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Product Development Projects

My detailed design portfolio is available upon request.

Please reach out to me at bchangphd at gmail dot com

Surgical Robots

Worked on three surgical robotics projects spanning the product development lifecycle, including concept development, alpha prototyping, and design verification testing. Contributions included defining system requirements using JAMA, conducting IEC 60601 regulatory analysis, performing tip-over safety analysis, and executing trade-off studies for system architecture and human factors. Supported supplier management by consolidating Bills of Materials (BoMs) for over 20 prototypes, ensured quality through parts inspection, and designed fixtures for verifying end-effector positional accuracy and workspace geometry.

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surgical robot

Optomechanical Fluidic System for Drug Characterization

Developed a fluidic system for in-vitro drug characterization, contributing to optics and fluidics design, and calibration procedures. Responsibilities included defining system and subsystem requirements, designing and testing the optics system for detecting fluorescent chemicals, and creating the fluidic subsystem with pumps, sensors, and waste management. Calibrated the system for fluorescent dye concentration measurements and developed automated bubble management routines. Advised software engineers of on computer vision algorithms for flow tracking and implementing automation subroutines.

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Image by James Jeremy Beckers

Bluetooth Connected Insulin Pen

Developed a Bluetooth-connected insulin pen, focusing on dose detection and inter-device communication, and contributed across stages from early prototyping to design verification testing (DVT). Key responsibilities included concept development to prevent dose miscounts using SolidWorks, optics simulations for IR communication and light pipe design, and FEA simulations for PCBA stress-strain mapping. Additionally, created test plans, validated software, and implemented data integrity procedures to ensure compliance with Good Documentation Practices (GDP).

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Drug and Syringe

Dose Detection and Drug Detection Feasibility

Conducted early-stage feasibility studies for new technologies aimed at improving dose and drug detection in insulin pens. Contributions included leading ideation workshops, creating SolidWorks prototypes, and developing test fixtures for feasibility assessments. Designed mechanisms with a focus on Design for Manufacturability (DfM), performed PCBA and component tolerance analyses, and created dose-counting algorithms using MATLAB. Additionally, conducted trade studies to evaluate cost, manufacturability, reliability, and energy efficiency while minimizing design changes and component costs.

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© 2024 by Brian Chang

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