Reem Hamad

University of Nottingham > Engineering > Departments > Mechanical, Materials and Manufacturing Engineering > PDM Exhibitions > 2025 > BEng students > Reem Hamad

For my major project, I designed a portable isothermal carrier specifically for insulin injector pens, addressing the challenges faced by individuals managing diabetes in unpredictable environments.

Hi, I’m Reem. I’ve just completed my degree in Product Design and Manufacture at the University of Nottingham, and I’m excited to embark on my next journey. I chose this field because I’m fascinated by the intersection of engineering and creativity, where thoughtful design has the power to make everyday experiences better.

During my time at university, I served as Vice President of the University of Nottingham Women’s Engineering Society for a year and was an active member for two. This experience deepened my passion for promoting inclusivity in engineering. I also took part in mentorship programmes and worked as a student ambassador, where I enjoyed supporting fellow students and helping build a stronger academic community.

Outside of academics, I enjoy long walks in nature and exploring diverse cuisines. I also like visiting exhibitions and pop-up events, which often spark new ideas and influence how I approach design challenges.

Reem Hamad, BEng Product Design and Manufacture

Isothermal Carrier

For my major project, I designed a portable isothermal carrier specifically for insulin injector pens, addressing the challenges faced by individuals managing diabetes in unpredictable environments. The project began with extensive research to identify the market landscape, user needs, and technical requirements.

Insulin is a temperature-sensitive medication that must be kept between 2–6°C to remain effective. During travel or outdoor activities, maintaining this temperature range becomes increasingly difficult—particularly in hot climates or in situations where refrigeration is unavailable for extended periods. I chose to target adult users who undertake long-haul travel or live in high-temperature environments without consistent refrigeration access.

The resulting product is a compact, standalone cooling solution powered by thermoelectric (Peltier) technology and dual lithium-ion batteries. It accommodates up to five standard insulin pens, providing approximately one month's supply. The device achieves thermal control through direct contact between the Peltier modules and an extruded aluminium cooling chamber. High-performance aerogel and PU foam insulation further support thermal retention and energy efficiency.

A spring-loaded follower plate elevates pens to the access point for smooth, sequential dispensing. These are retrieved through a top-mounted access door equipped with an internal food-grade silicone seal and locking trigger, ensuring both insulation and security in transit.

The interface has been deliberately kept simple, with a single-button control and a screen displaying battery status and temperature. No user configuration is needed. Internally, the electronics are housed in a separate, ventilated chamber to isolate heat generation and streamline assembly.

This design was developed with attention to ergonomics, modularity, and future adaptability. From technical feasibility to user-centered design, the project delivers a manufacturable, practical solution that enhances confidence, convenience, and independence for insulin users.