Vein Visualization Device
A hands-free device that reliably produces a virtual image of a patient’s veins to aid healthcare workers performing needle insertion
Video Demonstration [Theoretical]
Partners: Stanford Precourt Institute for Energy, Congreve Research Lab, Stanford Mechanical Engineering Department
Role: Project Manager & Mechanical Engineer
Main Contributions: Telescope Design*, Experimental Method Testing, Simulation, and User Research
Telescope Design Features:
Modular Chambers Threaded Together
Houses several delicate optical components with compliant o-rings
No protruding geometries for Eye Safety
Assembly does not require additional tools
The Behind Story
Challenge: Gasket Design
Solution: Research, Design Iteration, Testing
From early product dimensions and light simulation testing, we pursued one of my designs for a modular threaded chamber, which would house the device's optical components. After a design review before a panel of esteemed engineers, we received feedback on the fixturing of the delicate lens. Without the use of compliant material, our delicate and curved glass pieces could fracture from nonuniform distributed forces when fully assembled. To counter the issue, we redesigned the interface to a contact point and added space for a complaint o-ring. The compression of the o-ring not only fixes the lens in place, but also serves to absorb external or additional forces that would otherwise be loaded onto the optical components.
