Portable Screenless Vital-Sign Monitor

Create a complete editable parametric 3D CAD model of a **Portable Screenless Patient Vital-Sign Monitor**, suitable for FreeCAD/STEP export. ### Device Compact wrist wearable: * Enclosure: **36 × 30 × 10 mm** * Corner radius: **3 mm** * Wall thickness: **1.3 mm** * Strap: **20 mm** * Screenless — NO display. ### Functions ONLY * Heart Rate * SpO₂ * Skin/Body Temperature * Emergency SOS button **ABSOLUTELY NO blood-pressure hardware or pneumatic components.** ### Components Create separate editable objects for: * Top shell * Bottom shell * Silicone gasket, 0.5 mm * PCB: 28 × 24 × 0.8 mm * ESP32-C3-MINI-1 * MAX30102 * MAX30205 * MAX17048 * MCP73831 * LIS2DW12 * 500mAh Li-Po battery: ~30 × 25 × 4 mm * JST-PH connector * USB-C connector * Waterproof SOS button + silicone boot * M1.6 screws and mounting bosses * 20 mm removable silicone strap ### Sensor Side On the skin-contact underside: * MAX30102 facing the skin. * Optical window: **7.6 mm diameter**, aligned with MAX30102. * MAX30205 adjacent to it with a clear thermal path to the skin. ### Mechanical Design Include: * Separate top/bottom shells * Internal PCB mounting bosses * Screw holes * USB-C enclosure cutout * External SOS button * Removable strap lugs/pins * Realistic PCB/battery clearances * ~0.25 mm mechanical clearance * No impossible intersections ### Assembly Create two configurations: **ASSEMBLED:** complete wearable ready for use. **EXPLODED:** separate vertically: Top Shell → Screws → Gasket → PCB/Electronics → Battery → Bottom Shell → Sensor Window Also separate the USB-C, SOS button, screws, and strap for visibility. ### Organization Use this hierarchy: Portable_Vital_Monitor ├── Enclosure ├── Electronics ├── Power ├── Controls ├── Charging ├── Mechanical └── Assembly Use distinct colors for enclosure, PCB, battery, sensors, USB-C, SOS button, gasket, screws, and strap. Make all major components independently selectable/hideable and keep the model parametric/editable. This is an engineering prototype only and is **not clinically validated or medically certified**.

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