging with Dignity New York City report highlights many opportunities, such as building additional bus shelters and benches to better serve the older population. But, what are the key points in order to create better products for the aging population?

Firstly, it is important to understand that ageing is a multidimensional process of change that conditions the physical, mental and social aspects of a person. It is a functional decline that affects mobility, sight and hearing, with the increase of multimorbidity, the co-occurrence of 2 or more chronic medical conditions in one person (Tischa, J. M. et. al). All that is further complicated by the  higher interpersonal variability.

Secondly, it is necessary to identify common causes that affect elderly in their daily interaction with products, such as burns or falls at home. In addition, it also helps to group them by their level of autonomy. Is the person dependent on someone else or is he or she completely independent? Does he or she live alone or with the partner?

Finally, once the target limitations and group are defined, human-centered design methods must be implemented, always including the stakeholders, which in this case usually are: doctors, nurses, caregivers, family members, etc. This design methodologies, together with inclusive design, help to navigate a difficult, multifaceted and ill-defined problem.

At the faculty of Industrial Design of TU Delft, research and multiple projects with the aim of improving the autonomy and quality of life of the older population are being elaborated. More information in the Design Innovation for Ageing.

References and Interesting Links:

  • Ageing, UN. Retrieved from http://www.un.org/en/sections/issues-depth/ageing/
  • Aging with Dignity: A Blueprint for Serving NYC’s Growing Senior Population. (n.d.). Retrieved from https://comptroller.nyc.gov/reports/aging-with-dignity-a-blueprint-for-serving-nycs-growing-senior-population/
  • Tischa J. M. Van Der Cammen, Albayrak, A., Voûte, E., & Molenbroek, J. F. (2016, 11). New horizons in design for autonomous ageing. Age and Ageing. doi:10.1093/ageing/afw181

Topic Contributors: Kevin Mamaqi Kapllani

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Risk communication

In the domain of healthcare, risk communication is about presenting benefits and harms of different options, in situations in which people need information to make decisions.

Risk communication serves to inform the patient (and family), so that they understand the potential risks, supports them in making informed decisions regarding threats to health and safety, and encourages them to participate in minimising or preventing these risks (RISC Amsterdam, n.d.).

There are different complexities surrounding risk communication. Dutch legislation requires doctors to always inform patients about potential benefits and harms (WGBO, 2017). However, there are exceptions, such as very acute situations and situations in which there is strong evidence that an option has many benefits and no (or hardly any) harms. In the case of the latter, the doctor can direct and guide the patient towards the option he concludes to be best (paternalistic approach). However, in the case of uncertainty, the doctor will facilitate the patient’s decision by providing him with transparent information. The patient can then make a decision without further help of professionals (informed decision making), or with active guidance (shared decision making).

There is a plethora of tools that help communicate risks, such as online quiz De Risicotest (PreventieConsult, n.d.), infographicsand leaflets. Risk communication tools can convey information in different ways: via numbers (tables, statistics), visual display (pie charts, graphs, or visuals as in Figure 1), or verbal terms (using terms as ‘high risk’, ‘small chance’).

Figure 1: visual displaying benefits and risks of medicines for treating urgency incontinence in women (AHRQ, 2014).
Figure 1: visual displaying benefits and risks of medicines for treating urgency incontinence in women (AHRQ, 2014).

These risk communication strategies bring forth different difficulties for people to understand the information. The three main issues are the involvement of:

  • Numerical probability information, which many people find difficult to understand.
  • Abstract epidemiological information, which often lacks an intuitive meaning.
  • Unbalanced information, which is the overemphasis of benefits and the underemphasis of risks.

Designers can contribute greatly by bridging the gap between doctor and patient. Risk communication strategies should be created in which the designers’ skill is required to, for example, craft a user journey to determine when and how risks can be communicated in an understandable way. Empathy on the designer’s part is needed to understand the user’s context and determine whether informed or shared decision making should be supported. Naturally, knowledge regarding Medisign is necessary for the designer to be able to make these decisions.

