PRJ // 0052022MEDICAL
Precision Needle Assembly (Bioprinting)
Coaxial and triaxial bioprinting needle assemblies with micron-level concentricity at ~70% lower cost.
Timeline3 months · 2022
RoleMech. design + manufacturing process
SkillsGD&T · Tolerance stacks · Precision assembly
Outcome~70% cost cut · Micron alignment validated
Overview
Designed and developed high-precision coaxial and triaxial needle assemblies for bioprinting. Achieved micron-level concentricity while cutting per-unit cost by ~70%, enabling scalable experimentation and integration into an operational bioprinter.
The Problem
Commercial multi-lumen bioprinting needles are expensive and difficult to customize. Maintaining micron-level alignment is challenging and often requires costly machining.
My Approach
Created precision needle assemblies using custom interfaces plus purchased precision components to achieve tight concentricity without bespoke machining for every part. Designed alignment features for micron-level concentricity and defined controlled assembly workflows with alternating precision components.
Key Results
Fully integrated into the bioprinting system. Validated through operational printing, not bench-only tests. Demonstrated stable alignment and repeatable performance. Reduced per-assembly cost by about 70% while maintaining micron-level alignment.
Gallery
