What it does
We’re developing a customizable, sustainable upper limb brace using 3D scanning and modular parts for comfort and fucntions. Anchor boosts security, while eco-friendly TPU materials and tool attachments improve daily use, adaptability, and sustainability.
Your inspiration
My inspiration came after fracturing my hand in a fall during a cross-country run. Struggling with daily tasks and the limits of current prosthetic systems made the problem personal. I focused on restoring confidence and independence, constantly refining my design through sketches, prototypes, and user feedback. It led to modular attachments, adjustable straps, and an intuitive interface, always asking if the device would make life easier and be comfortable for long wear. User experience remained central throughout each stage of development.
How it works
Our prosthetic mounting system is designed to help people with hand or arm differences use their upper limb more easily and comfortably. We start by using a 3D scanner to create a precise digital model of each user’s arm, allowing us to make a brace that fits perfectly. The design is modular, with three main parts: a finger assembly, a wrist support, and connectors, making it easy to adjust and repair. For secure and comfortable wear, we use a hook-shaped anchor that rests on the collarbone, spreading force evenly and preventing discomfort. The brace is made from a flexible, recyclable plastic, which is both durable and environmentally friendly. Users can attach different tools depending on their needs, and these attachments are simple to change. An intuitive interface allows for easy adjustments and remote customization, so users and therapists can fine-tune the fit without extra appointments. This design puts comfort, adaptability, and sustainability first.
Design process
The design process began with user interviews and observations to understand the frustrations and needs of people using traditional upper limb prosthetic mounting systems. Early sketches focused on comfort, lightweight structure, and adjustability. Our first prototype was a simple brace made from molded plastic and basic straps, but it was bulky and didn’t fit users well. We then moved to digital modeling using Rhino and introduced 3D scanning to capture the unique shape of each user’s arm. This allowed for a much more precise and comfortable fit. The second prototype featured a modular three-part structure: finger assembly, wrist support, and connectors. This version was lighter and easier to adjust, but during testing, users reported some discomfort around the attachment point. In response, we developed a hook-shaped anchor designed to rest on the clavicle and distribute force evenly, significantly improving comfort and stability. Tool attachments were added that allow users to adapt the brace. Feedback from occupational therapists and users led to further refinements, like softer padding, adjustable straps, and an intuitive interface for remote customization. Today’s design is comfortable, adaptable, and eco-friendly, with every improvement driven by real user feedback.
How it is different
Our design stands out from traditional upper limb prosthetic mounting systems in several important ways. First, we use 3D scanning and digital modeling to create custom fit for each user. Unlike many existing products, our modular three-part structure lets users easily swap, repair, or adjust components as needed for daily activities or growth. Another unique feature is our hook-shaped anchor, which distributes pressure evenly across the clavicle, greatly improving comfort and security compared to standard straps or harnesses that can cause irritation or slippage. We also prioritize sustainability by using flexible, recyclable TPU materials. Finally, our system offers modular tool attachments and an intuitive interface for remote adjustments are features rarely found together in other designs. The result is a user-centered, eco-friendly solution that adapts to real-life needs and promotes independence.
Future plans
Our next steps focus on refining the customizable upper limb brace through user testing, clinical trials, and digital integration for remote adjustments. We aim to partner with healthcare providers and prosthetics manufacturers for pilot programs, secure patents, and expand production using sustainable materials. Our goal is to empower users with comfortable, adaptable, and eco-friendly solutions, improving daily function and confidence. By advancing both technology and accessibility, we hope to set a new standard in upper limb prosthetic mounting.
Awards
IMechE, Best Student Design Award 2025 CUHK Wu Yee Sun College Innovation and Creativity Scholarship 2025 Honourable Mention @CUHK Capstone Project Presentation Competition 2025 China International College Student Innovation Competition-Hong Kong 2025 IET, Young Professionals Exhibition & Competition 2025
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