References and Interesting Links:

  • PreventieConsult. (n.d.). Retrieved May 1, 2018, from https://www.testuwrisico.nl/
  • RISC Amsterdam. (n.d.). Retrieved May 1, 2018, from https://www.riscamsterdam.com/en/
  • The SHARE Approach-Communicating Numbers to Your Patients: A Reference Guide for Health Care Providers. (2014, July 25). Retrieved May 1, 2018, from https://www.ahrq.gov/professionals/education/curriculum-tools/shareddecisionmaking/tools/tool-5/index.html
  • Wet op de geneeskundige behandelingsovereenkomst (WGBO). (2017, October 20). Retrieved May 1, 2018, from https://www.dwangindezorg.nl/rechten/wetten/wgbo

Interesting Links:

  • Damman OC, Bogaerts NM, van den Haak MJ, Timmermans DR. How lay people understand and make sense of personalized disease risk information. Health Expect 2017; doi: 10.1111/hex.12538.
  • Damman OC, Bogaerts NMM, Van Dongen D, Timmermans DRM. Barriers in using cardiometabolic risk information among consumers with low health literacy. British Journal of
  • Health Psychology 2016; 21(1):135-56.
  • Galesic M, Garcia-Retamero R. Statistical numeracy for health: A cross-cultural  comparison with probabilistic national samples. Arch Intern Med 2010; 170:462-468.
  • Hofman, Del Mar; Patients’ expectations of the benefits and harms of treatments, screening and tests:  a systematic review. JAMA Intern Med 2015;175(2):274-286

Topic Contributors: Michael Soenthorn Speek

Design for End of Life

Design for the end of life asks for an integrative approach, in which (relatives of) the terminally ill patient, religious experts, medical staff, designers and philosophers all play an important role. Finally, all involved only aim to provide their patient, family member or friend with “What really matters at the end of life” (B.J. Miller, 2015).

Heartbead graduation project. Image retrieved from TU Delft.

Design has the capability to enhance the quality of life and improve health care from a different perspective. It is always the intention of medical professionals to cure diseases, but in some cases this is impossible. Thereby it also becomes increasingly important to design for the end of life and support people towards a worthy end. At the TU Delft the efforts in this topic are focussed on palliative and hospice care. Palliative care specializes in maintaining the quality of life for patients with life-limiting diseases. Hospice care guides patients towards the end of their life.

Palliative and hospice care consist of four different aspects. The physical aspect is the foundation of the care; to ensure that the patient is not suffering, feels as comfortable as possible and has no pain. The emotional aspect deals with anxiety, depressions, anger and other emotions. The social aspect addresses the people around the patient and the evolvement of the patient’s social life. The spiritual aspects deals with questions like “What did my life mean to me?” and “What is the meaning of life?”.

How can design be of value in palliative and hospice care? An obvious answer is by improving the physical comfort of patients. Design of the beds, rooms and the products they use can have a tremendous impact on their emotional well-being. Two concepts which illustrates that a product could improve the wellbeing of the patient are the “Mobile care seat for elderly in the last stage of their lives” (D. Unsal, 2012) and the “Long-stay support for immobile people in nursing homes” (Y.F. Chow, 2011).

The emotional design aspect plays an important role in providing direct solutions for the mental state of the patient. Digital companions like for example a robot dog can fulfill a social function and solve feelings of loneliness or isolation (J. Howard, 2017).  However, emotional design can also aim to indirectly address the patient’s wellbeing by helping to provide good care, so patients and relatives can feel trusted by the caregiver. An example is Pallas, this product helps caregivers to deal with the issues and challenges of their demanding job (S.W. Klok, 2014). Thereby design can play a role in optimizing (administrative) processes in palliative care, helping nurses and doctors to provide more personalised care.

Lastly, an important aspect in end of life is spirituality. By developing tools and products, design can play a role in facilitating conversations about spirituality; helping patients to find peace of mind. Providing a (neutral) place for prayer and respect traditions such as specific food or handling of a body after passing away, is also of great importance. Design can help healthcare professionals to take into account different religions and their beliefs in matters of terminal care. For example, before making a final decision for a muslim patient it might be important to not only consult the relatives, but to also include spiritual counsel by an ethicist or Islamic scholar.

Conversations about end-of-life are a sensitive topic that touches upon the core of each culture. In recent years, especially in the Western world the discussion about the topic is opening up. As we approach this sensitive topic we must be careful not to step on each others toes. It is important to include people from all different disciplines in this discussion, to help think beyond healthcare or design. Design for the end of life asks for an integrative approach, in which (relatives of) the terminally ill patient, religious experts, medical staff, designers and philosophers all play an important role. Finally, all involved only aim to provide their patient, family member or friend with “What really matters at the end of life” (B.J. Miller, 2015).

