🚧 This project is currently in development. Stay tuned for updates!
The Vein Scanner with a mini projector is a medical device designed to visualize the pattern of blood vessels under the skin in real time. Its main purpose is to assist in medical procedures that require precise vein access, such as drawing blood, administering intravenous medications, or inserting cannulas—especially in cases where veins are difficult to locate.
The device utilizes infrared (IR) technology to detect the vein pattern beneath the skin. This is achieved by exploiting the difference in IR light absorption between hemoglobin in the blood vessels and the surrounding tissue. An IR camera captures an image of the skin, and advanced algorithms process the data to highlight the vein network.
Once the veins are identified, the processed image is sent to a built-in mini projector. The projector displays the vein pattern directly onto the patient’s skin at the puncture site, allowing medical personnel to see the exact vein location in real time.
- Patients with difficult vein access: children, obese individuals, dehydrated patients, the elderly, and chronically ill individuals.
- Medical procedures: blood draws, IV insertion, and intravenous infusions.
- Education and training: a teaching tool for medical and nursing students to understand vein anatomy and practice injection techniques.
See the components table below for a list of hardware used in the project.
| Item | Link |
|---|---|
| See3CAM_CU512M - 5MP AR0522 Monochrome NIR USB camera | Link |
| Projector DLPDLCR2000EVM | Link |
| Raspberry Pi 5 8GB | Link |
| MicroSD Card 32GB | Link |
| E-paper Shield 2.13'' 250x122px Waveshare 12915 | Link |
| BMS Charging & Protection Module for Li-ion 1S | Link |
| Rosa3D PLA Filament | Link |
| Raspberry Pi Active Cooler | Link |
| IR Power LED Star 1W | Link |
| Wide-angle IR Illuminator (850nm, 3W) | Link |
| IR Diodes | Link |
| 18650 Li-ion Battery Samsung INR18650-26J 2600mAh | Link |
| BMS | Link |