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Biomeon

Biomeon is a reusable biosensor for monitoring recovering ex-colorectal cancer patients at home instead of the hospital, reducing hospital work pressure and improving patient experience.

  • Biomeon helps recovering ex-colorectal cancer patients to be monitored from home.

  • Final prototype used in the user test. We test the look and feel and the improvement of adhesives.

  • Exploded view that highlights the most important components used in the biosensor.

  • Initial shape iterations from the beginning phase of the project.

  • Overview of all the prototypes that were made. Project process from beginning to end.

Wat het doet

The biosensor tracks the patient's vitals (Oxygen/ECG/temperature/heartbeat) and activity levels to monitor recovery. Patients can use a button for extra readings if unwell. Connected to a medical portal, doctors track recovery and get alerts if issues arise.

Je inspriatie

We received the design brief from the Promise Project of TU Delft and Erasmus MC, aimed at improving post-hospital recovery for colorectal cancer patients. Their current biosensor had many issues, particularly with adhesion and leaving burn marks when removed. Female users faced challenges due to anatomical differences. The single-use design also has a high environmental impact. We aimed to improve user experience, focusing on recovering colorectal cancer patients. Our goal was to create a more effective, sustainable, and discreet product, enhancing comfort and usability for all users.

Hoe het werkt

Patients are monitored 12 times for 5 days every 2-3 months. They apply the biosensor to their chest and connect it to the app. The biosensor collects data through different sensors (Oxygen %, ECG, Pulse, Temperature, and position) that are connected to an ESP32 and sends it to the app and doctor's portal through a relay device or app on the patient’s phone. Doctors review the data after each period. The app shows the next appointment, blood work results, and vital data summary. If values are abnormal, the doctor gets notified to contact the patient. Patients can press a button for an extra reading if they feel unwell. If there are any loose patches, these can be replaced. After 5 days, the biosensor is removed and placed on a wireless charger. The process repeats as scheduled.

Ontwerpproces

We developed this concept in the Advanced Concept Design course of our Master Integrated Product Design at TU Delft. Initially, we studied the disease, conducted hospital field research, interviewed experts, understood the doctor’s and patient’s journey, analyzed current solutions, and defined our concept after team ideation. Next, we focused on realizing the design. This included system mapping, shape definition, and developing electronics and casing. We explored manufacturing options, created CAD models, and made prototypes through rapid prototyping. We conducted studies through 3D printing, resin molding, and tested materials for fit and water tightness. Using an iterative approach, we improved the product step by step. We wrote the code, made a PCB, soldered the board, and selected materials for our sensor. We performed injection molding analysis, user tests, and assessed water tightness, button placement, and battery requirements. We tested physical and cognitive ergonomics and conducted a life cycle assessment (LCA). We improved the repairability of the product. Focusing on user experience led to better product adhesiveness. Sustainability improvements reduced emissions significantly. We integrated BLE, explored data encryption, and how to connect the device wirelessly.

Hoe onderscheidend is het?

Biomeon offers a more fitting and sustainable solution for patients needing home monitoring. Unlike the single-use sensors used currently, Biomeon prioritizes user comfort, effectiveness, and lowers its environmental impact. Our design is more aesthetic and less obtrusive, improving ease of use without negative experiences during placement, usage, or removal. A key improvement is making the biosensor reusable. It features wireless charging and replaceable pads, significantly extending its lifespan. This approach reduces waste, is cost-effective, and user-friendly.

Toekomstplannen

We will further develop the biosensor next academic year, reducing its size and fixing bugs in the electronics PCB and software. The device has some "empty room" we can eliminate, making it even less obtrusive. TU Delft is interested in having graduating students continue improving it, focusing on manufacturing optimization and durability tests. If successful, initial sensors might be manufactured by TU Delft for patient testing. Regulation compliance will take several years. Researchers from various TU Delft faculties will contribute, ensuring it meets design, user experience, and programming standards for medical use.

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