References and Interesting Links:

  • Klok, S. W. (2015). TU Delft medisign booklet 2013 – 2015 (p. 42). Retrieved from https://www.medisigntudelft.nl/wp-content/uploads/2017/01/Medisign-booklet-2013-2015.compressed.pdf.
  • Chow, Y., F., (2012). TU Delft medisign booklet 2010 – 2012 (p. 136). Retrieved from https://medisigntudelft.nl/public_html/wp-content/uploads/2013/12/Medisign%20Graduations.pdf.
  • D. Unsal,  (2012). TU Delft medisign booklet 2010 – 2012 (p. 137). Retrieved from https://medisigntudelft.nl/public_html/wp-content/uploads/2013/12/Medisign%20Graduations.pdf.
  • Howard, J. (2017, November 01). Can robot pets comfort like the real thing?. Retrieved from http://edition.cnn.com/2016/10/03/health/robot-pets-loneliness/index.html
  • Miller, B. J. (2015). What really matters at the end of life. Retrieved from https://www.ted.com/talks/bj_miller_what_really_matters_at_the_end_of_life

Topic Contributors: Lana Klok, Myrthe ten Bosch, Stijn Bakker

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Design for Psychiatry

Social/cultural aspects present a design opportunity for products and services to help raise awareness and empathy towards mental health sufferers, as well as helping patients to build the confidence and skills required to become independent members of society.

Design for Psychiatry. Image retrieved from ID Studio Lab.

Health psychology studies the psychological and behavioural processes in health and mental illness in the healthcare industry. Health psychology has the biggest impact across the human lifespan in the healthcare industry. A health psychologist sees an illness as not only a result of biological processes but a multitude of external factors, namely psychological (thoughts and beliefs), behavioural (habits) and social processes (socioeconomic status and ethnicity). This is called a biopsychosocial approach; the whole person is treated and not just the physical symptoms (Ogden, 2012). Jeroen Deenik (J. Deenik, personal communication, 23 October 2017), found that this approach is also needed in psychiatric long-term care hospitals. He proved that change of lifestyle, especially behaviour, was beneficial in the treatment of these patients.

First, what is psychiatry? Psychiatry studies and treats mental disorders, which often has roots in emotional imbalances and abnormal behaviours (Merriam-Webster, 2017). Biology plays a large role not only as a trigger but also in the complications associated with living with a mental disorder. In the most extreme cases of psychotic disorders, movement disorders are the largest challenge facing this population. Because of the medication patients are dying 20-30 years earlier due to cardiovascular disease, metabolic syndrome and diabetes, all attributed to avoidable risk factors such as obesity, high blood pressure, bad cholesterol levels and inactivity.

The social/cultural aspects of mental health care also influence many aspects of mental illness including how patients express their symptoms, their coping methods, family and community supports, what types of help they seek and willingness to seek treatment altogether (The Influence of Culture and Society on Mental Health, 2001). Likewise, the cultures of the clinician and the service system influence diagnosis, treatment, and service delivery. For example, pill-taking for mental health issues is normalized in some cultures, while in others it is seen as a sign of weakness. These cultural/societal differences need to be considered when designing for the mental health care industry.

Deenik (2017), explains that the culture within Dutch long-term care facilities used to be about making it as comfortable as possible for these patients. Before no regimes where in place to support healthy living within the facilities. Furthermore, the social stigma associated with mental health is still a major problem. Mental health patients consistently identify stigma, discrimination and social exclusion as major barriers to their health, well-being and quality of life (The National Mental Health Stigma Reduction Partnership, July 2013). Deenik (2017), has very effectively implemented behavioural and cultural/social changes within a psychiatric hospital. Overall patients improved on their physical activity, metabolic health, quality of life and psychosocial functioning. Besides, it reduced the overall use of medication.

