Maynooth University Researchers Develop Cooling Insole to Prevent EB Blisters

Researchers at Maynooth University are developing a specialized shoe insole designed to prevent the painful blistering associated with epidermolysis bullosa (EB), a condition that currently forces many patients to limit even the most routine physical activity. The prototype, which actively regulates foot temperature, aims to address the heat, moisture, and abrasion that trigger the condition’s most severe symptoms, as reported by RTE.ie.

The Mechanics of Prevention

Epidermolysis bullosa, specifically the EB simplex (EBS) variant, is characterized by a missing protein responsible for binding skin layers together. For those living with the condition, the simple act of walking can cause foot temperature to rise, leading to painful, debilitating blisters. The Maynooth-developed insole functions by maintaining a constant foot temperature of 32°C. To achieve this, the device utilizes an internal cooling fluid and a separate heat exchanger located outside the shoe, which draws excess heat away from the feet.

Unlike traditional treatments that focus on managing blisters after they appear, this technology is designed to stop them from forming entirely. Dr. Linzi Ryan, the research lead at Maynooth University’s Department of Design Innovation, highlighted the often-overlooked social toll of the condition, noting that many individuals suffer in silence because their symptoms are not always visible to others.

One of the things with EBS is that it can be a hidden condition because people may not see blisters on the feet or hands. But you have people who are not able to walk to the bus with their friends because their feet blister. It has a negative impact on their quality of life, on their social circles, on their confidence. Maynooth University's Department

Addressing a Hidden Daily Struggle

The impact of EBS on daily life is significant. Debra, the national charity supporting the estimated 300 people in Ireland living with EB, reports that some patients resort to using frozen sanitary towels inside their shoes in a desperate attempt to manage sweat and heat before short walks. This practice underscores the lack of specialized, accessible solutions for those who experience the condition’s physical limitations.

Fatma Ben Yousseff, head of research at Debra, described the innovation as a potential game changer for the community. The development process was directly informed by the charity’s expert panel, ensuring the solution targets the specific, practical barriers faced by patients. For families like the Dawsons from County Meath, who recently tested the prototype, the technology represents a shift toward greater personal mobility.

The new development could be of huge benefit to those who on the outside might look perfectly healthy, but suffer in silence because of the toll simple physical activity takes on our feet.

The Path to Commercial Availability

The research is currently supported by seed funding from Debra and EB Research in Austria. As the team moves forward, a critical hurdle remains: classification. If the insole is officially categorized as a medical device, it will become significantly more accessible to the EBS community through standard healthcare pathways. While it is not a cure, the device offers a tangible reduction in the daily barriers that currently restrict the movement of those with the condition.

By focusing on the environmental factors of heat and friction, the Maynooth project provides a targeted intervention for a condition that has long lacked specialized, preventative hardware. As development continues toward commercial availability, the project remains a primary example of how design innovation can address the specific, often invisible, challenges of chronic skin conditions.