Current interventions did not involve design, therefore there lies a great opportunity for innovation and improvement in designing for psychiatry. Designing interventions to address the health risks is complex as there are significant interrelations between the mental illness, the medication, interpersonal and intrapersonal relationships. Opportunities exist in motivational programs for staff and patients, innovative technology to enhance the environment or patient care, as well as designing systems for continuous care (Deenik, 2017). Social/cultural aspects present a design opportunity for products and services to help raise awareness and empathy towards mental health sufferers, as well as helping patients to build the confidence and skills required to become independent members of society. Examples can be taken from patient empowerment design projects on, for instance, behaviour tracking and goal setting apps, interventions in communication between healthcare professionals and professions etc. Most likely, however, a more tailored design is needed for the psychiatric hospital context.

References and Interesting Links:

  • J. Deenik (23 October 2017). The elephant in the room improving lifestyle in psychiatry. Personal communication.
  • Mental Health: Culture, Race, and Ethnicity: A Supplement to Mental Health: A Report of the Surgeon General. (2001). The Influence of Culture and Society on Mental Health. Retrieved from: https://www.ncbi.nlm.nih.gov/books/NBK44249/
  • Merriam-Webster. (2017). Definition of Psychiatry. Retrieved from: https://www.merriam-webster.com/dictionary/psychiatry
  • The National Mental Health Stigma Reduction Partnership. (2013). The effect of stigma. Retrieved from: http://www.seechange.ie/the-effect-of-stigma/
  • Ogden, J. (2012). Health Psychology: A Textbook (5th ed.). Maidenhead, UK: Open University Press. Chapter 1 introduction to health psychology. Retrieved from: https://books.google.nl/books?hl=nl&lr=&id=RzVFBgAAQBAJ&oi=fnd&pg=PR1&dq=Ogden,+J.+(2012).+Health+Psychology:+A+Textbook+(5th+ed.).+Maidenhead,+UK:+Open+University+Press.&ots=JzFrXiUkMw&sig=dAvJqW4dFIeG9nJEPqa_XzwYlcc#v=onepage&q&f=false

Topic Contributors: Emily Brebner, Emma Erkelens, Oliver Ravilious

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3D/4D Imaging for Healthcare

3D imaging software has made it possible to take multiplf images and stack them into a digital model. Using the parameters of computed tomography (CT), magnetic resonance imaging (MRI) or positron emission tomography (PET) scans (water density / traces of radiation) designers can isolate organs, structures and even tumors. The result is a CAD model which can be used by professionals for personalized designs and to take measurements of the body.

3D Handscanner. Image retrieved from TU Delft.

Medical imaging is used to facilitate visualization of diseases, organs and other parts of the human (or animal) body. Traditionally, scans consist in sets of 2 dimensional planes that help physicians understand whatever is inside the body. It is not possible to obtain depth in a 2-dimensional image. Therefore, a set of pictures are made following a straight line (axis). Scans can use sound frequencies (Ultrasound), radiation (CT) or magnetism (MRI) and depending on that visualize bone structures, tissues, organs, tumors, etc.

3D imaging software has made it possible to take this group of images and stack them into a digital model. Using the parameters of CT, MRI or PET scans (water density / traces of radiation) designers can isolate organs, structures and even tumors. The result is a CAD model which can be used by professionals for personalized designs and to take measurements of the body.

In addition to 3D scans, some devices can stack together 3D images taken in a short period of time. The outcome is a digital animation where the viewer can see how the scanned object changes over a certain period of time. Examples of the use of these so called 4D scans in a medical context are 4D ultrasounds during a pregnancy check-up or the visualization of specific organ functions (e.g. blood oxygenation and pump).

This is a major improvement compared to the plane image scanning and it generates new areas of opportunities where the medical and design community can work together to help patients in a better way.

  • Having 3D and 4D models can be a tool for medical students to get meaningful training before a real practice. This is especially interesting when paired up with virtual reality environments and interactions. It also reduces the need of bodies for dissection.
  • Scans can be 3D printed in order to prepare doctors, before a long invasive surgery.
  • Designers can work with specific measurements of a specific user / set of users (e.g. medical applications for newborn babies).
  • 3D models of people involved with accidents or deformations can be used to print suitable prosthetics for the healing process. In addition to this, the research of new materials (e.g. biomaterials) is used to print functional organs for patients in need of a transplant.
  • Insitum scans with the actual patients has been used as a first step to print tissue over wounds and regenerate skin.
  • Create data sets and libraries for further research and development in the fields of medicine and design. With the democratization of 3D printing, developing countries and enthusiasts can get involved with the design of products like casts and prosthetics.

These 3D processes that visualize the inside of the human body are a considerable upgrade from the flat 2-dimensional images and help diminish possible interference since there is less need of interpretation from the viewer. And of course, are better than the old procedures depicted in Vermeer’s “anatomy lesson” where physicians opened bodies to understand what was beneath the skin. But most importantly, the data generated can contribute to development of more personalized products and medical solutions.

References and Interesting Links:

  • Atala, A. (n.d.). Printing a human kidney. Retrieved from https://www.ted.com/talks/anthony_atala_printing_a_human_kidney
  • E. (n.d.). – Epibone. Retrieved from http://www.epibone.com/
  • Galli, N. (n.d.). The NIH/NIGMS Center for Integrative Biomedical Computing. Retrieved from http://www.sci.utah.edu/cibc-software/seg3d.html
  • Molenbroek, J., Bruin, R. D., & Goto, L. (February 2016). Past het niet? Print het dan!: Kinderbeademingsmaskers dankzij 3D-technologie. Retrieved from https://repository.tudelft.nl/islandora/object/uuid:8e468c32-f4f8-4de7-b3ac-f404ccb2a503?collection=research

Topic Contributors: Dennis Sarwin, Guillermo Meza, Tom van den Bogaard

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Redesigning Teamwork in Healthcare

Combining the design way of thinking with the designers’ ability to come up with new products and solutions, designers can start to create tools and products to facilitate communication in interdisciplinary health care meetings.

VUmc Consultations. Image retrieved from TU Delft

The medical field is traditional, consisting of many different specialists, each with their own expertise. Nice and tidy, each his own box. But unfortunately, diseases do not really work that way.

As we are increasingly recognising that diseases tie into different parts of the body, it becomes more important for medical professionals to work together and to look at the patient as a whole, instead of separate parts. No person can ever become experts in all the fields, but we can try to bridge the gap between different expertises. This is where design can play a crucial role.

At the core, design is about understanding a problem from as many different perspectives as possible. Designers try to understand the viewpoints of all the stakeholders, without replacing them by becoming experts themselves. In this way designers try to get an understanding of the problem and the solution, a process known as ‘framing.’ As such designers are really good at facilitating communication; picking up on the essentials and translating it to a language everybody can understand.

Combining this design way of thinking with the designers’ ability to come up with new products and solutions, designers can start to create tools and products to facilitate communication in interdisciplinary health care meetings. Not only can this increased understanding improve the experience of the patient and increase the chances of finding a successful cure for the disease, it can also revolutionize the medical field. By breaking barriers design has the potential to shift the medical field into the 21st century, combining fields that could lead to new insights and a better understanding of the functioning of the human body.

Fortunately, design is getting more and more attention in the medical field. A recent example of design for communication in the medical field is the graduation project of Jesse Beem. He has gotten the opportunity to design for improved communication during multidisciplinary team meetings at the VUmc. He designed an environment to improve discussion among specialists and a tool that brings communication differences into line with visualisation. His design enabled specialists to discuss more efficiently about the patients before deciding on a patient’s diagnosis and treatment. Jesse showed the VUmc how design can facilitate communication and he is currently applying his design to all the meeting rooms in the hospital as the first employed designer at the VUmc.

As said, the design Jesse developed for his graduation, was a tool to make medical professionals communicate better. Compared to a conventional conference/discussion room, his new design was focussed on a centralised conversation. As shown in Figure 1, his new design is similar to the setup of an orchestra. As Jesse said: “..because a consultation between different expertises should sound like a piece of well coordinated music.” To facilitate this, he did not only design the round conference room. He also developed an application that syncs across devices with pictures of the patient (for example a CT-scan) and all medical experts can indicate their thoughts on the patient’s medical situation.
For all viewers in a further row, big screens and a sound installation are installed in the front of the room so that everybody knows who is talking about what. In the end what is most important, is that all professions have discussed effectively and efficiently, making the diagnosed situation and treatment more accurate and less prone to failure.

Jesse’s new design for medical consultation meetings
Figure 1. Jesse’s new design for medical consultation meetings

Although it is good to see the increasing role of design in some parts of the medical field, it is still too little to break the barriers and bring medical care into a new era.

Especially in this field, where a small change could have a huge impact, it is important to make a difference with design. We as designers should push that change.

References and Interesting Links:

  • Doss, H. (2014, May 23). Design Thinking In Healthcare: One Step At A Time. Retrieved from https://www.forbes.com/sites/henrydoss/2014/05/23/design-thinking-in-healthcare-one-step-at-a-time/
  • Leggat, S. G. (2007). Effective healthcare teams require effective team members: Defining teamwork competencies. Retrieved from https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1800844/
  • Medical Graduation assignment of Jesse Beem (2016): https://www.tudelft.nl/io/onderzoek/discover-design/medisch-overleg-zou-als-een-symfonieorkest-moeten-zijn/

Topic Contributors: Stijn Bakker, Zoë Dankfort, Roel Redert, Chenyi Shao

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Human Factors in Medical Device Design

Human factors Engineering (HFE) use behavioural scientific methods to identify possible design flaws of human device interaction, due to the (sometimes) unpredictability of the human behaviour. It is difficult to rely on logic or intuition alone, with the design of man/machine interactions and human factors provides the means of research and analysis to discover valuable solutions.

Hand proportions. Image retrieved from Joshua Nava Arts

HFE is the science of solving issues regarding the integration of humans into machine systems. It hereby focuses on the interactions between people and devices in terms of vision, touch, hearing and cognition; how does the users prepare to interact with the device? (e.g. unpacking and set-up); and how does one use the device, or perform maintenance? (e.g. cleaning and making repairs). HFE use behavioural scientific methods to identify possible design flaws of human device interaction, due to the (sometimes) unpredictability of the human behaviour. It is difficult to rely on logic or intuition alone, with the design of man/machine interactions and human factors provides the means of research and analysis to discover valuable solutions.

The growing complexity of products can lead to interaction and usability problems. Advanced technology has created entirely new problems related to the human operators and the way humans can be integrated into systems. These problems can only be solved by addressing the whole context and therefore HFE is necessary to prevent harmful use errors, especially within the medical field. For medical devices, the most important goal of the human factors/usability engineering process is to minimize use-related hazards and risks. Once it has been confirmed that HFE efforts were successful in this endeavour, a device can be implemented in the commercial market and be used safely and effectively. Specific beneficial aspects of applying human factors to these medical devices include:

  • Easier-to-read controls and displays,
  • Better user understanding of the device’s status and operation,
  • More effective alarm signals,
  • Reduced need for user training and retraining,
  • Reduced risk of use error,
  • Reduced risk of adverse events.

HFE applies to a wide range of medical devices. This includes combination products, like auto-injectors or nebulizers; therapeutic and diagnostic devices, such as insulin pumps and ultrasound scanner; critical care devices such as defibrillators; and lab instruments such as blood analysers. All these vary in complexity and risk, which can lead to interaction problems that influence the usability of the product and its safety.

It is important to state that HFE does not neglect product appeal. An appealing product has been proven to increases user satisfaction, engagement and usability. Appealing design can enhance motivation to use the design and comfort especially for children. Therefore human factors consider the appeal of the product as important, although this may never compromise the safety and effectiveness.

The activities that involve HFE include both research and analyses. On the research side, specialists perform field observations, which consists on examining the devices’ operation in the actual context wherein they are used. They carry out interviews with medical professionals, patients, or any other stakeholders; and surveys. The other aspect of HFE includes anthropometrics analysis, which can ensure the correct ergonomics of the product to improve its usability and efficiency. Through various analysis techniques adverse events and hazards related to user risks are identified.

Another main activity of HFE is evaluation and usability tests. Formative testing is carried out during the development cycle of a product. It consists of getting as much feedback as possible from the user in order to improve the device and to compare it to other design alternatives. Summative testing is conducted for the final validation of the product, which approve its performance (safety and effectiveness) and is necessary for FDA approval of new medical products.

References and Interesting Links:

Topic Contributors: Amy Collins, Núria Vilarasau Creus, Jan Okkerse

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Redesigning Resuscitation

As an Industrial Designer, you can contribute in multiple ways to Resuscitation Redesign. Simon Tiemersma of the Gamelab TU delft and Olivier Hokke developed the resuscitation game Held, which aims to make resuscitation training more fun and accessible for a larger audience. The game won the second prize in the 5th International Educational Games Competition in 2017 (3). Another example is the Medisign graduation project from Alec Momont, who designed an ambulance drone which can quickly carry an AED, CPR aids and medicine to those in need of care (4). The design significantly increases the survivability rate and improves the communication between 112 operators and the caregivers (via a two-way, video channel).

Usage of VR and AR for Medical Training. Image retrieved from RealVision.

About 195 people suffer from a cardiac arrest in the Netherlands every day (Hartstichting, 2017). Although there are life-saving technologies (Automated External Defibrillator or AED) and techniques (Cardiopulmonary Resuscitation or CPR) available, the survival rate is still approximately 20 percent. The problem is that almost three-quarters of the Dutch population does not know how to act when a person suffers from a cardiac arrest (Avrotros, 2017). The low awareness of how to provide emergency medical help is worrisome. When CPR (i.e. chest compressions and rescue breathing) is performed within 6 minutes, then the chance of survival increases drastically. It is essential to educate as many people as possible in performing CPR and using for example an AED.

Nonetheless, there are many barriers that prevent people from participating in resuscitation training. According to literature, barriers to CPR training are related to a lack of opportunity and the hassle to obtain practical information (where to go and whom to contact). In most cases, people are not asked or required to participate in CPR training. It is also possible that people have never thought of seeking CPR training or paid any attention to it. The challenge is to introduce new ways to educate resuscitation in order to make it more attractive for people. One could think of tackling these barriers for following CPR training, improving the content or boost people’s confidence to save a life after training.

There are currently numerous developments in both research and business communities that work towards such solutions. For instance, the start-up company Dual Good Health is planning to offer resuscitation training with virtual reality (1). In combination with a CPR mannequin (for the real-time tracking of depth and speed of chest compressions), various live scenarios can realistically simulated whereby participants receive immediate, visual feedback. This enhances the overall learning experience, reduces costs and increases engagement in resuscitation training. Besides virtual reality, there are interactive films on the internet which get the viewer to make choices in emergency scenarios. The critically acclaimed film Lifesaver by Martin Percy has been a big success and greatly helped to popularize CPR training (2). 

As an Industrial Designer, you can contribute in multiple ways. Simon Tiemersma of the Gamelab TU delft and Olivier Hokke developed the resuscitation game Held, which aims to make resuscitation training more fun and accessible for a larger audience. The game won the second prize in the 5th International Educational Games Competition in 2017 (3). Another example is the Medisign graduation project from Alec Momont, who designed an ambulance drone which can quickly carry an AED, CPR aids and medicine to those in need of care (4). The design significantly increases the survivability rate and improves the communication between 112 operators and the caregivers (via a two-way, video channel).

TU Delft motivates design students to work on societal challenges in the field of healthcare. Elective courses within the new Medisign specialisation discuss and work on several design cases. With regard to redesigning resuscitation, students in the course Capita Selecta (2017/18 Q1) were challenged to design innovative solutions to improve the resuscitation training of the Dutch company Livis.

References and Interesting Links:

Interesting links:

  1. Virtual reality for resuscitation training:
 https://www.youtube.com/watch?v=aEiZWq6JvGc&feature=youtu.be
  2. The interactive film Lifesaver by Martin Percy:
 https://life-saver.org.uk/
  3. Resuscitation game Held: 
https://www.tudelft.nl/en/2017/tbm/resuscitation-game-held-wins-second-prize-in-5th-international-educational-games-competition/
  4. The ambulance drone project:
 https://www.tudelft.nl/en/ide/research/research-labs/applied-labs/ambulance-drone/

References:

  • Avrotros. (2017). Nederlanders weten onvoldoende van reanimatie. Retrieved from https://radar.avrotros.nl/nieuws/detail/nederlanders-weten-onvoldoende-van-reanimatie/
  • Hartstichting. (2017). Feiten en cijfers hart en vaatziekten. Retrieved from https://www.hartstichting.nl/hart-en-vaatziekten/feiten-en-cijfers-hart-en-vaatziekten

Topic Contributors: Ward Hendrix, 
Larissa Hesselink, Oliver Aldous, Max Benning-Batstone

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